  May 18, 2020

      Title 46
      Shipping
      Parts 140 to 155
      Revised as of October 1, 2020
      Containing a codification of documents of general applicability and future effect
      As of October 1, 2020

        Published by the Office of the Federal Register National Archives and Records Administration as a Special Edition of the Federal Register

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      Table of Contents
      Page

        Explanation
        v

        Title 46:

          Chapter I—Coast Guard, Department of Homeland Security (Continued)
          3

        Finding Aids:
        Table of CFR Titles and Chapters
        353
        Alphabetical List of Agencies Appearing in the CFR
        373
        List of CFR Sections Affected
        383

      Cite this Code: CFR

      To cite the regulations in this volume use title, part and section number. Thus, 46 CFR 140.100 refers to title 46, part 140, section 100.

      Explanation
      The Code of Federal Regulations is a codification of the general and permanent rules published in the Federal Register by the Executive departments and agencies of the Federal Government. The Code is divided into 50 titles which represent broad areas subject to Federal regulation. Each title is divided into chapters which usually bear the name of the issuing agency. Each chapter is further subdivided into parts covering specific regulatory areas.
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        Title 1 through Title 16
        as of January 1
        Title 17 through Title 27
        as of April 1
        Title 28 through Title 41
        as of July 1
        Title 42 through Title 50
        as of October 1

      The appropriate revision date is printed on the cover of each volume.

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        The e-CFR is a regularly updated, unofficial editorial compilation of CFR material and Federal Register amendments, produced by the Office of the Federal Register and the Government Publishing Office. It is available at www.ecfr.gov.

          Oliver A. Potts,

          Director,

          Office of the Federal Register

          October 1, 2020

      THIS TITLE
      Title 46—Shipping is composed of nine volumes. The parts in these volumes are arranged in the following order: Parts 1-40, 41-69, 70-89, 90-139, 140-155, 156-165, 166-199, 200-499, and 500 to end. The first seven volumes containing parts 1-199 comprise chapter I—Coast Guard, DHS. The eighth volume, containing parts 200—499, includes chapter II—Maritime Administration, DOT and chapter III—Coast Guard (Great Lakes Pilotage), DHS. The ninth volume, containing part 500 to end, includes chapter IV—Federal Maritime Commission. The contents of these volumes represent all current regulations codified under this title of the CFR as of October 1, 2020.
      For this volume, Stephen J. Frattini was Chief Editor. The Code of Federal Regulations publication program is under the direction of John Hyrum Martinez.

    46 CFR Ch. I (10-1-20 Edition)
    Coast Guard, DHS

        Title 46—Shipping
        (This book contains parts 140 to 155)

        Part

            chapter i—Coast Guard, Department of Homeland Security (Continued)
          140

          CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)

          SUBCHAPTER M—TOWING VESSELS

        Part
        Page

          140
          Operations
          5
          141
          Lifesaving
          17
          142
          Fire protection
          23
          143
          Machinery and electrical systems and equipment
          30
          144
          Construction and arrangement
          43

          SUBCHAPTER N—DANGEROUS CARGOES

          145-146
          [Reserved]
          147
          Hazardous ships' stores
          51
          147A
          Interim regulations for shipboard fumigation
          58
          148
          Carriage of bulk solid materials that require special handling
          62
          149
          [Reserved]

          SUBCHAPTER O—CERTAIN BULK DANGEROUS CARGOES

          150
          Compatibility of cargoes
          92
          151
          Barges carrying bulk liquid hazardous material cargoes
          147
          152
          [Reserved]
          153
          Ships carrying bulk liquid, liquefied gas, or compressed gas hazardous materials
          214
          154
          Safety standards for self-propelled vessels carrying bulk liquefied gases
          288
          155
          [Reserved]

          SUBCHAPTER P—MANNING OF VESSELS [RESERVED]

        SUBCHAPTER M—TOWING VESSELS

          Pt. 140
          PART 140—OPERATIONS

              Subpart A—General
              Sec.
              140.100
              Purpose.
              140.105
              Applicability and delayed implementation for existing vessels.

              Subpart B—General Operational Safety
              140.205
              General vessel operation.
              140.210
              Responsibilities of the master and crew.

              Subpart C [Reserved]

              Subpart D—Crew Safety
              140.400
              Personnel records.
              140.405
              Emergency duties and duty stations.
              140.410
              Safety orientation.
              140.415
              Orientation for individuals that are not crewmembers.
              140.420
              Emergency drills and instruction.
              140.425
              Fall overboard prevention.
              140.430
              Wearing of work vests.
              140.435
              First aid equipment.

              Subpart E—Safety and Health
              140.500
              General.
              140.505
              General health and safety requirements.
              140.510
              Identification and mitigation of health and safety hazards.
              140.515
              Training requirements.

              Subpart F—Vessel Operational Safety
              140.600
              Applicability.
              140.605
              Vessel stability.
              140.610
              Hatches and other openings.
              140.615
              Examinations and tests.
              140.620
              Navigational safety equipment.
              140.625
              Navigation underway.
              140.630
              Lookout.
              140.635
              Navigation assessment.
              140.640
              Pilothouse resource management.
              140.645
              Navigation safety training.
              140.650
              Operational readiness of lifesaving and fire suppression and detection equipment.
              140.655
              Prevention of oil and garbage pollution.
              140.660
              Vessel security.
              140.665
              Inspection and testing required when making alterations, repairs, or other such operations involving riveting, welding, burning, or like fire-producing actions.
              140.670
              Use of auto pilot.

              Subpart G—Navigation and Communication Equipment
              140.700
              Applicability.
              140.705
              Charts and nautical publications.
              140.710
              Marine radar.
              140.715
              Communications equipment.
              140.720
              Navigation lights, shapes, and sound signals.
              140.725
              Additional navigation equipment.

              Subpart H—Towing Safety
              140.800
              Applicability.
              140.801
              Towing gear.
              140.805
              Towing safety.
              140.820
              Recordkeeping for towing gear.

              Subpart I—Vessel Records
              140.900
              Marine casualty reporting.
              140.905
              Official logbooks.
              140.910
              Towing vessel record or record specified by TSMS.
              140.915
              Items to be recorded.

              Subpart J—Penalties
              140.1000
              Statutory penalties.
              140.1005
              Suspension and revocation.

            Authority:
            46 U.S.C. 3103, 3301, 3306, 3308, 3316, 8104, 8904; 33 CFR 1.05; DHS Delegation 0170.1.

            Source:
            USCG-2006-24412, 81 FR 40101, June 20, 2016, unless otherwise noted.

            Subpart A—General

              § 140.100
              Purpose.
              This part contains the health, safety, and operational requirements for towing vessels and the crewmembers serving onboard them.

              § 140.105
              Applicability and delayed implementation for existing vessels.
              This part applies to all towing vessels subject to this subchapter.
              (a) With the exception § 140.500, which has a later implementation date, an existing towing vessel must comply with the requirements in this part no later than either July 20, 2018 or the date the vessel obtains a Certificate of Inspection (COI), whichever date is earlier.
              (b) The delayed implementation provisions in paragraph (a) of this section do not apply to a new towing vessel.

            Subpart B—General Operational Safety

              § 140.205
              General vessel operation.
              (a) A vessel must be operated in accordance with applicable laws and regulations and in such a manner as to afford protection against hazards to life, property, and the environment.
              (b) Towing vessels with a Towing Safety Management System (TSMS) must be operated in accordance with the TSMS applicable to the vessel.
              (c) Vessels must be manned in accordance with the COI. Manning requirements are contained in part 15 of this chapter.
              (d) Each crewmember that is required to hold a Merchant Mariner Credential (MMC) must have the credential on board and available for examination at all times when the vessel is operating.
              (e) All individuals who are not required to hold an MMC permitted onboard the vessel must have and present on request a valid personal identification that meets the requirements set forth in 33 CFR 101.515.

              § 140.210
              Responsibilities of the master and crew.
              (a) The safety of the towing vessel is the responsibility of the master and includes:
              (1) Adherence to the provisions of the COI;
              (2) Compliance with the applicable provisions of this subchapter;
              (3) Compliance with the TSMS, if one is applicable to the vessel; and
              (4) Supervision of all persons onboard in carrying out their assigned duties.
              (b) If the master or officer in charge of a navigational watch believes it is unsafe for the vessel to proceed, that an operation endangers the vessel or crew, or that an unsafe condition exists, he or she must ensure that adequate corrective action is taken and must not proceed until it is safe to do so.
              (c) Nothing in this subpart may be construed in a manner which limits the master or officer in charge of a navigational watch, at his or her own responsibility, from diverting from the route prescribed in the COI or taking such steps as deemed necessary and prudent to assist vessels in distress or for other emergency conditions.
              (d) It is the responsibility of the crew to:
              (1) Adhere to the provisions of the COI;
              (2) Comply with the applicable provisions of this subchapter;
              (3) Comply with the TSMS, if one is applicable to the vessel;
              (4) Ensure that the master or officer in charge of a navigational watch is made aware of all known aspects of the condition of the vessel, including:
              (i) Those vessels being pushed, pulled, or hauled alongside; and
              (ii) Equipment and other accessories used for pushing, pulling, or hauling alongside other vessels.
              (5) Minimize any distraction from the operation of the vessel or performance of duty; and
              (6) Report unsafe conditions to the master or officer in charge of a navigational watch and take effective action to prevent accidents.

            Subpart C [Reserved]

            Subpart D—Crew Safety

              § 140.400
              Personnel records.
              (a) The master of each towing vessel must keep an accurate list of crewmembers and their assigned positions and responsibilities aboard the vessel.
              (b) The master must keep an accurate list of individuals to be carried as persons in addition to the crew and any passengers.
              (c) The date and time that a navigation watchstander, including master, officer in charge of a navigational watch, and lookout assumes a watch and is relieved of a watch must be recorded in the towing vessel record (TVR), official logbook, or in accordance with the TSMS applicable to the vessel. If an engineering watch is maintained, comparable records documenting the engineering watch are required.

              § 140.405
              Emergency duties and duty stations.

              (a) Crewmembers must meet the requirements in §§ 15.405 and 15.1105 of this chapter, as appropriate.

              (b) Any towing vessel with alternating watches (shift work) or overnight accommodations must identify the duties and duty stations of each person onboard during an emergency, including:
              (1) Responding to fires and flooding;
              (2) Responding to emergencies that necessitate abandoning the vessel;
              (3) Launching survival craft;
              (4) Taking action during heavy weather;
              (5) Taking action in the event of a person overboard;
              (6) Taking action relative to the tow;
              (7) Taking action in the event of failure of propulsion, steering, or control system;
              (8) Managing individuals onboard who are not crewmembers;
              (9) Managing any other event or condition which poses a threat to life, property, or the environment; and
              (10) Responding to other special duties essential to addressing emergencies as determined by the TSMS applicable to the vessel, if a TSMS is used.
              (c) The emergency duties and duty stations required by this section must be posted at each operating station and in a conspicuous location in a space commonly visited by crewmembers. If posting is impractical, such as in an open boat, they may be kept onboard in a location readily available to the crew.

              § 140.410
              Safety orientation.
              (a) Personnel must meet the requirements in §§ 15.405 and 15.1105 of this chapter, as appropriate.
              (b) Prior to getting underway for the first time on a particular towing vessel, each crewmember must receive a safety orientation on:
              (1) His or her duties in an emergency;
              (2) The location, operation, and use of lifesaving equipment;
              (3) Prevention of falls overboard;
              (4) Personal safety measures;
              (5) The location, operation, and use of Personal Protective Equipment;
              (6) Emergency egress procedures;
              (7) The use and operation of watertight and weathertight closures;
              (8) Responsibilities to provide assistance to individuals that are not crewmembers;
              (9) How to respond to emergencies relative to the tow; and
              (10) Awareness of, and expected response to, any other hazards inherent to the operation of the towing vessel which may pose a threat to life, property, or the environment.
              (c) The safety orientation provided to crewmembers who received a safety orientation on another vessel may be modified to cover only those areas unique to the other vessel on which service will occur.
              (d) Safety orientations and other crew training must be documented in the TVR, official logbook, or in accordance with the TSMS applicable to the vessel. The entry must include:
              (1) The date of the safety orientation or training;
              (2) A general description of the safety orientation or training topics;
              (3) The name(s) and signature(s) of individual(s) providing the orientation or training; and
              (4) The name(s) of the individual(s) receiving the safety orientation or training.

              § 140.415
              Orientation for individuals that are not crewmembers.
              Individuals, who are not crewmembers, on board a towing vessel must receive a safety orientation prior to getting underway or as soon as practicable thereafter, to include:
              (a) The location, operation, and use of lifesaving equipment;
              (b) Emergency procedures;
              (c) Methods to notify crewmembers in the event of an emergency; and
              (d) Prevention of falls overboard.

              § 140.420
              Emergency drills and instruction.
              (a) Master's responsibilities. The master of a towing vessel must ensure that drills are conducted and instructions are given to ensure that all crewmembers are capable of performing the duties expected of them during emergencies. This includes abandoning the vessel, recovering persons from the water, responding to onboard fires and flooding, or responding to other threats to life, property, or the environment.
              (b) Nature of drills. Each drill must, as far as practicable, be conducted as if there was an actual emergency.

              (c) Annual instruction for each crew member. Unless otherwise stated, each crewmember must receive the instruction required by this section annually.
              (d) Instructions and drills required. The following instruction and drills are required:
              (1) Response to fires, as required by § 142.245 of this subchapter;
              (2) Launching of a skiff, if listed as an item of emergency equipment to abandon ship or recover a person-overboard;
              (3) Instruction on the use of davit-launched liferafts, if installed.
              (4) If a rescue boat is installed, instruction on how it must be launched, with its assigned crew aboard, and maneuvered in the water as if during an actual man-overboard situation.
              (5) Credentialed mariners holding an officer endorsement do not require instruction in accordance with paragraphs (d)(1), (3), and (4) of this section.
              (e) Alternative forms of instruction. (1) Instruction as required by this section may be conducted via an electronic format followed by a discussion and demonstration by a competent individual. This instruction may occur either on board or off the vessel but must include the equipment that is the subject of the instruction.
              (2) Instruction as required by this section may be performed in accordance with the TSMS applicable to the vessel, provided that it meets the minimum requirements of this section.
              (f) Location of drills, full crew participation, and use of equipment. As far as practicable, drills must take place on board the vessel. They must include:
              (1) Participation by all crewmembers; and
              (2) Actual use of, or realistic simulation of the use of, emergency equipment.
              (g) Recordkeeping. Records of drills and instruction must be maintained in the TVR, official logbook, or in accordance with the TSMS applicable to the vessel. The record must include:
              (1) The date of the drill and instruction;
              (2) A description of the drill scenario and instruction topics;
              (3) The personnel involved.

              § 140.425
              Fall overboard prevention.
              (a) The owner or managing operator of a towing vessel must establish procedures to address fall overboard prevention and recovery of persons in the water, including, but not limited to:
              (1) Personal protective equipment;
              (2) Safely working on the tow;
              (3) Safety while line handling;
              (4) Safely moving between the vessel and a tow, pier, structure, or other vessel; and
              (5) Use of retrieval equipment.
              (b) The owner, managing operator, or master must ensure that all persons on board comply with the policies and procedures in this section.

              § 140.430
              Wearing of work vests.
              (a) Personnel dispatched from the vessel or that are working in an area on the exterior of the vessel without rails and guards must wear a lifejacket meeting requirements in 46 CFR 141.340, an immersion suit meeting requirements in 46 CFR 141.350, or a work vest approved by the Commandant under 46 CFR subpart 160.053. When worn at night, the work vest must be equipped with a light that meets the requirements of 46 CFR 141.340(g)(1). Work vests may not be substituted for the lifejackets required by 46 CFR part 141.
              (b) Each storage container containing a work vest must be marked “WORK VEST”.

              § 140.435
              First aid equipment.
              Each towing vessel must be equipped with an industrial type first aid cabinet or kit, appropriate to the size of the crew and operating conditions. Each towing vessel operating on oceans, coastwise, or Great Lakes routes must have a means to take blood pressure readings, splint broken bones, and apply large bandages for serious wounds.

            Subpart E—Safety and Health

              § 140.500
              General.

              (a) No later than July 22, 2019, the owner or managing operator must implement a health and safety plan. The health and safety plan must document compliance with this part and include recordkeeping procedures.
              (b) The owner, managing operator, or master must ensure that all persons on board a towing vessel comply with the health and safety plan.

              § 140.505
              General health and safety requirements.
              (a) The owner or managing operator must implement procedures for reporting unsafe conditions and must have records of the activities conducted under this section. The owner or managing operator must maintain records of health and safety incidents that occur on board the vessel, including any medical records associated with the incidents. Upon request, the owner or managing operator must provide crewmembers with incident reports and the crewmember's own associated medical records.
              (b) All vessel equipment must be used in accordance with the manufacturer's recommended practice and in a manner that minimizes risk of injury or death. This includes machinery, deck machinery, towing gear, ladders, embarkation devices, cranes, portable tools, and safety equipment.
              (c) All machinery and equipment that is not in proper working order (including missing or malfunctioning guards or safety devices) must be removed; made safe through marking, tagging, or covering; or otherwise made unusable.
              (d) Personal Protective Equipment (PPE). (1) Appropriate Personal Protective Equipment (PPE) must be made available and on hand for all personnel engaged in an activity that requires the use of PPE.
              (2) PPE must be suitable for the vessel's intended service; meet the standards of 29 CFR part 1910, subpart I; and be used, cleaned, maintained, and repaired in accordance with manufacturer's requirements.
              (3) All individuals must wear PPE appropriate to the activity being performed;
              (4) All personnel engaged in an activity must be trained in the proper use, limitations, and care of the PPE specified by this subpart;
              (e) The vessel, including crew's quarters and the galley, must be kept in a sanitary condition.

              § 140.510
              Identification and mitigation of health and safety hazards.
              (a) The owner or managing operator must implement procedures to identify and mitigate health and safety hazards, including but not limited to:
              (1) Tools and equipment, including deck machinery, rigging, welding and cutting, hand tools, ladders, and abrasive wheel machinery found on board the vessel;
              (2) Slips, trips, and falls;
              (3) Working aloft;
              (4) Hazardous materials;
              (5) Confined space entry;
              (6) Blood-borne pathogens and other biological hazards;
              (7) Electrical;
              (8) Noise;
              (9) Falls overboard;
              (10) Vessel embarkation and disembarkation (including pilot transfers);
              (11) Towing gear, including winches, capstans, wires, hawsers and other related equipment;
              (12) Personal hygiene;
              (13) Sanitation and safe food handling; and
              (14) Potable water supply.
              (b) As far as practicable, the owner or managing operator must implement other types of safety control measures before relying on Personal Protective Equipment. These controls may include administrative, engineering, source modification, substitution, process change or controls, isolation, ventilation, or other controls.

              § 140.515
              Training requirements.
              (a) All crewmembers must be provided with health and safety information and training that includes:
              (1) Content and procedures of the owner or managing operator's health and safety plan;
              (2) Procedures for reporting unsafe conditions;
              (3) Proper selection and use of PPE appropriate to the vessel operation;

              (4) Safe use of equipment including deck machinery, rigging, welding and cutting, hand tools, ladders, and abrasive wheel machinery found onboard the vessel;

              (5) Hazard communication and cargo knowledge;
              (6) Safe use and storage of hazardous materials and chemicals;
              (7) Confined space entry;
              (8) Respiratory protection; and
              (9) Lockout/Tagout procedures.
              (b) Individuals, other than crewmembers, must be provided with sufficient information or training on hazards relevant to their potential exposure on or around the vessel.
              (c) Crewmember training required by this section must be conducted as soon as practicable, but not later than 5 days after employment.
              (d) Refresher training must be repeated annually and may be conducted over time in modules covering specific topics. Refresher training may be less comprehensive, provided that the information presented is sufficient to provide employees with continued understanding of workplace hazards. The refresher training of persons subject to this subpart must include the information and training prescribed in this section.
              (e) The owner, managing operator, or master must determine the appropriate training and information to provide to each individual permitted on the vessel who is not a crewmember, relative to the expected risk exposure of the individual.
              (f) All training required in this section must be documented in owner or managing operator's records.

            Subpart F—Vessel Operational Safety

              § 140.600
              Applicability.
              This subpart applies to all towing vessels unless otherwise specified. Certain vessels remain subject to the navigation safety regulations in 33 CFR part 164.

              § 140.605
              Vessel stability.
              (a) Prior to getting underway, and at all other times necessary to ensure the safety of the vessel, the master or officer in charge of a navigational watch must determine whether the vessel complies with all stability requirements in the vessel's trim and stability book, stability letter, COI, and Load Line Certificate, as applicable.
              (b) A towing vessel must be maintained and operated so the watertight integrity and stability of the vessel are not compromised.

              § 140.610
              Hatches and other openings.
              (a) All towing vessels must be operated in a manner that minimizes the risk of down-flooding and progressive flooding.
              (b) The master must ensure that all hatches, doors, and other openings designed to be watertight or weather-tight function properly.
              (c) The master or officer in charge of a navigational watch must ensure all hatches and openings of the hull and deck are kept tightly closed except:
              (1) When access is needed through the opening for transit;
              (2) When operating on rivers with a tow, if the master determines the safety of the vessel is not compromised; or
              (3) When operating on lakes, bays, and sounds, without a tow during calm weather, and only if the master determines that the safety of the vessel is not compromised.
              (d) Where installed, all watertight doors in watertight bulkheads must be closed during the operation of the vessel, unless they are being used for transit between compartments; and
              (e) When downstreaming, all exterior openings at the main deck level must be closed.
              (f) Decks and bulkheads designed to be watertight or weathertight must be maintained in that condition.

              § 140.615
              Examinations and tests.
              (a) This section applies to a towing vessel not subject to 33 CFR 164.80.
              (b) Prior to getting underway, the master or officer in charge of a navigational watch of the vessel must examine and test the steering gear, signaling whistle, propulsion control, towing gear, navigation lights, navigation equipment, and communication systems of the vessel. This examination and testing does not need to be conducted more than once in any 24-hour period.
              (c) The results of the examination and testing must be recorded in the TVR, official logbook, or in accordance with the TSMS applicable to the vessel.

              § 140.620
              Navigational safety equipment.
              (a) This section applies to a towing vessel not subject to the requirements of 33 CFR 164.82.
              (b) The owner, managing operator, or master of each towing vessel must maintain the required navigational-safety equipment in a fully-functioning, operational condition.
              (c) Navigational safety equipment such as radar, gyrocompass, echo depth-sounding or other sounding device, automatic dependent surveillance equipment, or navigational lighting that fails during a voyage must be repaired at the earliest practicable time. The owner, managing operator, or master must consider the state of the equipment (along with such factors as weather, visibility, traffic, and the dictates of good seamanship) when deciding whether it is safe for the vessel to proceed.
              (d) The failure and subsequent repair or replacement of navigational safety equipment must be recorded. The record must be made in the TVR, official logbook, or in accordance with the TSMS applicable to the vessel.

              § 140.625
              Navigation underway.
              (a) At all times, the movement of a towing vessel and its tow must be under the direction and control of a master or mate (pilot) properly licensed under subchapter B of this chapter.
              (b) The master or officer in charge of a navigational watch must operate the vessel in accordance with the conditions and restrictions stated on the COI and the TSMS applicable to the vessel.
              Note to § 140.625. Certain towing vessels subject to § 140.625 are also subject to the requirements of 33 CFR 164.78.

              § 140.630
              Lookout.
              (a) Throughout the trip or voyage the master and officer in charge of the navigational watch must assess the requirement for a lookout, consistent with 33 CFR 83.05. A lookout in addition to the master or mate (pilot) should be added when necessary to:
              (1) Maintain a state of vigilance with regard to any significant change in the operational environment;
              (2) Assess the situation and the risk of collision/allision;
              (3) Anticipate stranding and other dangers to navigation; and
              (4) Detect any other potential hazards to safe navigation.
              (b) In determining the requirement for a lookout, the officer in charge of the navigational watch must take full account of relevant factors including, but not limited to: state of weather, visibility, traffic density, proximity of dangers to navigation, and the attention necessary when navigating in areas of increased vessel traffic.

              § 140.635
              Navigation assessment.
              (a) The officer in charge of a navigational watch must conduct a navigation assessment for the intended route and operations prior to getting underway. The navigation assessment must incorporate the requirements of pilothouse resource management of § 140.640, assess operational risks, and anticipate and manage workload demands. At a minimum, this assessment must consider:
              (1) The velocity and direction of currents in the area being transited;
              (2) Water depth, river stage, and tidal state along the route and at mooring location;
              (3) Prevailing visibility and weather conditions and changes anticipated along the intended route;
              (4) Density (actual and anticipated) of marine traffic;
              (5) The operational status of pilothouse instrumentation and controls, to include alarms, communication systems, variation and deviation errors of the compass, and any known nonconformities or deficiencies;
              (6) Air draft relative to bridges and overhead obstructions taking tide and river stage into consideration;
              (7) Horizontal clearance, to include bridge transits;
              (8) Lock transits;
              (9) Navigation hazards such as logs, wrecks or other obstructions in the water;

              (10) Any broadcast notice to mariners, safety or security zones or special navigation areas;

              (11) Configuration of the vessel and tow, including handling characteristics, field of vision from the pilothouse, and activities taking place onboard;
              (12) The knowledge, qualifications, and limitations of crewmembers who are assigned as members on watch and the experience and familiarity of crewmembers with the towing vessels particulars and equipment; and
              (13) Any special conditions not covered above that impact the safety of navigation.
              (b) The officer in charge of a navigational watch must keep the navigation assessment up-to-date to reflect changes in conditions and circumstances. This includes updates during the voyage or trip as necessary. At each change of the navigational watch, the oncoming officer in charge of the navigational watch must review the current navigation assessment for necessary changes.
              (c) The officer in charge of a navigational watch must ensure that the navigation assessment and any updates are communicated to other members of the navigational watch.
              (d) A navigation assessment entry must be recorded in the TVR, official log, or in accordance with the TSMS applicable to the vessel. The entry must include the date and time of the assessment, the name of the individual making the assessment, and the starting and ending points of the voyage or trip that the assessment covers.
              Note to § 140.635. Certain towing vessels subject to § 140.635 are also subject to the voyage planning requirements of 33 CFR 164.80.

              § 140.640
              Pilothouse resource management.
              (a) The officer in charge of a navigational watch must:
              (1) Ensure that other members of the navigational watch have a working knowledge of the navigation assessment required by § 140.635, and understand the chain of command, the decision-making process, and the fact that information sharing is critical to the safety of the vessel.
              (2) Ensure that the navigation assessment required by § 140.635 is complete, updated, communicated and available throughout the trip.
              (3) Ensure that watch change procedures incorporate all items listed in paragraph (a)(1) of this section.
              (4) Take actions (to include delaying watch change or pausing the voyage) if there is reasonable cause to believe that an oncoming watchstander is not immediately capable of carrying out his or her duties effectively.
              (5) Maintain situational awareness and minimize distractions.
              (b) Prior to assuming duties as officer in charge of a navigational watch, a person must:
              (1) Complete the navigation assessment required by § 140.635;
              (2) Verify the operational condition of the towing vessel; and
              (3) Verify that there are adequate personnel available to assume the watch.
              (c) If at any time the officer in charge of a navigational watch is to be relieved when a maneuver or other action to avoid any hazard is taking place, the relief of that officer in charge of a navigational watch must be deferred until such action has been completed.

              § 140.645
              Navigation safety training.
              (a) Prior to assuming duties related to the safe operation of a towing vessel, each crewmember must receive training to ensure that they are familiar with:
              (1) Watchstanding terms and definitions;
              (2) Duties of a lookout;
              (3) Communication with other watchstanders;
              (4) Change of watch procedures;
              (5) Procedures for reporting other vessels or objects; and
              (6) Watchstanding safety.
              (b) Crewmember training must be recorded in the TVR, official logbook, or in accordance with the TSMS applicable to the vessel.
              (c) Credentialed mariners holding Able Seaman or officer endorsements will be deemed to have met the training requirements in this section.

              § 140.650
              Operational readiness of lifesaving and fire suppression and detection equipment.

              The owner, managing operator, or master of a towing vessel must ensure that the vessel's lifesaving and fire suppression and detection equipment complies with the applicable requirements of parts 141 and 142 of this subchapter and is in good working order.

              § 140.655
              Prevention of oil and garbage pollution.
              (a) Each towing vessel must be operated in compliance with:
              (1) Applicable sections of the Federal Water Pollution Control Act, including section 311 of the Federal Water Pollution Control Act, as amended (33 U.S.C. 1321);

              (2) Applicable sections of the Act to Prevent Pollution from Ships (33 U.S.C. 1901 et seq.); and
              (3) Parts 151, 155, and 156, of 33 CFR, as applicable.
              (b) Each towing vessel must be capable of preventing all oil spills from reaching the water during transfers by:
              (1) Pre-closing the scuppers/freeing ports, if the towing vessel is so equipped;
              (2) Using fixed or portable containment of sufficient capacity to contain the most likely spill, if 33 CFR 155.320 does not apply; or
              (3) Pre-deploying sorbent material on the deck around vents and fills.
              (c) No person may intentionally drain oil or hazardous material into the bilge of a towing vessel from any source. For purposes of this section, “oil” has the same meaning as “oil” defined in 33 U.S.C. 1321.

              § 140.660
              Vessel security.
              Each towing vessel must be operated in compliance with:
              (a) The Maritime Transportation Security Act of 2002 (46 U.S.C. Chapter 701); and
              (b) 33 CFR parts 101 and 104, as applicable.

              § 140.665
              Inspection and testing required when making alterations, repairs, or other such operations involving riveting, welding, burning, or like fire-producing actions.
              (a) The inspections and issuance of certificates required by this section must be conducted in accordance with the provisions of NFPA 306 (incorporated by reference, see § 136.112 of this subchapter) before alterations, repairs, or other operations involving riveting, welding, burning, or other fire producing actions may be made aboard a vessel.
              (b) Until an inspection has been made to determine that such operation can be undertaken with safety, no alterations, repairs, or other such operations involving riveting, welding, burning, or like fire-producing actions must be made:
              (1) Within or on the boundaries of cargo tanks which have been used to carry combustible liquid or chemicals in bulk;
              (2) Within or on the boundaries of fuel tanks; or,
              (3) To pipe lines, heating coils, pumps, fittings, or other appurtenances connected to such cargo or fuel tanks.
              (c) Such inspections must be made and evidenced as follows:
              (1) In ports or places in the United States or its territories and possessions the inspection must be made by a marine chemist certificated by the National Fire Protection Association. However, if the services of such certified marine chemist are not reasonably available, the Officer in Charge, Marine Inspection (OCMI), upon the recommendation of the vessel owner and his or her contractor or their representative, must select a person who, in the case of an individual vessel, must be authorized to make such inspection. If the inspection indicated that such operations can be undertaken with safety, a certificate setting forth the fact in writing and qualified as may be required, must be issued by the certified marine chemist or the authorized person before the work is started. Such qualifications must include any requirements as may be deemed necessary to maintain the safe conditions in the spaces certified throughout the operation and must include such additional tests and certifications as considered required. Such qualifications and requirements must include precautions necessary to eliminate or minimize hazards that may be present from protective coatings or residues from cargoes.

              (2) When not in such a port or place, and a marine chemist or such person authorized by the OCMI, is not reasonably available, the inspection must be made by the master or person in charge and a proper entry must be made in the vessel's logbook.
              (d) The master or person in charge must secure copies of certificates issued by the certified marine chemist or such person authorized by the OCMI. The master or person in charge must maintain a safe condition on the vessel by full observance of all qualifications and requirements listed by the marine chemist or person authorized by the OCMI in the certificate.

              § 140.670
              Use of auto pilot.
              Except for towing vessels in compliance with requirements in 33 CFR 164.13(d), when an automatic pilot is used in areas of high traffic density, conditions of restricted visibility, or any other hazardous navigational situations, the master must ensure that:
              (a) It is possible to immediately establish manual control of the ship's steering;
              (b) A competent person is ready at all times to take over steering control; and
              (c) The changeover from automatic to manual steering and vice versa is made by, or under, the supervision of the officer in charge of the navigational watch.

            Subpart G—Navigation and Communication Equipment

              § 140.700
              Applicability.
              This subpart applies to all towing vessels unless otherwise specified. Certain towing vessels are also subject to the navigation safety regulations in 33 CFR part 164.

              § 140.705
              Charts and nautical publications.
              (a) This section applies to a towing vessel not subject to the requirements of 33 CFR 164.72.
              (b) A towing vessel must carry adequate and up-to-date charts, maps, and nautical publications for the intended voyage, including:
              (1) Charts, including electronic charts acceptable to the Coast Guard, of appropriate scale to make safe navigation possible. Towing vessels operating on the Western Rivers must have maps of appropriate scale issued by the Army Corps of Engineers or a river authority;
              (2) “U.S. Coast Pilot” or similar publication;
              (3) Coast Guard light list; and
              (4) Towing vessels that operate the Western Rivers must have river stage(s) or Water Surface Elevations as appropriate to the trip or route, as published by the U.S. Army Corps of Engineers or a river authority, must be available to the person in charge of the navigation watch.
              (c) Extracts or copies from the publications listed in paragraph (b) of this section may be carried, so long as they are applicable to the route.

              § 140.710
              Marine radar.
              Requirements for marine radar are set forth in 33 CFR 164.72.

              § 140.715
              Communications equipment.
              (a) Towing vessels must meet the communications requirements of 33 CFR part 26 and 33 CFR 164.72, as applicable.
              (b) Towing vessels not subject to the provisions of 33 CFR part 26 or 33 CFR 164.72 must have a Very High Frequency-Frequency Modulated (VHF-FM) radio installed and capable of monitoring VHF-FM Channels 13 and 16, except when transmitting or receiving traffic on other VHF-FM channels, when participating in a Vessel Traffic Service (VTS), or when monitoring a channel of a VTS. The VHF-FM radio must be installed at each operating station and connected to a functioning battery backup.
              (c) All towing vessels must have at least one properly operating handheld VHF-FM radio in addition to the radios otherwise required.

              § 140.720
              Navigation lights, shapes, and sound signals.
              Each towing vessel must be equipped with navigation lights, shapes, and sound signals in accordance with the International Regulations for Prevention of Collisions at Sea (COLREGS) or 33 CFR part 84 as appropriate to its area of operation.

              § 140.725
              Additional navigation equipment.
              Towing vessels must be equipped with the following equipment, as applicable to the area of operation:
              (a) Fathometer (except Western Rivers).
              (b) Search light, controllable from the vessel's operating station and capable of illuminating objects at a distance of at least two times the length of the tow.
              (c) Electronic position-fixing device, satisfactory for the area in which the vessel operates, if the towing vessel engages in towing seaward of the navigable waters of the U.S. or more than 3 nautical miles from shore on the Great Lakes.
              (d) Illuminated magnetic compass or an illuminated swing-meter (Western Rivers vessels only). The compass or swing-meter must be readable from each operating station.
              Note to § 140.725. Certain towing vessels subject to § 140.725 are also subject to the requirements of 33 CFR 164.72 and Automatic Identification System requirements of 33 CFR 164.46.

            Subpart H—Towing Safety

              § 140.800
              Applicability.
              This subpart applies to all towing vessels unless otherwise specified. Certain vessels are also subject to the navigation safety regulations in 33 CFR parts 163 and 164.

              § 140.801
              Towing gear.
              The owner, managing operator, master or officer in charge of a navigational watch of a towing vessel must ensure the following:
              (a) The strength of each component used for securing the towing vessel to the tow and for making up the tow is adequate for its intended service.
              (b) The size, material, and condition of towlines, lines, wires, push gear, cables, and other rigging used for making up a tow or securing the towing vessel to a tow must be appropriate for:
              (1) The horsepower or bollard pull of the vessel;
              (2) The static loads and dynamic loads expected during the intended service;
              (3) The environmental conditions expected during the intended service; and
              (4) The likelihood of mechanical damage.
              (c) Emergency procedures related to the tow have been developed and appropriate training provided to the crew for carrying out their emergency duties.

              § 140.805
              Towing safety.
              Prior to getting underway, and giving due consideration to the prevailing and expected conditions of the trip or voyage, the officer in charge of the navigational watch for a towing vessel must ensure that:
              (a) The barges, vessels, or objects making up the tow are properly configured and secured;
              (b) Equipment, cargo, and industrial components on board the tow are properly secured and made ready for transit;
              (c) The towing vessel is safely and securely made up to the tow; and
              (d) The towing vessel has appropriate horsepower or bollard pull and is capable of safely maneuvering the tow.

              § 140.820
              Recordkeeping for towing gear.
              (a) The results of the inspections required by 33 CFR 164.76 must be documented in the TVR, official logbook, or in accordance with the TSMS applicable to the vessel.
              (b) A record of the type, size, and service of each towline, face wire, and spring line, used to make the towing vessel fast to her tow, must be available to the Coast Guard or third-party auditor for review. The following minimum information is required in the record: The dates when examinations were performed, the identification of each item of towing gear examined, and the name(s) of the person(s) conducting the examinations.

            Subpart I—Vessel Records

              § 140.900
              Marine casualty reporting.
              Each towing vessel must comply with the requirements of part 4 of this chapter for reporting marine casualties and retaining voyage records.

              § 140.905
              Official logbooks.
              (a) A towing vessel of the United States, except one on a voyage from a port in the United States to a port in Canada, is required by 46 U.S.C. 11301 to have an official logbook if the vessel is:
              (1) On a voyage from a port in the United States to a foreign port; or
              (2) Of at least 100 gross tons and on a voyage between a port in the United States on the Atlantic Ocean and one on the Pacific Ocean.
              (b) The Coast Guard furnishes, without fee, to masters of vessels of the United States, the official logbook as Form CG-706B or CG-706C, depending on the number of persons employed as crew. The first several pages of this logbook list various acts of Congress governing logbooks and the entries required in them.
              (c) When a voyage is completed, or after a specified time has elapsed, the master must file the official logbook containing required entries with the cognizant OCMI at or nearest the port where the vessel may be.

              § 140.910
              Towing vessel record or record specified by TSMS.
              (a) This section applies to a towing vessel other than a vessel operating only in a limited geographic area or a vessel required by § 140.905 to maintain an official logbook.
              (b) A towing vessel subject to this section must maintain a TVR or in accordance with the TSMS applicable to the towing vessel.
              (c) The TVR must include a chronological record of events as required by this subchapter. The TVR may be electronic or paper.
              (d) Except as required by §§ 140.900 and 140.905, records do not need to be filed with the Coast Guard, but must be kept available for review by the Coast Guard upon request. Records, unless required to be maintained for a longer period by statute or other federal regulation, must be retained for at least 1 year after the date of the latest entry.

              § 140.915
              Items to be recorded.
              (a) The following list of items must be recorded in the TVR, official logbook, or in accordance with the TSMS applicable to the vessel:
              (1) Personnel records, in accordance with § 140.400;
              (2) Safety orientation, in accordance with § 140.410;
              (3) Record of drills and instruction, in accordance with § 140.420;
              (4) Examinations and tests, in accordance with § 140.615;
              (5) Operative navigational safety equipment, in accordance with § 140.620;
              (6) Navigation assessment, in accordance with § 140.635;
              (7) Navigation safety training, in accordance with § 140.645;
              (8) Oil residue discharges and disposals, in accordance with § 140.655;
              (9) Record of inspection of towing gear, in accordance with § 140.820; and
              (10) Fire-detection and fixed fire-extinguishing, in accordance with § 142.240.
              (b) For the purposes of this subchapter, if items are recorded electronically in a TVR or other record as specified by the TSMS applicable to the towing vessel, these electronic entries must include the date and time of entry and name of the person making the entry. If after an entry has been made, someone responsible for entries determines there is an error in an entry, any entries to correct the error must include the date and time of entry and name of the person making the correction and must preserve a record of the original entry being corrected.
              Note to § 140.915. For towing vessels subject to 46 U.S.C. 11301, there are statutory requirements in that U.S. Code section for additional items that must be entered in the official logbook. Regarding requirements outside this subchapter, such as requirements in 33 CFR 151.25 to make entries in an oil record book, § 140.915 does not change those requirements.

            Subpart J—Penalties

              § 140.1000
              Statutory penalties.
              Violations of the provisions of this subchapter will subject the violator to the applicable penalty provisions of Subtitle II of Title 46, and Title 18, United States Code.

              § 140.1005
              Suspension and revocation.
              An individual is subject to proceedings under the provisions of 46 U.S.C. 7703 and 7704, and part 5 of this chapter with respect to suspension or revocation of a license, certificate, document, or credential if the individual holds a license, certificate of registry, merchant mariner document, or merchant mariner credential and:
              (a) Commits an act of misconduct, negligence or incompetence;
              (b) Uses or is addicted to a dangerous drug; or
              (c) Violates or fails to comply with this subchapter or any other law or regulation intended to promote marine safety; or
              (d) Becomes a security risk, as described in 46 U.S.C. 7703.

          Pt. 141
          PART 141—LIFESAVING

              Subpart A—General
              Sec.
              141.100
              Purpose.
              141.105
              Applicability and delayed implementation for existing vessels.

              Subpart B—General Requirements for Towing Vessels
              141.200
              General provisions.
              141.225
              Alternate arrangements or equipment.
              141.230
              Readiness.
              141.235
              Inspection, testing, and maintenance.
              141.240
              Requirements for training crews.

              Subpart C—Lifesaving Requirements for Towing Vessels
              141.305
              Survival craft requirements for towing vessels.
              141.310
              Stowage of survival craft.
              141.315
              Marking of survival craft and stowage locations.
              141.320
              Inflatable survival craft placards.
              141.325
              Survival craft equipment.
              141.330
              Skiffs as survival craft.
              141.340
              Lifejackets.
              141.350
              Immersion suits.
              141.360
              Lifebuoys.
              141.370
              Miscellaneous lifesaving requirements for towing vessels.
              141.375
              Visual distress signals.
              141.380
              Emergency position indicating radio beacon (EPIRB).
              141.385
              Line throwing appliance.

            Authority:
            46 U.S.C. 3103, 3301, 3306, 3308, 3316, 8104, 8904; 33 CFR 1.05; DHS Delegation 0170.1.

            Source:
            USCG-2006-24412, 81 FR 40101, June 20, 2016, unless otherwise noted.

            Subpart A—General

              § 141.100
              Purpose.
              This part contains requirements for lifesaving equipment, arrangements, systems, and procedures on towing vessels.

              § 141.105
              Applicability and delayed implementation for existing vessels.
              (a) This part applies to all towing vessels subject to this subchapter.
              (1) An existing towing vessel must comply with the requirements in this part no later than either July 20, 2018 or the date the vessel obtains a Certificate of Inspection (COI), whichever date is earlier.
              (2) The delayed implementation provisions in paragraph (a)(1) of this section do not apply to a new towing vessel.
              (b) A towing vessel on an international voyage, subject to SOLAS (incorporated by reference, see § 136.112 of this subchapter), must meet the applicable requirements in subchapter W of this chapter.
              (c) Towing vessels in compliance with SOLAS Chapter III will be deemed in compliance with this part.

            Subpart B—General Requirements for Towing Vessels

              § 141.200
              General provisions.
              (a) Unless otherwise specified, all lifesaving equipment must be approved by the Commandant under the approval series specified in each section. Lifesaving equipment for personal use which is not required by this part need not be approved by the Commandant.

              (b) A listing of approved equipment and materials may be found at https://cgmix.uscg.mil/equipment. Each cognizant Officer in Charge, Marine Inspection (OCMI) may be contacted for information concerning approved equipment and materials.

              (c) Equipment requirements are based on the area in which a towing vessel is operating, not the route for which it is certificated. However, the towing vessel must be equipped per the requirements of its certificated route at the time of certification.

              § 141.225
              Alternate arrangements or equipment.
              (a) Alternate arrangements or equipment to comply with this part may be approved in accordance with § 136.115 of this subchapter.
              (b) If a Towing Safety Management System (TSMS) is applicable to the towing vessel, alternative means for complying with §§ 141.340, 141.350, and 141.360 may be approved by a third-party organization (TPO) and documented in the TSMS applicable to the vessel.
              (c) The Coast Guard may approve a novel lifesaving appliance or arrangement as an equivalent if it has performance characteristics at least equivalent to the appliance or arrangement required under this subchapter, and if it has been evaluated and tested under IMO Resolution A.520(13) (incorporated by reference, see § 136.112 of this subchapter). Requests for evaluation of novel lifesaving appliances must be sent to the Commandant (CG-ENG).
              (d) The cognizant OCMI may require a towing vessel to carry specialized or additional lifesaving equipment if:
              (1) He or she determines that the conditions of the voyage render the requirements of this part inadequate; or
              (2) The towing vessel is operated in globally remote areas or severe environments not covered under this part. Such areas may include, but are not limited to, polar regions, remote islands, areas of extreme weather, and other remote areas where timely emergency assistance cannot be anticipated.

              § 141.230
              Readiness.
              The master must ensure that all lifesaving equipment is properly maintained and ready for use at all times.

              § 141.235
              Inspection, testing, and maintenance.
              (a) All lifesaving equipment must be tested and maintained in accordance with the minimum requirements of § 199.190 of this chapter, as applicable, and the vessel's TSMS, if the vessel has a TSMS.
              (b) Inspections and tests of lifesaving equipment must be recorded in the TVR, official logbook, or in accordance with any TSMS applicable to the vessel. The following minimum information is required:
              (1) The dates when inspections and tests were performed, the number or other identification of each unit inspected and tested, the results of the inspections and tests, and the name of the crewmember, surveyor or auditor and any others conducting the inspections and tests; and
              (2) Receipts and other records documenting these inspections and tests must be retained for at least 1 year after the expiration of the COI and made available upon request.

              § 141.240
              Requirements for training crews.
              Training requirements are contained in part 140 of this subchapter.

            Subpart C—Lifesaving Requirements for Towing Vessels

              § 141.305
              Survival craft requirements for towing vessels.
              (a) General purpose. Survival craft provide a means for survival when evacuation from the towing vessel is necessary. The craft and related equipment should be selected so as to provide for the basic needs of the crew, such as shelter from life threatening elements, until rescue resources are expected to arrive, taking into account the scope and nature of the towing vessel's operations.
              (b) Functional requirements. A towing vessel's survival craft must meet the functional requirements of paragraphs (b)(1) through (5) of this section. Functional requirements describe the objectives of the regulation. Survival craft must:
              (1) Be readily accessible;
              (2) Have an aggregate capacity sufficient to accommodate the total number of individuals onboard, as specified in paragraph (c) of this section;

              (3) Provide a means for sheltering its complement appropriate to the route;

              (4) Provide minimum equipment for survival if recovery time is expected to be greater than 24 hours; and
              (5) Be marked so that an individual not familiar with the operation of the specific survival craft has sufficient guidance to utilize the craft for its intended use.
              (c) Compliance options. A towing vessel must meet the applicable functional requirements. Compliance with the functional requirements of paragraph (b) of this section may be met by one of these two options:
              (1) A towing vessel that meets the prescriptive requirements of paragraph (d) of this section will have complied with the functional requirements; or
              (2) If an owner or managing operator chooses to meet the functional requirement through means other than as specified in paragraph (c)(1) of this section, the means must be accepted by the cognizant OCMI or, if the vessel has a TSMS, then by a TPO and, in the latter case, documented in the TSMS applicable to the vessel. The design, testing, and examination scheme for meeting these functional requirements must be included as part of the TSMS applicable to the vessel.
              (d) Prescriptive requirements. (1) Except as provided in paragraphs (d)(2) through (4) of this section, each towing vessel must carry the survival craft specified in Table 141.305 of this section, as appropriate for the towing vessel, in an aggregate capacity to accommodate the total number of individuals onboard.

                Table 141.305—Survival Craft

                  Equipment(approval series)

                  Area of operation
                  Limitedgeographic
                    area or
                    protected
                    waters

                  Rivers
                  Great Lakes and lakes, bays, and sounds as defined in § 136.110
                  ≤3 milesfrom shore

                  >3 milesfrom shore

                  Coastwise and ltd. coastwise
                  ≤3 milesfrom shore

                  >3 milesfrom shore

                  Oceans

                    Cold Water Operation

                  Inflatable Buoyant Apparatus (160.010)
                  None 1

                    2 100%

                    2 100%

                    2 100%

                  Inflatable Liferaft with SOLAS B Pack (160.151)
                  None 1

                  100%

                  100%

                  Inflatable Liferaft with SOLAS A Pack (160.151)
                  None 1

                  100%

                    Warm Water Operation

                  Rigid Buoyant Apparatus (160.010)
                  None 1

                    2 100%

                    2 100%

                    2 100%

                    2 100%

                  Inflatable Liferaft with SOLAS B Pack (160.151)
                  None 1

                    3 100%

                  Inflatable Liferaft with SOLAS A Pack (160.151)
                  None 1

                  100%

                  1 No survival craft are required unless deemed necessary by the cognizant OCMI or a TSMS applicable to the towing vessel.

                  2 A skiff that meets requirements in § 141.330(a) through (f) may be substituted for all or part of required equipment.

                  3 Inflatable buoyant apparatus (approval series 160.010) may be accepted or substituted if the vessel carries a 406 MHz Cat 1 emergency position indicating radio beacon (EPIRB) meeting 47 CFR part 80.

              (2) The following approved survival craft may be substituted for survival craft required by Table 141.305 of this section:
              (i) A lifeboat approved under approval series 160.135 may be substituted for any survival craft required by this section, provided it is arranged and equipped in accordance with part 199 of this chapter.
              (ii) An inflatable liferaft approved under approval series 160.051 or 160.151, may be substituted for an inflatable buoyant apparatus or rigid buoyant apparatus.
              (iii) An inflatable buoyant apparatus approved under approval series 160.010 may be substituted for a rigid buoyant apparatus.
              (iv) A life float approved under approval series 160.027 may be substituted for a rigid buoyant apparatus.
              (3) Unless it is determined to be necessary by the cognizant OCMI under § 141.225, or a TSMS applicable to the towing vessel, each towing vessel that operates solely on rivers need not carry survival craft if:

              (i) It carries a 406 MHz Cat 1 EPIRB meeting 47 CFR part 80;

              (ii) It is designed for pushing ahead and has a TSMS that contains procedures for evacuating crewmembers onto the tow or other safe location; or
              (iii) It operates within 1 mile of shore.
              (4) A towing vessel which is not required by this part to carry survival craft may carry a non-approved survival craft as excess equipment, provided that it is maintained in good working condition and maintained according to the manufacturer's instructions.

              § 141.310
              Stowage of survival craft.
              Survival craft must be stowed in accordance with the requirements of § 199.130 of this chapter, as far as is practicable on existing towing vessels.

              § 141.315
              Marking of survival craft and stowage locations.
              Survival craft and stowage locations must be marked in accordance with the requirements of §§ 199.176 and 199.178 of this chapter.

              § 141.320
              Inflatable survival craft placards.
              Every towing vessel equipped with an inflatable survival craft must have, in conspicuous places near each inflatable survival craft, approved placards or other posted instructions for launching and inflating inflatable survival craft.

              § 141.325
              Survival craft equipment.
              (a) Each item of survival craft equipment must be of good quality, effective for the purpose it is intended to serve, and secured to the craft.
              (b) Each towing vessel carrying a lifeboat must carry equipment in accordance with § 199.175 of this chapter.
              (c) Each life float and rigid buoyant apparatus must be fitted with a lifeline, pendants, a painter, and floating electric water light approved under approval series 161.010.

              § 141.330
              Skiffs as survival craft.
              A skiff may be substituted for all or part of the approved survival craft for towing vessels that do not operate more than 3 miles from shore. A skiff used as a survival craft does not require Coast Guard approval but must:
              (a) Be capable of being launched within 5 minutes under all circumstances;
              (b) Be of suitable size for all persons on board the towing vessel;
              (c) Not exceed the loading specified on the capacity plate required by 33 CFR 183.23;
              (d) Not contain modifications affecting the buoyancy or structure of the skiff;
              (e) Be of suitable design for the vessel's intended service; and
              (f) Be marked in accordance with §§ 199.176 and 199.178 of this chapter.

              § 141.340
              Lifejackets.
              (a) Each towing vessel must carry at least one appropriately-sized lifejacket, approved under approval series 160.002, 160.005, 160.055, 160.155, or 160.176, for each person on board.
              (b) For towing vessels with berthing aboard, a sufficient number of additional lifejackets must be carried so that a lifejacket is immediately available for persons at each normally manned watch station.
              (c) Where alternative means are used to meet the requirements of this section, as permitted by § 141.225, there must be at least one lifejacket for each person onboard. Any TSMS applicable to the towing vessel must specify the number and location of lifejackets in such a manner as to facilitate immediate accessibility at normally occupied spaces including, but not limited to, accommodation spaces and watch stations.
              (d) Lifejackets must be readily accessible.
              (e) If the towing vessel carries inflatable lifejackets they must be of similar design to each other and have the same mode of operation.
              (f) Each lifejacket must be marked:
              (1) In block capital letters with the name of the vessel; and
              (2) With Type I retro-reflective material approved under approval series 164.018. The arrangement of the retro-reflective material must meet IMO Resolution A.658(16) (incorporated by reference, see § 136.112 of this subchapter).

              (g) Lifejackets must have the following attachments and fittings:

              (1) Each lifejacket must have a lifejacket light approved under approval series 161.012 or 161.112 securely attached to the front shoulder area of the lifejacket.
              (2) Each lifejacket must have a whistle firmly secured by a cord to the lifejacket.
              (h) Stowage positions for lifejackets stowed in a berthing space or stateroom and all lifejacket containers must be marked in block capital letters and numbers with the minimum quantity, identity, and, if sizes other than adult or universal sizes are used on the vessel, the size of the lifejackets stowed inside the container. The equipment may be identified in words or with the appropriate symbol from IMO Resolution A.760(18) (incorporated by reference, see § 136.112 of this subchapter).

              § 141.350
              Immersion suits.
              (a) Except as provided in paragraph (a)(4) of this section, each towing vessel operating north of lat. 32° N. or south of lat. 32° S. must carry the number of immersion suits as prescribed in this paragraph (a):
              (1) Each towing vessel operating in those regions must carry at least one appropriate-size immersion suit, approved under approval series 160.171, for each person onboard.
              (2) In addition to the immersion suits required under paragraph (a)(1) of this section, each watch station, work station, and industrial work site must have enough immersion suits to equal the number of persons normally on watch in, or assigned to, the station or site at one time. However, an immersion suit is not required at a station or site for a person whose cabin or berthing area (and the immersion suits stowed in that location) is readily accessible to the station or site.
              (3) Where alternative means are used to meet the requirements of this section, as permitted by § 141.225, there must be at least one immersion suit of the appropriate size for each person onboard. Any TSMS applicable to the towing vessel must specify the number and location of immersion suits in such a manner as to facilitate immediate accessibility at normally occupied spaces including, but not limited to, accommodation spaces and watch stations.
              (4) A towing vessel operating on rivers or in a limited geographic area is not required to carry immersion suits.
              (b) Immersion suits carried on towing vessels must meet the requirements of § 199.70(c) and (d) of this chapter.

              § 141.360
              Lifebuoys.
              (a) A towing vessel must carry lifebuoys as follows:
              (1) A towing vessel less than 26 feet length must carry a minimum of one lifebuoy of not less than 510 millimeters (20 inches) in diameter.
              (2) A towing vessel of at least 26 feet, but less than 79 feet, in length must carry a minimum of two lifebuoys located on opposite sides of the vessel where personnel are normally present. Lifebuoys must be at least 610 millimeters (24 inches) in diameter.
              (3) A towing vessel 79 feet or more in length must carry four lifebuoys, with one lifebuoy located on each side of the operating station. Lifebuoys must be at least 610 millimeters (24 inches) in diameter.
              (4) Where alternative means are used to meet the requirements of this section, as permitted by § 141.225, any TSMS applicable to the towing vessel must specify the number and location of lifebuoys in such a manner as to facilitate rapid deployment of lifebuoys from exposed decks, including the pilot house.
              (b) Each lifebuoy on a towing vessel must:
              (1) Be approved under approval series 160.050 or 160.150;
              (2) Be capable of being rapidly cast loose;
              (3) Not be permanently secured to the vessel in any way;
              (4) Be marked in block capital letters with the name of the vessel; and
              (5) Be orange in color, if on a vessel on an oceans or coastwise route.
              (c) Lifebuoys must have the following attachments and fittings:
              (1) At least one lifebuoy must have a lifeline, secured around the body of the lifebuoy. If more than one lifebuoy is carried, at least one must not have a lifeline attached. Each lifeline on a lifebuoy must:
              (i) Be buoyant;

              (ii) Be of at least 18.3 meters (60 feet) in length;
              (iii) Be non-kinking;
              (iv) Have a diameter of at least 7.9 millimeters (5/16 inch);
              (v) Have a breaking strength of at least 5 kilonewtons (1,124 pounds); and
              (vi) Be of a dark color if synthetic, or of a type certified to be resistant to deterioration from ultraviolet light.
              (2) At least two lifebuoys on a towing vessel greater than 26 feet must be fitted with a floating electric water light approved under approval series 161.010 or 161.110, unless the towing vessel is limited to daytime operation, in which case no floating electric water light is required.
              (3) If a towing vessel carries only one lifebuoy, the lifebuoy must be fitted with a floating electric water light approved under approval series 161.010 or 160.110, unless the towing vessel is limited to daytime operation, in which case no floating electric water light is required. The water light must be attached by the lanyard with a corrosion-resistant clip to allow the water light to be quickly disconnected from the lifebuoy. The clip must have a strength of at least 22.7 kilograms (50 pounds).
              (4) Each lifebuoy with a floating electric water light must have a lanyard of at least 910 millimeters (3 feet) in length, but not more than 1,830 millimeters (6 feet), securing the water light around the body of the lifebuoy.

              § 141.370
              Miscellaneous life saving requirements for towing vessels.
              Miscellaneous lifesaving requirements are summarized in Table 141.370 of this section. Equipment requirements are based on the area in which a towing vessel is operating, not the route for which it is certificated.

                Table 141.370—Miscellaneous Lifesaving Equipment

                  Equipment(46 CFR section)

                  Area of operation
                  Limitedgeographic area

                  Rivers
                  Great Lakes and lakes, bays, and sounds as defined in § 136.110
                  ≤3 miles from shore
                  ≤3 miles from shore
                  Coastwise and ltd. coastwise
                  ≤3 miles from shore
                  >3 miles from shore
                  Oceans

                  Visual Distress Signals (§ 141.375)
                  3 day and 3 night
                  3 day and 3 night
                  3 day and 3 night
                  6 day and 6 night
                  3 day and 3 night
                  6 day and 6 night
                  6 day and 6 night.

                  EPIRBs (§ 141.380)

                  1 1

                  1−
                  1
                  1

                  Line Throwing Appliances (§ 141.385)

                  1−
                  1

                  1 Great Lakes service only.

              § 141.375
              Visual distress signals.
              (a) Carriage requirement. A towing vessel must carry a combination of day and night visual distress signals indicated in Table 141.370 of § 141.370 for specified areas where the vessel operates.
              (b) Day and night visual distress signals. Hand-held red flare distress signals, approved under approval series 160.021 or 160.121, and hand-held rocket-propelled parachute red flares, approved under approval series 160.036 or 160.136, are acceptable as both day and night signals.
              (c) Signals for day visual distress only. Floating orange smoke signals, approved under approval series 160.022, 160.122, or 160.157, and hand-held orange smoke distress signals, approved under approval series 160.037, are only acceptable as day signals.
              (d) Limited geographic area. A vessel operating in a limited geographic area on a short run limited to approximately 30 minutes away from the dock is not required to carry visual distress signals under this section.
              (e) Stowage. Each pyrotechnic distress signal carried to meet this section must be stowed in either:

              (1) A portable watertight container carried at the operating station. Portable watertight containers for pyrotechnic distress signals must be of a bright color and must be clearly marked in legible contrasting letters at least 12.7 millimeters (0.5 inches) high with “DISTRESS SIGNALS”; or

              (2) A pyrotechnic locker secured above the freeboard deck, away from heat, in the vicinity of the operating station.

              § 141.380
              Emergency position indicating radio beacon (EPIRB).
              (a) Each towing vessel operating on oceans, coastwise, limited coastwise, or beyond 3 nautical miles from shore upon the Great Lakes must carry a Category 1, 406 MHz satellite Emergency Position Indicating Radio Beacon (EPIRB) that meets the requirements of 47 CFR part 80.
              (b) When the towing vessel is underway, the EPIRB must be stowed in its float-free bracket with the controls set for automatic activation and be mounted in a manner so that it will float free if the towing vessel sinks.
              (c) The name of the towing vessel must be marked or painted in clearly legible letters on each EPIRB, except on an EPIRB in an inflatable liferaft.
              (d) The owner or managing operator must maintain valid proof of registration.

              Note to paragraph (d). Registration information can be found at www.beaconregistration.noaa.gov/.

              § 141.385
              Line throwing appliance.
              Each towing vessel operating in oceans and coastwise service must have a line throwing appliance approved under approval series 160.040.
              (a) Stowage. The line throwing appliance and its equipment must be readily accessible for use.
              (b) Additional equipment. The line throwing appliance must have:
              (1) The equipment on the list provided by the manufacturer with the approved appliance; and
              (2) An auxiliary line that:
              (i) Is at least 450 meters (1,500 feet) long;
              (ii) Has a breaking strength of at least 40 kilonewtons (9,000 pounds-force); and
              (iii) Is, if synthetic, of a dark color or certified by the manufacturer to be resistant to deterioration from ultraviolet light.

          Pt. 142
          PART 142—FIRE PROTECTION

              Subpart A —General
              Sec.
              142.100
              Purpose.
              142.105
              Applicability and delayed implementation for existing vessels.

              Subpart B—General Requirements for Towing Vessels
              142.205
              Alternate standards.
              142.210
              Alternate arrangements or equipment.
              142.215
              Approved equipment.
              142.220
              Fire hazards to be minimized.
              142.225
              Storage of flammable or combustible products.
              142.226
              Firefighter's outfit.
              142.227
              Fire axe.
              142.230
              Portable fire extinguishers and semi-portable fire-extinguishing systems.
              142.231
              Exception for portable and semi-portable fire extinguishers required for existing towing vessels.
              142.235
              Vessels contracted for prior to November 19, 1952.
              142.240
              Inspection, testing, maintenance, and records.
              142.245
              Requirements for training crews to respond to fires.

              Subpart C—Fire Extinguishing and Detection Requirements
              142.300
              Excepted vessels.
              142.315
              Additional fire-extinguishing equipment requirements.
              142.325
              Fire pumps, fire mains, and fire hoses.
              142.330
              Fire-detection system requirements.

            Authority:
            46 U.S.C. 3103, 3301, 3306, 3308, 3316, 8104, 8904; 33 CFR 1.05; DHS Delegation 0170.1.

            Source:
            USCG-2006-24412, 81 FR 40101, June 20, 2016, unless otherwise noted.

            Subpart A—General

              § 142.100
              Purpose.
              This part contains requirements for fire suppression and detection equipment and arrangements on towing vessels.

              § 142.105
              Applicability and delayed implementation for existing vessels.
              This part applies to all towing vessels subject to this subchapter.

              (a) An existing towing vessel must comply with the requirements in this part no later than either July 20, 2018 or the date the vessel obtains a Certificate of Inspection (COI), whichever date is earlier.
              (b) The delayed implementation provisions in paragraph (a) of this section do not apply to a new towing vessel.

            Subpart B—General Requirements for Towing Vessels

              § 142.205
              Alternate standards.
              (a) Towing vessels in compliance with Chapter II-2 of SOLAS (incorporated by reference, see § 136.112 of this subchapter) will be deemed to be in compliance with this part.
              (b) Towing vessels that comply with other alternate standards, deemed by the Commandant to provide an equivalent level of safety and performance, will be in compliance with this part.

              § 142.210
              Alternate arrangements or equipment.
              (a) Alternate arrangements or equipment to comply with this part may be approved in accordance with § 136.115 of this subchapter.
              (b) All owners or operators of towing vessels with a Towing Safety Management System (TSMS) may comply with the requirements of subpart B of this part by outfitting their vessels with appropriate alternate arrangements or equipment so long as these variations provide an equivalent level of safety and performance and are properly documented in the TSMS.
              (c) The cognizant Officer in Charge, Marine Inspection (OCMI) may require a towing vessel to carry specialized or additional fire protection, suppression, or detection equipment if:
              (1) He or she determines that the conditions of the voyage render the requirements of this part inadequate; or
              (2) The towing vessel is operated in globally remote areas or severe environments not covered under this part. These areas may include, but are not limited to, polar regions, remote islands, areas of extreme weather, and other remote areas where timely emergency assistance cannot be anticipated.

              § 142.215
              Approved equipment.
              (a) All portable fire extinguishers, semi-portable fire-extinguishing systems, and fixed fire-extinguishing systems required by this part must be approved by the Commandant (CG-ENG). Where other equipment in this part is required to be approved, such equipment requires the specific approval of the Commandant.

              (b) A listing of approved equipment and materials may be found online at https://cgmix.uscg.mil/equipment. Each cognizant OCMI may be contacted for information concerning approved equipment and materials.
              (c) New installations of fire-extinguishing and fire-detection equipment of a type not required, or in excess of that required by this part, may be permitted—
              (1) If Coast Guard approved;
              (2) If accepted by the local OCMI or TPO, as applicable; or
              (3) If equipment and components are listed and labeled by an independent Nationally Recognized Testing Laboratory (NRTL), as that term is defined in 29 CFR 1910.7, and are designed, installed, tested, and maintained in accordance with an appropriate industry standard and the manufacturer's specific guidance.
              (d) Existing equipment and installations, of a type not required, or in excess of that required by this part, not meeting the applicable requirements of this part may be continued in service so long as they are in good condition and accepted by the local OCMI or TPO.
              [USCG-2006-24412, 81 FR 40101, June 20, 2016, as amended by USCG-2017-1060, 83 FR 8180, Feb. 26, 2018; USCG-2017-1060, 83 FR 53822, Oct. 25, 2018]

              § 142.220
              Fire hazards to be minimized.
              Each towing vessel must be maintained and operated so as to minimize fire hazards and to ensure the following:
              (a) All bilges and void spaces are kept free from accumulation of combustible and flammable materials and liquids insofar as practicable.
              (b) Storage areas are kept free from accumulation of combustible and flammable materials insofar as practicable.

              § 142.225
              Storage of flammable or combustible products.
              (a) Paints, coatings, or other flammable or combustible products onboard a towing vessel must be stored in a designated storage room or cabinet when not in use.
              (b) If a storage room is provided, it may be any room or compartment that is free of ignition sources.
              (c) If a dedicated storage cabinet is provided it must be secured to the vessel so that it does not move and must be either:
              (1) A flammable liquid storage cabinet that satisfies UL 1275 (incorporated by reference, see § 136.112 of this subchapter); or
              (2) A flammable liquid storage cabinet that satisfies FM Approvals Standard 6050 (incorporated by reference, see § 136.112 of this subchapter); or
              (3) Another suitable steel container that provides an equivalent level of protection.
              (d) A 40-B portable fire extinguisher must be located near the storage room or cabinet. This is in addition to the portable fire extinguishers required by tables 142.230(a) and 142.230(b) of this part.
              [USCG-2006-24412, 81 FR 40101, June 20, 2016, as amended by USCG-2017-1060, 83 FR 8180, Feb. 26, 2018]

              § 142.226
              Firefighter's outfit.
              Each towing vessel 79 feet or more in length operating on oceans and coastwise routes that does not have an installed fixed fire-extinguishing system must have the following:
              (a) At least two firefighter's outfits that meet NFPA 1971 (incorporated by reference, see § 136.112 of this subchapter); and
              (b) Two self-contained breathing apparatus of the pressure demand, open circuit type, approved by the National Institute for Occupational Safety and Health (NIOSH), under 42 CFR part 84. The breathing apparatus must have a minimum 30-minute air supply and full facepiece.

              § 142.227
              Fire axe.
              Each towing vessel must be equipped with at least one fire axe that is readily accessible for use from the exterior of the vessel.

              § 142.230
              Portable fire extinguishers and semi-portable fire-extinguishing systems.
              (a) Towing vessels of 65 feet or less in length must carry at least the minimum number of portable fire extinguishers set forth in table 142.230(a).

                Table 142.230(a)—10-B:C Portable Fire Extinguishers

                  Length, feet
                  Minimum number of 10-B:C portable fire extinguishersrequired 1

                  No fixed fire-extinguishing system inmachinery space

                  Fixed fire-extinguishing
                    system in
                    machinery space

                  Under 26 2

                  1
                  0

                  26 and over, but under 40
                  2
                  1

                  40 and over, but not over 65
                  3
                  2

                  1 One 40-B:C portable fire extinguisher may be substituted for two 10-B:C portable fire extinguishers.

                  2 See § 136.105 of this subchapter concerning vessels under 26 feet.

              (b) Towing vessels of more than 65 feet in length must carry—
              (1) At least the minimum number of portable fire extinguishers set forth in table 142.230(b); and

              (2) One 40-B portable fire extinguisher fitted in the engine room for each 1,000 brake horsepower of the main engines or fraction thereof. A towing vessel is not required to carry more than six additional 40-B portable fire extinguishers in the engine room for this purpose, regardless of horsepower.

                Table 142.230(b)—40-B:C Portable Fire Extinguishers

                  Gross tonnage—
                  Over
                  Not over
                  Minimum numberof 40-B:C
                    portable fire
                    extinguishers

                  50
                  1

                  50
                  100
                  2

                  100
                  500
                  3

                  500
                  1,000
                  6

                  1,000

                  8

              (c) The frame or support of any semi-portable fire extinguisher fitted with wheels must be welded or otherwise permanently attached to a steel bulkhead or deck to prevent it from rolling under heavy sea conditions.
              (d) Extinguishers with larger numerical ratings or multiple letter designations may be used if the extinguishers meet the minimum requirements of this section.
              [USCG-2017-1060, 83 FR 8180, Feb. 26, 2018]

              § 142.231
              Exception for portable and semi-portable fire extinguishers required for existing towing vessels.
              (a) Previously installed fire extinguishers with extinguishing capacities smaller than what is required by § 142.230 of this part need not be replaced and may be continued in service so long as they are maintained in good condition to the satisfaction of the OCMI.
              (b) All new equipment and installations must meet the applicable requirements in this part for new vessels.
              [USCG-2017-1060, 83 FR 8181, Feb. 26, 2018]

              § 142.235
              Vessels contracted for prior to November 19, 1952.
              (a) Towing vessels contracted for construction prior to November 19, 1952, must meet the applicable provisions of this part concerning the number and general type of equipment required.
              (b) Existing equipment and installations previously approved, but not meeting the applicable requirements for approval by the Commandant, may be continued in service so long as they are in good condition.
              (c) All new installations and replacements must meet the requirements of this part.

              § 142.240
              Inspection, testing, maintenance, and records.
              (a) Inspection and testing. All portable fire extinguishers, semi-portable fire-extinguishing systems, fire-detection systems, and fixed fire-extinguishing systems, including ventilation, machinery shutdowns, and fixed fire-extinguishing system pressure-operated dampers on board the vessel, must be inspected or tested at least once every 12 months, as prescribed in paragraphs (a)(1) through (8) of this section, or more frequently if otherwise required by the TSMS applicable to the vessel.
              (1) Portable and semi-portable fire extinguishers must be inspected, maintained, and tested in accordance with the inspection, maintenance procedures, and hydrostatic pressure tests required by Chapters 7 and 8 of NFPA 10, Standard for Portable Fire Extinguishers (incorporated by reference, see § 136.112 of this subchapter), with the frequency specified by NFPA 10 and as amended here:
              (i) Certification or licensing by a state or local jurisdiction as a fire extinguisher servicing agency will be accepted by the Coast Guard as meeting the personnel certification requirements of NFPA 10 for annual maintenance and recharging of extinguishers.
              (ii) Monthly inspections required by NFPA 10 may be conducted by the owner, operator, person-in-charge, or a designated member of the crew.
              (iii) Non-rechargeable or non-refillable extinguishers must be inspected and maintained in accordance with NFPA 10; however, the annual maintenance need not be conducted by a certified person and can be conducted by the owner, operator, person-in-charge, or a designated member of the crew.

              (iv) The owner or managing operator must provide satisfactory evidence of the required servicing to the marine inspector or TPO, as applicable. If any of the equipment or records have not been properly maintained, a qualified servicing facility must perform the required inspections, maintenance procedures, and hydrostatic pressure tests. A tag issued by a qualified servicing organization, and attached to each extinguisher, may be accepted as evidence that the necessary maintenance procedures have been conducted.

              (2) Fixed fire-extinguishing systems must be inspected and tested, as required by table 142.240 of this section, in addition to the tests required by §§ 147.60 and 147.65 of subchapter N of this chapter.
              (3) Flexible connections and discharge hoses on all semi-portable extinguishers and fixed extinguishing systems must be inspected and tested in accordance with § 147.65 of this chapter.
              (4) All cylinders containing compressed gas must be tested and marked in accordance with § 147.60 of this chapter.
              (5) All piping, controls, valves, and alarms must be inspected; and the operation of controls, alarms, ventilation shutdowns, and pressure-operated dampers for each fixed fire-extinguishing system and detecting system must be tested, to determine that the system is operating properly.
              (6) The fire main system must be charged, and sufficient pressure must be verified at the most remote and highest outlets.
              (7) All fire hoses must be inspected for excessive wear, and subjected to a test pressure equivalent to the maximum service pressure. All fire hoses which are defective and incapable of repair must be destroyed.
              (8) All smoke- and fire-detection systems, including detectors and alarms, must be tested.

                Table 142.240—Table 142.240 to paragraph (a)—Fixed fire-extinguishing systems

                  Type system
                  Test

                  Carbon dioxide
                  Weigh cylinders. Recharge if weight loss exceeds 10 percent of weight of the charge. Test time delays, alarms, and ventilation shutdowns with carbon dioxide, nitrogen, or other nonflammable gas as stated in the system manufacturer's instruction manual. Inspect hoses for damage or decay. Ensure that nozzles are unobstructed. Cylinders must be tested and marked, and all flexible connections on fixed carbon dioxide systems must be tested or renewed, as required by §§ 147.60 and 147.65 of this chapter.

                  Halon and Halocarbon
                  Recharge or replace if weight loss exceeds 5 percent of the weight of the charge or if cylinder has a pressure gauge, recharge cylinder if pressure loss exceeds 10 percent adjusted for temperature. Test time delays, alarms, and ventilation shutdowns with carbon dioxide, nitrogen, or other nonflammable gas as stated in the system manufacturer's instruction manual. Inspect hoses for damage or decay. Ensure that nozzles are unobstructed. Cylinders must be tested and marked, and all flexible connections to Halon 1301 and halocarbon cylinders must be tested or renewed, as required by §§ 147.60 and 147.65 or § 147.67 of this chapter.NOTE: Halon 1301 system approvals have expired, but existing systems may be retained if they are in good and serviceable condition to the satisfaction of the Coast Guard inspector.

                  Dry Chemical (cartridge operated)
                  Inspect pressure cartridge and replace if end is punctured or if determined to have leaked or is in an unsuitable condition. Inspect hose and nozzle to see if they are clear. Insert charged cartridge. Ensure dry chemical is free flowing (not caked) and extinguisher contains full charge.

                  Dry chemical (stored pressure)
                  See that pressure gauge is within operating range. If not, or if the seal is broken, weigh or otherwise determine that extinguisher is fully charged with dry chemical. Recharge if pressure is low or dry chemical is needed.

                  Foam (stored pressure)
                  See that pressure gauge, if so equipped, is within the operating range. If not, or if the seal is broken, weigh or otherwise determine that extinguisher is fully charged with foam. Recharge if pressure is low or foam is needed. Replace premixed agent every 3 years.

                  Inert gas
                  Recharge or replace if cylinder pressure loss exceeds 5 percent, adjusted for temperature. Test time delays, alarms, and ventilation shutdowns with carbon dioxide, nitrogen, or other nonflammable gas as stated in the system manufacturer's instruction manual. Inspect hoses and nozzles to ensure they are clear.

                  Water mist
                  Test and inspect system in accordance with the maintenance instructions in the system manufacturer's design, installation, operation, and maintenance manual.

              (b) Maintenance. In addition to the requirements in paragraph (a) of this section, all fire-suppression and detection equipment and systems on board a towing vessel must be maintained in accordance with the attached nameplate, manufacturer's approved design manual, or as otherwise provided in any TSMS applicable to the vessel.
              (c) Records. (1) The records of inspections and tests of fire-detection systems and fixed fire-extinguishing systems must be recorded in the TVR, official logbook, or in accordance with any TSMS applicable to the vessel. The following minimum information is required:

              (i) The dates when inspections and tests were performed, the number and any other identification of each unit inspected and tested, the results of the inspections and tests, and the name of the crewmember, surveyor or auditor and any others conducting the inspections and tests, must be included.
              (ii) Receipts and other records generated by these inspections and tests must be retained for at least 1 year and made available upon request.
              (2) The records of inspections and tests of portable fire extinguishers and semi-portable fire-extinguishing systems may be recorded in accordance with paragraph (c)(1) of this section, or on a tag attached to each unit by a qualified servicing organization.
              [USCG-2006-24412, 81 FR 40101, June 20, 2016, as amended by USCG-2017-1060, 83 FR 8181, Feb. 26, 2018]

              § 142.245
              Requirements for training crews to respond to fires.
              (a) Drills and instruction. The master of a towing vessel must ensure that each crewmember participates in fire-fighting drills and receives instruction at least once each month. The instruction may coincide with the drills, but is not required to do so. All crewmembers must be familiar with their fire-fighting duties, and, specifically how to:
              (1) Fight a fire in the engine room and elsewhere onboard the towing vessel, including how to:
              (i) Operate all of the fire-extinguishing equipment onboard the towing vessel;
              (ii) Stop any mechanical ventilation system for the engine room and effectively seal all natural openings to the space to prevent leakage of the extinguishing agent; and
              (iii) Operate the fuel shut-off(s) for the engine room.
              (2) Activate the general alarm;
              (3) Report inoperative alarm systems and fire-detection systems; and
              (4) Don a firefighter's outfit and a self-contained breathing apparatus, if the vessel is so equipped.
              (b) Alternative form of instruction. Video training, followed by a discussion led by someone familiar with the contingencies listed in paragraph (a) of this section, is an acceptable, alternative form of instruction. This instruction may occur either onboard or off the towing vessel.
              (c) Participation in drills. Drills must take place onboard the towing vessel as if there were an actual emergency. They must include:
              (1) Participation by all crewmembers;
              (2) Breaking out and using, or simulating the use of, emergency equipment;
              (3) Testing of all alarm and detection systems by operation of the test switch or by activation of one or more devices;
              (4) Putting on protective clothing by at least one person, if the towing vessel is so equipped; and
              (5) Functionally testing the self-priming capability of the portable fire pump, if the towing vessel is so equipped.
              (d) Safety orientation. The master must ensure that each crewmember who has not participated in the drills required by paragraph (a) of this section and received the instruction required by that paragraph (a) receives a safety orientation within 24 hours of reporting for duty. The safety orientation must cover the particular contingencies listed in paragraph (a) of this section.
              Note to § 142.245. See § 140.915 for requirements for keeping records of training.

            Subpart C—Fire Extinguishing and Detection Equipment Requirements

              § 142.300
              Excepted vessels.
              Excepted vessels, as defined in § 136.110 of this subchapter, need not comply with the provisions of §§ 142.315 through 142.330.

              § 142.315
              Additional fire-extinguishing equipment requirements.
              (a) A towing vessel that is:
              (1) Certificated for rivers, lakes, bays, and sounds, less than 3 nautical miles from shore on the Great Lakes; or

              (2) Certificated for limited coastwise, coastwise, oceans or waters beyond 3 nautical miles from shore on the Great Lakes, whose contract for construction was executed prior to August 27, 2003; or

              (3) Pushing a barge ahead or hauling a barge alongside, when the barge's coastwise, limited coastwise, or Great Lakes route is restricted, as indicated on its COI, so that the barge may operate “in fair weather only, within 12 miles of shore” or with words to that effect, must be equipped with either:
              (i) An approved 160-B semi-portable fire-extinguishing system to protect the engine room; or
              (ii) A fixed fire-extinguishing system installed to protect the engine room.
              (b) A towing vessel that is certificated for limited coastwise, coastwise, oceans, or beyond 3 nautical miles from shore on the Great Lakes whose contract for construction was executed on or after August 27, 2003, except for those specified in paragraph (a)(3) of this section, must be equipped with both:
              (1) An approved 160-B semi-portable fire-extinguishing system to protect the engine room; and
              (2) A fixed fire-extinguishing system installed to protect the engine room.
              [USCG-2006-24412, 81 FR 40101, June 20, 2016, as amended by USCG-2017-1060, 83 FR 8181, Feb. 26, 2018]

              § 142.325
              Fire pumps, fire mains, and fire hoses.
              Each towing vessel must have either a self-priming, power-driven, fixed fire pump, a fire main, and hoses and nozzles in accordance with paragraphs (a) through (d) of this section; or a portable pump, and hoses and nozzles, in accordance with paragraphs (e) and (f) of this section.
              (a) A fixed fire pump must be capable of:
              (1) Delivering water simultaneously from the two highest hydrants, or from both branches of the fitting if the highest hydrant has a Siamese fitting, at a pitot-tube pressure of at least 344 kilopascals (kPa) (50 pounds per square inch (psi)), and a flow rate of at least 300 liters per minute (lpm) (80 gallons per minute (gpm)); and
              (2) Being energized remotely from a safe place outside the engine room and at the pump.
              (b) All suction valves necessary for the operation of the fire main must be kept in the open position or capable of operation from the same place where the remote fire pump control is located.
              (c) The fire main must have a sufficient number of fire hydrants with attached hose to allow a stream of water to reach any part of the machinery space using a single length of fire hose.
              (d) The hose must be a lined commercial fire hose 15 meters (50 feet) in length, at least 40 millimeters (1.5 inches) in diameter, and fitted with a nozzle made of corrosion-resistant material capable of providing a solid stream and a spray pattern.
              (e) The portable fire pump must be self-priming and power-driven, with:
              (1) A minimum capacity of at least 300 LPM (80 gpm) at a discharge gauge pressure of not less than 414 kPa (60 psi), measured at the pump discharge;
              (2) A sufficient amount of lined commercial fire hose 15 meters (50 feet) in length, at least 40 mm (1.5 inches) in diameter and immediately available to attach to it so that a stream of water will reach any part of the vessel; and
              (3) A nozzle made of corrosion-resistant material capable of providing a solid stream and a spray pattern.
              (f) The pump must be stowed with its hose and nozzle outside of the machinery space.

              § 142.330
              Fire-detection system requirements.
              (a) Fire-detection systems. Except as provided in paragraph (a)(8) of this section, each towing vessel must have a fire-detection system installed to detect engine room fires. The owner or managing operator must ensure the following:
              (1) Each detector, control panel, remote indicator panel, and fire alarm are approved by the Commandant under approval series 161.002 or listed by a NRTL as set forth in 29 CFR 1910.7;
              (2) The system is installed, tested, and maintained in accordance with the manufacturer's design manual;

              (3) The system is arranged and installed so a fire in the engine room automatically sets off alarms on a fire detection control panel at the operating station. On vessels with more than one operating station, only one of them must be outfitted with a fire detection control panel. Any other operating station must be outfitted with either a fire detection control panel or a remote indicator panel;
              (4) The control panel includes:
              (i) A power available light;
              (ii) An audible to notify crew of a fire;
              (iii) Visual alarm alarms to identify the zone or zones of origin of the fire;
              (iv) A means to silence the audible alarm while maintaining indication by the visual alarms;
              (v) A circuit-fault detector test-switch, or internal supervision of circuit integrity; and
              (vi) Labels for all switches and indicator lights, identifying their functions.
              (5) The system draws power from two sources. Switchover from the primary source to the secondary source may be either manual or automatic;
              (6) The system serves no other purpose, unless it is an engine room monitoring system complying with paragraph (a)(8) of this section; and
              (7) The design of the system and its installation on the towing vessel is certified and inspected by a registered professional engineer with experience in fire-detection system design, by a technician with qualifications as a National Institute for Certification in Engineering Technologies (NICET) level IV fire alarm engineering technician, or by an authorized classification society with equivalent experience, to comply with paragraphs (a)(1) through (6) of this section.
              (8) A towing vessel whose construction was contracted for prior to January 18, 2000, may use an existing engine room monitoring system (with fire-detection capability) instead of a fire-detection system, if the monitoring system is operable and complies with paragraphs (a)(2) through (7) of this section, and uses detectors listed by an NRTL.
              (b) Smoke detection in berthing spaces. Each towing vessel must be equipped with a means to detect smoke in the berthing spaces and lounges that alerts individuals in those spaces. This may be accomplished by an installed detection system, or by using individual battery-operated detectors meeting UL 217 (incorporated by reference, see § 136.112 of this subchapter). Detection systems or individual detectors must be kept operational at all times when the crew is onboard the towing vessel.
              (c) Heat-detection system in galley. Each new towing vessel equipped with a galley must have a heat-detection system with one or more restorable heat-sensing detectors to detect fires in the galley. The system must be arranged to sound an audible alarm at each operating station. This may be a separate zone in the detection system required by paragraph (a) of this section, or a separate detection system complying with paragraphs (a)(1) and (2) of this section.

          Pt. 143
          PART 143—MACHINERY AND ELECTRICAL SYSTEMS AND EQUIPMENT

              Subpart A—General
              Sec.
              143.100
              Purpose.
              143.105
              Applicability.
              143.115
              Definitions.

              Subpart B—Requirements for All Towing Vessels
              143.200
              Applicability.
              143.205
              General.
              143.210
              Alternate design or operational considerations.
              143.215
              Existing vessels built to class.
              143.220
              Machinery space fire prevention.
              143.225
              Control and monitoring requirements.
              143.230
              Alarms and monitoring.
              143.235
              General alarms.
              143.240
              Communication requirements.
              143.245
              Readiness and testing.
              143.250
              System isolation and markings.
              143.255
              Fuel system requirements.
              143.260
              Fuel shutoff requirements.
              143.265
              Additional fuel system requirements for towing vessels built after January 18, 2000.
              143.270
              Piping systems and tanks.
              143.275
              Bilge pumps or other dewatering capability.
              143.300
              Pressure vessels.
              143.400
              Electrical systems, general.
              143.410
              Shipboard lighting.
              143.415
              Navigation lights.
              143.450
              Pilothouse alerter system.
              143.460
              Towing machinery.

              Subpart C—Requirements for New Towing Vessels
              143.500
              Applicability.
              143.510
              Verification of compliance with design standards.
              143.515
              Towing vessels built to recognized classification society rules.
              143.520
              Towing vessels built to American Boat and Yacht Council standards.
              143.540
              Pumps, pipes, valves, and fittings for essential systems.
              143.545
              Pressure vessels.
              143.550
              Steering systems.
              143.555
              Electrical power sources, generators, and motors.
              143.560
              Electrical distribution panels and switchboards.
              143.565
              Electrical overcurrent protection other than generators and motors.
              143.570
              Electrical grounding and ground detection.
              143.575
              Electrical conductors, connections, and equipment.
              143.580
              Alternative electrical installations.
              143.585
              General requirements for propulsion, steering, and related controls on vessels that move tank barges carrying oil or hazardous material in bulk.
              143.590
              Propulsor redundancy on vessels that move tank barges carrying oil or hazardous material in bulk.
              143.595
              Vessels with one propulsor that move tank barges carrying oil or hazardous material in bulk.
              143.600
              Alternative standards for vessels that move tank barges carrying oil or hazardous material in bulk.
              143.605
              Demonstration of compliance on vessels that move tank barges carrying oil or hazardous material in bulk.

            Authority:
            46 U.S.C. 3103, 3301, 3306, 3308, 3316, 8104, 8904; 33 CFR 1.05; DHS Delegation No. 0170.1.

            Source:
            USCG-2006-24412, 81 FR 40101, June 20, 2016, unless otherwise noted.

            Subpart A—General

              § 143.100
              Purpose.
              This part contains requirements for the design, installation, and operation of primary and auxiliary machinery and electrical systems and equipment on towing vessels.

              § 143.105
              Applicability.
              This part applies to all towing vessels subject to this subchapter. The specific applicability of requirements in each subpart is set forth in that subpart.

              § 143.115
              Definitions.
              The definitions provided in § 136.110 of this subchapter apply to this part. In addition, the following definition applies exclusively to this part:

                Independent means the equipment is arranged to perform its required function regardless of the state of operation, or failure, of other equipment.

            Subpart B—Requirements for All Towing Vessels

              § 143.200
              Applicability.
              (a) This subpart applies to all towing vessels subject to this subchapter.
              (b) Except as noted paragraph (c) of this section, which lists later implementation dates for requirements in §§ 143.450 and 143.460, an existing towing vessel must comply with the applicable requirements in this part no later than either July 20, 2018 or the date the vessel obtains a Certificate of Inspection (COI), whichever date is earlier. The delayed implementation provisions in this section do not apply to a new towing vessel.
              (c) Existing vessels must meet the pilothouse alerter and towing machinery requirements of §§ 143.450 and 143.460 no later than 5 years after the issuance of the first COI for the vessel.

              § 143.205
              General.
              (a) Machinery and electrical systems must be designed and maintained to provide for safe operation of the towing vessel and safety of persons onboard under normal and emergency conditions.
              (b) The crew of each towing vessel must demonstrate the ability to operate the primary and auxiliary machinery and electrical systems for which they are responsible, and to do so under normal and emergency conditions. This includes, but is not limited to, responses to alarms and restoration of propulsion and steering in the event of failure.
              (c) Propulsion machinery, including main engines, reduction gears, shafting, bearings, and electrical equipment and systems, must:
              (1) Be maintained to ensure proper operation;

              (2) Be suitable for route and service; and
              (3) Have suitable propulsion controls to provide the operator full control at each operating station.
              (d) Repairs and minor alterations to existing towing vessels must be made in accordance with this part. New installations that are not replacements in kind must comply with the requirements of subpart C of this part, if applicable.

              § 143.210
              Alternate design or operational considerations.
              (a) Machinery or electrical systems of a novel design, unusual form, or special material that cannot be reviewed or approved in accordance with this part, may be approved by the Commanding Officer, Marine Safety Center. It must be shown by systematic analysis, based on engineering principles, that the machinery or electrical equipment or system provides an equivalent level of safety. The owner or managing operator must submit detailed plans, material component specifications, and design criteria, including the expected towing vessel service and operating environment, to the Marine Safety Center. Examples of novel design include use of liquefied natural gas, compressed natural gas, or propane fuel for propulsion, and hybrid, fuel cell, or battery propulsion.
              (b) Alternate arrangements or equipment to comply with this part may be approved in accordance with § 136.115 of this subchapter.

              § 143.215
              Existing vessels built to class.
              (a) An existing towing vessel classed by a recognized classification society, as appropriate for the intended service and routes, is considered in compliance with the machinery and electrical standards of this subpart.
              (b) An existing vessel built and equipped to conform to a recognized classification society's rules, appropriate for the intended service and routes, but not currently classed, may be deemed by the Officer in Charge, Marine Inspection (OCMI), or third-party organization (TPO), to be in compliance with this part, provided that the towing vessel conforms to the class rules.
              (c) Existing vessels meeting either paragraph (a) or (b) of this section must also meet the requirements of §§ 143.245 and 143.450.

              § 143.220
              Machinery space fire prevention.
              (a) All seals and gaskets must be properly maintained to prevent leaks of flammable or combustible liquid, as those terms are defined in 46 CFR subpart 30.10, into the machinery space.
              (b) Piping and machinery components that exceed 220 °C (428 °F), including fittings, flanges, valves, exhaust manifolds, and turbochargers, must be insulated. Measures must be in place to prevent flammable or combustible liquid piping leaks from coming into contact with these components.
              (c) Flammable and combustible products must not be stored in machinery spaces, unless they are stored in a suitable container that meets the requirements of § 142.225 of this subchapter.

              § 143.225
              Control and monitoring requirements.
              (a) Each towing vessel must have a means to monitor and control the amount of thrust, rudder angle, and (if applicable) direction of thrust, at each operating station.
              (b) Each towing vessel equipped with rudder(s) must have a means to monitor and control the position of the rudder(s) at each operating station.

              § 143.230
              Alarms and monitoring.
              (a) Each towing vessel must have a reliable means to provide notification when an emergency condition exists or an essential system develops problems that require attention. The following alarms must be provided:
              (1) Main engine low lubricating oil pressure;
              (2) Main engine high cooling water temperature;
              (3) Auxiliary generator engine low lubricating oil pressure;
              (4) Auxiliary generator engine high cooling water temperature;
              (5) High bilge levels;
              (6) Low hydraulic steering fluid levels, if applicable; and
              (7) Low fuel level, if fitted with a day tank.
              (b) Alarms must:

              (1) Be visible and audible at each operating station. The alarm located at the operating station may be a summary alarm; if the alarm at the operating station is a summary alarm, the specific alarm condition must be indicated at the machinery or bilge location;
              (2) Have a means to test actuation at each operating station or have a continuous self-monitoring alarm system which actuates if an alarm point fails or becomes disabled;
              (3) Continue until they are acknowledged; and
              (4) Not interfere with night vision at the operating station.
              (c) The following systems must be equipped with gauges at the machinery location:
              (1) Main engine lubricating oil pressure and main engine RPM;
              (2) Main engine cooling water temperature;
              (3) Auxiliary generator engine lubricating oil pressure and auxiliary generator engine RPM;
              (4) Auxiliary generator engine cooling water temperature; and
              (5) Hydraulic steering fluid pressure, if the vessel is equipped with hydraulic steering systems.

              § 143.235
              General alarms.
              (a) This section does not apply to an excepted vessel as defined in § 136.110 of this subchapter.
              (b) Each towing vessel must be fitted with a general alarm that:
              (1) Is activated at each operating station and can notify persons onboard in the event of an emergency;
              (2) Is capable of notifying persons in any accommodation, work space, and the engine room;
              (3) Has installed, in the engine room and any other area where background noise makes a general alarm hard to hear, a supplemental flashing red light that is identified with a sign that reads: “Attention General Alarm—When Alarm Sounds or Flashes Go to Your Station”; and
              (4) A public-address (PA) system or other means of alerting all persons on the towing vessel may be used in lieu of the general alarm in paragraph (b) of this section if the system meets the requirements of paragrahs (b)(2) and (3) of this section.

              § 143.240
              Communication requirements.
              (a) This section does not apply to an excepted towing vessel as defined in § 136.110 of this subchapter.
              (b) Each towing vessel must be fitted with a communication system between the pilothouse and the engine room that:
              (1) Consists of either fixed or portable equipment, such as a sound-powered telephone, portable radios, or other reliable method of voice communication, with a main or reserve power supply that is independent of the towing vessel's electrical system; and
              (2) Provides two-way voice communication and calling between the pilothouse and either the engine room or a location immediately adjacent to an exit from the engine room.
              (c) Towing vessels with more than one propulsion unit and independent pilothouse control for all engines are not required to have internal communication systems.
              (d) When the pilothouse engine controls and the access to the engine room are within 3 meters (10 feet) of each other and allow unobstructed visible contact between them, direct voice communication is acceptable instead of a communication system.

              § 143.245
              Readiness and testing.
              (a) Essential systems or equipment must be regularly tested and examined. Tests and examinations must verify that the system or equipment functions as designed. If a component is found unsatisfactory, it must be repaired or replaced. Test and examination procedures must be in accordance with manufacturer's instructions or the Towing Safety Management System (TSMS) applicable to the vessel, if the vessel has a TSMS.

              (b) Each towing vessel must perform the applicable tests in Table 143.245(b) of this section. The tests required by this section must be recorded in accordance with part 140 of this subchapter.

                Table 143.245(b)—Required Tests and Frequency

                  Tests of:
                  Frequency:

                  Propulsion controls; ahead and astern at the operating station
                  Before the vessel gets underway, but no more than once in any 24 hour period.

                  Steering controls at the operating station
                  Before the vessel gets underway, but no more than once in any 24 hour period.

                  Pilothouse alerter system
                  Weekly.

                  All alternate steering and propulsion controls
                  At least once every 3 months.

                  Power supply for alarm actuation circuits for alarms required by § 143.230
                  At least once every 3 months.

                  Communications required by § 143.240
                  Weekly.

                  General alarm if the vessel is so equipped
                  Weekly.

                  Emergency lighting and power if the vessel is so equipped
                  At least once every 3 months.

                  Charge of storage batteries if the vessel is so equipped, for emergency lighting and power
                  At least once every 3 months.

                  Alarm setpoints
                  Twice every 5 years, with no more than 3 years elapsing since last test.

                  Pressure vessel relief valves
                  Twice every 5 years, with no more than 3 years elapsing since last test.

                  All other essential systems
                  At least once every 3 months.

              § 143.250
              System isolation and markings.
              Electrical equipment, piping for flammable or combustible liquid, seawater cooling, or fire-fighting systems must be provided with isolation devices and markings as follows:
              (a) Electrical equipment must be provided with circuit isolation and must be marked as described in § 143.400.
              (b) Electrical panels or other enclosures containing more than one source of power must be fitted with a sign warning persons of this condition and identifying where to secure all sources.
              (c) Piping for flammable or combustible liquid, seawater cooling, or firefighting systems must be fitted with isolation valves that are clearly marked by labeling or color coding that enables the crew to identify its function.
              (d) Any piping system that penetrates the hull below the waterline must be fitted with an accessible valve, located as close to the hull penetration as is practicable, for preventing the accidental admission of water into the vessel either through such pipes or in the event of a fracture of such pipe. The valve must be clearly marked by labeling or color coding that enables the crew to identify its function.
              (e) Color coding required by this section may be met by complying with coding standards contained in the ISO 14726:2008(E) (incorporated by reference, see § 136.112 of this subchapter), or in accordance with the TSMS applicable to the vessel.

              § 143.255
              Fuel system requirements.
              (a) Fuel systems for towing vessel main engines and generators must have a documented maintenance plan to ensure proper operation of the system.
              (b) A continuous supply of clean fuel must be provided to main propulsion engines and generators.
              (c) The fuel system must include filters and/or purifiers. Where filters are used:
              (1) A supply of spare fuel filters must be provided onboard; and
              (2) Fuel filters must be replaced in accordance with manufacturer's requirements or the vessel's TSMS, if applicable.
              (d) Except as otherwise permitted under § 143.210 or § 143.520, no fuel other than diesel fuel may be used.

              § 143.260
              Fuel shutoff requirements.
              (a) This section does not apply to an excepted towing vessel as defined in § 136.110 of this subchapter.
              (b) To stop the flow of fuel in the event of a fire or break in the fuel line, a remote fuel shutoff valve must be fitted on any fuel line that supplies fuel directly to a propulsion engine or generator prime mover.
              (c) The valve must be installed in the fuel piping directly outside of the fuel oil supply tank.
              (d) The valve must be operable from a safe place outside the space where the valve is installed.
              (e) Each remote valve control must be marked in clearly legible letters, at least 25 millimeters (1 inch) high, indicating the purpose of the valve and the way to operate it.

              § 143.265
              Additional fuel system requirements for towing vessels built after January 18, 2000.
              (a) Applicability. This section applies to towing vessels that are not excepted vessels, as defined in § 136.110 of this subchapter, and that were built after January 18, 2000. Except for outboard engines or portable bilge or fire pumps, each fuel system must comply with this section.
              (b) Portable fuel systems. The vessel must not incorporate or carry portable fuel systems, including portable tanks and related fuel lines and accessories, except when used for outboard engines or portable bilge or fire pumps. The design, construction, and stowage of portable tanks and related fuel lines and accessories must comply with the ABYC H-25 (incorporated by reference, see § 136.112 of this subchapter).
              (c) Vent pipes for integral fuel tanks. Each integral fuel tank must have a vent that connects to the highest point of the tank, discharges on a weather deck through a bend of 180 degrees, and is fitted with a 30-by-30-mesh corrosion-resistant flame screen. Vents from two or more fuel tanks may combine in a system that discharges on a weather deck. The net cross-sectional area of the vent pipe for the tank must be not less than 312.3 square millimeters (0.484 square inches), for any tank filled by gravity. The cross-sectional area of the vent pipe, or the sum of the vent areas when multiple vents are used, must not be less than that of the fill pipe cross-sectional area for any tank filled by pump pressure.
              (d) Fuel piping. Except as permitted in paragraphs (d)(1) through (3) of this section, each fuel line must be seamless and made of steel, annealed copper, nickel-copper, or copper-nickel. Each fuel line must have a wall thickness no less than 0.9 millimeters (0.035 inches) except for the following:
              (1) Aluminum piping is acceptable on an aluminum-hull towing vessel if it is at least Schedule 80 in thickness.
              (2) Nonmetallic flexible hose is acceptable if it:
              (i) Is used in lengths of not more than 0.76 meters (30 inches);
              (ii) Is visible and easily accessible;
              (iii) Does not penetrate a watertight bulkhead;
              (iv) Is fabricated with an inner tube and a cover of synthetic rubber or other suitable material reinforced with wire braid; and
              (v) Either:
              (A) If designed for use with compression fittings, is fitted with suitable, corrosion-resistant, compression fittings, or fittings compliant with the SAE J1475 Revised JUN96 (incorporated by reference, see § 136.112 of this subchapter); or
              (B) If designed for use with clamps, is installed with two clamps at each end of the hose. Clamps must not rely on spring tension and must be installed beyond the bead or flare or over the serrations of the mating spud, pipe, or hose fitting.
              (3) Nonmetallic flexible hose complying with SAE J1942 Revised APR2007 (incorporated by reference, see § 136.112 of this subchapter), is also acceptable.
              (e) Alternative standards. A towing vessel of less than 79 feet in length may comply with any of the following standards for fuel systems instead of those of paragraph (d) in this section:
              (1) ABYC H-33 (incorporated by reference, see § 136.112 of this subchapter);
              (2) Chapter 5 of NFPA 302 (incorporated by reference, see § 136.112 of this subchapter); or
              (3) 33 CFR chapter I, subchapter S (Boating Safety).

              § 143.270
              Piping systems and tanks.
              Piping and tanks exposed to the outside of the hull must be made of metal and maintained in a leak free condition.

              § 143.275
              Bilge pumps or other dewatering capability.
              There must be an installed or portable bilge pump for emergency dewatering. Any portable pump must have sufficient hose length and pumping capability. All installed bilge piping must have a check/foot valve in each bilge suction that prevents unintended backflooding through bilge piping.

              § 143.300
              Pressure vessels.

              (a) Pressure vessels over 5 cubic feet in volume and over 15 pounds per square inch maximum allowable working pressure (MAWP) must be equipped with an indicating pressure gauge (in a readily visible location) and with one or more spring-loaded relief valves. The total relieving capacity of such relief valves must prevent pressure from exceeding the MAWP, as established by the manufacturer, by more than 10 percent.
              (b) Pressure vessels must be externally examined annually. Relief valves must be tested in accordance with § 143.245.
              (c) All pressure vessels must have the MAWP indicated by a stamp, nameplate, or other means visible to the crew.
              (d) Pressure vessels installed after July 20, 2018, or the date the vessel obtains a Certificate of Inspection (COI), whichever date is earlier, must meet the requirements of § 143.545.
              [USCG-2006-24412, 81 FR 40101, June 20, 2016; 81 FR 47312, July 21, 2016]

              § 143.400
              Electrical systems, general.
              (a) Electrical systems and equipment must function properly and minimize system failures and fire and shock hazards.
              (b) Installed electrical power source(s) must be capable of carrying the electrical load of the towing vessel under normal operating conditions.
              (c) Electrical equipment must be marked with its respective current and voltage ratings.
              (d) Individual circuit breakers on switchboards and distribution panels must be labeled with a description of the loads they serve.
              (e) Electrical connections must be suitably installed to prevent them from coming loose through vibration or accidental contact.
              (f) Electrical equipment and electrical cables must be suitably protected from wet and corrosive environments.
              (g) Electrical components that pose an electrical hazard must be in an enclosure.
              (h) Electrical conductors passing though watertight bulkheads must be installed so that the bulkhead remains watertight.
              (i) The connections of flexible cable plugs and socket outlets must be designed to prevent unintended separation.

              § 143.410
              Shipboard lighting.
              (a) Sufficient lighting suitable for the marine environment must be provided within crew working and living areas.
              (b) Emergency lighting must be provided for all internal crew working and living areas. Emergency lighting sources must provide for sufficient illumination under emergency conditions to facilitate egress from each space and must be either:
              (1) Automatic, battery-operated with a duration of no less than 2 hours; or
              (2) Non-electric, phosphorescent adhesive lighting strips that are installed along escape routes and sufficiently visible to enable egress with no power.
              (c) Each towing vessel must be equipped with at least two portable, battery-powered lights. One must be located in the pilothouse and the other at the access to the engine room.

              § 143.415
              Navigation lights.
              (a) Towing vessels more than 65 feet in length must use navigation lights that meet UL 1104 (incorporated by reference, see § 136.112 of this subchapter) or other standards accepted by the Coast Guard.
              (b) Towing vessels 65 feet or less in length may meet the requirements listed in 33 CFR 183.810 or paragraph (a) of this section.

              § 143.450
              Pilothouse alerter system.
              (a) Except as provided in paragraph (d) or (e) of this section, a towing vessel with overnight accommodations and alternating watches (shift work), when pulling, pushing or hauling alongside one or more barges, must have a system to detect when its master or mate (pilot) becomes incapacitated. The system must:
              (1) Have an alarm in the pilothouse distinct from any other alarm;
              (2) Require action from the master or officer in charge of a navigational watch, during an interval not to exceed 10 minutes, in order to reset the alarm timer; and
              (3) Immediately (within 30 seconds) notify another crewmember if the pilothouse alarm is not acknowledged.

              (b) The time interval for the system alarm must be adjustable. The time may be adjusted by the owner or managing operator but must not be in excess of 10 minutes. This time interval, and information on alerter operation, must be provided on board and specified in the vessel's TSMS if applicable.
              (c) The system alarm may be reset physically (e.g. a push button), or the reset may be accomplished by a link to other pilothouse action such as rudder or throttle control movement, or motion detection of personnel.
              (d) A towing vessel need not comply with this section if a second person is provided in the pilothouse.
              (e) Towing vessels 65 feet or less in length are not required to have a pilothouse alerter system.

              § 143.460
              Towing machinery.
              (a) Towing machinery such as capstans, winches, and other mechanical devices used to connect the towing vessel to the tow must be designed and installed to maximize control of the tow.

              (b) Towing machinery for towing astern must have sufficient safeguards, e.g., towing bitt with crossbar, to prevent the machinery from becoming disabled in the event the tow becomes out of line.
              (c) Towing machinery used to connect the towing vessel to the tow must be suitable for its intended service. It must be capable of withstanding exposure to the marine environment, likely mechanical damage, static and dynamic loads expected during intended service, the towing vessel's horsepower, and arrangement of the tow.
              (d) When a winch that has the potential for uncontrolled release under tension is used, a warning must be in place at the winch controls that indicates this. When safeguards designed to prevent uncontrolled release are utilized, they must not be disabled.
              (e) Each owner or managing operator must develop procedures to routinely examine, maintain, and replace capstans, winches, and other machinery used to connect the towing vessel to the tow.

            Subpart C—Requirements for New Towing Vessels

              § 143.500
              Applicability.
              (a) This subpart applies to a new towing vessel, as defined in § 136.110 of this subchapter, unless it is an excepted vessel.
              (b) Machinery or electrical systems of a novel design, unusual form, or special material must meet section § 143.210.
              (c) Unless otherwise noted in §§ 143.515 and 143.520, new towing vessels must also meet the requirements of subpart B of this part.

              § 143.510
              Verification of compliance with design standards.
              Verification of compliance with the machinery and electrical design standards in this subpart is obtained by following the provisions in §§ 144.135 through 144.145 of this subchapter.

              § 143.515
              Towing vessels built to recognized classification society rules.
              (a) Except as noted in paragraph (c) of this section, a towing vessel classed by the American Bureau of Shipping (ABS), in accordance with the ABS Rules for Building and Classing Steel Vessels Under 90 Meters (295 Feet) in Length, or the ABS Rules for Building and Classing Steel Vessels for Service on Rivers and Intracoastal Waterways (incorporated by reference, see § 136.112 of this subchapter), as appropriate for the intended service and routes, complies with this subpart.
              (b) Except as noted in paragraph (c) of this section, a towing vessel built and equipped to conform to the ABS rules specified in paragraph (a) of this section and appropriate for the intended service and routes, but not currently classed, may be deemed by the OCMI or a TPO to be in compliance with this subpart if it can be shown that the vessel continues to conform to the ABS rules.
              (c) A vessel that complies with this subpart as described in paragraph (a) or (b) must also meet the requirements described in §§ 143.585 through 143.595 or the requirements of § 143.600 if it moves tank barges carrying oil or hazardous material in bulk.

              (d) Vessels meeting either paragraph (a) or (b) of this section are considered as being in compliance with subpart B of this part except for the readiness and testing requirements of § 143.245, and pilothouse alerter requirements of § 143.450.

              (e) Towing vessels built to other recognized classification society rules, appropriate for the intended route and service, may be considered compliant with provisions in this subpart upon approval by the Coast Guard.

              § 143.520
              Towing vessels built to American Boat and Yacht Council standards.
              (a) Except as noted in paragraphs (b) and (c) of this section, a new towing vessel 65 feet (19.8 meters) or less in length built to conform with the American Boat and Yacht Council (ABYC) standards listed in this paragraph (a) (incorporated by reference, see § 136.112 of this subchapter), complies with this subpart:
              (1) E-11 (2003)—AC & DC Electrical Systems on Boats;
              (2) H-2 (2002)—Ventilation of Boats Using Gasoline;
              (2) H-22 (2005)—Electric Bilge Pump Systems;
              (3) H-24 (2007)—Gasoline Fuel Systems;
              (4) H-25 (2003)—Portable Gasoline Fuel Systems;
              (5) H-32 (2004)—Ventilation of Boats Using Diesel Fuel;
              (6) H-33 (2005)—Diesel Fuel Systems;
              (7) P-1 (2002)—Installation of Exhaust Systems for Propulsion and Auxiliary Engines; and
              (8) P-4 (2004)—Marine Inboard Engines and Transmissions.
              (b) New towing vessels, 65 feet or less in length, built to the ABYC standards specified in this section are considered compliant with subpart B of this part except for the readiness and testing requirements of § 143.245.
              (c) If the vessel moves tank barges carrying oil or hazardous material in bulk, it must meet either the requirements described in §§ 143.585 through 143.595 or the requirements described in § 143.600.

              § 143.540
              Pumps, pipes, valves, and fittings for essential systems.
              (a) Pumps, pipes, valves, and fittings in essential systems on vessels must meet ABS Rules for Building and Classing Steel Vessels Under 90 Meters (295 Feet) in Length (incorporated by reference, see § 136.112 of this subchapter), Part 4, Chapter 4.
              (b) Pumps, pipes, valves, and fittings in essential systems on towing vessels operating exclusively on rivers or intracoastal waterways may meet ABS Rules for Building and Classing Steel Vessels for Service on Rivers and Intracoastal Waterways (incorporated by reference, see § 136.112 of this subchapter), Part 4, Chapter 3.

              § 143.545
              Pressure vessels.
              (a) In lieu of meeting the requirements of § 143.300, pressure vessels installed on new towing vessels must meet the requirements of this section.
              (b) Pressure vessels over 5 cubic feet in volume and more than 15 psi maximum allowable working pressure must meet ABS Rules for Building and Classing Steel Vessels under 90 Meters (295 Feet) in Length (incorporated by reference, see § 136.112 of this subchapter), Part 4, Chapter 1, Section 1.

              § 143.550
              Steering systems.
              (a) Steering systems must meet ABS Rules for Building and Classing Steel Vessels under 90 Meters (295 Feet) in Length (incorporated by reference, see § 136.112 of this subchapter), Part 4, Chapter 3, Section 3.
              (b) Steering systems on new towing vessels operating exclusively on rivers or intracoastal waterways may meet ABS Rules for Building and Classing Steel Vessels for Service on Rivers and Intracoastal Waterways (incorporated by reference, see § 136.112 of this subchapter), Part 4, Chapter 2, Section 3.

              § 143.555
              Electrical power sources, generators, and motors.
              (a) General requirements. (1) There must be a source of electrical power sufficient for:
              (i) All essential systems as defined by § 136.110 of this subchapter;
              (ii) Minimum conditions of habitability; and
              (iii) Other installed or portable systems and equipment.
              (2) Generators and motors must be suitably rated for the environment where they operate, marked with their respective ratings, and suitably protected against overcurrent.

              (3) A towing vessel, other than an excepted vessel, must have a backup or a second power source that has adequate capacity to supply power to essential alarms, lighting, radios, navigation equipment, and any other essential system identified by the cognizant OCMI or a TPO.
              (b) Specific requirements. (1) The owner or managing operator must complete a load analysis that shows that the electrical power source is sufficient to power the sum of connected loads described in paragraph (a)(1) of this section utilizing an appropriate load factor for each load. A record of the analysis must be retained by the owner or managing operator.
              (2) Installed generators and motors must have a data plate listing rated kilowatts and power factor (or current), voltage, and rated ambient temperature.
              (3) Generators must be provided with overcurrent protection no greater than 115 percent of their rated current and utilize a switchboard or distribution panel.
              (4) Motors must be provided with overcurrent protection that meets Parts I through VII, Article 430 of NFPA's National Electrical Code (NEC) (incorporated by reference, see § 136.112 of this subchapter). Steering motor circuits must be protected as per Part 4 Chapter 6 Section 2, Regulation 11 (except 11.7) ofABS Rules for Building and Classing Steel Vessels Under 90 Meters (295 feet) in Length (incorporated by reference, see § 136.112 of this subchapter).
              (5) Generators and motors installed in machinery spaces must be certified to operate in an ambient temperature of 50 °C or be derated, or it can be shown that 40 °C ambient temperature will not be exceeded in these spaces.
              (6) Each generator and motor, except a submersible-pump motor, must be in an accessible space which is adequately ventilated and as dry as practicable, and must be mounted above the bilges.
              (7) A generator driven by a main propulsion unit (such as a shaft generator) may be considered one of the power sources required by paragraph (a) of this section.
              (8) Other than excepted vessels, each towing vessel must be arranged so that the following essential loads can be energized from two independent sources of electricity:
              (i) High bilge level alarm required by § 143.230;
              (ii) Emergency egress lighting, unless the requirements of § 143.410(b)(1) or (2) are met;
              (iii) Navigation lights;
              (iv) Pilothouse lighting;
              (v) Engine room lighting;
              (vi) Any installed radios and navigation equipment as required by §§ 140.715 and 140.725;
              (vii) All distress alerting communications equipment listed in §§ 140.715 and 140.725;
              (viii) Any installed fire detection system; and
              (ix) Any essential system identified by the cognizant OCMI or TPO, if applicable.
              (9) If a battery is used as the second source of electricity required by paragraph (b)(8) of this section, it must be capable of supplying the loads for at least three hours. There must be a means to monitor the condition of the battery backup power source.

              § 143.560
              Electrical distribution panels and switchboards.
              (a) Each distribution panel or switchboard on a towing vessel must be:
              (1) In a location that is accessible, as dry as practicable, adequately ventilated, and protected from falling debris and dripping or splashing water; and
              (2) Totally enclosed and of the dead-front type.
              (b) Each switchboard accessible from the rear must be constructed to prevent a person's accidental contact with energized parts.
              (c) Nonconductive mats or grating must be provided on the deck in front of each switchboard and, if it is accessible from the rear, on the deck behind the switchboard.
              (d) Each un-insulated current-carrying part must be mounted on noncombustible, nonabsorbent, and high-dielectric insulating material.
              (e) Equipment mounted on a door of an enclosure must be constructed or shielded so that a person will not come into accidental contact with energized parts.

              § 143.565
              Electrical overcurrent protection other than generators and motors.
              (a) General requirement. Power and lighting circuits on towing vessels must be protected by suitable overcurrent protection.
              (b) Specific requirements. (1) Cable and wiring used in power and lighting circuits must have overcurrent protection that opens the circuit at the standard setting closest to 80 percent of the manufacturer's listed ampacity. Overcurrent protection setting exceptions allowed by NFPA's National Electrical Code (NEC), Article 240 (incorporated by reference, see § 136.112 of this subchapter) may be employed.
              (2) If the manufacturer's listed ampacity is not known, tables referenced in Article 310.15(B) of the NEC (incorporated by reference, see § 136.112 of this subchapter) must be used, assuming a temperature rating of 75 °C and an assumed temperature of 50 °C for machinery spaces and 40 °C for other spaces.
              (3) Overcurrent protection devices must be installed in a manner that will not open the path to ground in a circuit; only ungrounded conductors must be protected. Overcurrent protection must be coordinated such that an overcurrent situation is cleared by the circuit breaker or fuse nearest to the fault.
              (4) Each transformer must have protection against overcurrent that meets Article 450 of the NEC (incorporated by reference, see § 136.112 of this subchapter).
              (5) On a towing vessel, other than an excepted vessel as defined in § 136.110 of this subchapter, essential systems and non-essential systems must not be on the same circuit or share the same overcurrent protective device.

              § 143.570
              Electrical grounding and ground detection.
              (a) An ungrounded distribution system must be provided with a ground detection system located at the main switchboard or distribution panel that provides continuous indication of circuit status to ground, with a provision to temporarily remove the indicating device from the reference ground.
              (b) A dual voltage or grounded electrical distribution system must have the neutral suitably grounded. There must be only one connection to ground, regardless of the number of power sources. This connection must be at the main switchboard or distribution panel.
              (c) On a metallic towing vessel, a grounded distribution system must be grounded to the hull. This grounded system must be connected to a common, non-aluminum ground plate. The ground plate must have only one connection to the main switchboard or distribution panel, and the connection must be readily accessible for examination.
              (d) On a nonmetallic towing vessel, all electrical equipment must be grounded to a common ground. Multiple ground plates bonded together are acceptable.
              (e) Each grounding conductor of a cable must be identified by one of the following means:
              (1) Green braid or green insulation; or
              (2) Stripping the insulation from the entire exposed length of the grounding conductor.
              (f) A towing vessel's hull may not carry current as a conductor, except for an impressed-current cathodic-protection system or a battery system used to start an engine.
              (g) Cable armor may not be used to ground electrical equipment or systems.
              (h) Each receptacle outlet and attachment plug for a portable lamp, tool, or similar apparatus operating at 100 or more volts must have a grounding pole and a grounding conductor in the portable cord.
              (i) In a grounded distribution system, only grounded, three-prong appliances may be used. This does not apply to double-insulated appliances or tools and appliances of 50 volts or less.

              § 143.575
              Electrical conductors, connections, and equipment.
              (a) Each cable and wire on a towing vessel must be installed to meet the following requirements:

              (1) Each conductor must have sufficient current-carrying capacity for the circuit in which it is used.

              (2) Cable hangers for overhead and vertical cable runs must be installed with metal supports and retention devices at least every 48 inches.

              (3) Each wire and cable run must be installed in a manner to prevent contact with personnel, mechanical hazards, and leaking fluids. Wire and cable runs must not be installed in bilges, across a normal walking path, or less than 24 inches from the path of movable machinery (e.g., cranes, elevators, forktrucks, etc., where the machinery location can change) unless adequately protected.
              (4) Connections and terminations must be suitable for the installed conductors, and must retain the original electrical, mechanical, flame-retarding, and where necessary, fire-resisting properties of the conductor. If twist-on types of connectors are used, the connections must be made within an enclosure and the insulated cap of the connector must be secured to prevent loosening due to vibration. Twist-on type of connectors may not be used for making joints in cables, facilitating a conductor splice, or extending the length of a circuit.
              (5) Each cable and wire must be installed so as to avoid or reduce interference with radio reception and compass indication.
              (6) Each cable and wire must be protected from the weather.
              (7) Each cable and wire must be supported in order to avoid chafing or other damage.
              (8) Each cable and wire must be protected by metal coverings or other suitable means, if in areas subject to mechanical abuse.
              (9) Each cable and wire must be suitable for low temperature and high humidity, if installed in refrigerated compartments.
              (10) Each cable and wire must be located outside a tank, unless it supplies power to equipment in the tank.
              (11) If wire is installed in a tank, it must have sheathing or wire insulation compatible with the fluid in a tank.
              (b) Extension cords must not be used as a permanent connection to a source of electrical power.
              (c) Multi-outlet adapters (power strips) may not be connected to other adapters (“daisy-chained”), or otherwise used in a manner that could overload the capacity of a receptacle.

              § 143.580
              Alternative electrical installations.
              In lieu of meeting the requirements of §§ 143.555 through 143.575, a vessel may meet the following:
              (a) ABS Rules for Building and Classing Steel Vessels Under 90 Meters (295 Feet) in Length (incorporated by reference, see § 136.112 of this subchapter), Part 4, Chapter 6; or
              (b) ABS Rules for Building and Classing Steel Vessels for Service on Rivers and Intracoastal Waterways (incorporated by reference, see § 136.112 of this subchapter), Part 4, Chapter 5, if they operate exclusively on rivers or intracoastal waterways.

              § 143.585
              General requirements for propulsion, steering, and related controls on vessels that move tank barges carrying oil or hazardous material in bulk.
              (a) There must be an alternate means to control the propulsion and steering system which must:
              (1) Be independent of the primary control required by § 143.225;
              (2) Be located at or near the propulsion and steering equipment; and
              (3) Be readily accessible and suitable for prolonged operation.
              (b) There must be a means to communicate between each operating station and the alternate propulsion and steering controls.
              (c) There must be a means to stop each propulsion engine and steering motor from each operating station.
              (d) The means to monitor the amount of thrust, rudder angle, and if applicable, direction (ahead or astern) of thrust must be independent of the controls required by § 143.225.
              (e) The propulsion control system required by § 143.225 must be designed so that, in the event of a single failure of any component of the system, propeller speed and direction of thrust are maintained or reduced to zero.

              (f) On a towing vessel with an integrated steering and propulsion system, such as a Z-drive, the control system required by § 143.225 must be designed so that, in the event of a single failure of any component of the system, propeller speed and direction of thrust are maintained or the propeller speed is reduced to zero.
              (g) An audible and visual alarm must actuate at each operating station when:
              (1) The propulsion control system fails;
              (2) A non-follow up steering control system fails, if installed; and
              (3) The ordered rudder angle does not match the actual rudder position on a follow-up steering control system, if installed. This alarm must have an appropriate delay and error tolerance to eliminate nuisance alarms.
              (h) Alarms must be separate and independent of the control system required by § 143.225.
              (i) A means of communication must be provided between each operating station and any crewmember(s) required to respond to alarms.
              (j) The two sources of electricity required by § 143.555(a)(3) and (b)(8) must be capable of powering electrical loads needed to maintain propulsion, steering, and related controls for not less than 3 hours.
              (k) The second source of supply required by § 143.555(a)(3) must automatically start to help restore or maintain power to propulsion, steering, and related controls when the main power source fails.
              (l) Propulsion, steering, or related controls that are directly reliant on stored energy, such as compressed air, battery power, or hydraulic pressure, must have two independent stored energy systems, such as compressed air cylinders, battery banks, or hydraulic cylinders, that are capable of maintaining the vessel's propulsion, steering, and related controls.
              (m) After a power failure, electrical motors used to maintain propulsion and steering must automatically restart when power is restored, unless remote control starting is provided at the operating station.

              § 143.590
              Propulsor redundancy on vessels that move tank barges carrying oil or hazardous material in bulk.
              (a) A towing vessel must be provided with at least two independent propulsors unless the requirements of § 143.595 are met.
              (b) There must be independent controls for each propulsor at each operating station.
              (c) In the event of a failure of a single propulsor, the remaining propulsor(s) must have sufficient power to maneuver the vessel to a safe location.

              § 143.595
              Vessels with one propulsor that move tank barges carrying oil or hazardous material in bulk.
              (a) A towing vessel must have independent, duplicate vital auxiliaries. For the purpose of this section, vital auxiliaries are the equipment necessary to operate the propulsion engine, and include fuel pumps, lubricating oil pumps, and cooling water pumps. In the event of a failure or malfunction of any single vital auxiliary, the propulsion engine must continue to provide propulsion adequate to maintain control of the tow.
              (b) In the event of a failure, the corresponding independent duplicate vital auxiliary, described in paragraph (a) of this section, must be fully capable of assuming the operation of the failed unit.

              § 143.600
              Alternative standards for vessels that move tank barges carrying oil or hazardous material in bulk.
              In lieu of meeting §§ 143.585 through 143.595, a towing vessel may comply with Sections 7-5 (class ABCU) and 3-5 (class R2) of Part 4 of the ABS Rules for Building and Classing Steel Vessels Under 90 Meters (295 Feet) in Length (incorporated by reference, see § 136.112 of this subchapter), except that a vessel that operates exclusively on rivers or intracoastal waterways does not need to comply with 4-7-4/3.9 and the automatic day tank fill pump requirement of 4-7-4/25.3.

              § 143.605
              Demonstration of compliance on vessels that move tank barges carrying oil or hazardous material in bulk.

              (a) The owner or managing operator of each towing vessel must devise test procedures that demonstrate compliance with the design and engineering requirements prescribed in this subpart.

              (b) The tests required in paragraph (a) of this section must be satisfactorily conducted and witnessed by the cognizant OCMI or a TPO. A record of the tests must be retained by the owner or managing operator and be available upon request of the cognizant OCMI or TPO.

          Pt. 144
          PART 144—CONSTRUCTION AND ARRANGEMENT

              Subpart A—General
              Sec.
              144.100
              Purpose.
              144.105
              Applicability and delayed implementation.
              144.120
              A classed vessel.
              144.125
              A vessel with a load line.
              144.130
              A vessel built to the International Convention for the Safety of Life at Sea, 1974, as amended, requirements.
              144.135
              Verification of compliance with design standards.
              144.140
              Qualifications.
              144.145
              Procedures for verification of compliance with design standards.
              144.155
              Verification of compliance with design standards for a sister vessel.
              144.160
              Marking.

              Subpart B—Structure
              144.200
              Structural standards for an existing vessel.
              144.205
              Structural standards for a new vessel.
              144.215
              Special consideration.

              Subpart C—Stability and Watertight Integrity
              144.300
              Stability standards for an existing vessel.
              144.305
              Stability standards for a new vessel.
              144.310
              Lifting requirements for a new vessel.
              144.315
              Weight and moment history requirements for a vessel with approved lightweight characteristics.
              144.320
              Watertight or weathertight integrity.
              144.330
              Review of a vessel's watertight and weathertight integrity.

              Subpart D—Fire Protection
              144.400
              Applicability.
              144.405
              Fire hazards to be minimized.
              144.410
              Separation of machinery and fuel tank spaces from accommodation spaces.
              144.415
              Combustibles insulated from heated surfaces.
              144.425
              Waste receptacles.
              144.430
              Mattresses.

              Subpart E—Emergency Escape
              144.500
              Means of escape.
              144.505
              Location of escapes.
              144.510
              Window as a means of escape.
              144.515
              One means of escape required.

              Subpart F—Ventilation
              144.600
              Ventilation for accommodations.
              144.605
              Means to stop fans and close openings.
              144.610
              Ventilation in a vessel more than 65 feet in length.

              Subpart G—Crew Spaces
              144.700
              General requirements.
              144.710
              Overnight accommodations.
              144.720
              Crew rest consideration.

              Subpart H—Rails and Guards
              144.800
              Handrails and bulwarks.
              144.810
              Storm rails.
              144.820
              Guards in dangerous places.
              144.830
              Protection against hot piping.

              Subpart I—Visibility
              144.905
              Operating station visibility.
              144.920
              Window or portlight strength in a new vessel.

            Authority:
            46 U.S.C. 3103, 3301, 3306, 3308, 3316, 8104, 8904; 33 CFR 1.05; DHS Delegation No. 0170.1.

            Source:
            USCG-2006-24412, 81 FR 40101, June 20, 2016, unless otherwise noted.

            Subpart A—General

              § 144.100
              Purpose.
              This part details the requirements for design, construction and arrangement, and verification of compliance with this part, including document review.

              § 144.105
              Applicability and delayed implementation.
              This part applies to each towing vessel subject to this subchapter. Note that §§ 144.200 and 144.300 only apply to an existing vessel and that the following sections only apply to a new vessel: §§ 144.205, 144.305, 144.310, 144.405, 144.410, 144.420, 144.425, 144.430, 144.910, and 144.920.

              (a) An existing towing vessel must comply with § 144.320 starting July 20, 2016 and it must comply with the other applicable requirements in this part no later than either July 20, 2018 or the date the vessel obtains a Certificate of Inspection (COI), whichever date is earlier.
              (b) The delayed implementation provisions in paragraph (a) of this section do not apply to a new towing vessel.
              (c) Alterations or modifications made to the structure or arrangements of an existing vessel that are a major conversion, made on or after the July 20, 2017, must comply with the regulations applied to a new towing vessel of this part insofar as is reasonable and practicable. Repairs conducted on an existing vessel, resulting in no significant changes to the original structure or arrangement of the vessel, must comply with the standards applicable to the vessel at the time of construction or, as an alternative, with the regulations in this part.
              [USCG-2006-24412, 81 FR 40101, June 20, 2016; 81 FR 47312, July 21, 2016]

              § 144.120
              A classed vessel.
              A vessel currently classed by a recognized classification society is deemed to be in compliance with the requirements of subparts B and C of this part.

              § 144.125
              A vessel with a load line.
              A vessel with a valid load line certificate issued in accordance with subchapter E of this chapter may be deemed in compliance with the requirements of subparts B and C of this part.

              § 144.130
              A vessel built to the International Convention for the Safety of Life at Sea, 1974, as amended, requirements.
              A vessel built to the International Convention for the Safety of Life at Sea, 1974, as amended, is considered to be in compliance with this part.

              § 144.135
              Verification of compliance with design standards.
              Verification of compliance with the construction and arrangement design standards of this part must be performed according to the following table:

                Table 144.135—Verification of Compliance With Design Standards

                  If the vessel is—
                  Then the applicable requirements must be met—

                  (a) A new vessel,
                  Before the COI is issued.

                  (b) A vessel to undergo a major conversion or alteration to the hull, machinery, or equipment that may affect the vessel's safety,
                  Before the major conversion or alteration is performed.

                  (c) A vessel on which a new installation that is not a “replacement in kind”,
                  Before the new installation is performed.

              [USCG-2006-24412, 81 FR 40101, June 20, 2016; 81 FR 47312, July 21, 2016]

              § 144.140
              Qualifications.
              Use the following table to determine the individual or entity that may conduct a verification of compliance with design standards required by § 144.135.

                Table 144.140

                  Verification of compliance with design standards may be performed by—
                  Provided that—

                  (a) A registered professional engineer (P.E.) licensed by one of the states of the United States or the District of Columbia;
                  The PE ensures he or she does not exceed the scope of his or her P.E. license.

                  (b) An authorized classification society that has been delegated the authority to issue the SOLAS Cargo Ship Safety Construction Certificate under 46 CFR 8.320;
                  The authorized classification society ensures that the employees that perform the verification of compliance holds proper qualifications for the type of verification performed.

                  (c) The Coast Guard

              § 144.145
              Procedures for verification of compliance with design standards.
              (a) Verification of compliance with design standards, when required by § 144.135, must be performed by an individual or entity who meets the requirements of § 144.140.
              (b) Verification of compliance with design standards must be based on objective evidence of compliance with the applicable requirements and include:
              (1) A description of the vessel's intended service and route;
              (2) The standards used for the vessel's design and construction;
              (3) Deviations from the standards used, if any;

              (4) A statement that the vessel is suitable for the intended service and route; and
              (5) The identification of the individual or entity in Table 144.140 of § 144.140 who conducted the verification of compliance.
              (c) Verification of compliance with design standards must include review and analyses of sufficient plans, drawings, schematics, calculations, and other documents to ensure the vessel complies with the standards used. The plans must be stamped with the seal authorized for use by the individual or entity performing the verification of compliance, or otherwise indicate that they have been reviewed and determined to meet the applicable standards by an individual or entity who meets the requirements of § 144.140.
              (d) A copy of the verified plan must be provided to the cognizant Officer in Charge, Marine Inspection (OCMI) and the third-party organization (TPO) conducting the surveys, if applicable, except as provided in paragraph (e) of this section.
              (e) Plans verified by an authorized classification society need only be provided to the Coast Guard upon request.
              (f) If the vessel is a new vessel, a copy of the verified plan must be available at the construction site.
              (g) As referred to in this section, the term plan may include, but is not limited to drawings, documents, or diagrams of the following:
              (1) Outboard profile.
              (2) Inboard profile.
              (3) Arrangement of decks.
              (4) Midship section and scantling plans.
              (5) Survival craft embarkation stations.
              (6) Machinery installation, including, but not limited to:
              (i) Propulsion and propulsion control, including shaft details;
              (ii) Steering and steering control, including rudder details;
              (iii) Ventilation diagrams;
              (iv) Fuel transfer and service system, including tanks;
              (v) Piping systems including: bilge, ballast, hydraulic, combustible and flammable liquids, vents, and overflows; and
              (vi) Hull penetrations and shell connections;
              (7) Electrical installation including, but not limited to:
              (i) Elementary one-line diagram of the power system;
              (ii) Cable lists;
              (iii) Type and size of generators and prime movers;
              (iv) Type and size of generator cables, bus-tie cables, feeders, and branch circuit cables;
              (v) Power and lighting panelboards with number of circuits and rating of energy consuming devices;
              (vi) Capacity of storage batteries;
              (vii) Rating of circuit breakers and switches, interrupting capacity of circuit breakers, and rating and setting of overcurrent devices; and
              (viii) Electrical plant load analysis as required by § 143.555 of this subchapter.
              (8) Lifesaving equipment locations and installation;
              (9) Fire protection equipment installation including, but not limited to:
              (i) Fire main system plans and calculations;
              (ii) Fixed gas fire extinguishing system plans and calculations;
              (iii) Fire detecting system and smoke detecting system plans;
              (iv) Sprinkler system diagram and calculations; and
              (v) Portable fire extinguisher types, sizes, and locations;
              (10) Lines and offsets, curves of form, cross curves of stability, tank capacities including size and location on vessel, and other stability documents needed to show compliance; and
              (11) Towing arrangements.

              § 144.155
              Verification of compliance with design standards for a sister vessel.
              (a) Verification of compliance required by § 144.135 is not required for a sister vessel, provided that:
              (1) The original vessel has been verified as complying with this part;
              (2) The owner authorizes the use of the plans for the original vessels for the new construction of the sister vessel;

              (3) The standards used in the design and construction of the original vessel have not changed since the original verification of compliance;

              (4) The sister vessel is built to the same verified plans, drawings, schematics, calculations, and other documents and equipped with machinery of the same make and model as the original vessel, and has not been subsequently modified;
              (5) The sister vessel is built in the same shipyard facility as the original vessel; and
              (6) For a sister vessel subject to a stability standard, that the conditions in Table 144.155 of this section are met:

                Table 144.155

                  If—
                  Then—

                  (i) The delivery date of the sister vessel is not more than 2 years after a previous stability test date of either the original vessel or an earlier sister vessel,
                  The approved lightweight characteristics of that earlier vessel are adopted by the sister vessel;

                  (ii) Paragraph (a)(6)(i) of this section does not apply, and the lightweight characteristics determined from a deadweight survey of the sister vessel are shown to meet both the following criteria: (A) the lightweight displacement differs by not more than 3 percent of the earlier vessel's lightweight displacement, and
                     (B) the longitudinal center of gravity (LCG) differs by not more than 1 percent of the length between perpendiculars (LBP) of the earlier vessel's LCG,

                  The vertical center of gravity (VCG) of the earlier vessel is adopted by the sister vessel and used with the lightweight displacement and LCG determined from the deadweight survey of the sister vessel;

                  (iii) Neither paragraph (a)(6)(i) nor (ii) of this section apply because both the criteria in paragraphs (a)(6)(ii)(A) and (B) of this section are not met and lightweight characteristics were determined from a stability test on either the original vessel or a sister vessel,
                  The vessel must undergo a stability test in accordance with 46 CFR part 170, subpart F;

                  (iv) No vessel of the class of sister vessels previously underwent a stability test,
                  One vessel of the class must undergo a stability test in accordance with 46 CFR part 170, subpart F, and each sister vessel to which a stability standard applies must meet either paragraph (a)(6)(ii) or (iii) of this section.

              (b) A statement that verifies sister vessel status for each element of paragraph (a) of this section from an individual or entity meeting the requirements of § 144.140 must be retained and produced upon request.

              § 144.160
              Marking.
              (a) The hull of each documented vessel must be marked as required by part 67 of this chapter.
              (b) The hull of each undocumented vessel must be marked with its name and hailing port.
              (c) A vessel complying with either § 144.300(a) or § 144.305 must have draft marks that meet the requirements of § 97.40-10 of this chapter.
              (d) Each vessel assigned a load line must have the load line marks and the deck line permanently scribed or embossed as required by subchapter E of this chapter.
              (e) Each watertight door and watertight hatch must be marked on both sides in clearly legible letters at least 25 millimeters (1 inch) high: “WATERTIGHT DOOR—KEEP CLOSED” or “WATERTIGHT HATCH—KEEP CLOSED”.
              (f) Each escape hatch and emergency exit used as means of escape must be marked on both sides in clearly legible letters at least 50 millimeters (2 inches) high: “EMERGENCY EXIT, KEEP CLEAR”.

            Subpart B—Structure

              § 144.200
              Structural standards for an existing vessel.
              An existing vessel may be deemed by the OCMI, or TPO, to be in compliance with this subpart provided that either:
              (a) The vessel is built, equipped, and maintained to conform to the rules of a recognized classification society appropriate for the intended service and routes, but not classed; or
              (b) The vessel has been both in satisfactory service insofar as structural adequacy is concerned and does not cause the structure of the vessel to be questioned by either the OCMI, or TPO engaged to perform an audit or survey.

              § 144.205
              Structural standards for a new vessel.

              (a) Except as provided in paragraphs (b) and (c) of this section, a new vessels must comply with the standards established by the American Bureau of Shipping (ABS) as provided in the following table.

                Table 144.205(a)—Structural Standards for a New Vessel

                  For a new vessel to be certificated for service on—
                  ABS Rules for Building and Classing—

                  (1) Lakes, bays, and sounds, limited coastwise, coastwise, and oceans routes;
                  Steel Vessels Under 90 Meters (295 Feet) in Length (incorporated by reference, see § 136.112 of this subchapter) apply; or

                  (2) Rivers or intracoastal waterways routes
                  Steel Vessels for Service on Rivers and Intracoastal Waterways (incorporated by reference, see § 136.112 of this subchapter) apply.

              (b) Alternate design standards to comply with this subpart may be approved in accordance with § 136.115 of this subchapter.
              (c) The current standards of a recognized classification society, other than ABS, may be used provided they are accepted by the Coast Guard as providing an equivalent level of safety.
              (d) The structural standard selected must be applied throughout the vessel including design, construction, installation, maintenance, alteration, and repair. Deviations are subject to approval by the Commanding Officer, Marine Safety Center.

              § 144.215
              Special consideration.
              The cognizant OCMI may give special consideration to the structural requirements for a vessel if that vessel is:
              (a) Not greater than 65 feet in length;
              (b) Operating exclusively within a limited geographic area; or
              (c) Of an unusual design not contemplated by the rules of the American Bureau of Shipping or other recognized classification society.

            Subpart C—Stability and Watertight Integrity

              § 144.300
              Stability standards for an existing vessel.
              (a) The owner or managing operator of an existing vessel operating under a stability document must be able to readily produce a copy of such document.
              (b) The owner or managing operator of an existing vessel not operating under a stability document must be able to show at least one of the following:
              (1) The vessel's operation or a history of satisfactory service does not cause the stability of the vessel to be questioned by either the Coast Guard or a TPO engaged to perform an audit or survey.
              (2) The vessel performs successfully on operational tests to determine whether the vessel has adequate stability and handling characteristics.
              (3) The vessel has a satisfactory stability assessment by means of giving due consideration to each item that impacts a vessel's stability characteristics which include, but are not limited to, the form, arrangement, construction, number of decks, route, and operating restrictions of the vessel.

              § 144.305
              Stability standards for a new vessel.
              Each new vessel must meet the applicable stability requirements of part 170 and, if applicable, of part 173, subpart E, of this chapter in addition to the requirements in the following table:

                Table 144.305—Stability Standards for a New Vessel

                  Each new vessel certificated to operate on—
                  Must meet the requirements of—

                  (a) Protected waters
                  § 170.173(e)(2) of this chapter.

                  (b) Partially protected waters
                  §§ 170.170 and 170.173(e)(1) of this chapter.

                  (c) Exposed waters or that is assigned a load line
                  §§ 170.170 and 174.145 of this chapter.

              § 144.310
              Lifting requirements for a new vessel.
              Each new vessel equipped for lifting must meet the requirements of part 173, subpart B, of this chapter.

              § 144.315
              Weight and moment history requirements for a vessel with approved lightweight characteristics.

              (a) A weight and moment history of changes to the vessel since approval of its lightweight characteristics (displacement, Longitudinal Center of Gravity (LCG) and Vertical Center of Gravity (VCG)) must be maintained. All weight modifications to the vessel (additions, removals, and relocations) including a calculation of the aggregate weight change (absolute total of all additions, removals, and relocations) must be recorded in the history, along with a description of the change(s), when and where accomplished, moment arms, etc. After each modification, the lightweight characteristics must be recalculated.
              (b) When the aggregate weight change is more than 2 percent of the vessel's approved lightweight displacement, or the recalculated change in the vessel's lightweight LCG is more than 1 percent of the LBP, a deadweight survey must be performed to determine the vessel's current lightweight displacement and LCG. Use the following table to determine when the deadweight survey results or the vessel's aggregate weight change requires the vessel to undergo a specified stability test:

                Table 144.315

                  If—
                  Then—

                  (1) The deadweight survey results are both within 1 percent of the recalculated lightweight displacement and within 1 percent LBP of the recalculated lightweight LCG,
                  the recalculated lightweight VCG can be accepted as accurate;

                  (2) The deadweight survey results do not meet the criteria of paragraph (b)(1) of this section,
                  the vessel must undergo a stability test in accordance with 46 CFR 170, subpart F;

                  (3) The aggregate weight change is more than 10 percent of the vessel's approved lightweight displacement,
                  the vessel must undergo a stability test in accordance with 46 CFR 170, subpart F.

              § 144.320
              Watertight or weathertight integrity.
              (a) Each vessel fitted with installed bulwarks around the exterior of the main deck must have sufficient freeing ports or scuppers or a combination of freeing ports and scuppers to allow water to run off the deck quickly without adversely affecting the stability of the vessel.
              (b) Closure devices must be provided for deckhouse or hull penetrations, which open to the exterior of the vessel and which may allow water to enter the vessel. These devices must be suitable for the expected route.

              § 144.330
              Review of a vessel's watertight and weathertight integrity.
              The cognizant OCMI may require review of a vessel's watertight and weathertight integrity. This review may be performed by an individual who meets the requirements of § 144.140. The review may include an examination of a plan that shows the original placement of decks and bulkheads.

            Subpart D—Fire Protection

              § 144.400
              Applicability.
              Except for § 144.415, which applies to each new and existing vessel, this subpart applies to each new towing vessel.

              § 144.405
              Fire hazards to be minimized.
              Each vessel must be designed and constructed to minimize fire hazards insofar as reasonable and practicable.

              § 144.410
              Separation of machinery and fuel tank spaces from accommodation spaces.
              Machinery and fuel tank spaces must be separated from accommodation spaces by bulkheads. Doors may be installed provided they are the self-closing type.

              § 144.415
              Combustibles insulated from heated surfaces.
              Internal combustion engine exhaust ducts, galley exhaust ducts and similar ignition sources must be insulated with noncombustible insulation if less than 450 mm (18 inches) away from combustible material. Installations in accordance with ABYC P-1 or NFPA 302 (incorporated by reference, see § 136.112 of this subchapter) will be considered as meeting the requirements of this section.

              § 144.425
              Waste receptacles.
              Unless other means are provided to ensure that a potential waste receptacle fire would be limited to the receptacle, waste receptacles must be constructed of noncombustible materials with no openings in the sides or bottom.

              § 144.430
              Mattresses.
              Each mattress must comply with either:
              (a) The Consumer Product Safety Commission Standard for Mattress Flammability (FF 4-72, Amended), 16 CFR part 1632, subpart A, and not contain polyurethane foam; or

              (b) IMO Resolution A.688(17) (incorporated by reference, see § 136.112 of this subchapter) in which case the mattress may contain polyurethane foam.

            Subpart E—Emergency Escape

              § 144.500
              Means of escape.
              Where practicable and except as provided in § 144.515, each space where crew may be quartered or normally employed must have at least two means of escape. Arrangements on an existing vessel may be retained if it is impracticable or unreasonable to provide two means of escape.

              § 144.505
              Location of escapes.
              The two required means of escape must be widely separated and, if possible, at opposite ends or sides of the space. Means may include normal and emergency exits, passageways, stairways, ladders, deck scuttles, doors, and windows.

              § 144.510
              Window as a means of escape.
              On a vessel of 65 feet (19.8 meters) or less in length, a window or windshield of sufficient size and proper accessibility may be used as one of the required means of escape from an enclosed space, provided it:
              (a) Does not lead directly overboard;
              (b) Is suitably marked; and
              (c) Has a means to open the window or break the glass.

              § 144.515
              One means of escape required.
              Only one means of escape is required from a space where:
              (a) The space has a deck area less than 30 square meters (322 square feet);
              (b) There is no stove, heater, or other source of fire in the space;
              (c) The means of escape is located as far as possible from a machinery space or fuel tank; and
              (d) If an accommodation space, the single means of escape does not include a deck scuttle or a ladder.

            Subpart F—Ventilation

              § 144.600
              Ventilation for accommodations.
              Each accommodation space on a vessel must be ventilated in a manner suitable for the purpose of the space.

              § 144.605
              Means to stop fans and close openings.
              Means must be provided for stopping each fan in a ventilation system serving machinery spaces and for closing, in case of fire, each doorway, ventilator, and annular space around funnels and other openings into such spaces.

              § 144.610
              Ventilation in a vessel more than 65 feet in length.
              A vessel of more than 65 feet (19.8 meters) in length with overnight accommodations must have a mechanical ventilation system unless a natural system, such as opening windows, portholes, or doors, will provide adequate ventilation in ordinary weather.

            Subpart G—Crew Spaces

              § 144.700
              General requirements.
              (a) A crew accommodation space and a work space must be of sufficient size, adequate construction, and with suitable equipment to provide for the safe operation of the vessel and the protection and accommodation of the crew in a manner practicable for the size, facilities, service, route, and modes of operation of the vessel.
              (b) The deck above a crew accommodation space must be located above the deepest load waterline.

              § 144.710
              Overnight accommodations.
              Overnight accommodations must be provided for crewmembers if it is operated more than 12 hours in a 24-hour period, unless the crew is put ashore and the vessel is provided with a new crew.

              § 144.720
              Crew rest consideration.
              The condition of the crew accommodations must consider the importance of crew rest. Factors to consider include vibrations, ambient light, noise levels, and general comfort. Every effort must be made to ensure that quarters help provide a suitable environment for sleep and off-duty rest.

            Subpart H—Rails and Guards

              § 144.800
              Handrails and bulwarks.
              (a) Rails or equivalent protection must be installed near the periphery of all decks accessible to crew. Equivalent protection may include lifelines, wire rope, chains, and bulwarks that provide strength and support equivalent to fixed rails.
              (b) In areas where space limitations make deck rails impractical, such as at narrow catwalks in way of deckhouse sides, hand grabs may be substituted.

              § 144.810
              Storm rails.
              On a vessel in oceans or coastwise service, suitable storm rails or hand grabs must be installed in all passageways and at the deckhouse sides where persons onboard might have normal access.

              § 144.820
              Guards in dangerous places.
              An exposed hazard such as gears and rotating machinery, must be protected by a cover, guard or rail. This is not meant to restrict access to towing equipment such as winches, drums, towing gear or steering compartment equipment necessary for the operation of the vessel.

              § 144.830
              Protection against hot piping.
              Each exhaust pipe from an internal combustion engine which is within reach of personnel must be insulated or otherwise guarded to prevent burns. On a new vessel, each pipe that contains vapor, gas, or liquid that has a temperature exceeding 150 °F (65.5 °C) which is within reach of personnel must be insulated where necessary or otherwise guarded to prevent injury.

            Subpart I—Visibility

              § 144.905
              Operating station visibility.
              (a) Windows and other openings at the operating station must be of sufficient size and properly located to provide a clear field of vision for safe operation in any condition.
              (b) Means must be provided to ensure that windows immediately forward of the operating station in the pilothouse allow for adequate visibility to ensure safe navigation regardless of weather conditions. This may include mechanical means such as windshield wipers, defoggers, clear-view screens, or other such means, taking into consideration the intended route of the vessel.
              (c) The field of vision from the operating station on a new vessel must extend over an arc from dead ahead to at least 60 degrees on either side of the vessel.
              (d) If a new vessel is towing astern, the operating station must be provided with a view aft.
              (e) In a new vessel, glass or other glazing material used in windows at the operating station must have a light transmission of not less than 70 percent according to Test 2 of ANSI/SAE Z 26.1-1996 (incorporated by reference, see § 136.112 of this subchapter) and must comply with Test 15 of ANSI/SAE Z 26.1-1996 for Class I Optical Deviation.

              § 144.920
              Window or portlight strength in a new vessel.
              (a) Each window or portlight, and its means of attachment to the hull or the deckhouse, must be capable of withstanding the maximum expected load from wind and waves, due to its location on the vessel and the vessel's authorized route.
              (b) Any covering or protection placed over a window or porthole that could be used as a means of escape must be able to be readily removed or opened from within the space.
              (c) Glass and other glazing materials used in windows of a new towing vessel must be materials that will not break into dangerous fragments if fractured.

        SUBCHAPTER N—DANGEROUS CARGOES

          PARTS 145-146 [RESERVED]

          Pt. 147
          PART 147—HAZARDOUS SHIPS' STORES

              Subpart A—General Provisions
              Sec.
              147.1
              Purpose and applicability.
              147.3
              Definitions.
              147.5
              Commandant (CG-OES); address.
              147.7
              Incorporation by reference.
              147.8
              OMB control numbers assigned pursuant to the Paperwork Reduction Act.
              147.9
              Waivers.
              147.15
              Hazardous ships' stores permitted on board vessels.
              147.30
              Labeling.
              147.33
              Right of appeal.

              Subpart B—Stowage and Other Special Requirements for Particular Materials
              147.35
              Purpose of subpart.
              147.40
              Materials requiring Commandant (CG-OES) approval.
              147.45
              Flammable and combustible liquids.
              147.50
              Fuel for cooking, heating, and lighting.
              147.60
              Compressed gases.
              147.65
              Carbon dioxide and Halon fire extinguishing systems.
              147.66
              Inert gas fire extinguishing systems.
              147.67
              Halocarbon fire extinguishing systems.
              147.70
              Acetylene.
              147.85
              Oxygen.
              147.90
              Refrigerants.
              147.95
              Explosives.
              147.100
              Radioactive materials.
              147.105
              Anesthetics, drugs, and medicines.

            Authority:
            46 U.S.C. 3306; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; Department of Homeland Security Delegation No. 0170.1.

            Source:
            CGD 84-044, 53 FR 7749, Mar. 10, 1988, unless otherwise noted.

            Editorial Note:
            Nomenclature changes to part 147 appear by USCG-2009-0702, 74 FR 49235, Sept. 25, 2009, and USCG-2012-0832, 77 FR 59782, Oct. 1, 2012.

            Subpart A—General Provisions

              § 147.1
              Purpose and applicability.
              (a) This part prescribes regulations designating what hazardous materials may be on board vessels as ships' stores and prescribes requirements for the labeling, stowage, and use of those materials.
              (b) This part applies to all vessels listed in 46 U.S.C. 3301 as subject to inspection under part B of 46 U.S.C. Subtitle II. On foreign vessels in the navigable waters of the United States, the Captain of the Port or District Commander may prohibit the unsafe use or stowage of hazardous ships' stores under 33 CFR 160.109.
              (c) All certifications previously issued by the Coast Guard under this part permitting the use of particular materials or products as ships' stores are null and void.
              (d) The regulations in this subchapter (46 CFR parts 147, 147A, and 148) have preemptive effect over State or local regulations in the same field.
              [CGD 84-044, 53 FR 7749, Mar. 10, 1988, as amended by USCG-2006-24797, 77 FR 33885, June 7, 2012; USCG-2012-0196, 81 FR 48272, July 22, 2016]

              § 147.3
              Definitions.
              As used in this part:

                Accommodation, control, or service spaces means living quarters, including walkways, dining rooms, galleys, pantries, lounges, lavatories, cabins, staterooms, offices, hospitals, cinemas, and game and hobby rooms; areas containing controls for equipment and navigation; workshops, other than those forming part of machinery spaces; and store rooms adjacent to these spaces.

                Combustible liquid means combustible liquid as the term is defined in 49 CFR 173.120(b).

                Compressed gas means compressed gas as the term is defined in 49 CFR 173.115.

                Consumer commodity means a commodity, such as a polish, insecticide, cleaning compound, or distillate, that is packaged and distributed in a form and quantity intended for sale through retail sales establishments.

                Flammable liquid means flammable liquid as the term is defined in 49 CFR 173.120(a).

                Hazardous material means hazardous material as the term is defined in 49 CFR 171.8.

                Hazardous ships' stores means ships' stores that are hazardous materials.

                Proper shipping name means the name of the hazardous ships' stores shown in Roman print (not in italics) in 49 CFR 172.101.

                Ships' stores means materials which are on board a vessel for the upkeep, maintenance, safety, operation, or navigation of the vessel (except for fumigants under part 147A of this chapter, for fuel and compressed air used for the vessel's primary propulsion machinery, or for fixed auxiliary equipment) or for the safety or comfort of the vessel's passengers or crew.

                Technical name means the recognized chemical name used in scientific or technical publications.
              [CGD 84-044, 53 FR 7749, Mar. 10, 1988, as amended by CGD 97-057, 62 FR 51048, Sept. 30, 1997]

              § 147.5
              Commandant (CG-OES); address.
              Commandant (CG-ENG) is the Office of Design and Engineering Standards. The mailing address is Commandant (CG-ENG), Attn: Office of Design and Engineering Systems, U.S. Coast Guard Stop 7509, 2703 Martin Luther King Jr. Avenue SE., Washington, DC 20593-7509; telephone 202-372-1372.
              [USCG-2013-0671, 78 FR 60154, Sept. 30, 2013]

              § 147.7
              Incorporation by reference.

              (a) Certain material is incorporated by reference into this part with the approval of the Director of the Federal Register under 5 U.S.C. 552(a) and 1 CFR part 51. To enforce any edition other than that specified in this section, the Coast Guard must publish notice of change in the Federal Register and the material must be available to the public. All approved material is available for inspection at Coast Guard Headquarters. Contact Commandant (CG-ENG), Attn: Office of Design and Engineering Systems, U.S. Coast Guard Stop 7509, 2703 Martin Luther King Jr. Avenue SE., Washington, DC 20593-7509. The material is also available from the sources listed below. It is also available for inspection at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030 or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.

              (b) American Boat and Yacht Council, Inc. (ABYC), 613 Third Street, Suite 10, Annapolis, MD 21403, telephone 410-990-4460, www.abyinc.org.

              (1) ABYC H-25-81, Portable Fuel Systems and Portable Containers for Flammable Liquids, (May 12, 1981), (“ABYC H-25-81”), IBR approved for § 147.45.
              (2) [Reserved]

              (c) American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. (ASHRAE), Publication Sales Department, 1791 Tullie Circle NE., Atlanta, GA 30329, telephone 404-636-8400, www.ashrae.org.

              (1) ANSI/ASHRAE 34-78, Number Designation of Refrigerants (approved 1978), (“ANSI/ASHRAE 34-78”), IBR approved for § 147.90.
              (2) [Reserved]

              (d) Compressed Gas Association, Inc. (CGA), 14501 George Carter Way, Suite 103, Chantilly, Virginia 20151, 703-788-2700, http://www.cganet.com.
              (1) CGA C-6-2007, Standards for Visual Inspection of Steel Compressed Gas Cylinders, Tenth Edition, 2007, IBR approved for § 147.65(b).
              (2) [Reserved]

              (e) National Fire Protection Association (NFPA), 1 Batterymarch Park, Quincy, MA 02169, 617-770-3000, http://www.nfpa.org.
              (1) NFPA 2001, Standard on Clean Agent Fire Extinguishing Systems, 2008 Edition, IBR approved for §§ 147.66(c) and 147.67(c).
              (2) NFPA 12A, Standard on Halon 1301 Fire Extinguishing Systems, 2009 Edition, effective July 18, 2008, IBR approved for § 147.65(b).

              (f) Public Health Service (PHS), Department of Health and Human Services (DHHS), Superintendent of Documents, U.S. Government Printing Office, 710 North Capitol Street NW., Washington, DC 20401, 866-512-1800, http://www.gpo.gov.

              (1) DHHS Publication No. PHS 84-2024, The Ship's Medicine Chest and Medical Aid at Sea, revised 1984, IBR approved for § 147.105.
              (2) [Reserved]

              (g) UL (formerly Underwriters Laboratories), 12 Laboratory Drive, P.O. Box 13995, Research Triangle Park, NC 27709, 919-549-1400, http://www.ul.com.

              (1) UL 30, Standard for Metal Safety Cans, 7th Ed., revised March 3, 1987, (“UL 30”), IBR approved for § 147.45(f).
              (2) UL 1185, Standard for Portable Marine Fuel Tanks, Second Edition, revised July 6, 1984, (“UL 1185”), IBR approved for § 147.45(f).
              (3) UL 1313, Standard for Nonmetallic Safety Cans for Petroleum Products, 1st Ed., revised March 22, 1985, (“UL 1313”), IBR approved for § 147.45(f).
              (4) UL 1314, Standard for Special-Purpose Containers, 1st Ed., revised February 7, 1984, (“UL 1314”), IBR approved for § 147.45(f).
              [USCG-2006-24797, 77 FR 33885, June 7, 2012, as amended by USCG-2013-0671, 78 FR 60154, Sept. 30, 2013; USCG-2012-0196, 81 FR 48272, July 22, 2016]

              § 147.8
              OMB control numbers assigned pursuant to the Paperwork Reduction Act.
              (a) Purpose. This section collects and displays the control numbers assigned to information collection and recordkeeping requirements in this subchapter by the Office of Management and Budget (OMB) pursuant to the Paperwork Reduction Act of 1980 (44 U.S.C. 3501 et seq.). The Coast Guard intends that this section comply with the requirements of 44 U.S.C. 3507(f), which requires that agencies display a current control number assigned by the Director of the OMB for each approved agency information collection requirement.
              (b) Display.

                  46 CFR part or section where identified or described
                  Current OMB control no.

                  § 147.9
                  1625-0034

                  § 147.30
                  1625-0034

                  § 147.40
                  1625-0034

                  § 147.60(c)(2)
                  1625-0034

              [CGD 88-072, 53 FR 34298, Sept. 6, 1988; CGD 88-072, 53 FR 37570, Sept. 27, 1988, as amended by USCG-2004-18884, 69 FR 58349, Sept. 30, 2004]

              § 147.9
              Waivers.
              (a) Any requirement in this part may be waived on a case by case basis if it is determined by Commandant (CG-ENG) that the requirement is impracticable under the circumstances and that an acceptable level of safety can be maintained.
              (b) Requests for issuance of a waiver must be in writing and contain a detailed explanation of—
              (1) Why the requirement is impracticable; and
              (2) What measures will be taken to maintain an acceptable or equivalent level of safety.
              [CGD 84-044, 53 FR 7749, Mar. 10, 1988, as amended by CGD 95-072, 60 FR 50465, Sept. 29, 1995; CGD 96-041, 61 FR 50731, Sept. 27, 1996; USCG-2013-0671, 78 FR 60154, Sept. 30, 2013]

              § 147.15
              Hazardous ships' stores permitted on board vessels.
              Unless prohibited under subpart B of this part, any hazardous material may be on board a vessel as ships' stores if the material—
              (a) Is labeled according to § 147.30; and
              (b) Meets the requirements, if any, in subpart B of this part applicable to the material.

              § 147.30
              Labeling.
              (a) Except as provided in paragraph (b) of this section, all immediate receptacles, containers, or packages containing hazardous ships' stores must be labeled in English with the following information concerning the contents:
              (1) Technical name or proper shipping name.
              (2) For hazardous ships' stores other than liquid fuels, manufacturer's or supplier's name and address.
              (3) Hazard classification under 49 CFR 172.101, 173.2, and 173.2(a).
              (4) For hazardous ships' stores other than liquid fuels, step by step procedures for proper use.
              (5) First aid instructions in the event of personnel contact, including antidotes in the event of ingestion.
              (6) Stowage and segregation requirements.

              (b) Hazardous ships' stores that are consumer commodities labeled in accordance with the Federal Hazardous Substances Act Regulations in 16 CFR part 1500 need not be labeled as specified in paragraph (a) of this section.
              [CGD 84-044, 53 FR 7749, Mar. 10, 1988, as amended by CGD 97-057, 62 FR 51048, Sept. 30, 1997; USCG-2005-22329, 70 FR 57183, Sept. 30, 2005]

              § 147.33
              Right of appeal.
              Any person directly affected by a decision or action taken under this part, by or on behalf of the Coast Guard, may appeal therefrom in accordance with subpart 1.03 of this chapter.
              [CGD 88-033, 54 FR 50381, Dec. 6, 1989; 55 FR 21386, May 24, 1990]

            Subpart B—Stowage and Other Special Requirements for Particular Materials

              § 147.35
              Purpose of subpart.
              This subpart prescribes special requirements applicable to particular, named materials. These requirements are in addition to the general requirements in subpart A applicable to those materials.

              § 147.40
              Materials requiring Commandant (CG-OES) approval.
              (a) Commandant (CG-ENG) approval is required before the following hazardous materials may be on board a vessel as ships' stores:
              (1) Poison gases of Class 2, Division 2.3 and toxic liquids of Class 6, Division 6.1 which are poisonous by inhalation in Hazard Zone A.
              (2) Explosives of Divisions 1.1 or 1.2.
              (3) Flammable gases, other than those addressed specifically in this subpart.
              (4) Forbidden materials listed in 49 CFR 172.101.
              (b) Request for approval must be submitted to the Commandant (CG-ENG), identify the material, and explain the need for its use.
              (c) Upon approval, the material is added to the list of materials approved under this section. A copy of this list is available from the Commandant (CG-ENG) at the address in § 147.5.
              [CGD 84-044, 53 FR 7749, Mar. 10, 1988, as amended by CGD 95-072, 60 FR 50465, Sept. 29, 19955; CGD 96-041, 61 FR 50731, Sept. 27, 1996; CGD 97-057, 62 FR 51048, Sept. 30, 1997; USCG-2013-0671, 78 FR 60154, Sept. 30, 2013]

              § 147.45
              Flammable and combustible liquids.
              (a) This section applies to the stowage and transfer of flammable and combustible liquids (including gasoline and diesel oil), other than liquids used as fuel for cooking, heating, and lighting under § 147.50.
              (b) No flammable or combustible liquids may be stowed in any accommodation, control, or service space (other than a paint locker).
              (c) No more than 19 liters (five gallons) of flammable liquids may be stowed in any machinery space. The flammable liquids must be in containers of 3.8 liters (one gallon) or less.
              (d) No more than 208 liters (55 gallons) of combustible liquids may be stowed in any machinery space.
              (e) An aggregate of more than 7.6 liters (two gallons) of flammable or combustible liquids stowed outside of an accommodation, control, or service, space (other than a paint locker) or outside of a machinery space must be stowed in a paint locker that is marked with a warning sign indicating flammable or combustible liquid storage.
              (f) Flammable and combustible liquids used as fuel for portable auxiliary equipment must be stored in—
              (1) Integral tanks that form part of the vessel's structure;
              (2) An independent tank meeting the requirements of subpart 58.50 of Part 58 of this chapter;
              (3) A non-bulk packaging authorized for Class 3 (flammable) liquids or combustible liquids under 49 CFR 173.201, 173.202, or 173.203, as referenced for the specific liquid in column 8B of the Hazardous Materials Table of 49 CFR 172.101.
              (4) A portable outboard fuel tank meeting the specifications of ABYC H-25-81 (incorporated by reference, see § 147.7) or one identified by Underwriters Laboratories as meeting the specifications of UL 1185 (incorporated by reference, see § 147.7);
              (5) A portable safety container identified by Underwriters Laboratories as meeting the specifications of UL 30 or UL 1313 (both incorporated by reference, see § 147.7); or

              (6) A portable safety container identified by Underwriters Laboratories as meeting the requirements of UL 1314 (incorporated by reference, see § 147.7).
              (g) Each portable container of flammable or combustible liquid used for portable auxiliary equipment must be stowed in a paint locker or an open location designated by the master.
              (h) Fuel tanks for portable auxiliary equipment using flammable or combustible liquids may only be refilled on a vessel—
              (1) By using a container described in paragraph (f)(2), (f)(3), or (f)(5) of this section which has a capacity not exceeding 23 liters (6 gallons); or
              (2) In the case of portable outboard fuel tanks described in paragraph (f)(4) of this section, in accordance with paragraph (i) of this section.
              (i) Portable containers or portable outboard fuel tanks may be refilled from a larger container of flammable or combustible liquid on the weather deck of a vessel, other than a small passenger vessel subject to Subchapter T of this chapter, provided that—
              (1) A drip pan of adequate size is used to collect any drippings; and
              (2) At least one Coast Guard approved Type B, Size I, fire extinguisher is within three meters (9.75 feet) of the refilling location.
              [CGD 84-044, 53 FR 7749, Mar. 10, 1988, as amended by CGD 92-100, 59 FR 17001, Apr. 11, 1994; CGD 97-057, 62 FR 51048, Sept. 30, 1997; USCG-2006-24797, 77 FR 33885, June 7, 2012]

              § 147.50
              Fuel for cooking, heating, and lighting.
              (a) Flammable and combustible liquids and gases not listed in this section are prohibited for cooking, heating, or lighting on any vessel, with the exception of combustible liquids on cargo vessels.
              (b) Fluid alcohol is prohibited for cooking, heating, or lighting on ferry vessels. Fluid alcohol burners, where wet primed, must have a catch pan not less than 3/4 of an inch deep secured inside of the frame of the stove or have the metal protection under the stove flanged up 3/4 of an inch to form a pan.
              (c) Containers of solidified alcohol must be secured on a fixed base.
              (d) Liquefied or non-liquefied gas is prohibited for cooking, heating, and lighting on ferry vessels, but may be used on other inspected vessels if the system in which it is used meets the applicable requirements of subpart 58.16 or subpart 184.05 of this chapter, as appropriate, or is approved by the Commandant (CG-ENG).
              (e) Kerosene and commercial standard fuel oil No. 1, No. 2, and No. 3 are prohibited for cooking, heating, or lighting on ferry or passenger vessels, unless the following conditions are met:
              (1) Pressure or gravity feed must be used.
              (2) Where wet priming is used in a cooking device, the device must have a catch pan not less than three fourths of an inch deep secured inside the frame of the device or a metal protector under the device with a least a three fourths inch flange to form a pan.
              (3) Where wet priming is used, a non-flammable priming liquid must be used.
              (4) Fuel tanks for fixed stoves must be separated from the stove and mounted in a location open to the atmosphere or mounted inside a compartment with an outside fill and vent.
              (5) Fuel lines must have an easily accessible shut-off valve at the tank.
              (6) If the fuel tank is outside of a stove compartment, a shut-off valve must be fitted at the stove.
              [CGD 84-044, 53 FR 7749, Mar. 10, 1988, as amended by CGD 83-013, 54 FR 6402, Feb. 10, 1989; CGD 95-072, 60 FR 50465, Sept. 29, 1995; CGD 96-041, 61 FR 50731, Sept. 27, 1996]

              § 147.60
              Compressed gases.
              (a) Cylinder requirements. Cylinders used for containing hazardous ships' stores that are compressed gases must be—
              (1) Authorized for the proper shipping name of the gas in accordance with 49 CFR 172.101 and 49 CFR part 173;
              (2) Constructed in accordance with subpart C of 49 CFR part 178 or exempted under 49 CFR part 107;
              (3) Filled, marked, and inspected in accordance with 49 CFR 173.301 through 173.308; and
              (4) Except as provided in 46 CFR 147.65, 147.66, and 147.67, maintained and retested in accordance with 49 CFR 180.
              (b) Stowage and care of cylinders. (1) Cylinders must always be secured and, when not in use, they must be stowed in a rack in an upright position, with the valve protection cap in place.
              (2) Lockers or housings must be vented to the open air near the top and bottom for positive circulation of vapors.
              (3) Cylinders must be protected from all sources of heat which may cause the cylinders to be heated to a temperature higher than 130 °F.
              (c) Pressure vessels other than cylinders. Pressure vessels, other than cylinders subject to paragraph (a) of this section, used for containing ships' stores that are compressed gases must—
              (1) Be constructed and inspected in accordance with part 54 of this chapter; and
              (2) Carry only nitrogen or air, unless permission is granted by Commandant (CG-ENG) to do otherwise.
              [CGD 84-044, 53 FR 7749, Mar. 10, 1988, as amended by CGD 95-072, 60 FR 50465, Sept. 29, 19955; CGD 96-041, 61 FR 50731, Sept. 27, 1996; USCG-2006-24797, 77 FR 33886, June 7, 2012; USCG-2013-0671, 78 FR 60154, Sept. 30, 2013]

              § 147.65
              Carbon dioxide and Halon fire extinguishing systems.
              (a) Carbon dioxide cylinders forming part of a fixed fire extinguishing system must be maintained as follows:
              (1) Cylinders must be retested at least every 12 years. If a cylinder is discharged and more than 5 years have elapsed since the last test, it must be retested before recharging.
              (2) Carbon dioxide cylinders must be rejected for further service when they:
              (i) Leak;
              (ii) Are dented, bulging, severely corroded, or otherwise in a weakened condition;
              (iii) Have lost more than 5 percent of their tare weight; or
              (iv) Have been involved in a fire.
              (3) Cylinders which have contained gas agents for fixed fire extinguishing systems and have not been tested within 5 years must not be used to contain another compressed gas onboard a vessel, unless the cylinders are retested and re-marked in accordance with § 147.60(a)(3) and (4).
              (4) Flexible connections between cylinders and distribution piping of semi-portable or fixed carbon dioxide fire extinguishing systems and discharge hoses in semi-portable carbon dioxide fire extinguishing systems must be replaced or tested at a pressure of 6.9 MPa (1,000 psig). At test pressure, the pressure must not drop at a rate greater than 1.03 MPa (150 psi) per minute for a 2-minute period. The test must be performed when the cylinders are retested.
              (b) Halon cylinders forming part of a fixed fire extinguishing system must be maintained as follows:
              (1) The agent weight must be ascertained annually by one of the methods identified in paragraphs (b)(2) through (b)(4) of this section. Measured weights or liquid levels must be recorded and compared with the recommended fill levels and previous readings. If cylinder weight or liquid level, adjusted for temperature, shows a 5 percent loss of pressure, the cylinder must be refilled. If cylinder pressure, adjusted for temperature, shows a 10 percent loss of pressure, the cylinders must be refilled.
              (2) The cylinders may be removed from the mounting racks and weighed.
              (3) The contents of cylinders fitted with integral floating dipstick liquid level indicators may be measured with the dipstick indicator.
              (4) With approval of the cognizant Officer in Charge, Marine Inspection (OCMI), liquid level indication measures such as ultrasonic/audio gauging or radioisotope gauging may be used, provided that all of the following conditions are met:
              (i) Measurement equipment is calibrated for the cylinder wall thickness and Halon liquid.
              (ii) Calibration is verified by weighing the cylinders that indicate the lowest levels of Halon in each release group, but in no case less than 10 percent of the inspected cylinders in each release group.
              (iii) The acceptable liquid level is identified by the original system installer or coincides with all other cylinder liquid levels of the same release group.
              (iv) Measurements are made by personnel skilled in ultrasonic/audio gauging or radioisotope gauging techniques.

              (5) Effective 12 years after commissioning of the system or 5 years after the last hydrostatic test, whichever is later, the following inspections must be completed every 5 years:
              (i) Cylinders continuously in service without discharging must be removed from mounting racks and given a complete external visual inspection. The inspection must be conducted in accordance with the CGA Pamphlet C-6 (incorporated by reference, see § 147.7).
              (ii) The volume of agent must be ascertained either by removing and weighing the cylinder or by floating liquid level indicators, integral with the cylinder construction, taking into account adjustments necessary for cylinder temperature and pressure.
              (6) Flexible connections between cylinders and distribution piping of fixed Halon fire extinguishing systems must be:
              (i) Visually inspected for damage, corrosion, or deterioration every year and replaced if found unserviceable; and
              (ii) Inspected and tested in accordance with NFPA 12A, paragraph 6.3.1 (incorporated by reference, see § 147.7) except that hydrostatic testing must be performed every 12 years instead of every 5 years.
              (7) During any inspection, cylinders must be removed from service if they:
              (i) Leak;
              (ii) Are dented, bulging, severely corroded, or otherwise in a weakened condition; or
              (iii) Have been involved in a fire.
              (c) Cylinders that have contained carbon dioxide or Halon and have not been tested within 5 years must not be used to contain another compressed gas onboard a vessel, unless the cylinder is retested and re-marked in accordance with § 147.60(a)(3) and (4).
              [USCG-2012-0196, 81 FR 48272, July 22, 2016]

              § 147.66
              Inert gas fire extinguishing systems.
              (a) Inert gas cylinders forming part of a clean agent fixed fire extinguishing system must be retested every five years, except that cylinders with a water capacity of 125 pounds or less may be retested every 10 years in accordance with 49 CFR 180.209(b).
              (b) An inert gas cylinder must be removed from service if it:
              (1) Leaks;
              (2) Is dented, bulging, severely corroded, or otherwise weakened;
              (3) Has lost more than 5 percent of its tare weight; or
              (4) Has been involved in a fire.
              (c) Flexible connections between cylinders and discharge piping for fixed inert gas fire extinguishing systems must be renewed or retested in accordance with section 7.3 of NFPA 2001 (incorporated by reference, see § 147.7).
              [USCG-2006-24797, 77 FR 33886, June 7, 2012]

              § 147.67
              Halocarbon fire extinguishing systems.
              (a) Each halocarbon cylinder forming part of a clean agent fixed fire extinguishing system must be:
              (1) Retested at least once every 12 years and before recharging if it has been discharged and more than five years have elapsed since the last test; or
              (2) As an alternative, a cylinder conforming to the requirements of 49 CFR 180.209(g) may be given the complete external visual inspection in lieu of hydrostatic testing provided for by that section.
              (b) A halocarbon cylinder must be removed from service if it:
              (1) Leaks;
              (2) Is dented, bulging, severely corroded, or otherwise weakened;
              (3) Has lost more than 5 percent of its tare weight; or
              (4) Has been involved in a fire.
              (c) Flexible connections between cylinders and discharge piping for halocarbon fire extinguishing systems must be renewed or retested in accordance with section 7.3 of NFPA 2001 (incorporated by reference, see § 147.7).
              [USCG-2006-24797, 77 FR 33886, June 7, 2012]

              § 147.70
              Acetylene.
              (a) Seventeen cubic meters (600 standard cubic feet) or less of acetylene may be stowed on or below decks on any vessel.
              (b) More than 17 m3 (600 standard cubic feet) of acetylene may be on board a vessel engaged in industrial operations, if it is stowed on deck.

              § 147.85
              Oxygen.
              (a) Eighty five cubic meters (3000 standard cubic feet) or less of oxygen may be on board any vessel.
              (b) More than 85 m3 (3000 standard cubic feet) of oxygen may be on board a vessel engaged in industrial operations, if it is stowed on deck or in a well ventilated space.

              § 147.90
              Refrigerants.
              (a) Only refrigerants listed in ANSI/ASHRAE 34-78 may be carried as ships' stores.
              (b) Refrigerants contained in a vessel's operating system are not considered as being carried as ship's stores.

              § 147.95
              Explosives.
              (a) Explosives—general. Except as provided for elsewhere in this subchapter, explosives, as defined in 49 CFR 173.50, which are hazardous ships' stores must be stowed in accordance with 49 CFR 176.116 through 176.138.
              (b) Small arms ammunition. (1) No person shall bring, have in their possession, or use on board a vessel any small arms ammunition, except by express permission of the master of the vessel.
              (2) All small arms ammunition must be stowed and locked in a metal closed cargo transport unit for Class 1 (explosive) materials as defined in 49 CFR 176.2. The key to the cargo transport unit must be kept in the possession of the master or a person designated by the master.
              (c) Ships' signals and emergency equipment. (1) Explosive ships' signals and emergency equipment, including pyrotechnic distress signals and line throwing equipment, must be stowed in watertight containers or wood lined magazine chests.
              (2) All pyrotechnic distress signals, rockets, and line throwing guns must be stowed in accordance with the requirements of 49 CFR 176.140 through 176.146.
              [CGD 84-044, 53 FR 7749, Mar. 10, 1988, as amended by CGD 92-100, 59 FR 17001, Apr. 11, 1994; CGD 97-057, 62 FR 51048, Sept. 30, 1997; USCG-2013-0671, 78 FR 60154, Sept. 30, 2013]

              § 147.100
              Radioactive materials.
              (a) Radioactive materials must not be brought on board, used in any manner, or stored on the vessel, unless the use of the materials is authorized by a current license issued by the Nuclear Regulatory Commission (NRC) under 10 CFR parts 30 and 34.
              (b) Stowage of radioactive materials must conform to the requirements of the NRC license.

              § 147.105
              Anesthetics, drugs, and medicines.
              Anesthetics, drugs, and medicines must be stowed and dispensed in accordance with the DHHS Publication No. (PHS) 84-2024.

          Pt. 147A
          PART 147A—INTERIM REGULATIONS FOR SHIPBOARD FUMIGATION

              General
              Sec.
              147A.1
              Purpose.
              147A.3
              Applicability.
              147A.5
              General requirement.
              147A.6
              Right of appeal
              147A.7
              Definitions.
              147A.9
              Persons in charge of fumigation and the vessel; designation.
              147A.10
              Notice to Captain of the Port.

              Before Fumigation
              147A.11
              Person in charge of fumigation; before fumigation.
              147A.13
              Person in charge of the vessel; before fumigation.

              During Fumigation
              147A.21
              Person in charge of fumigation; during fumigation.
              147A.23
              Person in charge of vessel; during fumigation.
              147A.25
              Entry.

              After Ventilation
              147A.31
              Removal of fumigation material and warning signs.

              Special Requirements for Flammable Fumigants
              147A.41
              Person in charge of fumigation; flammable fumigants.
              147A.43
              Other sources of ignition; flammable fumigants.

            Authority:
            46 U.S.C. 5103; Department of Homeland Security Delegation No. 0170.1.

            Source:
            CGD 74-144, 39 FR 32998, Sept. 13, 1974, unless otherwise noted.

            General

              § 147A.1
              Purpose.
              The purpose of this part is to prescribe the requirements for shipboard fumigation that are critical for the health and safety of the crew and any other person who is on board a vessel during fumigation. These are interim rules pending further study and promulgation of comprehensive regulations on shipboard fumigation.

              § 147A.3
              Applicability.
              This part prescribes the rules for shipboard fumigation on vessels to which 49 CFR parts 171-179 apply under 49 CFR 176.5.
              [CGD 86-033, 53 FR 36026, Sept. 16, 1988]

              § 147A.5
              General requirement.
              No person may cause or authorize shipboard fumigation contrary to the rules in this part.

              § 147A.6
              Right of appeal.
              Any person directly affected by a decision or action taken under this part, by or on behalf of the Coast Guard, may appeal therefrom in accordance with subpart 1.03 of this chapter.
              [CGD 88-033, 54 FR 50381, Dec. 6, 1989]

              § 147A.7
              Definitions.
              As used in this part:
              (a) Qualified person means a person who has experience with the particular fumigant or knowledge of its properties and is familiar with fumigant detection equipment and procedures, or an applicator who is certified by the Environmental Protection Agency if his certification covers the fumigant that is used.
              (b) Fumigant means a substance or mixture of substances that is a gas or is rapidly or progressively transformed to the gaseous state though some nongaseous or particulate matter may remain in the space that is fumigated.
              (c) Fumigation means the application of a fumigant on board a vessel to a specific treatment space.

              § 147A.9
              Persons in charge of fumigation and the vessel; designation.
              (a) The person, including any individual, firm, association, partnership, or corporation, that is conducting a fumigation operation shall designate a person in charge of fumigation for each operation.
              (b) The operator of each vessel shall designate a person in charge of the vessel for each fumigation operation.

              § 147A.10
              Notice to Captain of the Port.
              Unless otherwise authorized by the Captain of the Port, at least 24 hours before fumigation the operator of the vessel shall notify the Coast Guard Captain of the Port, for the area where the vessel is to be fumigated, of the time and place of the fumigation, and the name of the vessel that is to be fumigated.

            Before Fumigation

              § 147A.11
              Person in charge of fumigation; before fumigation.
              (a) The person in charge of fumigation shall notify the person in charge of the vessel of:
              (1) The space that is to be fumigated;
              (2) The name, address, and emergency telephone number of the fumigation company;
              (3) The dates and times of fumigation;
              (4) The characteristics of the fumigant;
              (5) The spaces that are determined to be safe for occupancy paragraph (b)(1)(i) of this section;
              (6) The maximum allowable concentration of fumigant in spaces, if any, that are determined to be safe for occupancy under paragraph (b)(1)(i) of this section;
              (7) The symptoms of exposure to the fumigant; and
              (8) Emergency first aid treatment for exposure to the fumigant.
              (b) The person in charge of fumigation shall ensure that:
              (1) A marine chemist or other qualified person who has knowledge of and experience in shipboard fumigation evaluates the vessel's construction and configuration and determines:
              (i) Which spaces, if any, are safe for occupancy during fumigation; and
              (ii) The intervals that inspections must be made under § 147A.21(a)(1);

              (2) No persons or domestic animals are in the space that is to be fumigated or the spaces that are designated as unsafe for occupancy under paragraph (b)(1)(i) of this section;
              (3) There is proper and secure sealing to confine the fumigant to the space that is to be fumigated, including blanking off and sealing any ventilation ducts and smoke detectors;
              (4) The personal protection and fumigation detection equipment for the fumigant that is to be used is on board the vessel;
              (5) Warning signs are:
              (i) Posted upon all gangplanks, ladders, and other points of access to the vessel;
              (ii) Posted on all entrances to the spaces that are designated as unsafe for occupancy under paragraph (b)(1)(i) of this section; and

              (iii) In accordance with 49 CFR 173.9(c) or section 8.10 of the General Introduction of the International Maritime Dangerous Goods Code. The word “unit” on the warning sign may be replaced with “vessel,” “barge,” “hold,” or “space,” as appropriate.
              (6) Watchmen are stationed at all entrances to:
              (i) Spaces that are not determined to be safe for occupancy under paragraph (b)(1)(i) of this section; or
              (ii) The vessel, if no spaces are determined to be safe for occupancy under paragraph (b)(1)(i) of this section.
              [CGD 74-144, 39 FR 32998, Sept. 13, 1974; 39 FR 37771, Oct. 24, 19745; CGD 96-041, 61 FR 50731, Sept. 27, 1996; CGD 97-057, 62 FR 51048, Sept. 30, 1997]

              § 147A.13
              Person in charge of the vessel; before fumigation.
              (a) After notice under § 147A.11 (a)(5), the person in charge of the vessel shall notify the crew and all other persons on board the vessel who are not participating in the fumigation of the spaces that are determined to be safe for occupancy under § 147A.11(b)(1)(i).
              (b) If no spaces are determined to be safe for occupancy under § 147A.11 (b)(1)(i), the person in charge of the vessel shall ensure that the crew and all persons who are not participating in the fumigation leave the vessel and remain away during fumigation.

            During Fumigation

              § 147A.21
              Person in charge of fumigation; during fumigation.
              (a) Until ventilation begins, or until the vessel leaves port, the person in charge of fumigation shall ensure that a qualified person inspects the vessel as follows:
              (1) He must use detection equipment for the fumigant that is used to ensure that the fumigant is confined to:
              (i) The space that is fumigated, if partial occupancy is allowed under § 147A.11(b)(1)(i); or
              (ii) The vessel, if no space is determined to be safe for occupancy under § 147A.11(b)(1)(i).
              (2) He must make inspections at the intervals that are determined to be necessary by the marine chemist or qualified person under § 147A.11 (b)(1)(ii).
              (b) If leakage occurs, the person in charge of fumigation shall:
              (1) Notify the person in charge of the vessel that there is leakage;
              (2) Ensure that all necessary measures are taken for the health and safety of any person; and
              (3) Notify the person in charge of the vessel when there is no danger to the health and safety of any person.
              (c) After the exposure period, if the vessel is in port, the person in charge of fumigation shall ensure that fumigators or other qualified persons ventilate the space that is fumigated as follows:
              (1) Hatch covers and vent seals must be removed, other routes of access to the atmosphere must be opened, and if necessary, mechanical ventilation must be used.
              (2) Personal protection equipment that is appropriate for the fumigant that is used must be worn.
              (d) If ventilation is completed before the vessel leaves port, the person in charge of fumigation shall:

              (1) Ensure that a qualified person, who is wearing the personal protection equipment for the fumigant that is used if remote detection equipment is not used, tests the space that is fumigated and determines if there is any danger to the health and safety of any person, including a danger from fumigant that may be retained in bagged, baled, or other absorbent cargo;
              (2) Notify the person in charge of the vessel of this determination; and
              (3) If it is determined that there is a danger:
              (i) Ensure that all measures are taken that are necessary for the health and safety of all persons; and
              (ii) Notify the person in charge of the vessel when there is no danger to the health and safety of any person.

              § 147A.23
              Person in charge of vessel; during fumigation.
              (a) The person in charge of the vessel shall ensure that the crew and all other persons on board the vessel who are not participating in the fumigation restrict their movement during fumigation to the spaces that are determined to be safe for occupancy under § 147A.11(b)(1)(i).
              (b) The person in charge of the vessel shall ensure that the crew and all other persons who are not participating in the fumigation follow any instructions of the person in charge of fumigation that are issued under § 147A.21(b)(2) or (d)(3)(i) and that the vessel does not leave port if he is notified under:
              (1) Section 147A.21(b)(1) that there is leakage, unless the person in charge of fumigation notifies him under § 147A.21(b)(3) of this subpart that there is no danger; or
              (2) Section 147A.21(d)(2) that there is a danger after ventilation, unless the person in charge of the fumigation notifies him under § 147A.21(d)(3)(ii) that there is no danger.
              (c) If fumigation is not completed before the vessel leaves port, the person in charge of the vessel shall ensure that personal protection and fumigant detection equipment for the fumigant that is used is on board the vessel.
              (d) If the vessel leaves port before fumigation is completed, the person in charge of the vessel shall ensure that a qualified person makes periodic inspections until ventilation is completed and this person shall use detection equipment for the fumigant that is used to determine if:
              (1) There is leakage of fumigant; or
              (2) There is a concentration of fumigant that is a danger to the health and safety of any person.
              (e) If the qualified person determines under paragraph (d) of this section that there is leakage or a concentration of fumigant that is a danger to the health and safety of any person, the person in charge of the vessel shall take all measures that are, in his discretion, necessary to ensure health and safety of all persons who are on board the vessel. If the danger is due to leakage, he shall also ensure that qualified persons immediately ventilate in accordance with paragraphs (c)(1) and (2) of § 147A.21.
              (f) If the vessel leaves port during the exposure period, the person in charge of the vessel shall ensure that the space that is fumigated is ventilated by qualified persons after the exposure period in accordance with paragraphs (c) (1) and (2) of § 147A.21.
              (g) If ventilation is completed after the vessel leaves port, the person in charge of the vessel shall ensure that a qualified person, who is wearing the personal protection equipment for the fumigant that is used if remote detection equipment is not used, tests the space that is fumigated to determine if there is a danger to the health and safety of any person, including a danger from fumigant that may be retained in bagged, baled, or other absorbent cargo. If the qualified person determines that there is a danger, the person in charge of the vessel shall take all measures that are, in his discretion, necessary to ensure the health and safety of all persons who are on board the vessel.

              § 147A.25
              Entry.
              (a) No person may enter the spaces that immediately adjoin the space that is fumigated during fumigation unless entry is for emergency purposes or the space is tested and declared safe for human occupancy by a marine chemist or other qualified person and is inspected under § 147A.21(a)(2) or § 147A.23(d).
              (b) If entry is made for emergency purposes:

              (1) No person may enter the space that is fumigated or any adjoining spaces during fumigation unless he wears the personal protection equipment for the fumigant that is in use;
              (2) No person may enter the space that is fumigated unless the entry is made by a two person team; and
              (3) No person may enter the space that is fumigated unless he wears a lifeline and safety harness and each life-line is tended by a person who is outside the space and who is wearing the personal protection equipment for the fumigant that is in use.

            After Ventilation

              § 147A.31
              Removal of fumigation material and warning signs.
              After ventilation is completed and a marine chemist or other qualified person determines that there is no danger to the health and safety of any person under § 147A.21(d) or § 147A.23(g), the person in charge of fumigation, or, if the vessel has left port, the person in charge of the vessel, shall ensure that all warning signs are removed and fumigation containers and materials are removed and disposed of in accordance with the manufacturer's recommendations.

            Special Requirements for Flammable Fumigants

              § 147A.41
              Person in charge of fumigation; flammable fumigants.
              (a) The person in charge of fumigation shall ensure that:
              (1) Before the space that is to be fumigated is sealed, it is thoroughly cleaned, and all refuse, oily waste, and other combustible material is removed;
              (2) Before fumigation, all fire fighting equipment, including sprinklers and fire pumps, is in operating condition; and
              (3) Before and during fumigation, electrical circuits that are in the space that is fumigated are de-energized.
              (b) [Reserved]

              § 147A.43
              Other sources of ignition; flammable fumigants.
              While the space that is fumigated is being sealed or during fumigation, no person may use matches, smoking materials, fires, open flames, or any other source of ignition in any spaces that are not determined to be safe for occupancy under § 147A.11(b)(1)(i).

          Pt. 148
          PART 148—CARRIAGE OF BULK SOLID MATERIALS THAT REQUIRE SPECIAL HANDLING

              Subpart A—General
              Sec.
              148.1
              Purpose and applicability.
              148.2
              Responsibility and compliance.
              148.3
              Definitions.
              148.5
              Alternative procedures.
              148.7
              OMB control numbers assigned under the Paperwork Reduction Act.
              148.8
              Incorporation by reference.
              148.9
              Right of appeal.
              148.10
              Permitted materials.
              148.11
              Hazardous or potentially dangerous characteristics.
              148.12
              Assignment and certification.

              Subpart B—Special Permits
              148.15
              Petition for a special permit.
              148.20
              Deadlines for submission of petition and related requests.
              148.21
              Necessary information.
              148.25
              Activities covered by a special permit.
              148.26
              Standard conditions for special permits.
              148.30
              Records of special permits issued.

              Subpart C—Minimum Transportation Requirements
              148.50
              Cargoes subject to this subpart.
              148.51
              Temperature readings.
              148.55
              International shipments.
              148.60
              Shipping papers.
              148.61
              Emergency response information.
              148.62
              Location of shipping papers and emergency response information.
              148.70
              Dangerous cargo manifest; general.
              148.71
              Information included in the dangerous cargo manifest.
              148.72
              Dangerous cargo manifest; exceptions.
              148.80
              Supervision of cargo transfer.
              148.85
              Required equipment for confined spaces.
              148.86
              Confined space entry.
              148.90
              Preparations before loading.
              148.100
              Log book entries.
              148.110
              Procedures followed after unloading.
              148.115
              Report of incidents.

              Subpart D—Stowage and Segregation
              148.120
              Stowage and segregation requirements.
              148.125
              Stowage and segregation for materials of Class 4.1.
              148.130
              Stowage and segregation for materials of Class 4.2.
              148.135

              Stowage and segregation for materials of Class 4.3.

              148.140
              Stowage and segregation for materials of Class 5.1.
              148.145
              Stowage and segregation for materials of Class 7.
              148.150
              Stowage and segregation for materials of Class 9.
              148.155
              Stowage and segregation for potentially dangerous materials.

              Subpart E—Special Requirements for Certain Materials
              148.200
              Purpose.
              148.205
              Ammonium nitrate and ammonium nitrate fertilizers.
              148.220
              Ammonium nitrate-phosphate fertilizers.
              148.225
              Calcined pyrites (pyritic ash, fly ash).
              148.227
              Calcium nitrate fertilizers.
              148.230
              Calcium oxide (lime, unslaked).
              148.235
              Castor beans.
              148.240
              Coal.
              148.242
              Copra.
              148.245
              Direct reduced iron (DRI); lumps, pellets, and cold-molded briquettes.
              148.250
              Direct reduced iron (DRI); hot-molded briquettes.
              148.255
              Ferrosilicon, aluminum ferrosilicon, and aluminum silicon containing more than 30% but less than 90% silicon.
              148.260
              Ferrous metal.
              148.265
              Fish meal or fish scrap.
              148.270
              Hazardous substances.
              148.275
              Iron oxide, spent; iron sponge, spent.
              148.280
              Magnesia, unslaked (lightburned magnesia, calcined magnesite, caustic calcined magnesite).
              148.285
              Metal sulfide concentrates.
              148.290
              Peat moss.
              148.295
              Petroleum coke, calcined or uncalcined, at 55 °C (131 °F) or above.
              148.300
              Radioactive materials.
              148.310
              Seed cake.
              148.315
              Sulfur.
              148.320
              Tankage; garbage tankage; rough ammonia tankage; or tankage fertilizer.
              148.325
              Wood chips; wood pellets; wood pulp pellets.
              148.330
              Zinc ashes; zinc dross; zinc residues; zinc skimmings.

              Subpart F—Additional Special Requirements
              148.400
              Applicability.
              148.405
              Sources of ignition.
              148.407
              Smoking.
              148.410
              Fire hoses.
              148.415
              Toxic gas analyzers.
              148.420
              Flammable gas analyzers.
              148.435
              Electrical circuits in cargo holds.
              148.445
              Adjacent spaces.
              148.450
              Cargoes subject to liquefaction.

            Authority:
            33 U.S.C. 1602; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; 46 U.S.C. 3306, 5111; 49 U.S.C. 5103; Department of Homeland Security Delegation No. 0170.1.

            Source:
            75 FR 64591, Oct. 19, 2010, unless otherwise noted.

            Editorial Note:
            Nomenclature changes to part 148 appear by USCG-2012-0832, 77 FR 59783, Oct. 1, 2012.

            Subpart A—General

              § 148.1
              Purpose and applicability.
              (a) This part prescribes special handling procedures for certain solid materials that present hazards when transported in bulk by vessel.
              (b) Except as noted in paragraph (c) of this section, this part applies to all domestic and foreign vessels in the navigable waters of the United States that transport bulk solid materials requiring special handling.
              (c) This part does not apply to an unmanned barge on a domestic voyage carrying a Potentially Dangerous Material (PDM) found in Table 148.10 of this part. All barges on international voyages must follow the requirements for PDM.

              (d) The regulations in this part have preemptive impact over State law on the same subject. The Coast Guard has determined, after considering the factors developed by the Supreme Court in U.S. v. Locke, 529 U.S. 89 (2000), that in directing the Secretary to regulate the safe transportation of hazardous material and the safety of individuals and property on board vessels subject to inspection, as well as the provision of loading information, Congress intended to preempt the field of safety standards for solid materials requiring special handling when transported in bulk on vessels.

              § 148.2
              Responsibility and compliance.
              Each master of a vessel, person in charge of a barge, owner, operator, shipper, charterer, or agent must ensure compliance with this part. These persons are also responsible for communicating requirements to every person performing any function covered by this part.

              § 148.3
              Definitions.
              As used in this part—

                A-60 class division means a division as defined in § 32.57-5 of this chapter.

                Adjacent space means any enclosed space on a vessel, such as a cargo hold, cargo compartment, accommodation space, working space, storeroom, passageway, or tunnel, that shares a common bulkhead or deck with a hatch, door, scuttle, cable fitting or other penetration, with a cargo hold or compartment containing a material listed in Table 148.10 of this part.

                Away from means a horizontal separation of at least 3 meters (10 feet) projected vertically is maintained between incompatible materials carried in the same hold or on deck.

                Bulk applies to any solid material, consisting of a combination of particles, granules, or any larger pieces of material generally uniform in composition, that is loaded directly into the cargo spaces of a vessel without any intermediate form of containment.

                Bulk Cargo Shipping Name or BCSN identifies a bulk solid material during transport by sea. When a cargo is listed in this Part, the BCSN of the cargo is identified by Roman type and is listed in Column 1 of Table 148.10 of this part. When the cargo is a hazardous material, as defined in 49 CFR part 173, the proper shipping name of that material is the BCSN.

                Cold-molded briquettes are briquettes of direct reduced iron (DRI) that have been molded at a temperature of under 650 °C (1,202 °F) or that have a density of under 5.0 g/cm3;.

                Commandant (CG-ENG-5) means the Chief, Hazardous Materials Division of the Office of Design and Engineering Systems. The mailing address is: Commandant (CG-ENG-5), Attn: Hazardous Materials Division, U.S. Coast Guard Stop 7509, 2703 Martin Luther King Jr. Avenue SE., Washington, DC 20593-7509; telephone 202-372-1420 or email hazmatstandards@uscg.mil.

                Compartment means any space on a vessel that is enclosed by the vessel's decks and its sides or permanent steel bulkheads.

                Competent authority means a national agency responsible under its national law for the control or regulation of a particular aspect of the transportation of hazardous materials.

                Confined space means a cargo hold containing a material listed in Table 148.10 of this part or an adjacent space not designed for human occupancy.

                Domestic voyage means transportation between places within the United States other than through a foreign country.

                Hazard class means the category of hazard assigned to a material under this part and 49 CFR parts 171 through 173.
              Hazard Class Definitions

                Hazard Classes Used in This Part Are Defined in the Following Sections of Title 49

                  Class No.
                  Division No. (if any)
                  Description
                  Reference(49 CFR)

                  1
                  1.1, 1.2, 1.3, 1.4, 1.5, 1.6
                  Explosives
                  § 173.50

                  2
                  2.1, 2.2, 2.3
                  Flammable Gas, Non-Flammable Compressed Gas, Poisonous Gas
                  § 173.115

                  3

                  Flammable and Combustible Liquid
                  § 173.120

                  4
                  4.1, 4.2, 4.3
                  Flammable Solid, Spontaneously Combustible Material, Dangerous When Wet Material
                  § 173.124

                  5
                  5.1
                  Oxidizer
                  § 173.127

                  5
                  5.2
                  Organic Peroxide
                  § 173.128

                  6
                  6.1
                  Poisonous Materials
                  § 173.132

                  6
                  6.2
                  Infectious Substance
                  § 173.134

                  7

                  Radioactive Material
                  § 173.403

                  8

                  Corrosive Material
                  § 173.136

                  9

                  Miscellaneous Hazardous Material
                  § 173.140

                Hazardous substance is a hazardous substance as defined in 49 CFR 171.8.

                Hold means a compartment below deck that is used exclusively for the stowage of cargo.

                Hot-molded briquettes are briquettes of DRI that have been molded at a temperature of 650 °C (1,202 °F) or higher, and that have a density of 5.0 g/cm3 (312 lb/ft3) or greater.

                IMSBC Code means the English version of the “International Maritime Solid Bulk Cargoes Code” published by the International Maritime Organization (incorporated by reference, see § 148.8).

                Incompatible materials means two materials whose stowage together may result in undue hazards in the case of leakage, spillage, or other accident.

                International voyage means voyages—
              (1) Between any place in the United States and any place in a foreign country;
              (2) Between places in the United States through a foreign country; or
              (3) Between places in one or more foreign countries through the United States.

                Lower flammability limit or LFL means the lowest concentration of a material or gas that will propagate a flame. The LFL is usually expressed as a percent by volume of a material or gas in air.

                Master means the officer having command of a vessel. The functions assigned to the master in this part may also be performed by a representative of the master or by a person in charge of a barge.

                Material safety data sheet or MSDS is as defined in 29 CFR 1910.1200.

                Person in charge of a barge means an individual designated by the owner or operator of a barge to have charge of the barge.

                Potentially Dangerous Material or PDM means a material that does not fall into a particular hazard class but can present a danger when carried in bulk aboard a vessel. The dangers often result from the material's tendency to self-heat or cause oxygen depletion. Materials that present a potential danger due solely to their tendency to shift in the cargo hold are not PDMs. For international shipments prepared in accordance with the IMSBC Code (incorporated by reference, see § 148.8), equivalent terminology to PDM is Material Hazardous only in Bulk (MHB).

                Readily combustible material means a material that may not be a hazardous material but that can easily ignite and support combustion. Examples are wood, straw, vegetable fibers, and products made from these materials, and coal lubricants and oils. The term does not include packaging material or dunnage.

                Reportable quantity or RQ means the quantity of a hazardous substance spilled or released that requires a report to the National Response Center. The specific RQs for each hazardous substance are available in 49 CFR 172.101, Appendix A.

                Responsible person means a knowledgeable person who the master of a vessel or owner or operator of a barge makes responsible for all decisions relating to his or her specific task.

                Seed cake means the residue remaining after vegetable oil has been extracted by a solvent or mechanical process from oil-bearing seeds, such as coconuts, cotton seed, peanuts, and linseed.

                Shipper means any person by whom, or in whose name, or on whose behalf, a contract of carriage of goods by sea has been concluded with a carrier; or any person by whom or in whose name, or on whose behalf, the goods are actually delivered to the carrier in relation to the contract of carriage by sea.

                Shipping paper means a shipping order, bill of lading, manifest, or other shipping document serving a similar purpose.

                Stowage factor means the volume in cubic meters of 1,000 kilograms (0.984 long tons) of a bulk solid material.

                Threshold limit value or TLV means the time-weighted average concentration of a material that the average worker can be exposed to over a normal eight-hour working day, day after day, without adverse effect. This is a trademark term of the American Conference of Governmental Industrial Hygienists (ACGIH).

                Transported includes the various operations associated with cargo transportation, such as loading, off-loading, handling, stowing, carrying, and conveying.

                Trimming means any leveling of a cargo within a cargo hold or compartment, either partial or total.

                Tripartite agreement means an agreement between the national administrations of the port of loading, the port of discharge, and the flag state of the vessel, on the conditions of carriage of a cargo.

                Ventilation means exchange of air from outside to inside a cargo space and includes the following types:
              (1) Continuous ventilation means ventilation that is operating at all times. Continuous ventilation may be either natural or mechanical;
              (2) Mechanical ventilation means power-generated ventilation;
              (3) Natural ventilation means ventilation that is not power-generated; and
              (4) Surface ventilation means ventilation of the space above the cargo. Surface ventilation may be either natural or mechanical.

                Vessel means a cargo ship or barge.
              [75 FR 64591, Oct. 19, 2010, as amended by USCG-2013-0671, 78 FR 60154, Sept. 30, 2013]

              § 148.5
              Alternative procedures.
              (a) The Commandant (CG-ENG-5) may authorize the use of an alternative procedure, including exemptions to the IMSBC Code (incorporated by reference, see § 148.8), in place of any requirement of this part if it is demonstrated to the satisfaction of the Coast Guard that the requirement is impracticable or unnecessary and that an equivalent level of safety can be maintained.
              (b) Each request for authorization of an alternative procedure must—
              (1) Be in writing;
              (2) Name the requirement for which the alternative is requested; and
              (3) Contain a detailed explanation of—
              (i) Why the requirement is impractical or unnecessary; and
              (ii) How an equivalent level of safety will be maintained.

              § 148.7
              OMB control numbers assigned under the Paperwork Reduction Act.
              The information collection requirements in this part are approved by the Office of Management and Budget, and assigned OMB control number 1625-0025.

              § 148.8
              Incorporation by reference.

              (a) Certain material is incorporated by reference into this part with the approval of the Director of the Federal Register under 5 U.S.C. 552(a) and 1 CFR part 51. To enforce any edition other than that specified in this section, the Coast Guard must publish notice of change in the Federal Register and the material must be available to the public. All approved material is available for inspection at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030 or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. Also, it is available for inspection at the Coast Guard Headquarters. Contact Commandant (CG-ENG-5), Attn: Hazardous Materials Division, U.S. Coast Guard Stop 7509, 2703 Martin Luther King Jr. Avenue SE., Washington, DC 20593-7509. The material is also available from the sources listed in paragraphs (b) and (c) of this section.

              (b) International Maritime Organization (IMO), 4 Albert Embankment, London SE1 7SR, United Kingdom, + 44 (0)20 7735 7611, http://www.imo.org.

              (1) International Maritime Solid Bulk Cargoes Code and Supplement, 2009 edition (“IMSBC Code”), incorporation by reference, excluding supplemental materials, approved for §§ 148.3; 148.5(a); 148.15(d); 148.55(b); 148.205(b); 148.220(b) and (c); 148.240(h); 148.450(a), (d), and (g).
              (2) [Reserved]

              (c) United Nations Publications, 2 United Nations Plaza, Room DC2-853, Dept. C089, New York, NY 10017, (800) 253-9646, http://unp.un.org.

              (1) Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, Fifth revised edition (2009) (“UN Manual of Tests and Criteria”), incorporation by reference approved for §§ 148.205(b); 148.220(b) and (c).
              (2) [Reserved]
              [75 FR 64591, Oct. 19, 2010, as amended by USCG-2013-0671, 78 FR 60154, Sept. 30, 2013]

              § 148.9
              Right of appeal.
              Any person directly affected by enforcement of this part by or on behalf of the Coast Guard may appeal the decision or action under Subpart 1.03 of this chapter.

              § 148.10
              Permitted materials.

              (a) A material listed in Table 148.10 of this section may be transported as a bulk solid cargo on a vessel if it is carried according to this part. A material that is not listed in Table 148.10 of this section, but which is hazardous or a Potentially Dangerous Material (PDM), requires a Special Permit under § 148.15 of this part to be transported on the navigable waters of the United States.
              (b) For each listed material, Table 148.10 identifies the hazard class and gives the BCSN or directs the user to the preferred BCSN. In addition, the table lists specific hazardous or potentially dangerous characteristics associated with each material and specifies or references detailed special requirements in this part pertaining to the stowage or transport of specific bulk solid materials. The column descriptions for Table 148.10 are defined as follows:
              (1) Column 1: Bulk Solid Material Descriptions and Bulk Cargo Shipping Names (BCSN). Column 1 lists the bulk solid material descriptions and the BCSNs of materials designated as hazardous or PDM. BCSNs are limited to those shown in Roman type. Trade names and additional descriptive text are shown in italics.
              (2) Column 2: I.D. Number. Column 2 lists the identification number assigned to each BCSN associated with a hazardous material. Those preceded by the letters “UN” are associated with BCSNs considered appropriate for international voyages as well as domestic voyages. Those preceded by the letters “NA” are associated with BCSNs not recognized for international voyages, except to and from Canada.
              (3) Column 3: Hazard Class or Division. Column 3 designates the hazard class or division, or PDM, as appropriate, corresponding to each BCSN.
              (4) Column 4: References. Column 4 refers the user to the preferred BCSN corresponding to bulk solid material descriptions listed in Column 1.
              (5) Column 5: Hazardous or Potentially Dangerous Characteristics. Column 5 specifies codes for hazardous or potentially dangerous characteristics applicable to specific hazardous materials or PDMs. Refer to § 148.11 of this part for the meaning of each code.
              (6) Column 6: Other Characteristics. Column 6 contains other pertinent characteristics applicable to specific bulk solid materials listed in Column 1.
              (7) Column 7: Special Requirements. Column 7 specifies the applicable sections of Part 148 of this chapter that contain detailed special requirements pertaining to stowage and/or transportation of specific bulk solid materials in this part. This column is completed in a manner which indicates that “§ 148.” precedes the designated numerical entry.
              (c) The following requirements apply to combinations of bulk solids carried at the same time and in the same compartment or hold:

                    Combinations of bulk solid materials

                    Requirements

                  (1) Material listed in Table 148.10 carried with any other non-hazardous bulk solid material
                  Requirements specified in Table 148.10 for the listed material.

                  (2) Material carried under Special Permit with any non-hazardous bulk solid material
                  Requirements specified in the Special Permit.

                  (3) Two or more materials listed in Table 148.10
                  Must apply for a Special Permit.

              (d) An owner, agent, master, operator, or person in charge of a vessel or barge carrying materials listed in Table 148.10 of this section must follow the requirements contained in 46 CFR part 4 for providing notice and reporting of marine casualties and retaining voyage records.

                Table 148.10—Bulk Solid Hazardous Materials Table

                  Bulk solid material descriptions and bulk cargo shipping names
                  I.D. No.
                  Hazard class ordivision

                  References
                  Hazardous or potentially dangerous characteristics (see § 148.11)
                  Other characteristics
                  Specialrequirements (§ 148.* * *)

                  (1)
                  (2)
                  (3)
                  (4)
                  (5)
                  (6)
                  (7)

                  Aluminum Ferrosilicon Powder
                  UN1395
                  4.3, 6.1

                  2, 3
                  Fine powder or briquettes
                  135, 255, 405(b), 407, 415(a) & (e), 420(b), 445

                  Aluminum Nitrate
                  UN1438
                  5.1

                  4
                  Colorless or white crystals
                  140

                  Aluminum Silicon Powder, Uncoated
                  UN1398
                  4.3

                  2, 3

                  135, 255, 405(b), 407 415(a) & (e), 420(b), 445

                  Aluminum Smelting By-products or Aluminum Re-melting Byproducts
                  UN3170
                  4.3

                  1, 2, 3
                  Includes aluminum dross, residues, spent cathodes, spent potliner, and skimmings
                  135, 405(b), 420(b), 445

                  Ammonium Nitrate
                  UN1942
                  5.1

                  5, 27

                  140, 205, 405(a), 407, 410

                  Ammonium Nitrate Based Fertilizer
                  UN2067
                  5.1

                  5, 27

                  140, 205, 405(a), 407, 410

                  Ammonium Nitrate Based Fertilizer
                  UN2071
                  9

                  6
                  Nitrogen, Phosphate, or Potash
                  140, 220, 405(a), 407

                  Barium Nitrate
                  UN1466
                  5.1, 6.1

                  4, 7

                  140

                  Brown Coal Briquettes

                  PDM

                  11, 12, 14, 25

                  155, 240, 405(b), 407, 415(b), 420(a), 445

                    Calcium fluoride

                    See Fluorospar

                  Calcium Nitrate
                  UN1454
                  5.1

                  4
                  White crystals or powder
                  140, 227

                    Calcium Oxide

                    See Lime, Unslaked

                  Castor Beans
                  UN2969
                  9

                  10
                  Whole beans
                  150, 235

                  Charcoal

                  PDM

                  1, 11, 12
                  Screenings, briquettes
                  155

                    Chili Saltpeter

                    See Sodium Nitrate

                    Chilean Natural Nitrate

                    See Sodium Nitrate

                  Coal

                  PDM

                  11, 12, 13, 14, 25

                  155, 240, 405(b), 407, 415(b), 420(a) & (c), 445, 450

                  Copra
                  UN1363
                  4.2

                  11, 12
                  Dry
                  130, 242

                  Direct reduced iron (A) with not more than 5% fines

                  PDM

                  1, 2, 12
                  Hot-molded briquettes
                  155, 250, 420(b)

                  Direct reduced iron (B) with not more than 5% fines

                  PDM

                  1, 2, 12
                  Lumps, pellets, and cold-molded briquettes
                  155, 245, 405(b), 407, 420(b), 445

                  Environmentally Hazardous Substances, Solid, n.o.s.
                  UN3077
                  9
                  Hazardous substances listed in 40 CFR part 302
                  15

                  150, 270

                  Ferrophosphorous

                  PDM

                  2, 3
                  Including briquettes
                  155, 415(e), 445

                  Ferrosilicon with 30-90% silicon

                  UN1408
                  4.3, 6.1

                  2, 3

                  135, 255, 405(b), 407, 415(a) & (e), 420(b), 445

                  Ferrosilicon with 25%-30% silicon or 90% or more silicon

                  PDM

                  155, 255, 405(b), 407, 415 (a) & (e), 420(b), 445

                    Ferrous Sulfate

                  See Environmentally Hazardous Substances, Solid, n.o.s

                  Ferrous Metal Borings, Shavings, Turnings, or Cuttings
                  UN2793
                  4.2

                  11, 12

                  130, 260

                  Fish Meal Stabilized or Fish Scrap, Stabilized
                  UN2216
                  9

                  11, 12
                  Ground and pelletized (mixture), anti-oxidant treated
                  150, 265

                  Fluorospar

                  PDM

                  8, 24

                  155, 440(a), 450

                    Garbage Tankage

                    See Tankage

                  Iron Oxide, Spent or Iron Sponge, Spent
                  UN1376
                  4.2

                  3, 11, 12, 14

                  130, 275, 415(c), (d) & (f), 445

                    Iron Swarf

                    See Ferrous Metal Borings, Shavings, Turnings, or Cuttings

                  Lead Nitrate
                  UN1469
                  5.1, 6.1

                  4, 7, 22, 26

                  140, 270

                    Lignite

                    See Brown Coal Briquettes

                  Lime, Unslaked

                  PDM

                  1

                  155, 230

                  Linted Cotton Seed containing not more than 9% moisture and not more than 20.5% oil

                  PDM

                  11, 12

                  155

                  Magnesia, Unslaked

                  PDM

                  1
                  Lightburned magnesia, calcined magnesite
                  155, 280

                  Magnesium Nitrate
                  UN1474
                  5.1

                  4

                  140

                  Metal Sulfide Concentrates

                  PDM

                  8, 11, 12, 22, 24
                  Solid, finely divided sulfide concentrates of copper, iron, lead, nickel, zinc, or other metalliferous ores
                  155, 285, 450

                  Peat Moss with moisture content of more than 65% by weight

                  PDM

                  8, 12, 13, 14, 24
                  Fine to coarse fibrous structure
                  155, 290, 450

                    Pencil Pitch

                    See Pitch Prill

                  Petroleum Coke calcined or uncalcined at >55 °C (131 °F)

                  PDM

                  11

                  155, 295

                  Pitch Prill

                  PDM

                  14, 16

                  155

                  Potassium Nitrate
                  UN1486
                  5.1

                  4

                  140

                    Prilled Coal Tar

                    See Pitch Prill

                  Pyrites, Calcined

                  PDM

                  8, 9, 24
                  Fly ash
                  155, 225, 450

                    Pyritic ash

                    See Pyrites, Calcined

                    Quicklime

                    See Lime, Unslaked

                  Radioactive Material
                  UN2912
                  7

                  17
                  Low specific activity
                  145, 300

                  Radioactive Material
                  UN2913
                  7

                  17
                  Surface contaminated objects
                  145, 300

                    Rough Ammonia Tankage

                    See Tankage

                    Saltpeter

                    See Potassium Nitrate

                  Sawdust

                  PDM

                  12, 18

                  155, 405(a), 407

                  Seed Cake
                  UN1386
                  4.2

                  12, 19
                  Mechanically expelled or solvent extractions
                  130, 310

                  Seed Cake
                  UN2217
                  4.2

                  12, 19
                  Solvent extractions
                  130, 310

                  Silicomanganese with silicon content of 25% or more

                  PDM

                  2, 3, 12
                  With known hazard profile or known to evolve gases
                  155, 405(b), 407, 415(a) & (d), 420(b), 445

                  Sodium Nitrate
                  UN1498
                  5.1

                  4

                  140

                  Sodium Nitrate and Potassium Nitrate Mixture
                  UN1499
                  5.1

                  4
                  Mixtures prepared as fertilizer
                  140

                    Steel Swarf

                    See Ferrous Metal Borings, Shavings, Turnings, or Cuttings

                  Sulfur
                  UN1350
                  4.1

                  14, 20
                  Lumps or coarse-grained powder
                  125, 315, 405(a), 407, 435

                  Sulfur
                  NA1350
                  9

                  14, 20
                  Not subject to the requirements of this subchapter when formed into specific shapes (i.e., prills, granules, pellets, pastiles, or flakes)
                  125, 315, 405(a), 407, 435

                  Tankage

                  PDM

                  11

                  155, 320

                    Tankage Fertilizer

                    See Tankage

                  Vanadium Ore

                  PDM

                  21

                  155

                  Wood chips, Wood Pellets, Wood Pulp Pellets

                  PDM

                  12

                  155, 325

                  Zinc Ashes
                  UN1435
                  4.3

                  2, 3, 23
                  Includes zinc dross, residues, and skimmings
                  135, 330, 405(b), 407, 420(b), 435, 445

              § 148.11
              Hazardous or potentially dangerous characteristics.
              (a) General. When Column 5 refers to a code for a hazardous material or PDM, the meaning of that code is set forth in this section.
              (b) Table of Hazardous or Potentially Dangerous Characteristics.

                  Code
                  Hazardous or potentially dangerous characteristic

                  1
                  Contact with water may cause heating.

                  2
                  Contact with water may cause evolution of flammable gases, which may form explosive mixtures with air.

                  3
                  Contact with water may cause evolution of toxic gases.

                  4
                  If involved in a fire, will greatly intensify the burning of combustible materials.

                  5

                  A major fire aboard a vessel carrying this material may involve a risk of explosion in the event of contamination (e.g., by a fuel oil) or strong confinement. If heated strongly will decompose, giving off toxic gases that support combustion.

                  6
                  These mixtures may be subject to self-sustaining decomposition if heated. Decomposition, once initiated, may spread throughout the remainder, producing gases that are toxic.

                  7
                  Toxic if swallowed and by dust inhalation.

                  8
                  Harmful and irritating by dust inhalation.

                  9
                  Highly corrosive to steel.

                  10
                  Powerful allergen. Toxic by ingestion. Skin contact or inhalation of dust may cause severe irritation of skin, eyes, and mucous membranes in some people.

                  11
                  May be susceptible to spontaneous heating and ignition.

                  12
                  Liable to cause oxygen depletion in the cargo space.

                  13
                  Liable to emit methane gas which can form explosive mixtures with air.

                  14
                  Dust forms explosive mixtures with air.

                  15
                  May present substantial danger to the public health or welfare or the environment when released into the environment. Skin contact and dust inhalation should be avoided.

                  16
                  Combustible. Burns with dense black smoke. Dust may cause skin and eye irritation.

                  17
                  Radiation hazard from dust inhalation and contact with mucous membranes.

                  18
                  Susceptible to fire from sparks and open flames.

                  19
                  May self-heat slowly and, if wet or containing an excessive proportion of unoxidized oil, ignite spontaneously.

                  20
                  Fire may produce irritating or poisonous gases.

                  21
                  Dust may contain toxic constituents.

                  22
                  Lead nitrate and lead sulfide are hazardous substances; see code 15 of this table and § 148.270.

                  23
                  Hazardous substance when consisting of pieces having a diameter less than 100 micrometers (0.004 in.); see code 15 of this table and § 148.270.

                  24
                  Cargo subject to liquefaction.

                  25
                  Subject to liquefaction if average particle size of cargo is less than 10 mm (.394 in.).

                  26
                  This entry is considered a Marine Pollutant in accordance with 49 CFR 172.101 Appendix B.

                  27
                  This entry is considered a certain dangerous cargo in accordance with 33 CFR 160.202.

              [75 FR 64591, Oct. 19, 2010, as amended by USCG-2005-21869, 80 FR 5336, Jan. 30, 2015]

              § 148.12
              Assignment and certification.
              (a) The National Cargo Bureau is authorized to assist the Coast Guard in administering the provisions of this part by—
              (1) Inspecting vessels for suitability for loading solid materials in bulk;
              (2) Examining stowage of solid materials loaded in bulk on board vessels;
              (3) Making recommendations on stowage requirements applicable to the transportation of solid materials in bulk; and
              (4) Issuing certificates of loading that verify stowage of the solid material in bulk meets requirements of this part.
              (b) Certificates of loading from the National Cargo Bureau are accepted as evidence of compliance with bulk solid transport regulations.

            Subpart B—Special Permits

              § 148.15
              Petition for a special permit.
              (a) Each shipper who wishes to ship a bulk solid material not listed in Table 148.10 of this part must determine whether the material meets the definition of any hazard class, or the definition of a PDM, as those terms are defined in § 148.3 of this part.
              (b) If the material meets any of the definitions described in paragraph (a) of this section, the shipper then must submit a petition in writing to the Commandant (CG-ENG-5) for authorization to ship any hazardous material or PDM not listed in Table 148.10 of this part.

              (c) If the Commandant (CG-ENG-5) approves a petition for authorization, the Commandant (CG-ENG-5) issues the petitioner a Coast Guard special permit. The permit allows the material to be transported in bulk by vessel and outlines requirements for this transport.
              (d) A tripartite agreement developed in conjunction with the United States and in accordance with the IMSBC Code (incorporated by reference, see § 148.8) may be used in lieu of a special permit.

              § 148.20
              Deadlines for submission of petition and related requests.
              (a) A petition for a special permit must be submitted at least 45 days before the requested effective date. Requests for extension or renewal of an existing special permit must be submitted 20 days before the date of expiration.
              (b) Requests for extension or renewal must include the information required under § 148.21(a), (f), and (g) of this part.

              § 148.21
              Necessary information.
              Each petition for a special permit must contain at least the following:
              (a) A description of the material, including, if a hazardous material—
              (1) The proper shipping name from the table in 49 CFR 172.101;
              (2) The hazard class and division of the material; and
              (3) The identification number of the material.
              (b) A material safety data sheet (MSDS) for the material or—
              (1) The chemical name and any trade names or common names of the material;
              (2) The composition of the material, including the weight percent of each constituent;
              (3) Physical data, including color, odor, appearance, melting point, and solubility;
              (4) Fire and explosion data, including auto-ignition temperature, any unusual fire or explosion hazards, and any special fire fighting procedures;
              (5) Health hazards, including any dust inhalation hazards and any chronic health effects;
              (6) The threshold limit value (TLV) of the material or its major constituents, if available, and any relevant toxicity data;
              (7) Reactivity data, including any hazardous decomposition products and any incompatible materials; and
              (8) Special protection information, including ventilation requirements and personal protection equipment required.
              (c) Other potentially dangerous characteristics of the material not covered by paragraph (b) of this section, including—
              (1) Self-heating;
              (2) Depletion of oxygen in the cargo space;
              (3) Dust explosion; and
              (4) Liquefaction.
              (d) A detailed description of the proposed transportation operation, including—
              (1) The type of vessel proposed for water movements;
              (2) The expected loading and discharge ports, if known;
              (3) Procedures to be used for loading and unloading the material;
              (4) Precautions to be taken when handling the material; and
              (5) The expected temperature of the material at the time it will be loaded on the vessel.
              (e) Test results (if required under Subpart E of this part).
              (f) Previous approvals or permits.
              (g) Any relevant shipping or accident experience (or any other relevant transportation history by any mode of transport).

              § 148.25
              Activities covered by a special permit.
              (a) Each special permit covers any shipment of the permitted material by the shipper and also covers for each shipment—
              (1) Each transfer operation;
              (2) Each vessel involved in the shipment; and
              (3) Each individual involved in any cargo handling operation.
              (b) Each special permit is valid for a period determined by the Commandant (CG-ENG-5) and specified in the special permit. The period will not exceed 4 years and is subject to suspension or revocation before its expiration date.

              § 148.26
              Standard conditions for special permits.

              (a) Each special permit holder must comply with all the requirements of this part unless specifically exempted by the terms of the special permit.

              (b) Each special permit holder must provide a copy of the special permit and the information required in § 148.60 of this part to the master or person in charge of each vessel carrying the material.
              (c) The master of a vessel transporting a special permit material must ensure that a copy of the special permit is on board the vessel. The special permit must be kept with the dangerous cargo manifest if such a manifest is required by § 148.70 of this part.
              (d) The person in charge of a barge transporting any special permit material must ensure that a copy of the special permit is on board the tug or towing vessel. When the barge is moored, the special permit must be kept on the barge with the shipping papers as prescribed in § 148.62 of this part.

              § 148.30
              Records of special permits issued.
              A list of all special permits issued, and copies of each, are available from the Commandant (CG-ENG-5).

            Subpart C—Minimum Transportation Requirements

              § 148.50
              Cargoes subject to this subpart.
              The regulations in this subpart apply to each bulk shipment of—
              (a) A material listed in Table 148.10 of this part; and
              (b) Any solid material shipped under the terms of a Coast Guard special permit.

              § 148.51
              Temperature readings.
              When Subpart D of this part sets a temperature limit for loading or transporting a material, apply the following rules:
              (a) The temperature of the material must be measured 20 to 36 centimeters (8 to 14 inches) below the surface at 3 meter (10 foot) intervals over the length and width of the stockpile or cargo hold.
              (b) The temperature must be measured at every spot in the stockpile or cargo hold that shows evidence of heating.
              (c) Before loading or transporting the material, all temperatures measured must be below the temperature limit set in Subpart D of this part.

              § 148.55
              International shipments.
              (a) Importer's responsibility. Each person importing any bulk solid material requiring special handling into the United States must provide the shipper and the forwarding agent at the place of entry into the United States with timely and complete information as to the requirements of this part that will apply to the shipment of the material within the United States.
              (b) IMSBC Code. Notwithstanding the provisions of this part, a bulk solid material that is classed, described, stowed, and segregated in accordance with the IMSBC Code (incorporated by reference, see § 148.8), and otherwise conforms to the requirements of this section, may be offered and accepted for transportation and transported within the United States. The following conditions and limitations apply:
              (1) A bulk solid material that is listed in Table 148.10 of this part, but is not subject to the requirements of the IMSBC Code, may not be transported under the provisions of this section and is subject to the requirements of this part. Examples of such materials include environmentally hazardous substances, solid, n.o.s.
              (2) Zinc Ashes must conform to the requirements found in § 148.330 of this part.
              (3) Exemptions granted by other competent authorities in accordance with the IMSBC Code must be approved by the Commandant (CG-ENG-5) in accordance with § 148.5 of this part.
              (4) Tripartite agreements granted by other competent authorities in accordance with the IMSBC Code must be authorized for use in the United States by the Commandant (CG-ENG-5).

              § 148.60
              Shipping papers.

              The shipper of a material listed in Table 148.10 of this part must provide the master or his representative with appropriate information on the cargo in the form of a shipping paper, in English, prior to loading. Information on the shipping paper must include the following:

              (a) The appropriate BCSN. Secondary names may be used in addition to the BCSN;
              (b) The identification number, if applicable;
              (c) The hazard class of the material as listed in Table 148.10 of this part or on the Special Permit for the material;
              (d) The total quantity of the material to be transported;
              (e) The stowage factor;
              (f) The need for trimming and the trimming procedures, as necessary;
              (g) The likelihood of shifting, including angle of repose, if applicable;
              (h) A certificate on the moisture content of the cargo and its transportable moisture limit for cargoes that are subject to liquefaction;
              (i) Likelihood of formation of a wet base;
              (j) Toxic or flammable gases that may be generated by the cargo, if applicable;
              (k) Flammability, toxicity, corrosiveness, and propensity to oxygen depletion of the cargo, if applicable;
              (l) Self-heating properties of the cargo, if applicable;
              (m) Properties on emission of flammable gases in contact with water, if applicable;
              (n) Radioactive properties, if applicable;
              (o) The name and address of the U.S. shipper (consignor) or, if the shipment originates in a foreign country, the U.S. consignee.
              (p) A certification, signed by the shipper, that bears the following statement: “This is to certify that the above named material is properly named, prepared, and otherwise in proper condition for bulk shipment by vessel in accordance with the applicable regulations of the U.S. Coast Guard.”

              § 148.61
              Emergency response information.
              The shipper of a material listed in Table 148.10 of this part must provide the master or his representative with appropriate emergency response information. This information may be included on the shipping papers or in a separate document such as a material safety data sheet (MSDS). The information must include preliminary first aid measures and emergency procedures to be carried out in the event of an incident or fire involving the cargo.

              § 148.62
              Location of shipping papers and emergency response information.
              (a) The shipping paper and emergency response information required by §§ 148.60 and 148.61 of this part must be kept on board the vessel along with the dangerous cargo manifest required by § 148.70 of this part. When the shipment is by unmanned barge the shipping papers and emergency response information must be kept on the tug or towing vessel. When an unmanned barge is moored, the shipping paper and emergency response information must be on board the barge in a readily retrievable location.
              (b) Any written certification or statement from the shipper to the master of a vessel or to the person in charge of a barge must be on, or attached to, the shipping paper. See Subparts E and F of this part for required certifications.

              § 148.70
              Dangerous cargo manifest; general.
              (a) Except as provided in paragraph (b) of this section and in § 148.72 of this part, each vessel transporting materials listed in Table 148.10 of this part must have a dangerous cargo manifest on board.
              (b) This document must be kept in a designated holder on or near the vessel's bridge. When required for an unmanned barge, the document must be on board the tug or towing vessel.

              § 148.71
              Information included in the dangerous cargo manifest.
              The dangerous cargo manifest must include the following:
              (a) The name and official number of the vessel. If the vessel has no official number, the international radio call sign must be substituted;
              (b) The nationality of the vessel;
              (c) The name of the material as listed in Table 148.10 of this part;

              (d) The hold or cargo compartment in which the material is being transported;

              (e) The quantity of material loaded in each hold or cargo compartment; and
              (f) The signature of the master acknowledging that the manifest is correct, and the date of the signature.

              § 148.72
              Dangerous cargo manifest; exceptions.
              (a) No dangerous cargo manifest is required for—
              (1) Shipments by unmanned barge, except on an international voyage; and
              (2) Shipments of materials designated as potentially dangerous materials in Table 148.10 of this part.
              (b) When a dangerous cargo manifest is required for an unmanned barge on an international voyage, § 148.71(d) of this part does not apply, unless the barge has more than one cargo compartment.

              § 148.80
              Supervision of cargo transfer.
              The master must ensure that cargo transfer operations are supervised by a responsible person as defined in § 148.3 of this part.

              § 148.85
              Required equipment for confined spaces.
              When transporting a material that is listed in Table 148.10 of this part, each vessel, other than an unmanned barge, must have on board the following:
              (a) Equipment capable of measuring atmospheric oxygen. At least two members of the crew must be knowledgeable in the use of the equipment, which must be maintained in a condition ready for use and calibrated according to the manufacturer's instructions.
              (b) At least two self-contained, pressure-demand-type, air breathing apparatus approved by the Mine Safety and Health Administration (MSHA) or the National Institute for Occupational Safety and Health (NIOSH), each having at least a 30-minute air supply. Each foreign flag vessel must have on board at least two such apparatus that are approved by the flag state administration. The master must ensure that the breathing apparatus is used only by persons trained in its use.

              § 148.86
              Confined space entry.
              (a) Except in an emergency, no person may enter a confined space unless that space has been tested to ensure there is sufficient oxygen to support life. If the oxygen content is below 19.5 percent, the space must be ventilated and retested before entry.
              (b) In an emergency, a confined space may be entered by a trained person wearing self-contained breathing apparatus, suitable protective clothing as necessary, and a wire rope safety line tended by a trained person outside the hold or in an adjacent space. Emergency entry into a confined space must be supervised by a responsible person as defined in § 148.3 of this part.

              § 148.90
              Preparations before loading.
              Before loading any material listed in Table 148.10 of this part, in bulk on board a vessel, the following conditions must be met:
              (a) If a hold previously has contained any material required under Subpart D of this part to be segregated from the material to be loaded, the hold must be thoroughly cleaned of all residue of the previous cargoes.
              (b) If the material to be loaded is Class 4.1, 4.2, or 5.1, then all combustible materials must be removed from the hold. Examples of some combustible materials are residue of previous cargoes, loose debris, and dunnage. Permanent wooden battens or sheathing may remain in the hold unless forbidden by Subpart E of this part.
              (c) If the material to be loaded is classified as Class 4.3, or is subject to liquefaction, the hold and associated bilge must be as dry as practicable.

              § 148.100
              Log book entries.
              During the transport in bulk of a material listed in Table 148.10 of this part, the master must keep a record of each temperature measurement and each test for toxic or flammable gases required by this part. The date and time of each measurement and test must be recorded in the vessel's log.

              § 148.110
              Procedures followed after unloading.

              (a) After a material covered by this part has been unloaded from a vessel, each hold or cargo compartment must be thoroughly cleaned of all residue of such material unless the hold is to be reloaded with that same cargo.
              (b) When on U.S. territorial seas or inland waters, cargo associated wastes, cargo residue, and deck sweepings must be retained on the vessel and disposed of in accordance with 33 CFR parts 151.51 through 151.77.

              § 148.115
              Report of incidents.
              (a) When a fire or other hazardous condition occurs on a vessel transporting a material covered by this part, the master must notify the nearest Captain of the Port as soon as possible and comply with any instructions given.
              (b) Any incident or casualty occurring while transporting a material covered by this part must also be reported as required under 49 CFR 171.15, if applicable. A copy of the written report required under 49 CFR 171.16 must also be sent to the Commandant (CG-ENG-5), Attn: Hazardous Materials Division, U.S. Coast Guard Stop 7509, 2703 Martin Luther King Jr. Avenue SE., Washington, DC 20593-7509, at the earliest practicable moment.

              (c) Any release to the environment of a hazardous substance in a quantity equal to or in excess of its reportable quantity (RQ) must be reported immediately to the National Response Center at 800-424-8802 (toll free) or 202-267-2675; or online at www.nrc.uscg.mil..

              [75 FR 64591, Oct. 19, 2010, as amended by USCG-2013-0671, 78 FR 60154, Sept. 30, 2013]

            Subpart D—Stowage and Segregation

              § 148.120
              Stowage and segregation requirements.
              (a) Each material listed in Table 148.10 of this part must be segregated from incompatible materials in accordance with—
              (1) The requirements of Tables 148.120A and 148.120B of this section that pertain to the primary or subsidiary hazard class to which the materials belong. Whenever a subsidiary hazard may exist, the most stringent segregation requirement applies; and
              (2) Any specific requirements in Subpart D of this part.
              (b) Materials that are required to be separated during stowage must not be handled at the same time. Any residue from a material must be removed before a material required to be separated from it is loaded.
              (c) Definitions and application of segregation terms:
              (1) “Separated from” means located in different cargo compartments or holds when stowed under deck. If the intervening deck is resistant to fire and liquid, a vertical separation, i.e., in different cargo compartments, is acceptable as equivalent to this segregation.
              (2) “Separated by a complete cargo compartment or hold from” means either a vertical or horizontal separation, for example, by a complete cargo compartment or hold. If the intervening decks are not resistant to fire and liquid, only horizontal separation is acceptable.
              (3) “Separated longitudinally by an intervening complete cargo compartment or hold from” means that vertical separation alone does not meet this requirement.

                Table 148.120A—Segregation Between Incompatible Bulk Solid Cargoes

                  Bulk solid materials
                  Class
                  4.1
                  4.2
                  4.3
                  5.1
                  6.1
                  7
                  8
                  9/PDM

                  Flammable solid
                  4.1
                  X

                  Spontaneously combustible material
                  4.2
                  2
                  X

                  Dangerous when wet material
                  4.3
                  3
                  3
                  X

                  Oxidizer
                  5.1
                  3
                  3
                  3
                  X

                  Poisonous material
                  6.1
                  X
                  X
                  X
                  2
                  X

                  Radioactive material
                  7
                  2
                  2
                  2
                  2
                  2
                  X

                  Corrosive material
                  8
                  2
                  2
                  2
                  2
                  X
                  X
                  X

                  Miscellaneous hazardous material and potential dangerous material
                  9/PDM
                  X
                  X
                  X
                  X
                  X
                  2
                  X
                  X

                Numbers and symbols indicate the following terms as defined in § 148.3 of this part:
                2—“Separated from”.

                3—“Separated by a complete hold or compartment from”.
                X—No segregation required, except as specified in an applicable section of this subpart or Subpart E of this part.

                Table 148.120B—Segregation Between Bulk Solid Cargoes and Incompatible Packaged Cargoes

                  Packaged hazardous material
                  Bulk solid material
                  Class
                  4.1
                  4.2
                  4.3
                  5.1
                  6.1
                  7
                  8
                  9/PDM

                  Explosives
                  1.11.2
                    1.5

                  4
                  4
                  4
                  4
                  2
                  2
                  4
                  X

                  Explosives
                  1.31.6

                  3
                  3
                  4
                  4
                  2
                  2
                  2
                  X

                  Explosives
                  1.4
                  2
                  2
                  2
                  2
                  X
                  2
                  2
                  X

                  Flammable gas
                  2.1
                  2
                  2
                  1
                  2
                  X
                  2
                  2
                  X

                  Non-flammable compressed gas
                  2.2
                  2
                  2
                  X
                  X
                  X
                  2
                  1
                  X

                  Poisonous gas
                  2.3
                  2
                  2
                  X
                  X
                  X
                  2
                  1
                  X

                  Flammable liquid
                  3
                  2
                  2
                  2
                  2
                  X
                  2
                  1
                  X

                  Flammable solid
                  4.1
                  X
                  1
                  X
                  1
                  X
                  2
                  1
                  X

                  Spontaneously combustible material
                  4.2
                  1
                  X
                  1
                  2
                  1
                  2
                  1
                  X

                  Dangerous when wet material
                  4.3
                  X
                  1
                  X
                  2
                  X
                  2
                  1
                  X

                  Oxidizer
                  5.1
                  1
                  2
                  2
                  X
                  1
                  1
                  2
                  X

                  Organic peroxide
                  5.2
                  2
                  2
                  2
                  2
                  1
                  2
                  2
                  X

                  Poisonous material
                  6.1
                  X
                  1
                  X
                  1
                  X
                  X
                  X
                  X

                  Infectious substance
                  6.2
                  3
                  3
                  2
                  3
                  1
                  3
                  3
                  X

                  Radioactive material
                  7
                  2
                  2
                  2
                  1
                  X
                  X
                  2
                  X

                  Corrosive material
                  8
                  1
                  1
                  1
                  2
                  X
                  2
                  X
                  X

                  Miscellaneous hazardous material
                  9
                  X
                  X
                  X
                  X
                  X
                  X
                  X
                  X

                Numbers and symbols indicate the following terms as defined in § 148.3 of this part:
                1—“Away from”.
                2—“Separated from”.
                3—“Separated by a complete hold or compartment from”.
                4—“Separated longitudinally by an intervening complete compartment or hold from”.
                X—No segregation required, except as specified in an applicable section of this subpart or Subpart E of this part.

              § 148.125
              Stowage and segregation for materials of Class 4.1.
              (a) Class 4.1 materials listed in Table 148.10 of this part must—
              (1) Be kept as cool and dry as practical before loading;
              (2) Not be loaded or transferred between vessels during periods of rain or snow;
              (3) Be stowed separated from foodstuffs; and
              (4) Be stowed clear of sources of heat and ignition and protected from sparks and open flame.
              (b) Bulkheads between a hold containing a Class 4.1 material and incompatible materials must have cable and conduit penetrations sealed against the passage of gas and vapor.

              § 148.130
              Stowage and segregation for materials of Class 4.2.
              (a) Class 4.2 materials listed in Table 148.10 of this part must—
              (1) Be kept as cool and dry as practical before loading;
              (2) Not be loaded or transferred between vessels during periods of rain or snow;
              (3) Be stowed clear of sources of heat and ignition and protected from sparks and open flame; and
              (4) Except for copra and seed cake, be stowed separate from foodstuffs.
              (b) The bulkhead between a hold containing a Class 4.2 material and a hold containing a material not permitted to mix with Class 4.2 materials must have cable and conduit penetrations sealed against the passage of gas and vapor.

              § 148.135
              Stowage and segregation for materials of Class 4.3.
              (a) Class 4.3 materials listed in Table 148.10 of this part which, in contact with water, emit flammable gases, must—
              (1) Be kept as cool and dry as practical before loading;
              (2) Not be loaded or transferred between vessels during periods of rain or snow;
              (3) Be stowed separate from foodstuffs and all Class 8 liquids; and

              (4) Be stowed in a mechanically ventilated hold. Exhaust gases must not penetrate into accommodation, work or control spaces. Unmanned barges that have adequate natural ventilation need not have mechanical ventilation.
              (b) The bulkhead between a hold containing a Class 4.3 material and incompatible materials must have cable and conduit penetrations sealed against the passage of gas and vapor.

              § 148.140
              Stowage and segregation for materials of Class 5.1.
              (a) Class 5.1 materials listed in Table 148.10 of this part must—
              (1) Be kept as cool and dry as practical before loading;
              (2) Be stowed away from all sources of heat or ignition; and
              (3) Be stowed separate from foodstuffs and all readily combustible materials.
              (b) Special care must be taken to ensure that holds containing Class 5.1 materials are clean and, whenever practical, only noncombustible securing and protecting materials are used.
              (c) Class 5.1 materials must be prevented from entering bilges or other cargo holds.

              § 148.145
              Stowage and segregation for materials of Class 7.
              (a) Class 7 material listed in Table 148.10 of this part must be stowed—
              (1) Separate from foodstuffs; and
              (2) In a hold or barge closed or covered to prevent dispersal of the material during transportation.
              (b) [Reserved]

              § 148.150
              Stowage and segregation for materials of Class 9.
              (a) A bulk solid cargo of Class 9 material (miscellaneous hazardous material) listed in Table 148.10 of this part must be stowed and segregated as required by this section.
              (b) Ammonium nitrate fertilizer of Class 9 must be segregated as required for Class 5.1 materials in §§ 148.120 and 148.140 of this part and must be stowed—

              (1) Separated by a complete hold or compartment from readily combustible materials, chlorates, hypochlorites, nitrites, permanganates, and fibrous materials (e.g., cotton, jute, sisal, etc.);
              (2) Clear of all sources of heat, including insulated piping; and
              (3) Out of direct contact with metal engine-room boundaries.
              (c) Castor beans must be stowed separate from foodstuffs and Class 5.1 materials.
              (d) Fish meal must be stowed and segregated as required for Class 4.2 materials in §§ 148.120 and 148.130 of this part. In addition, its temperature at loading must not exceed 35 °C (95 °F), or 5 °C (9 °F) above ambient temperature, whichever is higher.
              (e) Sulfur must be stowed and segregated as required under §§ 148.120 and 148.125 of this part for a material of Class 4.1.

              § 148.155
              Stowage and segregation for potentially dangerous materials.
              (a) A PDM must be stowed and segregated according to the requirements of this section and Table 148.155 of this section.
              (b) When transporting coal—
              (1) Coal must be stowed separate from materials of Class/division 1.4 and Classes 2, 3, 4, and 5 in packaged form; and separated from bulk solid materials of Classes 4 and 5.1;
              (2) No material of Class 5.1, in either packaged or bulk solid form, may be stowed above or below a cargo of coal; and
              (3) Coal must be separated longitudinally by an intervening complete cargo compartment or hold from materials of Class 1 other than Class/division 1.4.
              (c) When transporting direct reduced iron (DRI)—
              (1) DRI lumps, pellets, or cold-molded briquettes, and DRI hot-molded briquettes, must be separated from materials of Class/division 1.4, Classes 2, 3, 4, 5, Class 8 acids in packaged form, and bulk solid materials of Classes 4 and 5.1; and
              (2) No material of Class 1, other than Class/division 1.4, may be transported on the same vessel with DRI.
              (d) Petroleum coke, calcined or uncalcined, must be—
              (1) Separated longitudinally by an intervening complete cargo compartment or hold from materials of Class/divisions 1.1 and 1.5; and

              (2) Separated by a complete cargo compartment or hold from all hazardous materials and other potentially dangerous materials in packaged and bulk solid form.

                Table 148.155—Stowage and Segregation Requirements for Potentially Dangerous Material

                  Potentially dangerous material
                  Segregate as for class listed 1

                  “Separate from” foodstuffs
                  Load only under dry weather conditions
                  Keep dry
                  Mechanical ventilation required
                  “Separate from” material listed
                  Special provisions

                  Aluminum Smelting By-products or Aluminum Re-melting Byproducts
                  4.3
                  X
                  X
                  X
                  X
                  Class 8 liquids

                  Brown Coal Briquettes

                  See paragraph (b) of this section
                  See paragraph (b) of this section.

                  Charcoal
                  4.1

                  X

                  Oily materials

                  Coal

                  See paragraph (b) of this section
                  See paragraph (b) of this section.

                  Direct reduced iron (A)

                  See paragraph (c) of this section
                  See paragraph (c) of this section.

                  Direct reduced iron (B)

                  See paragraph (c) of this section
                  See paragraph (c) of this section.

                  Ferrophosphorus
                  4.3
                  X
                  X
                  X
                  X
                  Class 8 liquids

                  Ferrolilicon
                  4.3
                  X
                  X
                  X
                  X
                  Class 8 liquids

                  Fluorospar

                  X

                  Class 8 liquids

                  Lime, Unslaked

                  X

                  All packaged and bulk solid hazardous materials

                  Linted Cotton Seed

                  X

                  Magnesia, Unslaked

                  All packaged and bulk solid hazardous materials

                  Metal Sulfide Concentrates
                  4.2
                  X

                  Class 8 liquids

                  Petroleum Coke

                  X

                  See section 148.155(d).

                  Pitch Prill
                  4.1

                  Pyrites, Calcined

                  X
                  X
                  X
                  X

                  Sawdust
                  4.1

                  X

                  All Class 5.1 and 8 liquids

                  Silicomanganese
                  4.3
                  X
                  X
                  X
                  X
                  Class 8 liquids

                  Tankage
                  4.2
                  X
                  X

                  Vanadium
                  6.1
                  X

                  Wood chips
                  4.1

                  Wood pellets
                  4.1

                  Wood pulp pellets
                  4.1

                  1 See Tables 148.120A and B.

            Subpart E—Special Requirements for Certain Materials

              § 148.200
              Purpose.
              This subpart prescribes special requirements for specific materials. These requirements are in addition to the minimum transportation requirements in Subpart C of this part that are applicable to all materials listed in Table 148.10 of this part.

              § 148.205
              Ammonium nitrate and ammonium nitrate fertilizers.
              (a) This section applies to the stowage and transportation in bulk of ammonium nitrate and the following fertilizers composed of uniform, non-segregating mixtures containing ammonium nitrate:
              (1) Ammonium nitrate containing added organic matter that is chemically inert towards the ammonium nitrate; containing at least 90 percent ammonium nitrate and a maximum of 0.2 percent of combustible material (including organic material calculated as carbon); or containing less than 90 percent but more than 70 percent of ammonium nitrate and a maximum of 0.4 percent combustible material;
              (2) Ammonium nitrate with calcium carbonate and/or dolomite, containing more than 80 percent but less than 90 percent of ammonium nitrate and a maximum of 0.4 percent of total combustible material;
              (3) Ammonium nitrate with ammonium sulfate containing more than 45 percent but a maximum of 70 percent of ammonium nitrate and containing a maximum of 0.4 percent of combustible material; and
              (4) Nitrogen phosphate or nitrogen/potash type fertilizers or complete nitrogen/phosphate/potash type fertilizers containing more than 70 percent but less than 90 percent of ammonium nitrate and a maximum of 0.4 percent of combustible material.
              (b) No material covered by this section may be transported in bulk unless it demonstrates resistance to detonation when tested by one of the following methods:
              (1) Appendix 2, Section 5, of the IMSBC Code (incorporated by reference, see § 148.8);
              (2) Test series 1 and 2 of the Class 1 (explosive) in the UN Manual of Tests and Criteria, Part I (incorporated by reference, see § 148.8); or
              (3) An equivalent test satisfactory to the Administration of the country of shipment.
              (c) Before loading a material covered by this section—
              (1) The shipper must give the master of the vessel written certification that the material has met the test requirements of paragraph (b) of this section;
              (2) The cargo hold must be inspected for cleanliness and free from readily combustible materials;
              (3) Each cargo hatch must be weathertight as defined in § 42.13-10 of this chapter;
              (4) The temperature of the material must be less than 55 °C (131 °F); and
              (5) Each fuel tank under a cargo hold where the material is stowed must be pressure tested before loading to ensure that there is no leakage of manholes or piping systems leading through the cargo hold.
              (d) Bunkering or transferring of fuel to or from the vessel may not be performed during cargo loading and unloading operations involving a material covered by this section.
              (e) When a material covered by this section is transported on a cargo vessel—
              (1) No other material may be stowed in the same hold with that material;
              (2) In addition to the segregation requirements in § 148.140 of this part, the material must be separated by a complete cargo compartment or hold from readily combustible materials, chlorates, chlorides, chlorites, hypochlorites, nitrites, permanganates, and fibrous materials; and
              (3) The bulkhead between a cargo hold containing a material covered by this section and the engine room must be insulated to “A-60” class division or an equivalent arrangement to the satisfaction of the cognizant Coast Guard Captain of the Port or the Administration of the country of shipment.

              § 148.220
              Ammonium nitrate-phosphate fertilizers.
              (a) This section applies to the stowage and transportation of uniform, nonsegregating mixtures of nitrogen/phosphate or nitrogen/potash type fertilizers, or complete fertilizers of nitrogen/phosphate/potash type containing a maximum of 70 percent of ammonium nitrate and containing a maximum of 0.4 percent total added combustible material or containing a maximum of 45 percent ammonium nitrate with unrestricted combustible material.

              (b) A fertilizer mixture described in paragraph (a) of this section is exempt if—

              (1) When tested in accordance with the trough test prescribed in Appendix 2, Section 4, of the IMSBC Code or in the UN Manual of Tests and Criteria, Part III, Subsection 38.2 (incorporated by reference, see § 148.8), it is found to be free from the risk of self-sustaining decomposition.
              (2) [Reserved]
              (c) No fertilizer covered by this section may be transported in bulk if, when tested in accordance with the trough test prescribed in Appendix 2, Section 4, of the IMSBC Code or in the UN Manual of Tests and Criteria, Part III, Subsection 38.2 (incorporated by reference, see § 148.8), it has a self-sustaining decomposition rate that is greater than 0.25 meters per hour, or is liable to self-heat sufficient to initiate decomposition.
              (d) Fertilizers covered by this section must be stowed away from all sources of heat, and out of direct contact with a metal engine compartment boundary.
              (e) Bunkering or transferring of fuel may not be performed during loading and unloading of fertilizer covered by this section.
              (f) Fertilizer covered by this section must be segregated as prescribed in §§ 148.140 and 148.220(d) of this part.

              § 148.225
              Calcined pyrites (pyritic ash, fly ash).
              (a) This part does not apply to the shipment of calcined pyrites that are the residual ash of oil or coal fired power stations.
              (b) This section applies to the stowage and transportation of calcined pyrites that are the residual product of sulfuric acid production or elemental metal recovery operations.
              (c) Before loading calcined pyrites covered by this section—
              (1) The cargo space must be as clean and dry as practical;
              (2) The calcined pyrites must be dry; and
              (3) Precautions must be taken to prevent the penetration of calcined pyrites into other cargo spaces, bilges, wells, and ceiling boards.
              (d) After calcined pyrites covered by this section have been unloaded from a cargo space, the cargo space must be thoroughly cleaned. Cargo residues and sweepings must be disposed of as prescribed in 33 CFR parts 151.55 through 151.77.

              § 148.227
              Calcium nitrate fertilizers.
              This part does not apply to commercial grades of calcium nitrate fertilizers consisting mainly of a double salt (calcium nitrate and ammonium nitrate) and containing a maximum of 15.5 percent nitrogen and at least 12 percent of water.

              § 148.230
              Calcium oxide (lime, unslaked).
              (a) When transported by barge, unslaked lime (calcium oxide) must be carried in an unmanned, all steel, double-hulled barge equipped with weathertight hatches or covers. The barge must not carry any other cargo while unslaked lime is on board.
              (b) The shipping paper requirements in § 148.60 of this part and the dangerous cargo manifest requirements in § 148.70 of this part do not apply to the transportation of unslaked lime under paragraph (a) of this section.

              § 148.235
              Castor beans.
              (a) This part applies only to the stowage and transportation of whole castor beans. Castor meal, castor pomace, and castor flakes may not be shipped in bulk.
              (b) Persons handling castor beans must wear dust masks and goggles.
              (c) Care must be taken to prevent castor bean dust from entering accommodation, control, or service spaces during cargo transfer operations.

              § 148.240
              Coal.
              (a) The electrical equipment in cargo holds carrying coal must meet the requirements of Subpart 111.105 of this chapter or an equivalent standard approved by the administration of the vessel's flag state.
              (b) Before coal is loaded in a cargo hold, the bilges must be as clean and dry as practical. The hold must also be free of any readily combustible material, including the residue of previous cargoes if other than coal.
              (c) The master of each vessel carrying coal must ensure that—

              (1) All openings to the cargo hold, except for unloading gates on self-unloading vessels, are sealed before loading the coal and, unless the coal is as described in paragraph (f) of this section, the hatches must also be sealed after loading;
              (2) As far as practical, gases emitted by the coal do not accumulate in enclosed working spaces such as storerooms, shops, or passageways, and tunnel spaces on self-unloading vessels, and that such spaces are adequately ventilated;
              (3) The vessel has adequate ventilation as required by paragraph (f) of this section; and
              (4) If the temperature of the coal is to be monitored under paragraph (e)(2)(i) of this section, the vessel has instruments that are capable of measuring the temperature of the cargo in the range 0°-100 °C (32 °-212 °F) without entry into the cargo hold.
              (d) A cargo hold containing coal must not be ventilated unless the conditions of paragraph (f) of this section are met, or unless methane is detected under paragraph (h) of this section.
              (e) If coal waiting to be loaded has shown a tendency to self-heat, has been handled so that it may likely self-heat, or has been observed to be heating, the master is responsible for monitoring the temperature of the coal at several intervals during these times:
              (1) Before loading; and
              (2) During the voyage, by—
              (i) Measuring the temperature of the coal;
              (ii) Measuring the emission of carbon monoxide; or
              (iii) Both.
              (f) If coal waiting to be loaded has a potential to emit dangerous amounts of methane, for example it is freshly mined, or has a history of emitting dangerous amounts of methane, then:
              (1) Surface ventilation, either natural or from fixed or portable nonsparking fans, must be provided; and
              (2) The atmosphere above the coal must be monitored for the presence of methane as prescribed in paragraph (h) of this section. The results of this monitoring must be recorded at least twice in every 24-hour period, unless the conditions of paragraph (m) of this section are met.
              (g) Electrical equipment and cables in a hold containing a coal described in paragraph (f) of this section must be either suitable for use in an explosive gas atmosphere or de-energized at a point outside the hold. Electrical equipment and cables necessary for continuous safe operations, such as lighting fixtures, must be suitable for use in an explosive gas atmosphere. The master of the vessel must ensure that the affected equipment and cables remain de-energized as long as this coal remains in the hold.
              (h) For all coal loaded on a vessel, other than an unmanned barge, the atmosphere above the coal must be routinely tested for the presence of methane, carbon monoxide, and oxygen, following the procedures in the Appendices to the schedules for Coal and Brown Coal Briquettes as contained in the IMSBC Code (incorporated by reference, see § 148.8). This testing must be performed in such a way that the cargo hatches are not opened and entry into the hold is not necessary.
              (i) When carrying a coal described in paragraph (e) of this section, the atmosphere above the coal must be monitored for the presence of carbon monoxide as prescribed in paragraph (h) of this section. The results of this monitoring must be recorded at least twice in every 24-hour period, unless the conditions of paragraph (m) of this section are met. If the level of carbon monoxide is increasing rapidly or reaches 20 percent of the lower flammability limit (LFL), the frequency of monitoring must be increased.
              (j) When a cargo of coal has a potential to self-heat or has been observed to be heating, the hatches should be closed and sealed and all surface ventilation halted except as necessary to remove any methane that may have accumulated.
              (k) If the level of carbon monoxide monitored under paragraph (i) of this section continues to increase rapidly or the temperature of coal carried on board a vessel exceeds 55 °C (131 °F) and is increasing rapidly, the master must notify the nearest Coast Guard Captain of the Port of—
              (1) The name, nationality, and position of the vessel;

              (2) The most recent temperature, if measured, and levels of carbon monoxide and methane;

              (3) The port where the coal was loaded and the destination of the coal;
              (4) The last port of call of the vessel and its next port of call; and
              (5) What action has been taken.
              (l) If the level of methane as monitored under paragraph (h) of this section reaches 20 percent of the LFL or is increasing rapidly, ventilation of the cargo hold, under paragraph (f) of this section, must be initiated. If this ventilation is provided by opening the cargo hatches, care must be taken to avoid generating sparks.
              (m) The frequency of monitoring required by paragraph (f) of this section may be reduced at the discretion of the master provided that—
              (1) The level of gas measured is less than 20 percent of the LFL;
              (2) The level of gas measured has remained steady or decreased over three consecutive readings, or has increased by less than 5 percent over four consecutive readings spanning at least 48 hours; and
              (3) Monitoring continues at intervals sufficient to determine that the level of gas remains within the parameters of paragraphs (m)(1) and (m)(2) of this section.

              § 148.242
              Copra.
              Copra must have surface ventilation. It must not be stowed against heated surfaces including fuel oil tanks which may require heating.

              § 148.245
              Direct reduced iron (DRI); lumps, pellets, and cold-molded briquettes.
              (a) Before loading DRI lumps, pellets, or cold-molded briquettes—
              (1) The master must have a written certification from a competent person appointed by the shipper and recognized by the Commandant (CG-ENG-5) stating that the DRI, at the time of loading, is suitable for shipment;
              (2) The DRI must be aged for at least 3 days, or be treated with an air passivation technique or some other equivalent method that reduces its reactivity to at least the same level as the aged DRI; and
              (3) Each hold and bilge must be as clean and dry as practical. Other than double bottom tanks, adjacent ballast tanks must be kept empty when possible. All wooden fixtures, such as battens, must be removed from the hold.
              (b) Each boundary of a hold where DRI lumps, pellets, or cold-molded briquettes are to be carried must be resistant to fire and passage of water.
              (c) DRI lumps, pellets, or cold-molded briquettes that are wet, or that are known to have been wetted, may not be accepted for transport. The moisture content of the DRI must not exceed 0.3 percent prior to loading.
              (d) DRI lumps, pellets and cold-molded briquettes must be protected at all times from contact with water, and must not be loaded or transferred from one vessel to another during periods of rain or snow.
              (e) DRI lumps, pellets, or cold-molded briquettes may not be loaded if their temperature is greater than 65 °C (150 °F).
              (f) The shipper of DRI lumps, pellets, or cold-molded briquettes in bulk must ensure that an inert atmosphere of less than 5 percent oxygen and 1 percent hydrogen, by volume, is maintained throughout the voyage in any hold containing these materials.
              (g) When DRI lumps, pellets, or cold-molded briquettes are loaded, precautions must be taken to avoid the concentration of fines (pieces less than 6.35mm in size) in any one location in the cargo hold.
              (h) Radar and RDF scanners must be protected against the dust generated during cargo transfer operations of DRI lumps, pellets, or cold-molded briquettes.

              § 148.250
              Direct reduced iron (DRI); hot-molded briquettes.
              (a) Before loading DRI hot-molded briquettes—
              (1) The master must have a written certification from a competent person appointed by the shipper and recognized by the Commandant (CG-ENG-5) that at the time of loading the DRI hot-molded briquettes are suitable for shipment; and

              (2) Each hold and bilge must be as clean and dry as practical. Except double bottom tanks, adjacent ballast tanks must be kept empty where possible. All wooden fixtures, such as battens, must be removed.

              (b) All boundaries of a hold must be resistant to fire and passage of water to carry DRI hot-molded briquettes.
              (c) DRI hot-molded briquettes must be protected at all times from contact with water. They must not be loaded or transferred from one vessel to another during periods of rain or snow.
              (d) DRI hot-molded briquettes may not be loaded if their temperature is greater than 65 °C (150 °F).
              (e) When loading DRI hot-molded briquettes, precautions must be taken to avoid the concentration of fines (pieces less than 6.35mm in size) in any one location in the cargo hold.
              (f) Adequate surface ventilation must be provided when carrying or loading DRI hot-molded briquettes.
              (g) When DRI hot-molded briquettes are carried by unmanned barge—
              (1) The barge must be fitted with vents adequate to provide natural ventilation; and
              (2) The cargo hatches must be closed at all times after loading the DRI hot-molded briquettes.
              (h) Radar and RDF scanners must be adequately protected against dust generated during cargo transfer operations of DRI hot-molded briquettes.
              (i) During final discharge only, a fine spray of water may be used to control dust from DRI hot-molded briquettes.

              § 148.255
              Ferrosilicon, aluminum ferrosilicon, and aluminum silicon containing more than 30% but less than 90% silicon.
              (a) This section applies to the stowage and transportation of ferrosilicon, aluminum ferrosilicon, and aluminum silicon containing more than 30 percent but less than 90 percent silicon.
              (b) The shipper of material described in paragraph (a) of this section must give the master a written certification stating that after manufacture the material was stored under cover, but exposed to the weather, in the particle size in which it is to be shipped, for at least three days before shipment.
              (c) Material described in paragraph (a) of this section must be protected at all times from contact with water, and must not be loaded or unloaded during periods of rain or snow.
              (d) Except as provided in paragraph (e) of this section, each hold containing material described in paragraph (a) of this section must be mechanically ventilated by at least two separate fans. The total ventilation must be at least five air changes per hour, based on the empty hold. Ventilation must not allow escaping gas to reach accommodation or work spaces, on or under deck.
              (e) An unmanned barge which is provided with natural ventilation need not comply with paragraph (d) of this section.
              (f) Each space adjacent to a hold containing material described in paragraph (a) of this section must be well ventilated with mechanical fans. No person may enter that space unless it has been tested to ensure that it is free from phosphine and arsine gases.
              (g) Scuttles and windows in accommodation and work spaces adjacent to holds containing material described in paragraph (a) of this section must be kept closed while this material is being loaded and unloaded.
              (h) Any bulkhead between a hold containing material described in paragraph (a) of this section and an accommodation or work space must be gas tight and adequately protected against damage from any unloading equipment.
              (i) When a hold containing material described in paragraph (a) of this section is equipped with atmosphere sampling type smoke detectors with lines that terminate in accommodation or work spaces, those lines must be blanked off gas-tight.
              (j) If a hold containing material described in paragraph (a) of this section must be entered at any time, the hatches must be open for two hours before entry to dissipate any accumulated gases. The atmosphere in the hold must be tested to ensure that there is no phosphine or arsine gas present.
              (k) After unloading material described in paragraph (a) of this section, each cargo hold must be thoroughly cleaned and tested to ensure that no phosphine or arsine gas remains.

              § 148.260
              Ferrous metal.

              (a) This part does not apply to the stowage and transportation in bulk of stainless steel borings, shavings, turnings, or cuttings; nor does this part apply to an unmanned barge on a voyage entirely on the navigable waters of United States.
              (b) Ferrous metal may not be stowed or transported in bulk unless the following conditions are met:
              (1) All wooden sweat battens, dunnage, and debris must be removed from the hold before the ferrous metal is loaded;
              (2) If weather is inclement during loading, hatches must be covered or otherwise protected to keep the material dry;
              (3) During loading and transporting, the bilge of each hold in which ferrous metal is stowed or will be stowed must be kept as dry as practical;
              (4) During loading, the ferrous metal must be compacted in the hold as frequently as practicable with a bulldozer or other means that provides equivalent surface compaction;
              (5) No other material may be loaded in a hold containing ferrous metal unless—
              (i) The material to be loaded in the same hold with the ferrous metal is not a material listed in Table 148.10 of this part or a readily combustible material;
              (ii) The loading of the ferrous metal is completed first; and
              (iii) The temperature of the ferrous metal in the hold is below 55 °C (131 °F) or has not increased in eight hours before the loading of the other material; and
              (6) During loading, the temperature of the ferrous metal in the pile being loaded must be below 55 °C (131 °F).
              (c) The master of a vessel that is loading or transporting a ferrous metal must ensure that the temperature of the ferrous metal is taken—
              (1) Before loading;
              (2) During loading, in each hold and pile being loaded, at least once every twenty-four hours and, if the temperature is rising, as often as is necessary to ensure that the requirements of this section are met; and
              (3) After loading, in each hold, at least once every 24 hours.
              (d) During loading, if the temperature of the ferrous metal in a hold is 93 °C (200 °F) or higher, the master must notify the Coast Guard Captain of the Port and suspend loading until the Captain of the Port is satisfied that the temperature of the ferrous metal is 88 °C (190 °F) or less.
              (e) After loading ferrous metal—
              (1) If the temperature of the ferrous metal in each hold is 65 °C (150 °F) or above, the master must notify the Coast Guard Captain of the Port, and the vessel must remain in the port area until the Captain of the Port is satisfied that the temperature of ferrous metal has shown a downward trend below 65 °C (150 °F) for at least eight hours after completion of loading of the hold; or
              (2) If the temperature of the ferrous metal in each hold is less than 88 °C (190 °F) and has shown a downward trend for at least eight hours after the completion of loading, the master must notify the Coast Guard Captain of the Port, and the vessel must remain in the port area until the Captain of the Port confirms that the vessel is sailing directly to another port, no further than 12 hours sailing time, for the purpose of loading more ferrous metal in bulk or to completely off-load the ferrous metal.
              (f) Except for shipments of ferrous metal in bulk which leave the port of loading under the conditions specified in paragraph (e)(2) of this section, if after the vessel leaves the port, the temperature of the ferrous metal in the hold rises above 65 °C (150 °F), the master must notify the nearest Coast Guard Captain of the Port as soon as possible of—
              (1) The name, nationality, and position of the vessel;
              (2) The most recent temperature taken;
              (3) The length of time that the temperature has been above 65 °C (150 °F) and the rate of rise, if any;
              (4) The port where the ferrous metal was loaded and the destination of the ferrous metal;
              (5) The last port of call of the vessel and its next port of call;
              (6) What action has been taken; and
              (7) Whether any other cargo is endangered.

              § 148.265
              Fish meal or fish scrap.

              (a) This part does not apply to fish meal or fish scrap that contains less than 5 percent moisture by weight.

              (b) Fish meal or fish scrap may contain a maximum of 12 percent moisture by weight and a maximum of 15 percent fat by weight.
              (c) At the time of production, fish meal or fish scrap must be treated with an effective antioxidant (at least 400 mg/kg (ppm) ethoxyquin, at least 1000 mg/kg (ppm) butylated hydroxytoluene, or at least 1000 mg/kg (ppm) of tocopherol-based liquid antioxidant).
              (d) Shipment of the fish meal or fish scrap must take place a maximum of 12 months after the treatment prescribed in paragraph (c) of this section.
              (e) Fish meal or fish scrap must contain at least 100 mg/kg (ppm) of ethoxyquin or butylated hydroxytoluene or at least 250 mg/kg (ppm) of tocopherol-based antioxidant at the time of shipment.
              (f) At the time of loading, the temperature of the fish meal or fish scrap to be loaded may not exceed 35 °C (95 °F), or 5 °C (9 °F) above the ambient temperature, whichever is higher.
              (g) For each shipment of fish meal or fish scrap, the shipper must give the master a written certification stating—
              (1) The total weight of the shipment;
              (2) The moisture content of the material;
              (3) The fat content of the material;
              (4) The type of antioxidant and its concentration in the fish meal or fish scrap at the time of shipment;
              (5) The date of production of the material; and
              (6) The temperature of the material at the time of shipment.
              (h) During a voyage, temperature readings must be taken of fish meal or fish scrap three times a day and recorded. If the temperature of the material exceeds 55 °C (131 °F) and continues to increase, ventilation to the hold must be restricted. This paragraph does not apply to shipments by unmanned barge.

              § 148.270
              Hazardous substances.
              (a) Each bulk shipment of a hazardous substance must—
              (1) Be assigned a shipping name in accordance with 49 CFR 172.203(c); and
              (2) If the hazardous substance is also listed as a hazardous solid waste in 40 CFR part 261, follow the applicable requirements of 40 CFR chapter I, subchapter I.
              (b) Each release of a quantity of a designated substance equal to or greater than the reportable quantity, as set out in Table 1 to Appendix A of 49 CFR 171.101, when discharged into or upon the navigable waters of the United States, adjoining shorelines, into or upon the contiguous zone, or beyond the contiguous zone, must be reported as required in subpart B of 33 CFR part 153.
              (c) A hazardous substance must be stowed in a hold or barge that is closed or covered and prevents dispersal of the material during transportation.
              (d) During cargo transfer operations, a spill or release of a hazardous substance must be minimized to the greatest extent possible. Each release must be reported as required in paragraph (b) of this section.
              (e) After a hazardous substance is unloaded, the hold in which it was carried must be cleaned thoroughly. The residue of the substance must be disposed of pursuant to 33 CFR 151.55 through 151.77 and the applicable regulations of 40 CFR subchapter I.

              § 148.275
              Iron oxide, spent; iron sponge, spent.
              (a) Before spent iron oxide or spent iron sponge is loaded in a closed hold, the shipper must give the master a written certification that the material has been cooled and weathered for at least eight weeks.
              (b) Both spent iron oxide and spent iron sponge may be transported on open hold all-steel barges after exposure to air for a period of at least ten days.

              § 148.280
              Magnesia, unslaked (lightburned magnesia, calcined magnesite, caustic calcined magnesite).
              (a) This part does not apply to the transport of natural magnesite, magnesium carbonate, or magnesia clinkers.

              (b) When transported by barge, unslaked magnesia must be carried in an unmanned, all-steel, double-hulled barge equipped with weathertight hatches or covers. The barge may not carry any other cargo while unslaked magnesia is on board.

              (c) The shipping paper requirements in § 148.60 of this part and the dangerous cargo manifest requirements in § 148.70 of this part do not apply to unslaked magnesia transported under the requirements of paragraph (b) of this section.

              § 148.285
              Metal sulfide concentrates.
              (a) When information given by the shipper under § 148.60 of this part indicates that the metal sulfide concentrate may generate toxic or flammable gases, the appropriate gas detection equipment from §§ 148.415 and 148.420 of this part must be on board the vessel.
              (b) No cargo hold containing a metal sulfide concentrate may be ventilated.
              (c) No person may enter a hold containing a metal sulfide concentrate unless—
              (1) The atmosphere in the cargo hold has been tested and contains sufficient oxygen to support life and, where the shipper indicates that toxic gas(es) may be generated, the atmosphere in the cargo hold has been tested for the toxic gas(es) and the concentration of the gas(es) is found to be less than the TLV; or
              (2) An emergency situation exists and the person entering the cargo hold is wearing the appropriate self-contained breathing apparatus.

              § 148.290
              Peat moss.
              (a) Before shipment, peat moss must be stockpiled under cover to allow drainage and reduce its moisture content.
              (b) The cargo must be ventilated so that escaping gases cannot reach living quarters on or above deck.
              (c) Persons handling or coming into contact with peat moss must wear gloves, a dust mask, and goggles.

              § 148.295
              Petroleum coke, calcined or uncalcined, at 55 °C (131 °F) or above.
              (a) This part does not apply to shipments of petroleum coke, calcined or uncalcined, on any vessel when the temperature of the material is less than 55 °C (131 °F).
              (b) Petroleum coke, calcined or uncalcined, or a mixture of calcined and uncalcined petroleum coke may not be loaded when its temperature exceeds 107 °C (225 °F).
              (c) No other hazardous materials may be stowed in any hold adjacent to a hold containing petroleum coke except as provided in paragraph (d) of this section.
              (d) Before petroleum coke at 55 °C (131 °F) or above may be loaded into a hold over a tank containing fuel or material having a flashpoint of less than 93 °C (200 °F), a 0.6 to 1.0 meter (2 to 3 foot) layer of the petroleum coke at a temperature not greater than 43 °C (110 °F) must first be loaded.
              (e) Petroleum coke must be loaded as follows:
              (1) For a shipment in a hold over a fuel tank, the loading of a cooler layer of petroleum coke in the hold as required by paragraph (d) of this section must be completed before loading the petroleum coke at 55 °C (131 °F) or above in any hold of the vessel;
              (2) Upon completion of the loading described in paragraph (e)(1) of this section, a 0.6 to 1.0 meter (2 to 3 foot) layer of the petroleum coke at 55 °C (131 °F) or above must first be loaded into each hold, including those holds already containing a cooler layer of the petroleum coke; and
              (3) Upon completion of the loading described in paragraph (e)(2) of this section, normal loading of the petroleum coke may be completed.
              (f) The master of the vessel must warn members of a crew that petroleum coke is hot, and that injury due to burns is possible.
              (g) During the voyage, the temperature of the petroleum coke must be monitored often enough to detect spontaneous heating.

              § 148.300
              Radioactive materials.
              (a) Radioactive materials that may be stowed or transported in bulk are limited to those radioactive materials defined in 49 CFR 173.403 as Low Specific Activity Material, LSA-1, or Surface Contaminated Object, SCO-1.
              (b) Skin contact, inhalation or ingestion of dusts generated by Class 7 material listed in Table 148.10 of this part must be minimized.

              (c) Each hold used for the transportation of Class 7 material (radioactive) listed in Table 148.10 of this part must be surveyed after the completion of off-loading by a qualified person using appropriate radiation detection instruments. Such holds must not be used for the transportation of any other material until the non-fixed contamination on any surface, when averaged over an area of 300 cm2, does not exceed the following levels:
              (1) 4.0 Bq/cm2 (10−4 uCi/cm2;) for beta and gamma emitters and low toxicity alpha emitters, natural uranium, natural thorium, uranium-235, uranium-238, thorium-232, thorium-228 and thorium-230 when contained in ores or physical or chemical concentrates, and radionuclides with a half-life of less than 10 days; and
              (2) 0.4 Bq/cm2 (10−5 uCi/cm2) for all other alpha emitters.

              § 148.310
              Seed cake.
              (a) This part does not apply to solvent-extracted rape seed meal, pellets, soya bean meal, cotton seed meal, or sunflower seed meal that—
              (1) Contains a maximum of 4 percent vegetable oil and a maximum of 15 percent vegetable oil and moisture combined; and
              (2) As far as practical, is free from flammable solvent.
              (b) This part does not apply to mechanically expelled citrus pulp pellets containing not more than 2.5 percent oil and a maximum of 14 percent oil and moisture combined.
              (c) Before loading, the seed cake must be aged per the instructions of the shipper.
              (d) Before loading, the shipper must give the master or person in charge of a barge a certificate from a competent testing laboratory stating the oil and moisture content of the seed cake.
              (e) The seed cake must be kept as dry as practical at all times.
              (f) If the seed cake is solvent-extracted, it must be—
              (1) As free as practical from flammable solvent; and
              (2) Stowed in a mechanically ventilated hold.
              (g) For a voyage with a planned duration greater than 5 days, the vessel must be equipped with facilities for introducing carbon dioxide or another inert gas into the hold.
              (h) Temperature readings of the seed cake must be taken at least once in every 24-hour period. If the temperature exceeds 55 °C (131 °F) and continues to increase, ventilation to the cargo hold must be discontinued. If heating continues after ventilation has been discontinued, carbon dioxide or the inert gas required under paragraph (g) of this section must be introduced into the hold. If the seed cake is solvent-extracted, the use of inert gas must not be introduced until fire is apparent, to avoid the possibility of igniting the solvent vapors by the generation of static electricity.
              (i) Seed cake must be carried under the terms of a Special Permit issued by the Commandant (CG-ENG-5) per subpart B of this part if—
              (1) The oil was mechanically expelled; and
              (2) It contains more than 10 percent vegetable oil or more than 20 percent vegetable oil and moisture combined.

              § 148.315
              Sulfur.
              (a) This part applies to lump or coarse grain powder sulfur only. Fine-grained powder (“flowers of sulfur”) may not be transported in bulk.
              (b) After the loading or unloading of lump or coarse grain powder sulfur has been completed, sulfur dust must be removed from the vessel's decks, bulkheads, and overheads. Cargo residues and deck sweepings must be disposed of pursuant to 33 CFR 151.55 through 151.77.
              (c) A cargo space that contains sulfur or the residue of a sulfur cargo must be adequately ventilated, preferably by mechanical means. Each ventilator intake must be fitted with a spark-arresting screen.

              § 148.320
              Tankage; garbage tankage; rough ammonia tankage; or tankage fertilizer.
              (a) This part applies to rough ammonia tankage in bulk that contains 7 percent or more moisture by weight, and garbage tankage and tankage fertilizer that contains 8 percent or more moisture by weight.

              (b) Tankage to which this part applies may not be loaded in bulk if its temperature exceeds 38 °C (100 °F).

              (c) During the voyage, the temperature of the tankage must be monitored often enough to detect spontaneous heating.

              § 148.325
              Wood chips; wood pellets; wood pulp pellets.
              (a) This part applies to wood chips and wood pulp pellets in bulk that may oxidize, leading to depletion of oxygen and an increase in carbon dioxide in the cargo hold.
              (b) No person may enter a cargo hold containing wood chips, wood pellets, or wood pulp pellets, unless—
              (1) The atmosphere in the cargo hold has been tested and contains enough oxygen to support life; or
              (2) The person entering the cargo hold is wearing the appropriate self-contained breathing apparatus.

              § 148.330
              Zinc ashes; zinc dross; zinc residues; zinc skimmings.
              (a) The shipper must inform the cognizant Coast Guard Captain of the Port in advance of any cargo transfer operations involving zinc ashes, zinc dross, zinc residues, or zinc skimmings (collectively, “zinc material”) in bulk.
              (b) Zinc material must be aged by exposure to the elements for at least one year before shipment in bulk.
              (c) Before loading in bulk, zinc material must be stored under cover for a period of time to ensure that it is as dry as practical. No zinc material that is wet may be accepted for shipment.
              (d) Zinc material may not be loaded in bulk if its temperature is greater than 11.1 °C (52 °F) in excess of the ambient temperature.
              (e) Paragraphs (e)(1) through (e)(5) of this section apply only when zinc materials are carried by a cargo vessel:
              (1) Zinc material in bulk must be stowed in a mechanically ventilated hold that—
              (i) Is designed for at least one complete air change every 30 minutes based on the empty hold;
              (ii) Has explosion-proof motors approved for use in Class I, Division 1, Group B atmospheres or equivalent motors approved by the vessel's flag state administration for use in hydrogen atmospheres; and
              (iii) Has nonsparking fans.
              (2) Combustible gas detectors capable of measuring hydrogen concentrations of 0 to 4.1 percent by volume must be permanently installed in holds that will carry zinc material. If the concentration of hydrogen in the space above the cargo exceeds 1 percent by volume, the ventilation system must be run until the concentration drops below 1 percent by volume.
              (3) Thermocouples must be installed approximately 6 inches below the surface of the zinc material or in the space immediately above the zinc material. If an increase in temperature is detected, the mechanical ventilation system required by paragraph (d) of this section must be used until the temperature of the zinc material is below 55 °C (131 °F).
              (4) Except as provided in paragraph (e)(5) of this section, the cargo hatches of holds containing zinc material must remain sealed to prevent the entry of seawater.
              (5) If the concentration of hydrogen is near 4.1 percent by volume and increasing, despite ventilation, or the temperature of the zinc material reaches 65 °C (150 °F), the cargo hatches should be opened provided that weather and sea conditions are favorable. When hatches are opened take care to prevent sparks and minimize the entry of water.

            Subpart F—Additional Special Requirements

              § 148.400
              Applicability.
              Unless stated otherwise, the requirements of this subpart apply only to the shipment or loading of materials, listed in Table 148.10 of this part, for which Table 148.10 contains a reference to a section or paragraph of this subpart.

              § 148.405
              Sources of ignition.
              (a) Except in an emergency, no welding, burning, cutting, chipping, or other operations involving the use of fire, open flame, sparks, or arc-producing equipment, may be performed in a cargo hold containing a Table 148.10 material or in an adjacent space.

              (b) A cargo hold or adjacent space must not have any flammable gas concentrations over 10 percent of the LFL before the master may approve operations involving the use of fire, open flame, or spark- or arc-producing equipment in that hold or adjacent space.

              § 148.407
              Smoking.
              When Table 148.10 of this part associates a material with a reference to this section, and that material is being loaded or unloaded, smoking is prohibited anywhere on the weatherdeck of the vessel. While such a material is on board the vessel, smoking is prohibited in spaces adjacent to the cargo hold and on the vessel's deck in the vicinity of cargo hatches, ventilator outlets, and other accesses to the hold containing the material. “NO SMOKING” signs must be displayed in conspicuous locations in the areas where smoking is prohibited.

              § 148.410
              Fire hoses.
              When Table 148.10 of this part associates a material with a reference to this section, a fire hose must be available at each hatch through which the material is being loaded.

              § 148.415
              Toxic gas analyzers.
              When Table 148.10 of this part associates a material with a reference to a paragraph in this section, each vessel transporting the material, other than an unmanned barge, must have on board a gas analyzer appropriate for the toxic gas listed in that paragraph. At least two members of the crew must be knowledgeable in the use of the equipment. The equipment must be maintained in a condition ready for use and calibrated according to the instructions of its manufacturer. The atmosphere in the cargo hold and adjacent spaces must be tested before a person is allowed to enter these spaces. If toxic gases are detected, the space must be ventilated and retested before entry. The toxic gases for which the requirements of this section must be met are:
              (a) Arsine;
              (b) Carbon monoxide;
              (c) Hydrogen cyanide;
              (d) Hydrogen sulfide;
              (e) Phosphine; and
              (f) Sulfur dioxide.

              § 148.420
              Flammable gas analyzers.
              When Table 148.10 of this part associates a material with a reference to a paragraph in this section, each vessel transporting the material, other than an unmanned barge, must have on board a gas analyzer appropriate for the flammable gas listed in that paragraph. At least two members of the crew must be knowledgeable in the use of the equipment. The equipment must be maintained in a condition ready for use, capable of measuring 0 to 100 percent LFL for the gas indicated, and calibrated in accordance with the instructions of its manufacturer. The atmosphere in the cargo hold must be tested before any person is allowed to enter. If flammable gases are detected, the space must be ventilated and retested before entry. The flammable gases for which the requirements of this section must be met are:
              (a) Carbon monoxide;
              (b) Hydrogen; and
              (c) Methane.

              § 148.435
              Electrical circuits in cargo holds.
              During transport of a material that Table 148.10 of this part associates with a reference to this section, each electrical circuit terminating in a cargo hold containing the material must be electrically disconnected from the power source at a point outside of the cargo hold. The point of disconnection must be marked to prevent the circuit from being reenergized while the material is on board.

              § 148.445
              Adjacent spaces.
              When transporting a material that Table 148.10 of this part associates with a reference to this section, the following requirements must be met:
              (a) Each space adjacent to a cargo hold must be ventilated by natural ventilation or by ventilation equipment safe for use in an explosive gas atmosphere.

              (b) Each space adjacent to a cargo hold containing the material must be regularly monitored for the presence of the flammable gas indicated by reference to § 148.420 of this part. If the level of flammable gas in any space reaches 30 percent of the LFL, all electrical equipment that is not certified safe for use in an explosive gas atmosphere must be de-energized at a location outside of that space. This location must be labeled to prohibit reenergizing until the atmosphere in the space is tested and found to be less than 30 percent of the LFL.
              (c) Each person who enters any space adjacent to a cargo hold or compartment containing the material must wear a self-contained breathing apparatus unless—
              (1) The space has been tested, or is routinely monitored, for the appropriate flammable gas and oxygen;
              (2) The level of flammable gas is less than 10 percent of the LFL; and
              (3) The level of toxic gas, if required to be tested, is less than the TLV.
              (d) No person may enter an adjacent space if the level of flammable gas is greater than 30 percent of the LFL. If emergency entry is necessary, each person who enters the space must wear a self-contained breathing apparatus and caution must be exercised to ensure that no sparks are produced.

              § 148.450
              Cargoes subject to liquefaction.
              (a) This section applies only to cargoes identified in Table 148.10 of this part with a reference to this section and cargoes identified in the IMSBC Code (incorporated by reference, see § 148.8) as cargoes that may liquefy.
              (b) This section does not apply to—
              (1) Shipments by unmanned barge; or
              (2) Cargoes of coal that have an average particle size of 10mm (.394 in.) or greater.
              (c) Definitions as used in this section—
              (1) Cargo subject to liquefaction means a material that is subject to moisture migration and subsequent liquefaction if shipped with moisture content in excess of the transportable moisture limit.
              (2) Moisture migration is the movement of moisture by settling and consolidation of a material, which may result in the development of a flow state in the material.
              (3) Transportable moisture limit or TML of a cargo that may liquefy is the maximum moisture content that is considered safe for carriage on vessels.
              (d) Except on a vessel that is specially constructed or specially fitted for the purpose of carrying such cargoes (see also section 7 of the IMSBC Code, incorporated by reference, see § 148.8), a cargo subject to liquefaction may not be transported by vessel if its moisture content exceeds its TML.
              (e) The shipper of a cargo subject to liquefaction must give the master the material's moisture content and TML.
              (f) The master of a vessel shipping a cargo subject to liquefaction must ensure that—
              (1) A cargo containing a liquid is not stowed in the same cargo space with a cargo subject to liquefaction; and
              (2) Precautions are taken to prevent the entry of liquids into a cargo space containing a cargo subject to liquefaction.
              (g) The moisture content and TML of a material may be determined by the tests described in Appendix 2, Section 1, of the IMSBC Code (incorporated by reference, see § 148.8).

          PART 149 [RESERVED]

        SUBCHAPTER O—CERTAIN BULK DANGEROUS CARGOES

          Pt. 150
          PART 150—COMPATIBILITY OF CARGOES

            Sec.
            150.105
            OMB control numbers assigned pursuant to the Paperwork Reduction Act.
            150.110
            Applicability.
            150.115
            Definitions.
            150.120
            Definition of incompatible cargoes.
            150.130
            Loading a cargo on vessels carrying cargoes with which it is incompatible.
            150.140
            Cargoes not listed in Table 1 or 2.
            150.150
            Exceptions to the compatibility chart.
            150.160
            Carrying a cargo as an exception to the compatibility chart.
            150.170
            Right of appeal.
            Figure I to Part 150—Compatibility Chart
            Table 1 to Part 150—Alphabetical List of Cargoes
            Table 2 to Part 150—Grouping of Cargoes
            Appendix I to Part 150—Exceptions to the Chart
            Appendix II to Part 150—Explanation of Figure 1
            Appendix III to Part 150—Testing Procedures for Determining Exceptions to the Chart
            Appendix IV to Part 150—Data Sheet

            Authority:
            46 U.S.C. 3306, 3703; Department of Homeland Security Delegation No. 0170.1. Section 150.105 issued under 44 U.S.C. 3507; Department of Homeland Security Delegation No. 0170.1.

            Source:
            CGD 75-59, 45 FR 70263, Oct. 23, 1980, unless otherwise noted.

            Editorial Note:
            Nomenclature changes to part 150 appear by USCG-2012-0832, 77 FR 59783, Oct. 1, 2012.

            § 150.105
            OMB control numbers assigned pursuant to the Paperwork Reduction Act.
            (a) Purpose. This section collects and displays the control numbers assigned to information collection and recordkeeping requirements in this subchapter by the Office of Management and Budget (OMB) pursuant to the Paperwork Reduction Act of 1980 (44 U.S.C. 3501 et seq.). The Coast Guard intends that this section comply with the requirements of 44 U.S.C. 3507(f) which requires that agencies display a current control number assigned by the Director of the OMB for each approved agency information collection requirement.
            (b) Display.

                46 CFR part or sectionwhere identified or described

                Current OMBcontrol No.

                § 150.01-15
                1625-0007

                § 153.5
                1625-0007

                § 153.905
                1625-0094

                § 153.910
                1625-0094

                § 153.968
                1625-0094

                Part 154
                1625-0029

                § 154.12
                1625-0007

            [49 FR 38121, Sept. 27, 1984, as amended by CGD 77-069, 52 FR 31626, Aug. 21, 1987; USCG-2004-18884, 69 FR 58349, Sept. 30, 2004]

            § 150.110
            Applicability.
            This subpart prescribes rules for identifying incompatible hazardous materials and rules for carrying these materials in bulk as cargo in permanently attached tanks or in tanks that are loaded or discharged while aboard the vessel. The rules apply to all vessels that carry liquid dangerous cargoes in bulk that are subject to 46 U.S.C. Chapter 37.
            [CGD 95-028, 62 FR 51209, Sept. 30, 1997]

            § 150.115
            Definitions.
            As used in this subpart: Hazardous material means:
            (a) A flammable liquid as defined in § 30.10-22 or a combustible liquid as defined in § 30.10-15 of this chapter;
            (b) A material listed in Table 151.05, Table 1 of part 153, or Table 4 of part 154 of this chapter; or
            (c) A liquid, liquefied gas, or compressed gas listed in 49 CFR 172.101.

              Person in charge means the master of a self-propelled vessel, or the person in charge of a barge.

            § 150.120
            Definition of incompatible cargoes.
            Except as described in § 150.150, a cargo of hazardous material is incompatible with another cargo listed in Table 1 if the chemical groups of the two cargoes have an “X” where their columns intersect in Figure 1 and are not shown as exceptions in Appendix I. (See also § 150.140.)
            [CGD 83-047, 50 FR 33038, Aug. 16, 1985, as amended at USCG-2013-0423, 85 FR 21674, Apr. 17, 2020]

            § 150.130
            Loading a cargo on vessels carrying cargoes with which it is incompatible.
            Except as described in § 150.160, the person in charge of a vessel shall ensure that the containment system for a cargo that is a hazardous material meets the following requirements:
            (a) The containment system must separate the hazardous material or its residue from any cargo in table 1 with which it is incompatible by two barriers such as formed by a:
            (1) Cofferdam;
            (2) Empty tank;
            (3) Void space;
            (4) Cargo handling space;
            (5) Tank containing a compatible cargo; or
            (6) Piping tunnel.
            (b) In this subpart, isolation across a cruciform joint is equivalent to isolation by two barriers.
            (c) The containment system for the hazardous material must not have a piping or venting system that connects to a containment system carrying a cargo with which the hazardous material is incompatible. Any such piping or venting system must have been separated from the containment system carrying the incompatible cargo by:
            (1) Removing a valve or spool piece and blanking off the exposed pipe ends, or
            (2) Installing two spectacle flanges in series with a means of detecting leakage into the pipe between the spectacle flanges.
            [CGD 75-59, 45 FR 70263, Oct. 23, 1980, as amended at USCG-2013-0423, 85 FR 21674, Apr. 17, 2020]

            § 150.140
            Cargoes not listed in Table 1 or 2.
            A cargo of hazardous material not listed in Table I or II must be handled as if incompatible with all other cargoes until the Commandant CG-ENG-5) (Telephone 202-372-1420) assigns the hazardous material to a compatibility group. (Table I lists cargoes alphabetically while Table II lists cargoes by compatibility group).
            [CGD 83-047, 50 FR 33038, Aug. 16, 1985, CGD 86-100, 52 FR 21037, June 4, 1987; CGD 95-072, 60 FR 50465, Sept. 29, 19955; CGD 96-041, 61 FR 50731, Sept. 27, 1996; USCG-2006-25697, 71 FR 55746, Sept. 25, 2006; USCG;-2013-0423, 85 FR 21674, Apr. 17, 2020]

            § 150.150
            Exceptions to the compatibility chart.
            The Commandant (CG-ENG-5) authorizes, on a case by case basis, exceptions to the rules in this subpart under the following conditions:
            (a) When two cargoes shown to be incompatible in Figure 1 meet the standards for a compatible pair in Appendix III, or
            (b) When two cargoes shown to be compatible in Figure 1 meet the standards for an incompatible pair in Appendix III.
            Appendix I contains cargoes which have been found to be exceptions to Figure 1, the Compatibility Chart.
            [CGD 83-047, 50 FR 33038, Aug. 16, 1985, as amended at CGD 95-072, 60 FR 50465, Sept. 29, 1995; CGD 96-041, 61 FR 50731, Sept. 27, 1996]

            § 150.160
            Carrying a cargo as an exception to the compatibility chart.
            The Operator of a vessel having on board a cargo carried as an exception under § 150.150 but not listed in Appendix I, Exceptions to the Chart, shall make sure that:
            (a) The Commandant (CG-ENG-5) has authorized by letter or message the cargo pair as an exception to the compatibility chart; and
            (b) A copy of the letter or message is on the vessel.
            [CGD 75-59, 45 FR 70263, Oct. 23, 1980, as amended by CGD 82-063b, 48 FR 4781, Feb. 3, 1983; CGD 83-047, 50 FR 33038, Aug. 16, 1985; CGD 95-072, 60 FR 50465, Sept. 29, 19955; CGD 96-041, 61 FR 50731, Sept. 27, 1996]

            § 150.170
            Right of appeal.
            Any person directly affected by a decision or action taken under this part, by or on behalf of the Coast Guard, may appeal therefrom in accordance with subpart 1.03 of this chapter.
            [CGD 88-033, 54 FR 50381, Dec. 6, 1989]

            Pt. 150, Fig. 1
            Figure 1 to Part 150—Compatibility Chart

              EC02FE91.079

            Pt. 150, Table 1
            Table 1 to Part 150—Alphabetical List of Cargoes

                Chemical name
                Group No.
                Footnote
                CHRIS Code
                Related CHRIS Codes

                Acetaldehyde
                19

                AAD

                Acetic acid
                4
                2
                AAC

                Acetic anhydride
                11
                2
                ACA

                Acetochlor
                10

                ACG

                Acetone
                18
                2
                ACT

                Acetone cyanohydrin
                0
                1, 2
                ACY

                Acetonitrile
                37

                ATN

                Acetonitrile (low purity grade)
                37
                3
                AIL

                Acetophenone
                18

                ACP

                  Acid oil mixture from soyabean, corn (maize) and sunflower oil refining, see Oil, misc.: Acid mixture from soyabean, corn (maize), and sunflower oil refining

                3

                AOM

                Acrolein
                19
                2
                ARL

                Acrylamide solution (50% or less)
                10
                3
                AAM
                AAO

                Acrylic acid
                4
                2
                ACR

                Acrylic acid/ethenesulfonic (alternately ethenesulphonic) acid copolymer with phosphonate groups, sodium salt solution
                30
                3
                APG

                Acrylonitrile
                15
                2
                ACN

                Acrylonitrile-Styrene copolymer dispersion in Polyether polyol
                20

                ALE

                Adiponitrile
                37

                ADN

                Alachlor technical (90% or more)
                33
                3
                ALH
                ALI

                Alcohol (C12-C13, branched and linear) poly(4-8) propoxy sulfates (alternately sulphates), sodium salt 25-30% solution
                41
                3
                ABL

                Alcohol (C9-C11) poly(2.5-9) ethoxylates
                20
                3
                AET
                ALY/APV/APW

                Alcohol (C6-C17) (secondary) poly(3-6) ethoxylates
                20
                3
                AEA
                AEB

                Alcohol (C6-C17) (secondary) poly(7-12) ethoxylates
                20
                3
                AEB
                AEA

                Alcohol (C12-C16) poly(1-6) ethoxylates
                20
                3
                AED
                AET/ALY/APW

                Alcohol (C12-C16) poly(7-19) ethoxylates
                20
                3
                APV
                AET/ALY/APV

                Alcohol (C12-C16) poly(20+) ethoxylates
                20
                3
                APW
                AET/ALY

                  Alcohol (C12-C15) poly (. . .) ethoxylate, see Alcohol (C12-C16) poly (. . .) ethoxylate.

                Alcohol polyethoxylates
                20

                AEA/AEB/AED/AET/APV/APW

                Alcohol polyethoxylates, secondary
                20

                AEA/AEB

                Alcoholic beverages, n.o.s.
                20
                3
                ABV

                Alcohols (C12+), primary, linear
                20
                3
                ASY
                ALR/AYK/AYL

                Alcohols (C8-C11), primary, linear, and essentially linear
                20

                ALR
                AYK/AYL

                Alcohols (C12-C13), primary, linear, and essentially linear
                20
                3
                AYK
                ALR/ASY/AYL

                Alcohols (C14-C18), primary, linear, and essentially linear
                20
                3
                AYL
                ALR/ASY/AYK

                Alcohols (C13+)
                20

                ALY
                ASY/AYK

                  Including:

                  Cetyl alcohol (Hexadecanol)

                20

                  Oleyl alcohol (Octadecenol)

                20

                  Pentadecanol

                20

                  Tallow alcohol

                20

                  Tetradecanol

                20

                  Tridecanol

                20

                Alkanes (C10-C26), linear and branched (flash point >60 °C)
                31
                3
                ABD

                Alkanes (C10-C26), linear and branched (flash point ≤ 60 °C)
                31
                3
                ABE

                Alkanes (C6-C9)
                31

                ALK

                  Including:

                  Heptanes

                31

                  Hexanes

                31

                  Nonanes

                31

                  Octanes

                31

                iso- & cyclo-Alkanes (C10-C11)
                31

                AKI

                iso- & cyclo-Alkanes (C12+)
                31

                AKJ

                n-Alkanes (C9-C11)
                31
                3

                n-Alkanes (C10+) (all isomers)
                31

                ALV
                ALJ

                  Including:

                  Decanes

                31

                  Dodecanes

                31

                  Heptadecanes

                31

                  n-Paraffins (C10-C20)

                31

                PFN
                ALJ

                  Tridecanes

                31

                  Undecanes

                31

                  Alkane (C14-C17) sulfonic (alternately sulphonic) acid, sodium salt solutions, see Sodium alkyl (C14-C17) sulfonates (alternately sulphonates) (60-65% solution)

                AKA
                SAA (AKE/SSU)

                Alkaryl polyethers (C9-C20)
                41

                AKP

                Alkenoic acid, polyhydroxy ester borated
                0
                1, 3
                AAY

                Alkenyl (C11+) amide
                10

                AKM

                Alkenyl (C8+) amine, Alkenyl (C12+) acid ester mixture
                34

                AAA

                Alkenyl (C16-C20) succinic anhydride
                11

                AAH

                Alkyl acrylate-Vinyl pyridine copolymer in Toluene
                32

                AAP

                Alkyl amine (C17+)
                7

                AKY

                Alkylaryl phosphate mixtures (more than 40% Diphenyl tolyl phosphate, less than 0.02% ortho-isomers)
                34

                ADP

                Alkylated (C4-C9) hindered phenols
                21
                3
                AYO

                Alkyl (C3-C4) benzenes
                32

                AKC

                  Including:

                  Butylbenzenes

                32
                3

                  Cumene

                32

                  Propylbenzenes

                32

                Alkyl (C5-C8) benzenes
                32

                AKD

                  Including:

                  Amylbenzenes

                32

                  Heptylbenzenes

                32

                  Hexylbenzenes

                32

                  Octylbenzenes

                32

                Alkyl (C9+) benzenes
                32

                AKB

                  Including:

                  Decylbenzenes

                32

                  Dodecylbenzenes

                32

                  Nonylbenzenes

                32

                  Tetradecylbenzenes

                32

                  Tetrapropylbenzenes

                32

                  Tridecylbenzenes

                32

                  Undecylbenzenes

                32

                Alkyl benzene distillation bottoms
                0
                1, 3
                ABB

                Alkylbenzene mixtures (containing at least 50% of Toluene)
                32
                3
                AZT

                Alkylbenzene, Alkylindane, Alkylindene mixture (each C12-C17)
                32

                AIH

                Alkyl (C11-C17) benzene sulfonic (alternately sulphonic) acid
                0
                1, 3
                ABN
                ABS/ABQ

                Alkylbenzene sulfonic (alternately sulphonic) acid (less than 4%)
                0
                1, 2
                ABQ
                ABS/ABN

                Alkylbenzene sulfonic (alternately sulphonic) acid, sodium salt solution
                33

                ABT

                Alkyl (C12+) dimethylamine
                7
                3
                ADM

                Alkyl dithiocarbamate (C19-C35)
                34
                3
                ADB

                Alkyl dithiothiadiazole (C6-C24)
                33

                ADT

                Alkyl ester copolymer (C4-C20)
                34

                AES
                AEQ

                Alkyl ester copolymer in mineral oil
                34

                AEQ
                AES

                Alkyl (C7-C9) nitrates
                34
                2
                AKN
                ONE

                Alkyl (C7-C11) phenol poly(4-12) ethoxylate
                40

                APN
                NPE

                Alkyl (C4-C9) phenols
                21

                AYI
                BLT/BTP/NNP/OPH

                  Alkyl phenol sulfide (alternately sulphide) (C8-C40), see Alkyl (C8-C40) phenol sulfide

                AKS

                Alkyl (C8-C40) phenol sulfide (alternately sulphide)
                34

                AKS

                Alkyl (C9-C15) phenyl propoxylate
                40

                AXL

                Alkyl (C8-C9) phenylamine in aromatic solvents
                9

                ALP

                  n-Alkyl phthalates, see individual phthalates

                AYS

                  Alkyl polyglucoside solution, see individual polyglucoside solutions

                AGD
                AGL/AGM/AGN/AGO/AGP

                Alkyl (C8-C10) polyglucoside solution (65% or less)
                43
                3
                AGL
                AGD/AGM/AGN/AGO/AGP

                Alkyl (C8-C10)/(C12-C14):(40% or less/60% or more) polyglucoside solution (55% or less)
                43
                3
                AGN
                AGD/AGL AGM/AGO/AGP

                Alkyl (C8-C10)/(C12-C14):(50%/50%) polyglucoside solution (55% or less)
                43
                3
                AGO
                AGD/AGL/AGN/AGP

                Alkyl (C8-C10)/(C12-C14):(60% or more/40% or less) polyglucoside solution (55% or less)
                43
                3
                AGP
                AGD/AGL/AGM/AGN/AGO

                Alkyl (C12-C14) polyglucoside solution (55% or less)
                43
                3
                AGM
                AGD/AGL/AGN/AGO/AGP

                Alkyl (C12-C16) propoxyamine ethoxylates
                8
                3
                AXE
                LPE

                Alkyl (C10-C20), saturated and unsaturated phosphite
                34

                AKL

                Alkyl succinic anhydride
                11

                AUA

                Alkyl sulfonic (alternately sulphonic) acid ester of phenol
                34

                AKH

                Alkyl toluene
                32

                AYL
                AUS

                Alkyl (C18+) toluenes
                32
                3
                AUS
                AYL

                Alkyl (C18-C28) toluenesulfonic (alternately toluenesulphonic) acid
                0
                1, 3
                AUU

                Alkyl (C18-C28) toluenesulfonic (alternately toluenesulphonic) acid, Calcium salts, borated
                34
                3
                AUB

                Alkyl (C18-C28) toluenesulfonic (alternately toluenesulphonic) acid, Calcium salts, high overbase
                33
                3
                AUC

                Alkyl (C18-C28) toluenesulfonic (alternately toluenesulphonic) acid, Calcium salts, low overbase
                33
                3
                AUL

                Allyl alcohol
                15
                2
                ALA

                Allyl chloride
                15

                ALC

                  Aluminum (alternately, Aluminium) chloride/Hydrochloric acid solution, see “Aluminum (alternately, Aluminium) chloride/Hydrogen chloride solution”

                1
                AHS
                AHG

                Aluminum (alternately Aluminium) chloride/Hydrogen chloride solution
                0
                1, 3
                AHG
                AHS

                Aluminum (alternately Aluminium) hydroxide/sodium hydroxide/sodium carbonate solution (40% or less)
                5
                3
                AHN

                Aluminum sulfate (alternately Aluminium sulphate) solution
                43
                2
                ASX
                ALM

                Amine C-6, morpholine process residue
                9

                AOI

                Aminoethyldiethanolamine/Aminoethylethanolamine solution
                8

                ADY

                2-(2-Aminoethoxy) ethanol
                8

                AEX

                Aminoethylethanolamine
                8

                AEE

                N-Aminoethylpiperazine
                7

                AEP

                2-Amino-2-hydroxymethyl-1,3-propanediol solution
                43

                AHL

                2-Amino-2-methyl-1-propanol
                8

                APZ
                APQ/APR.

                Ammonia, anhydrous
                6

                AMA

                  Ammonia, aqueous (28% or less Ammonia), see Ammonium hydroxide

                AMH

                Ammonium bisulfite (alternately bisulphite) solution (70% or less)
                43
                2
                ABX
                ASU

                Ammonium chloride solution (less than 25%)
                43
                3
                AIS
                AMC

                Ammonium hydrogen phosphate solution
                0
                1
                AMI

                Ammonium hydroxide (28% or less Ammonia)
                6

                AMH

                  Ammonium lignosulfonate (alternately lignosulphonate) solution, see also Lignin liquor

                ALG
                LNL

                Ammonium nitrate solution (45% or less)
                0
                1
                AND
                AMN/ANR/ANW

                Ammonium nitrate solution (93% or less)
                0
                1
                ANW
                AMN/AND/ANR

                  Ammonium nitrate/Urea solution (containing Ammonia), see Urea/Ammonium nitrate solution (containing 1% or more Ammonia)

                UAS (ANU/UAT/UAU/UAV)

                  Ammonium nitrate/Urea solution (not containing Ammonia), see Urea/Ammonium nitrate solution (containing less than 1% Ammonia)

                UAU (ANU/UAS/UAT/UAV)

                  Ammonium phosphate/Urea solution, see Urea/Ammonium phosphate solution

                UAP (APP/URE)

                Ammonium polyphosphate solution
                43

                AMO

                Ammonium sulfate (alternately sulphate) solution
                43

                ASW
                AME/AMS

                Ammonium sulfate (alternately sulphate) solution (20% or less)
                43

                AME
                AMS/ASW

                Ammonium sulfide (alternately sulphide) solution (45% or less)
                5
                3
                ASS
                ASF

                Ammonium thiocyanate/Ammonium thiosulfate (alternately thiosulphate) solution
                0
                1
                ACV
                ACS

                Ammonium thiosulfate (alternately thiosulphate) solution (60% or less)
                43
                3
                ATV
                ATF

                Amyl acetate (all isomers)
                34
                3
                AEC
                IAT/AML/AAS/AYA

                Amyl acid phosphate
                34

                AIA

                Amyl alcohol, primary
                20
                3
                APM
                AAI/AAL/AAN/APM/IAA

                n-Amyl alcohol
                20
                3
                AAN
                AAI/AAL/APM/ASE/IAA

                sec-Amyl alcohol
                20
                3
                ASE
                AAI/AAL/AAN/APM/IAA

                tert-Amyl alcohol
                20
                3
                AAL
                AAI/APM/ASE/IAA

                tert-Amyl methyl ether
                41

                AYE

                  Amyl methyl ketone, see Methyl amyl ketone

                AMJ
                MAK (AMK)

                  Amylene, see Pentene (all isomers)

                AMW
                PTX (AMX/AMZ/PTE)

                  tert-Amylenes, see Pentene (all isomers)

                AMZ
                PTX (AMW)

                Aniline
                9

                ANL

                Animal and Fish oils, n.o.s.
                34

                AFN

                  Including:

                  Cod liver oil

                34

                  Lanolin

                34

                  Neatsfoot oil

                34

                  Pilchard oil

                34

                  Sperm oil

                34

                Animal and Fish acid oils and distillates, n.o.s.
                34

                AFA

                  Including:

                  Animal acid oil

                34

                  Fish acid oil

                34

                  Lard acid oil

                34

                  Mixed acid oil

                34

                  Mixed general acid oil

                34

                  Mixed hard acid oil

                34

                  Mixed soft acid oil

                34

                  Anthracene oil (Coal tar fraction), see Coal tar

                AHO
                COR

                Apple juice
                43

                APJ

                Argon, liquefied
                0
                1
                ARG

                Aryl polyolefin (C11-C50)
                30

                AYF.

                Asphalt
                33

                ASP
                ACU.

                Asphalt blending stocks, roofers flux
                33

                ARF

                Asphalt blending stocks, straight run residue
                33

                ASR

                Asphalt emulsion
                33

                ASQ

                Asphalt, Kerosene, and other components
                33

                AKO

                Aviation alkylates (C8 paraffins and isoparaffins BPT 95-120 °C)
                33
                3
                AVA
                GAK/GAV

                Barium long-chain (C11-C50) alkaryl sulfonate (alternately sulphonate)
                34

                BCA

                Barium long-chain alkyl (C8-C14) phenate sulfide (alternately sulphide)
                34

                BCH

                Behenyl alcohol
                20

                BHY

                Benzene
                32
                2
                BNZ
                BHA/BHB/PYG.

                Benzene and mixtures having 10% Benzene or more
                32

                BHB
                BHA/BNZ/PYG.

                Benzene hydrocarbon mixtures (containing Acetylenes) (having 10% Benzene or more)
                32

                BHA
                BHB/BNZ/PYG

                Benzene/Toluene/Xylene mixtures (having 10% Benzene or more)
                32

                BTX
                BHB/BNZ/PYG/TOL/XLX/XLM/XLO/XLP

                Benzenesulfonyl (alternately Benzenesulphonyl) chloride
                0
                1, 2
                BSC

                Benzenetricarboxylic acid, trioctyl ester
                34

                BCE

                Benzyl acetate
                34

                BZE

                Benzyl alcohol
                21

                BAL

                Benzyl chloride
                36

                BCL

                Bio-fuel blends of Diesel/gas oil and Alkanes (C10-C26), linear and branched with a flash point >60 °C (>25% but <99% by volume)
                33
                3
                BIF
                BIG/BIH/BII/BIJ/BIK

                Bio-fuel blends of Diesel/gas oil and Alkanes (C10-C26), linear and branched with a flash point ≤ 60 °C (>25% but <99% by volume)
                33
                3
                BIG
                BIF/BIH/BII/BIJ/BIK

                Bio-fuel blends of Diesel/gas oil and FAME (>25% but <99% by volume)
                34
                3
                BIH
                BIF/BIG/BII/BIJ/BIK

                Bio-fuel blends of Diesel/gas oil and vegetable oil (>25% but <99% by volume)
                34
                3
                BII
                BIF/BIG/BIH/BIJ/BIK

                Bio-fuel blends of Gasoline and Ethyl alcohol (>25% but <99% by volume)
                20
                2, 3
                BIJ
                BIF/BIG/BIH/BII/BIK

                Bis (2-ethylhexyl) terephthalate
                34

                DHH

                Boronated Calcium sulfonate (alternately sulphonate)
                34

                BCU

                Brake fluid base mix: Poly(2-8)alkylene (C2-C3) glycols/Polyalkylene (C2-C10) glycols monoalkyl (C1-C4) ethers and their borate esters
                20
                3
                BFY

                Brominated Epoxy Resin in Acetone
                16

                BER

                Bromochloromethane
                36

                BCM

                Butadiene (all isomers)
                30

                BDI

                Butadiene/Butylene mixtures (containing Acetylenes)
                30

                BBM
                BBX/BDI/BTN/IBL.

                Butane (all isomers)
                31

                BMX
                IBT/BUT.

                Butane/Propane mixture
                31

                BUP
                LPG

                  1,4-Butanediol, see Butylene glycol

                BDO
                BUG

                  2-Butanone, see Methyl ethyl ketone

                2

                MEK

                Butene oligomer
                30

                BOL

                  Butene, see Butylenes (all isomers)

                BUT/IBL

                2-Butoxyethanol (58%)/Hyperbranched polyesteramide (42%) (mixture)
                20

                Butyl acetate (all isomers)
                34
                3
                BAX
                BCN/BTA/BYA/IBA

                Butyl acrylate (all isomers)
                14
                3
                BAR
                BAI/BTC

                Butyl alcohol (all isomers)
                20
                2
                BAY
                BAN/BAS/BAT/IAL

                  Butyl alcohol (iso-, n-, sec-, tert-), see Butyl alcohol (all isomers)

                2

                BAN/BAS/BAT/BAY/IAL

                Butylamine (all isomers)
                7
                3
                BTY
                BAM/BTL/BUA/IAM

                  Butylbenzene (all isomers), see Alkyl (C3-C4) benzenes

                3
                BBE
                AKC

                Butyl benzyl phthalate
                34

                BPH

                Butyl butyrate (all isomers)
                34
                3
                BBA
                BIB/BUB

                Butylene glycol
                20
                2
                BUG
                BDO

                1,2-Butylene oxide
                16

                BTO

                Butylenes (all isomers)
                30

                BTN
                IBL

                n-Butyl ether
                41
                3
                BTE

                n *-Butyl ether
                41

                BTE

                  iso-Butyl formate, see Isobutyl formate

                3
                BFI
                BFN/BFO

                n-Butyl formate
                34

                BFN
                BFI/BFO.

                Butyl heptyl ketone
                18

                BHK

                Butyl methacrylate
                14

                BMH
                BMI/BMN.

                  Butyl methacrylate, Decyl methacrylate, Cetyl-Eicosyl methacrylate mixture, see Butyl/Decyl/Cetyl/Eicosyl methacrylate mixture

                3

                DER (BMH/BMI/BMN/CEM)

                Butyl/Decyl/Cetyl/Eicosyl methacrylate mixture
                14
                3
                DER
                BMH/BMI/BMN/CEM

                  Butyl methyl ketone, see Methyl butyl ketone

                2

                MBJ (MBK/MIK)

                Butyl phenol, Formaldehyde resin in Xylene
                32

                n-Butyl propionate
                34

                BPN

                Butyl stearate
                34

                BST

                Butyl toluene
                32

                BUE

                Butyraldehyde (all isomers)
                19
                3
                BAE
                BAD/BTR

                Butyric acid
                4

                BRA
                IBR.

                gamma-Butyrolactone
                0
                1, 2
                BLA

                C9 Resinfeed (DSM)
                32
                2
                CNR

                  Calcium alkaryl sulfonate (alternately sulphonate) (C11-C50), see Calcium long-chain alkaryl sulfonate (alternately sulphonate) (C11-C50)

                3
                CAE
                CAY

                Calcium alkyl (C9) phenol sulfide (alternately sulphide), polyolefin phosphorosulfide (alternately phosphorosulphide) mixture
                34

                CPX.

                Calcium alkyl (C10-C28) salicylate
                34
                3
                CAJ.

                  Calcium bromide solution, see Drilling brines

                CBI
                DRB

                  Calcium alkyl salicylate, see Calcium long-chain alkyl salicylate (C13 + ), Calcium long-chain alkyl (C18-C28) salicylate, or Calcium alkyl (C10-C28) salicylate
                34

                CAJ/CAK/CAZ.

                  Calcium bromide solution, see Drilling brines

                CBI
                DRB

                  Calcium bromide/Zinc bromide solution, see Drilling brine (containing Zinc salts)

                DZB

                Calcium carbonate slurry
                34

                CSR

                  Calcium chloride solution, see Drilling brines

                CCS
                CLC

                Calcium hydroxide slurry
                5

                COH
                CAH.

                Calcium hypochlorite solution (15% or less)
                5
                3
                CHU
                CHY/CHZ

                Calcium hypochlorite solution (more than 15%)
                5
                3
                CHZ
                CHU/CHY

                  Calcium lignosulfonate (alternately lignosulphonate) solution, see also Lignin liquor

                CLL
                LNL

                Calcium long-chain alkaryl sulfonate (alternately sulphonate) (C11-C50)
                34

                CAY

                  Calcium long-chain alkyl (C8-C40) phenate, see Calcium long-chain alkyl (C5-C10) phenate or Calcium long-chain alkyl (C11-C40) phenate

                CAQ
                CAU/CAV (CAN/CAW)

                Calcium long-chain alkyl (C5-C10) phenate
                34
                3
                CAU
                CAN/CAQ/CAV/CAW

                Calcium long-chain alkyl (C5-C20) phenate
                34

                CAV
                CAN/CAQ/CAU/CAW

                Calcium long-chain alkyl (C11-C40) phenate
                34
                3
                CAW
                CAN/CAQ/CAU/CAV

                Calcium long-chain alkyl phenate sulfide (alternately sulphide) (C8-C40)
                34

                CPI

                Calcium long-chain alkyl phenolic amine (C8-C40)
                9

                CPQ

                Calcium long-chain alkyl (C18-C28) salicylate
                34
                3
                CAJ

                Calcium long-chain alkyl salicylate (C13+)
                34

                CAK
                CAJ/CAZ

                Calcium nitrate solutions (50% or less)
                34
                3
                CNU
                CNT

                Calcium nitrate/Magnesium nitrate/Potassium chloride solution
                34

                CLM
                CNT/CNU/MGN/MGO/PCS/PCU/PSD.

                Calcium salts of fatty acids
                34

                CFF

                Calcium stearate
                34

                CSE

                Calcium sulfonate (alternately sulphonate)/Calcium carbonate/Hydrocarbon solvent mixture
                33

                CSH

                  Camelina oil, see Oil, misc.: Camelina

                3
                CEL

                Camphor oil (light)
                18

                CPO

                  Canola oil, see Oil, edible: Rapeseed (low erucic acid containing less than 4% free fatty acids)

                ORO (ORP)

                  Caprolactam solution, see epsilon-Caprolactam (molten or aqueous solutions)

                CLS

                epsilon-Caprolactam (molten or aqueous solutions)
                22
                3
                CLU
                CLS

                Caramel solutions
                43

                CML

                Carbolic oil
                21

                CBO

                Carbon dioxide (high purity)
                0
                1
                CDH
                CDO/CDQ

                Carbon dioxide (reclaimed quality)
                0
                1
                CDQ
                CDH/CDO

                Carbon dioxide, liquefied
                0
                1
                CDO
                CDH/CDQ

                Carbon disulfide (alternately disulphide)
                38

                CBB

                Carbon tetrachloride
                36
                2
                CBT
                CBU

                  Cashew nut shell oil (untreated), see Oil, misc.: Cashew nut shell (untreated)

                OCN

                  Castor oil, see Oil, edible: Castor
                34

                OCA (VEO).

                Catoxid feedstock
                36
                2
                CXF

                Caustic potash solution
                5
                2
                CPS

                Caustic soda solution
                5
                2
                CSS

                Cesium formate solution
                43
                3
                CSM

                  Cetyl alcohol (Hexadecanol), see Alcohols (C13+)

                ALY (ASY/AYL)

                  Cetyl alcohol, see Alcohols (C13 + )
                20

                ALY (ASY/AYL).

                Cetyl/Eicosyl methacrylate mixture
                14
                1
                CEM

                  Cetyl/Stearyl alcohol, see Alcohols (C13+)

                ALY (ASY/AYL)

                Chlorinated paraffins (C10-C13)
                36

                CLH
                CLG/CLJ/CLQ.

                Chlorinated paraffins (C14-C17) (with 50% Chlorine or more, and less than 1% C13 or shorter chains)
                36
                3
                CLJ
                CLG/CLH/CLQ

                Chlorinated paraffins (C14-C17) (with 52% Chlorine)
                36

                CLQ
                CLG/CLH/CLJ.

                Chlorinated paraffins (C18+) with any level of chlorine
                36

                CLG
                CLH/CLJ

                Chlorine
                0
                1
                CLX

                Chloroacetic acid (80% or less)
                4
                3
                CHM
                CHL/MCA

                Chlorobenzene
                36
                2
                CRB

                  Chlorodifluoromethane, see Monochlorodifluoromethane

                MCF

                2-Chloro-4-ethylamino-6-isopropylamino-5-triazine solution
                0
                1
                CET

                1-(4-Chlorophenyl)-4,4-dimethyl pentan-3-one
                18
                2
                CDP

                2- or 3-Chloropropionic acid
                4

                CPM
                CLA/CLP

                Chloroform
                36

                CRF

                Chlorohydrins (crude)
                17
                3
                CHD

                4-Chloro-2-methylphenoxyacetic acid, dimethylamine salt solution
                9

                CDM

                o-Chloronitrobenzene
                42

                CNO
                CNP

                Chlorosulfonic (alternately Chlorosulphonic) acid
                0
                1
                CSA

                m-Chlorotoluene
                36
                3
                CTM
                CHI/CRN/CTO

                o-Chlorotoluene
                36
                3
                CTO
                CHI/CRN/CTM

                p-Chlorotoluene
                36
                3
                CRN
                CHI/CTM/CTO

                Chlorotoluenes (mixed isomers)
                36
                3
                CHI
                CRN/CTM/CTO

                Choline chloride solutions
                20

                CCO

                Citric acid (70% or less)
                4
                3
                CIS
                CIT

                Clay slurry
                43

                CLY

                Coal slurry
                43

                COG
                COA.

                Coal tar
                33

                COR
                OCT.

                Coal tar crude bases
                33

                CTB

                  Coal tar distillate, see Naphtha: Coal tar solvent

                CDL
                NCT (CTU)

                  Coal tar naphtha solvent, see Naphtha: Coal tar solvent

                NCT (CDL/CTU)

                Coal tar pitch (molten)
                33
                3
                CTP

                Coal tar, high temperature
                33

                CHH

                Cobalt naphthenate in solvent naphtha
                34

                CNS

                  Cocoa butter, see Oil, edible: Cocoa butter

                OCB (VEO)

                  Coconut oil, see Oil, edible: Coconut

                OCC (VEO)

                  Coconut oil, fatty acid, see Oil, misc.: Coconut fatty acid

                2

                CFA

                  Coconut oil, fatty acid methyl ester, see Oil, misc.: Coconut fatty acid methyl ester

                3

                OCM

                Copper salt of long-chain (C17 + ) alkanoic acid
                34

                CUS
                CFT.

                Copper salt of long-chain (C3-C16) fatty acid
                34

                CFT
                CUS.

                  Corn oil, see Oil, edible: Corn

                OCO (VEO)

                Corn syrup
                43

                CSY

                  Cottonseed oil, see Oil, edible: Cottonseed

                OCS (VEO)

                  Cottonseed oil, fatty acid, see Oil, misc.: Cottonseed oil, fatty acid

                CFY

                Creosote
                21
                2
                CCW
                CCT/CWD

                Creosote (coal tar)
                21
                2, 3
                CCT
                CCW

                Creosote (wood tar)
                21
                2, 3
                CWD
                CCT/CCW

                Cresols (all isomers)
                21
                3
                CRS
                CFO/CFP/CRL/CRO/CSC/CSO

                  Cresols with 5% or more Phenol, see Phenol

                CFP
                PHN (CFO/CRL/CRO/CRS/CSO)

                  Cresols with less than 5% Phenol, see Cresols (all isomers)

                CFO
                CRS (CFP/CRL/CRO/CSO)

                  Cresylate spent caustic, see Cresylic acid, sodium salt solution

                2
                CSC
                CYD

                Cresylic acid
                21

                CRY

                Cresylic acid, dephenolized
                21

                CAD
                CRY/CYN

                Cresylic acid tar
                21

                CRX

                Cresylic acid with 5% or more phenol
                21

                CYN
                CAD/CRY

                Cresylic acid, sodium salt solution
                5
                2
                CYD
                CSC

                Crotonaldehyde
                19
                2
                CTA

                  Crude Isononylaldehyde, see Isononyldehyde (crude)

                INC

                Crude Isopropanol
                20

                IPB (IPA/PAL)

                  Crude Piperazine, see Piperazine (crude)

                PZC (PPZ/PIZ)

                  Cumene, see Alkyl(C3-C4) benzenes

                CUM
                AKD (PBY/PBZ)

                1,5,9-Cyclododecatriene
                30

                CYT

                Cycloheptane
                31

                CYE

                Cyclohexane
                31

                CHX

                Cyclohexanol
                20

                CHN

                Cyclohexanone
                18
                2
                CCH

                Cyclohexanone/Cyclohexanol mixtures
                18
                2
                CYX

                Cyclohexyl acetate
                34

                CYC

                Cyclopentadiene/Styrene/Benzene mixture
                30

                CSB

                1,3-Cyclopentadiene dimer (molten)
                30
                3
                CPD
                DPT/DPV

                Cyclopentane
                31

                CYP

                Cyclopentene
                30

                CPE.

                p-Cymene
                32

                CMP

                Decahydronaphthalene
                33

                DHN

                Decaldehyde
                19

                DAY
                IDA/DAL.

                  iso-Decaldehyde, see Isodecaldehyde.

                n-Decaldehyde
                19

                  Decane (all isomers), see n-Alkanes (C10+) (all isomers)

                DCC
                ALV (ALJ)

                Decanoic acid
                4

                DCO
                NEA.

                Decene
                30

                DCE

                Decyl acetate
                34

                DYA

                Decyl acrylate
                14

                DAT
                IAI/DAR.

                Decyl alcohol (all isomers)
                20
                2, 3
                DAX
                ISA/DAN

                Decyl/Dodecyl/Tetradecyl alcohol mixture
                20
                3
                DYO
                DAN/DAX/DDN/ISA

                  Decylbenzene, see Alkyl (C9+) benzenes

                DBZ
                AKB

                Decyloxytetrahydrothiophene dioxide
                0
                1
                DHT

                Detergent alkylate
                32

                DKY
                AKB/DBZ/DDB/TDB/TRB/UDB.

                  Dextrose solution, see Glucose solution

                DTS
                GLU

                Diacetone alcohol
                20
                2
                DAA

                  Dialkyl (C10-C14) benzenes, see Alkyl (C9+) benzenes

                DAB
                AKB

                Dialkyl(C8-C9) diphenylamines
                9

                DAQ

                Dialkyl (C7-C13) phthalates
                34

                DAH

                  Including:

                  Di-(2-ethylhexyl) phthalate

                34

                  Diheptyl phthalate

                34

                  Dihexyl phthalate

                34

                  Diisooctyl phthalate

                34

                  Diisodecyl phthalate

                34

                  Diisononyl phthalate

                34

                  Dinonyl phthalate

                34

                  Dioctyl phthalate

                34

                  Ditridecyl phthalate

                34

                  Diundecyl phthalate

                34

                  Dialkyl (C9-C10) phthalates, see Dialkyl (C7-C13) phthalates

                DLK
                DLH (DAP/DHL/DHP/DID/DIE/DIF/DIN/DIO/DIT/DOP/DPA/DTP/DUP)

                Dialkyl thiophosphates sodium salts solution
                34
                3
                DYH

                Dibromomethane
                36

                DBH

                  Dibutyl carbinol, see Nonyl alcohol (all isomers)

                NNS (DBC/NNI/NNN)

                Dibutyl hydrogen phosphonate
                34

                DHD

                Dibutyl phthalate
                34

                DPA
                DIT

                Dibutyl terephthalate
                34
                3
                DYE

                Dibutylamine
                7

                DBA

                Dibutylphenols
                21

                DBT

                Di-tert-butylphenol
                21

                DBF
                DBT/DBV/DBW

                2,4-Di-tert-butylphenol
                21

                DBV
                DBF/DBT/DBW

                2,6-Di-tert-butylphenol
                21
                3
                DBW
                DBF/DBT/DBV

                Dichlorobenzene (all isomers)
                36
                3
                DBX
                DBM/DBO/DBP

                3,4-Dichloro-1-butene
                36

                DCD
                DCB.

                Dichlorodifluoromethane
                36

                DCF

                1,1-Dichloroethane
                36

                DCH

                Dichloroethyl ether
                41
                3
                DYR
                DEE

                1,6-Dichlorohexane
                36

                DHX

                2,2′-Dichloroisopropyl ether
                41

                DCI

                Dichloromethane
                36
                2
                DCM

                2,4-Dichlorophenol
                21

                DCP

                2,4-Dichlorophenoxyacetic acid/Diethanolamine salt solution
                43

                DDE

                2,4-Dichlorophenoxyacetic acid/Dimethylamine salt solution (70% or less)
                0
                1, 2, 3
                DDA
                DAD/DSX

                2,4-Dichlorophenoxyacetic acid/Triisopropanolamine salt solution
                43
                2
                DTI

                1,1-Dichloropropane
                36

                DPB
                DPC/DPL/DPP/DPX

                1,2-Dichloropropane
                36
                2, 3
                DPP
                DPB/DPC/DPL/DPX

                1,3-Dichloropropane
                36

                DPC
                DPB/DPL/DPP/DPX

                Dichloropropene (all isomers)
                15

                DCW
                DPF/DPU.

                1,3-Dichloropropene
                15

                DCW/DPF.

                Dichloropropene/Dichloropropane mixtures
                15

                DMX
                DCW/DPB/DPC/DPL/DPP/DPU/DPX.

                2,2-Dichloropropionic acid
                4

                DCN

                Dicyclopentadiene, Resin Grade, 81-89%
                30
                3
                DPV
                CPD/DPT

                  Dicyclopentadiene, see 1,3-Cyclopentadiene dimer (molten)

                DPT
                CPD (DPV)

                Diethanolamine
                8
                2
                DEA

                  Diethanolamine salt of 2,4-Dichlorophenoxyacetic acid solution, see 2,4-Dichlorophenoxyacetic acid, Diethanolamine salt solution

                DZZ
                DDE

                Diethylamine
                7

                DEN

                Diethylaminoethanol
                8

                DAE

                2,6-Diethylaniline
                9

                DMN
                DIY.

                Diethylbenzene
                32

                DEB

                Diethylene glycol
                40
                2
                DEG

                  Diethylene glycol butyl ether, see Poly(2-8)alkylene glycol monoalkyl (C1-C6) ether

                DME
                PAG

                  Diethylene glycol butyl ether acetate, see Poly(2-8)alkylene glycol monoalkyl (C1-C6) ether acetate

                DEM
                PAF

                Diethylene glycol dibenzoate
                34

                DGZ

                Diethylene glycol dibutyl ether
                40

                DIG

                Diethylene glycol diethyl ether
                40

                DGS

                  Diethylene glycol ethyl ether, see Poly(2-8)alkylene glycol monoalkyl (C1-C6) ether

                DGE
                PAG

                  Diethylene glycol ethyl ether acetate, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether acetate

                DGA
                PAF

                  Diethylene glycol n-hexyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether

                DHE
                PAG

                  Diethylene glycol methyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether

                DGM
                PAG

                  Diethylene glycol methyl ether acetate, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether acetate

                DGR
                PAF

                Diethylene glycol phenyl ether
                40

                DGP

                Diethylene glycol phthalate
                34

                DGL

                  Diethylene glycol propyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether

                DGO
                PAG

                Diethylenetriamine
                7
                2
                DET

                Diethylenetriaminepentaacetic acid, pentasodium salt solution
                43

                DYS

                  Diethylethanolamine, see Diethylaminoethanol

                DAE

                Diethyl ether
                8

                EET

                  Diethyl hexanol, see Decyl alcohol (all isomers)

                DAX

                Di-(2-ethylhexyl) adipate
                34

                DEH

                Di-(2-ethylhexyl) phosphoric acid
                1

                DEP

                  Di-(2-ethylhexyl) phthalate, see Dialkyl (C7-C13) phthalate

                DIE
                DAH

                Di-(2-ethylhexyl) terephthalate
                34

                DHH

                Diethyl phthalate
                34

                DPH

                Diethyl sulfate (alternately sulphate)
                34

                DSU

                Diglycidyl ether of Bisphenol A
                16

                BDE

                Diglycidyl ether of Bisphenol F
                16

                DGF

                  Diheptyl phthalate, see Dialkyl (C7-C13) phthalate

                DHP
                DAH

                Di-n-hexyl adipate
                34

                DHA

                  Dihexyl phthalate, see Dialkyl (C7-C13) phthalate

                DHL

                  Diisobutyl carbinol, see Nonyl alcohol (all isomers)

                DBC
                NNS

                Diisobutyl ketone
                18

                DIK

                Diisobutyl phthalate
                34

                DIT
                DPA

                Diisobutylamine
                7

                DBU

                Diisobutylene
                30

                DBL

                  Diisodecyl phthalate, see Dialkyl (C7-C13) phthalates

                DID
                DAH

                1,4-Dihydro-9,10-dihydroxy anthracene, disodium salt solution
                5

                DDH

                Diisononyl adipate
                34

                DNY

                  Diisononyl phthalate, see Dialkyl (C7-C13) phthalates

                2
                DIN
                DAH

                  Diisooctyl phthalate, see Dialkyl (C7-C13) phthalate

                DIO
                DAH/(DIE/DOP)

                Diisopropanolamine
                8

                DIP

                Diisopropylamine
                7

                DIA
                DNA.

                Diisopropylbenzene (all isomers)
                32

                DIX

                Diisopropylnaphthalene
                32

                DII

                1,4-Dihydro-9,10-dihydroxy anthracene, disodium salt solution
                5

                DDH

                N,N-Dimethylacetamide
                10

                DAC
                DLS

                N,N-Dimethylacetamide solution (40% or less)
                10
                3
                DLS
                DAL.

                Dimethyl adipate
                34

                DLA

                Dimethylamine
                7

                DMA
                DMC/DMG/DMY.

                  Dimethylamine salt of 4-Chloro-2-methylphenoxyacetic acid solution, see 4-Chloro-2-methylphenoxyacetic acid, Dimethylamine salt solution

                CDM

                  Dimethylamine salt of 2,4-Dichlorophenoxyacetic acid solution, see 2,4-Dichlorophenoxyacetic acid, Dimethylamine salt solution (70% or less)

                DAD
                DDA (DSX)

                Dimethylamine solution (45% or less)
                7
                3
                DMG
                DMA/DMC/DMY

                Dimethylamine solution (greater than 45% but not greater than 55%)
                7
                3
                DMY
                DMA/DMC/DMG

                Dimethylamine solution (greater than 55% but not greater than 65%)
                7
                3
                DMC
                DMA/DMG/DMY

                2,6-Dimethylaniline
                9

                DMM
                DDL

                  Dimethylbenzene, see Xylenes

                2

                XLX/XLM/XLO/XLP

                Dimethylcyclicsiloxane hydrolyzate
                34

                DXZ

                N,N-Dimethylcyclohexylamine
                7

                DXN

                Dimethyl disulfide (alternately disulphide)
                0
                1, 2, 3
                DSK

                  Dimethyldodecylamine, see N,N-Dimethyldodecylamine
                7

                DDY.

                N,N-Dimethyldodecylamine
                7

                DDY

                Dimethylethanolamine
                8

                DMB

                Dimethyl ether
                41

                DIM

                Dimethylformamide
                10
                2
                DMF

                Dimethyl furan
                41

                DFU

                Dimethyl glutarate
                34

                DGT

                Dimethyl hydrogen phosphite
                34
                2
                DPI

                Dimethyl naphthalene sulfonic (alternately sulphonic) acid, sodium salt solution
                34
                2
                DNS

                Dimethyl octanoic acid
                4

                DMO

                Dimethyl phthalate
                34

                DTL

                  Dimethylpolysiloxane, see Polydimethylsiloxane

                DMP

                2,2-Dimethylpropane-1,3-diol (molten or solution)
                20
                3
                DDI

                Dimethyl succinate
                34

                DSE

                Dinitrotoluene (molten)
                42
                3
                DNM
                DNL/DNU/DTT

                  Dinonyl phthalate, see Dialkyl (C7-C13) phthalates

                DIF
                DAH

                  Dioctyl phthalate, see Dialkyl (C7-C13) phthalates

                DOP
                DAH (DIE/DIO)

                1,4-Dioxane
                41

                DOX

                Dipentene
                30

                DPN

                Diphenyl
                32

                DIL

                Diphenylamine (molten)
                9

                DAG
                DAM.

                Diphenylamine, reaction product with 2,2,4-trimethylpentene
                9

                DAK

                Diphenylamines, alkylated
                9

                DAJ

                Diphenyl/Diphenyl ether mixtures
                33

                DDO

                Diphenyl ether
                41

                DPE

                  Diphenyl ether/Biphenyl ether mixture, see Diphenyl/Diphenyl ether mixture

                DDO

                Diphenyl ether/Diphenyl phenyl ether mixture
                41

                DOB

                Diphenylmethane diisocyanate
                12
                2
                DPM

                  Diphenyl oxide, see Diphenyl ether

                DPE

                Diphenylol propane-Epichlorohydrin resins
                0
                1
                DPR

                Di-n-propylamine
                7

                DNA
                DIA

                Dipropylene glycol
                40

                DPG

                  Dipropylene glycol butyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether

                DBG
                PAG

                Dipropylene glycol dibenzoate
                34

                DGY

                  Dipropylene glycol methyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether

                DPY
                PAG

                Distillates, flashed feed stocks
                33

                DFF

                Distillates, straight run
                33

                DSR

                Di-tert-butyl phenol
                21

                DBF
                DBT/DBV/DBW.

                2,4-Di-tert-butyl phenol
                21

                DBV
                DBF/DBT/DBW.

                2,6-Di-tert-butyl phenol
                21

                DBW
                DBF/DBT/DBV.

                Dithiocarbamate ester (C7-C35)
                34

                DHO

                Ditridecyl adipate
                34

                DTY

                  Ditridecyl phthalate, see Dialkyl (C7-C13) phthalate

                DTP
                DAH

                  Diundecyl phthalate, see Dialkyl (C7-C13) phthalates

                DUP
                DAH

                  Dodecane (all isomers), see n-Alkanes (C10+) (all isomers)

                DOF
                ALV (ALJ/DOC)

                tert-Dodecanethiol
                20
                2
                DDL
                LRM

                Dodecene (all isomers)
                30
                3
                DOZ
                DDC/DOD

                  Dodecanol (all isomers), see Dodecyl alcohol (all isomers)

                2
                DDN
                LAL

                2-Dodecenylsuccinic acid, dipotassium salt solution
                34

                DSP

                Dodecyl alcohol (all isomers)
                20
                2
                DDN
                ASK/ASY/LAL

                Dodecylamine/Tetradecylamine mixture
                7
                2
                DTA

                  Dodecylbenzene, see Alkyl (C9+)

                Dodecylbenzenesulfonic (alternately Dedecylbenzenesulphonic) acid
                0
                1, 2
                DSA

                Dodecyldimethylamine/Tetradecyldimethylamine mixture
                7

                DOT

                Dodecyl diphenyl ether disulfonate (alternately disulphonate) solution
                43

                DTA

                Dodecyl hydroxypropyl sulfide (alternately sulphide)
                0
                1
                DOH

                Dodecyl methacrylate
                14

                DDM

                Dodecyl/Octadecyl methacrylate mixture
                14

                DOM
                DDM.

                Dodecyl/Pentadecyl methacrylate mixture
                14

                DDP

                Dodecyl phenol
                21

                DOL

                Dodecyl xylene
                32

                DXY

                Drilling brines (containing Calcium, Potassium or Sodium salts)
                43

                DRL
                DRB/DRS.

                Drilling brines (containing Zinc salts)
                43

                DZB
                DRB.

                Drilling brines, including: Calcium bromide solution, Calcium chloride solution and Sodium chloride solution
                43
                3

                DRS/DRL

                Drilling mud (low toxicity) (if flammable or combustible)
                33

                DRO
                DRM/DRN/DRP.

                Drilling mud (low toxicity) (if non-flammable or non-combustible)
                43

                DRP
                DRM/DRN/DRO.

                Epichlorohydrin
                17

                EPC

                Epoxy resin
                16

                EPN

                  ETBE, see Ethyl tert-butyl ether

                EBE

                Ethane
                31

                ETH

                Ethanolamine
                8

                MEA

                  2-Ethoxyethanol, see Ethylene glycol monoalkyl ethers

                EEO
                EGC (EGE)

                2-Ethoxyethyl acetate
                34
                2
                EEA
                EGA.

                Ethoxylated alkyloxy alkyl amine
                8

                ELM

                  Ethoxylated alcohols, C11-C15, see alcohol polyethoxylates

                AEA/AEB/AED/AET/APV/APW/APX

                Ethoxylated long-chain (C16+) alkyloxyalkylamine
                8

                ELA

                Ethoxylated tallow alkyl amine
                7

                TAY
                TAG/TAR

                Ethoxylated tallow alkyl amine, glycol mixture
                7

                TAG
                TAR/TAY

                Ethoxylated tallow amine (> 95%)
                7
                3
                TAR
                TAG/TAY

                  Ethoxy triglycol, see Poly(2-8)alkylene glycol monoalkyl (C1-C6) ether

                ETG
                PAG (ETR/TGE)

                Ethoxy triglycol (crude)
                40

                ETR

                Ethyl acetate
                34
                2
                ETA

                Ethyl acetoacetate
                34

                EAA

                Ethyl acrylate
                14
                2
                EAC

                Ethyl alcohol
                20
                2
                EAL

                Ethylamine
                7
                2
                EAM
                EAN/EAO.

                Ethylamine solution (72% or less)
                7
                3
                EAN
                EAM/EAO

                Ethyl amyl ketone
                18

                EAK
                ELK.

                Ethylbenzene
                32

                ETB

                Ethyl butanol
                20

                EBT

                N-Ethylbutylamine
                7

                EBA

                Ethyl tert-butyl ether
                41
                2
                EBE

                Ethyl butyrate
                34

                EBR

                Ethyl chloride
                36

                ECL

                Ethyl cyclohexane
                31

                ECY

                N-Ethylcyclohexylamine
                7

                ECC

                2-Ethyl-2-(2,4-dichlorophenoxy) acetate
                34

                EDY

                2-Ethyl-2-(2,4-dichlorophenoxy) propionate
                34

                EDP

                S-Ethyl dipropylthiocarbamate
                34
                3
                ECB

                Ethylene
                30

                ETL

                Ethyleneamine EA 1302
                7
                2
                EMX

                Ethylene carbonate
                34

                ECR

                Ethylene chlorohydrin
                20

                ECH

                Ethylene cyanohydrin
                20
                2
                ETC

                Ethylenediamine
                7
                2
                EDA
                EMX.

                Ethylenediaminetetraacetic acid/tetrasodium salt solution
                43

                EDS

                Ethylene dibromide
                36

                EDB

                Ethylene dichloride
                36
                2
                EDC

                Ethylene glycol
                20
                2
                EGL
                EAG.

                Ethylene glycol acetate
                34

                EGO

                  Ethylene glycol butyl ether, see Ethylene glycol monoalkyl ethers

                EGM
                EGC

                  Ethylene glycol tert-butyl ether, see Ethylene glycol monoalkyl ethers

                EGG
                EGC

                Ethylene glycol butyl ether acetate
                34

                EMA

                Ethylene glycol diacetate
                34

                EGY

                Ethylene glycol dibutyl ether
                40

                EGB

                  Ethylene glycol ethyl ether, see Ethyl glycol monoalkyl ethers

                EGE
                EGC/EEO

                  Ethylene glycol ethyl ether acetate, see 2-Ethoxyethyl acetate

                EGA
                EEA

                  Ethylene glycol hexyl ether, see Ethylene glycol monoalkyl ethers

                EGH
                EGC

                  Ethylene glycol isobutyl ether, see Ethylene glycol monoalkyl ethers

                EGC (EGG/EGM)

                  Ethylene glycol isopropyl ether, see Ethylene glycol monoalkyl ethers

                EGI
                EGC

                  Ethylene glycol methyl butyl ether, see Ethylene glycol monoalkyl ethers

                EMB
                EGC

                  Ethylene glycol methyl ether, see Ethylene glycol monoalkyl ethers

                EME
                EGC

                Ethylene glycol methyl ether acetate
                34

                EGT

                Ethylene glycol monoalkyl ethers
                40
                2
                EGC

                  Including:

                  Ethylene glycol butyl ether

                40

                  Ethylene glycol tert-butyl ether

                40

                  Ethylene glycol ethyl ether

                40

                  Ethylene glycol hexyl ether

                40

                  Ethylene glycol isobutyl ether

                40

                  Ethylene glycol isopropyl ether

                40

                  Ethylene glycol methyl ether

                40

                  Ethylene glycol methyl butyl ether

                40

                  Ethylene glycol propyl ether

                40

                Ethylene glycol phenyl ether
                40

                EPE

                Ethylene glycol phenyl ether/Diethylene glycol phenyl ether mixture
                40

                EDX

                  Ethylene glycol propyl ether, see Ethylene glycol monoalkyl ethers

                EGP
                EGC/EGI/EGN

                  Ethylene glycol n-propyl ether, see Ethylene glycol monoalkyl ethers

                EGN
                EGC (EGI/EGP)

                Ethylene oxide
                0
                1
                EOX

                Ethylene oxide/Propylene oxide mixture
                16

                EPF
                EPM.

                Ethylene oxide/Propylene oxide mixture with an Ethylene oxide content not more than 30% by mass
                16
                3
                EPM
                EPF

                Ethylene-Propylene copolymer (in liquid mixtures)
                31

                EPY

                Ethylene-Vinyl acetate copolymer (emulsion)
                43

                ECV

                  Ethyl ether, see Diethyl ether

                EET

                Ethyl-3-ethoxypropionate
                34

                EEP

                  2-Ethylhexaldehyde, see Octyl aldehydes

                EHA
                OAL (OLX)

                  2-Ethylhexanoic acid, see Octanoic acid (all isomers)

                EHO
                OAY (OAA)

                  2-Ethylhexanol, see Octanol

                EHX
                OCA (OTA)

                2-Ethylhexyl acrylate
                14

                EAI

                2-Ethylhexylamine
                7

                EHM

                Ethyl hexyl phthalate
                34

                EHE

                Ethyl hexyl tallate
                34

                EHT

                2-Ethyl-2-(hydroxymethyl) propane-1,3-diol (C8-C10) ester
                34

                EHD

                Ethyl lactate
                34

                ELT

                Ethylidene norbornene
                30
                2
                ENB

                Ethyl methacrylate
                14

                ETM

                N-Ethylmethylallylamine
                7

                EML

                Ethyl propionate
                34

                EPR

                2-Ethyl-3-propylacrolein
                19
                2
                EPA

                2-Ethyl-6-methyl-N-(1′-methyl-2-methoxyethyl)aniline
                9

                EEM.

                o-Ethyl phenol
                21

                EPL

                Ethyl toluene
                32

                ETE

                Fatty acid methyl esters
                34
                3
                FME

                Fatty acids (C8-C10)
                34
                3
                FDS

                Fatty acids (C12+)
                34
                3
                FDT
                FAB/FAD/FAI/FDI

                Fatty acids (saturated, C13+)
                34

                FAB
                FAD

                  Fatty acids (saturated, C14+), see Fatty acids (saturated, C13+)

                FAD
                FAB

                Fatty acids (C16+)
                34
                3
                FDI

                Fatty acids, essentially linear (C6-C18) 2-ethylhexyl ester
                34
                2, 3
                FAE

                Ferric chloride solution
                1

                FCS
                FCL.

                Ferric hydroxyethylethylenediaminetriacetic acid, trisodium salt solution
                43
                2
                FHX
                STA.

                Ferric nitrate/Nitric acid solution
                3
                2
                FNN

                  Fish oil, see Oil, edible: Fish

                2

                OFS (AFN)

                Fish solubles (water based fish meal extracts)
                43

                FSO

                Fluorosilicic acid (20-30%) in water solution
                1
                3
                FSK
                FSJ/FSL/HFS

                Fluorosilicic acid (30% or less)
                1

                FSJ
                FSK/FSL/HFS.

                Formaldehyde (50% or more), Methanol mixtures
                19
                2
                MTM

                Formaldehyde solutions (37%-50%)
                19
                2
                FMS
                FMG/FMR.

                Formaldehyde solutions (45% or less)
                19
                2, 3
                FMR
                FMG/FMS

                Formamide
                10

                FAM

                Formic acid
                4
                2
                FMA
                FMB.

                Formic acid (85% or less)
                4
                2
                FMB
                FMA

                Formic acid (over 85%)
                4
                2, 3
                FMD

                Formic acid mixture (containing up to 18% Propionic acid and up to 25% Sodium formate)
                4
                2, 3
                FMC
                FMA/FMB

                Fructose solution
                43

                FTS
                FRT.

                Fumaric adduct of Rosin, water dispersion
                43

                FAR

                  Fuming sulfuric (alternately sulphuric) acid, see

                Furfural
                19

                FFA

                Furfuryl alcohol
                20
                2
                FAL

                  Gas oil, cracked, see Oil, misc.: Gas,

                Gasoline blending stock, alkylates
                33

                GAK

                Gasoline blending stock, reformates
                33

                GRF

                Gasolines:

                Automotive (containing not more than 4.23 grams lead per gal.)
                33

                GAT

                Aviation (containing not more than 4.86 grams lead per gal.)
                33

                GAV
                AVA

                Casinghead (natural)
                33

                GCS

                Polymer
                33

                GPL

                Straight run
                33

                GSR

                  Gasolines: Pyrolysis (containing Benzene), see Pyrolysis gasoline (containing Benzene)

                GPY
                PYG

                Glucitol/Glycerol blend propoxylated (containing less than 10% amines)
                40
                3
                GGA

                Glucose solution
                43

                GLS
                DTS.

                Glutaraldehyde solutions (50% or less)
                19

                GTA

                Glycerine
                20
                2
                GCR

                Glycerine (83%)/Dioxanedimethanol (17%) mixture
                20

                GDN
                GDM.

                  Glycerol, see Glycerine

                2

                GCR

                Glycerol ethoxylated
                40

                GXA

                Glycerol monooleate
                20

                GMO

                Glycerol polyalkoxylate
                40

                GPA

                Glycerol propoxylated
                40
                3
                GXP

                Glycerol, propoxylated and ethoxylated
                40
                3
                GXE

                Glycerol/Sucrose blend propoxylated and ethoxylated
                40
                3
                GSB

                Glyceryl triacetate
                34

                GCT

                Glycidyl ester of C10 trialkyl acetic acid
                34

                GLU
                GLT

                  Glycidyl ester of tertiary carboxylic acid, see Glycidyl ester of C10 trialkyl acetic acid

                GLT
                GLU

                  Glycidyl ester of tridecyl acetic acid, see Glycidyl ester of C10 trialkyl acetic acid

                GLT
                GLU

                  Glycidyl ester of Versatic acid, see Glycidyl ester of C10 trialkyl acetic acid

                GLT
                GLU

                Glycine, sodium salt solution
                7

                GSS

                  Glycol diacetate, see Ethylene glycol diacetate

                EGY

                Glycol mixture, crude
                20

                GMC

                  Glycol triacetate, see Glyceryl triacetate

                GCT

                Glycolic acid solution (70% or less)
                4
                3
                GLC

                Glyoxal solution (40% or less)
                19
                3
                GOS

                Glyoxylic acid solution (50% or less)
                4
                3
                GAC

                Glyphosate solution (not containing surfactant)
                7

                GIO
                RUP.

                  Grape Seed Oil, see Oil, edible: Grape seed

                  Groundnut oil, see Oil, edible: Groundnut

                OGN

                  Hazelnut oil, see Oil, edible: Hazelnut

                OHN (VEO)

                  Heptadecane (all isomers), see n-Alkanes (C10+) (all isomers)

                ALV (ALJ)

                  Heptane (all isomers), see Alkanes (C6-C9)

                HMX
                ALK(HPI/HPT)

                n-Heptanoic acid
                4

                HEN
                HEP.

                Heptanol (all isomers)
                20
                3
                HTX
                HTN

                Heptene (all isomers)
                30
                2, 3
                HPX
                THE

                Heptyl acetate
                34

                HPE

                  Heptylbenzenes, see Alkyl (C5-C8) benzenes

                AKD

                  Herbicide (C15-H22-NO2-Cl), see Metolachlor

                MCO

                  Hexadecanol (Cetyl alcohol), see Alcohols (C13+)

                ALY (ASY/AYL)

                1-Hexadecylnaphthalene/1,4-bis(Hexadecyl)naphthalene mixture
                32

                HNH
                HNI.

                1-n-Hexadecylnaphthalene (90%)/1,4-di-n-(Hexadecyl)naphthalene (10%)
                32

                HNI
                HNH.

                  Hexaethylene glycol, see Polyethylene glycol

                HMG
                PEG

                Hexamethylene diisocyanate
                12

                HMS
                HDI

                Hexamethylene glycol
                20

                HMG
                HXG

                Hexamethylenediamine (molten)
                7
                3
                HME
                HMD/HMC

                Hexamethylenediamine adipate (50% in water)
                43

                HAM
                HAN

                Hexamethylenediamine adipate solution
                43

                HAN
                HAM

                Hexamethylenediamine solution
                7

                HMC
                HMD/HME

                Hexamethyleneimine
                7

                HMI

                Hexamethylenetetramine solutions
                7

                HTS
                HMT

                  Hexane (all isomers), see Alkanes (C6-C9)

                2
                HXS
                ALK (IHA/HXA)

                1,6-Hexanediol, distillation overheads
                4
                2, 3
                HDO

                Hexanoic acid
                4

                HXO

                Hexanol
                20

                HXM
                HEW/HEZ/HXN.

                Hexene (all isomers)
                30
                2, 3
                HEX
                HXE/HXT/HXU/HXV/MPN/MTN

                Hexyl acetate
                34

                HAE

                  Hexylbenzenes, see Alkyl (C5-C8) benzenes

                AKD

                  Hexylene glycol, see Hexamethylene glycol

                HXG
                HMG

                  Hog grease, see Lard

                LRD

                Hydrochloric acid
                1

                HCL

                  Hydrofluorosilicic acid (25% or less), see Fluorosilicic acid (30% or less)

                FSJ(FSK/FSL/HFS)

                bis(Hydrogenated tallow alkyl)methyl amines
                7

                HTA

                Hydrogen peroxide solutions (over 8% but not more than 60% by mass)
                0
                1, 3
                HPN
                HPO/HPS

                Hydrogen peroxide solutions (over 60% but not more than 70% by mass)
                0
                1, 3
                HPS
                HPN/HPO

                Hydrogenated starch hydrolysate
                0
                1, 3
                HSH

                2-Hydroxyethyl acrylate
                14
                2
                HAI

                N-(Hydroxyethyl)ethylenediamine triacetic acid, trisodium salt solution
                43

                HET

                N,N-bis(2-Hydroxyethyl) oleamide
                10

                HOO

                2-Hydroxy-4-(methylthio)butanoic acid
                4

                HBA

                  Hydroxyl terminated polybutadiene, see Polybutadiene, hydroxyl terminated

                PHT

                alpha-Hydro-omega-hydroxytetradeca(oxytetramethylene)
                40

                HTO
                PYS/PYT

                  Illipe oil, see Oil, edible: Illipe

                ILO (VEO)

                Isoamyl alcohol
                20
                3
                IAA
                AAI/AAL/AAN/APM/ASE

                Isobutyl alcohol
                20
                2, 3
                IAL
                BAN/BAS/BAT/BAY

                Isobutyl formate
                34
                3
                BFI
                BFN/BFO

                Isobutyl methacrylate
                14
                3
                BMI
                BMH/BMN

                Isodecaldehyde
                19

                Isononylaldehyde (crude)
                19

                INC

                Isophorone
                18
                2
                IPH

                Isophoronediamine
                7

                IPI

                Isophorone diisocyanate
                12

                IPD

                Isoprene (all isomers)
                30

                IPR

                Isoprene (part refined)
                30

                IPS
                IPR/ISC.

                Isoprene concentrate (Shell)
                30

                ISC

                Isopropanolamine
                8
                3
                MPA
                IPF/PAX/PLA

                Isopropanolamine solution
                8
                3
                PAI
                MPA/PAY/PLA/PRG

                Isopropyl acetate
                34
                3
                IAC
                PAT

                Isopropyl alcohol
                20
                2, 3
                IPA
                IPB/PAL

                Isopropylamine
                7
                3
                IPP
                IPO/IPQ/PRA

                Isopropylamine (70% or less) solution
                7
                3
                IPQ
                IPO/IPP/PRA

                  Isopropylbenzene, see Alkyl (C3-C4) benzenes

                AKC(CUM/PBY/PBZ)

                Isopropylcyclohexane
                31
                3
                IPX

                Isopropyl ether
                41
                3
                IPE
                PRL/PRN

                  Jatropha oil, see Oil, misc.: Jatropha

                3

                JTO

                Jet fuels:

                JPO
                JPT/JPF/JPV

                JP-4
                33

                JPF

                JP-5
                33

                JPV

                JP-8
                33

                JPE

                Kaolin clay solution
                43

                KLC
                KLS.

                Kaolin slurry
                43

                KLS
                KLC.

                Kerosene
                33

                KRS

                Ketone residue
                18

                KTR

                Kraft black liquor
                5

                KBL
                KPL.

                Kraft pulping liquors (free alkali content 3% or more) (Black, Green, or White)
                5

                KPL
                KBL

                Lactic acid
                0
                1, 2
                LTA

                Lactonitrile solution (80% or less)
                37
                3
                LNI

                Lard
                34

                LRD
                OLD.

                Latex, ammonia (1% or less)-inhibited
                30
                3
                LTX

                Latex: Carboxylated Styrene-Butadiene copolymer; Styrene-Butadiene rubber
                43
                3
                LCC
                LCB/LSB

                Latex, liquid synthetic
                43

                LLS
                LCB/LCC/LSB.

                Lauric acid
                34

                LRA

                Lauric acid methyl ester/Myristic acid methyl ester mixture
                34

                LMM

                  Lauryl polyglucose, see Alkyl (C12-C14) polyglucoside solution (55% or less)

                AGM/LAP

                  Lauryl polyglucose (50% or less), see Alkyl (C12-C14) polyglucoside solution (55% or less)

                LAP
                AMG

                Lecithin
                34

                LEC

                Lignin liquor
                43

                LNL
                ALG/CLL/LGA/LGM/LSL/SHC/SHP/SHQ/SLP.

                Ligninsulfonic (alternately Ligninsulphonic) acid, magnesium salt solution
                43
                3
                LGM
                LGA/LNL/LSL

                  Ligninsulfonic (alternately Ligninsulphonic) acid, sodium salt solution, see Lignin liquor or Sodium lignosulfonate (alternately lignosulphonate) solution

                LGA
                LNL or SLG

                  d-Limonene, see Dipentene

                DPN

                Linear alkyl (C12-C16) propoxyamine ethoxylate
                8

                LPE

                  Linseed oil, see Oil, misc.: Linseed

                OLS

                  Liquefied Natural Gas, see Methane

                LNG
                MTH

                Liquid chemical wastes
                0
                1, 3
                LCW

                Liquid Streptomyces solubles
                43

                Long-chain alkaryl polyether (C11-C20)
                41

                LCP

                Long-chain alkaryl sulfonic (alternately sulphonic) acid (C16-C60)
                0
                1
                LCS

                Long-chain alkyl amine
                7

                LAA

                Long-chain alkylphenate/Phenol sulfide (alternately sulphide) mixture
                21

                LPS

                Long-chain alkyl (C13+) salicylic acid
                4

                LAS

                Long-chain polyetheramine in alkyl (C2-C4)benzenes
                7

                LCE

                L-Lysine solution (60% or less)
                43
                3
                LYS

                Magnesium chloride solution
                0
                1, 2
                MGL

                Magnesium hydroxide slurry
                5

                MHS

                Magnesium long-chain alkaryl sulfonate (alternately sulphonate) (C11-C50)
                34

                MAS
                MSE

                Magnesium long-chain alkyl phenate sulfide (alternately sulphide) (C8-C20)
                34

                MPS

                Magnesium long-chain alkyl salicylate (C11+)
                34

                MLS

                Magnesium nitrate solution (66.7%)
                43

                MGP
                MGN/MGO.

                  Magnesium nonyl phenol sulfide (alternately sulphide), see Magnesium long-chain alkyl phenate sulfide (alternately sulphide) (C8-C20)

                MPS

                  Magnesium sulfonate (alternately sulphonate), see Magnesium long-chain alkaryl sulfonate (alternately sulphonate) (C11-C50)

                MSE
                MAS

                Maleic anhydride
                11

                MLA

                Maleic anhydride/sodium allylsulphonate copolymer solution
                11

                PHN (CFO/CRL/CRO/CRS/CSO)

                Maltitol solution
                0
                1, 3
                MTI

                  Mango kernel oil, see Oil, edible: Mango kernel

                MKO (VEO)

                Mercaptobenzothiazol, sodium salt solution
                5

                SMB
                MBT

                2-Mercaptobenzothiazol (in liquid mixture)
                5

                BTM
                SMD

                Mesityl oxide
                18
                2
                MSO

                Metam sodium solution
                7

                MSS
                SMD.

                Methacrylic acid
                4

                MAD

                Methacrylic acid—Alkoxypoly(alkylene oxide) methacrylate copolymer, sodium salt aqueous solution (45% or less)
                20
                3
                MAQ

                Methacrylic resin in ethylene dichloride
                14

                MRD

                Methacrylonitrile
                15
                2
                MET

                Methane
                31

                MTH
                LNG.

                3-Methoxy-1-butanol
                20

                MTX

                3-Methoxybutyl acetate
                34

                MOA

                N-(2-Methoxy-1-methyl ethyl)-2-ethyl-6-methyl chloroacetanilide, see Metolachlor
                34

                MCO.

                1-Methoxy-2-propyl acetate
                34

                MXP

                  Methoxy triglycol, see Poly(2-8)alkylene glycol monoalkyl (C1-C6) ether

                MTG
                PAG (TGY)

                Methyl acetate
                34

                MTT

                Methyl acetoacetate
                34

                MAE

                Methyl acetylene/Propadiene mixture
                30

                MAP

                Methyl acrylate
                14

                MAM

                Methyl alcohol
                20
                2
                MAL

                Methylamine solutions (42% or less)
                7
                3
                MSZ

                Methyl amyl acetate
                34

                MAC

                Methyl amyl alcohol
                20

                MAA
                MIC

                Methyl amyl ketone
                18

                MAK

                N-Methylaniline
                9
                3
                MAN

                alpha-Methylbenzyl alcohol with Acetophenone (15% or less)
                20
                3
                MBA

                Methyl bromide
                36

                MTB

                  Methyl butanol, see the Amyl alcohols

                AAI/AAL/AAN/APM/ASE/IAA

                  Methyl butenes, see Pentene (all isomers)

                PTX (AMW/AMZ/PTE)

                Methyl butenol
                20

                MBL

                Methyl tert-butyl ether
                41
                2
                MBE

                Methyl butyl ketone
                18
                2
                MBB
                MBK/MIK.

                Methyl 3-(3,5 di-tert-butyl-4-hydroxyphenyl) propionate crude melt
                20

                MYP

                Methylbutynol
                20

                MBY
                MHB.

                3-Methyl butyraldehyde
                19

                MBR

                Methyl butyrate
                34

                MBU

                Methyl chloride
                36

                MTC

                Methylcyclohexane
                31

                MCY

                Methylcyclohexanemethanol (crude)
                20

                MYH

                Methylcyclopentadiene dimer
                30

                MCK

                Methylcyclopentadienyl manganese tricarbonyl
                0
                1, 3
                MCT
                MCW

                Methylcyclopentadienyl manganese tricarbonyl (60-70%) in mineral oil
                0
                1
                MCW
                MCT.

                Methyl diethanolamine
                8

                MDE
                MAB

                Methyl ethyl ketone
                18
                2
                MEK

                2-Methyl-6-ethyl aniline
                9

                MEN

                Methyl formate
                34

                MFM

                N-Methylglucamine solution (70% or less)
                43
                3
                MGC

                2-Methylglutaronitrile
                37

                MLN
                MGN

                2-Methylglutaronitrile with 2-Ethylsuccinonitrile (12% or less)
                37
                3
                MGE
                MLN

                Methyl heptyl ketone
                18

                MHK

                2-Methyl-2-hydroxy-3-butyne
                20

                MHB
                MBY

                  Methyl isoamyl ketone, see Methyl amyl ketone

                MAJ
                MAK

                  Methyl isobutyl carbinol, see Methyl amyl alcohol

                MIC
                MAA

                Methyl isobutyl ketone
                18

                MIK
                MBB/MBK

                Methyl methacrylate
                14

                MMM

                Methylene bridged isobutylenated phenols
                21

                MBP

                  Methylene chloride, see Dichloromethane

                DCM

                3-Methyl-3-methoxybutanol
                20

                MXB

                2-Methyl-5-ethyl pyridine
                9

                MEP

                3-Methyl-3-methoxybutyl acetate
                34

                MMB

                Methyl naphthalene (molten)
                32
                3
                MNA

                Methylolurea
                19

                MUS

                  2-Methyl pentane, see Hexane (all isomers)

                HXS (ALK/HXA/IHA/NHX)

                2-Methyl-1,5-pentanediamine
                7

                MPM

                  2-Methyl-1-pentene, see Hexene (all isomers)

                MPN
                HEX (HXE/HXT/HXU/HXV/MTN)

                  4-Methyl-1-pentene, see Hexene (all isomers)

                MTN
                HEX (HXE/HXT/HXU/HXV/MPN)

                  Methyl tert-pentyl ether, see tert-Amyl methyl ether

                AYE

                2-Methyl-1,3-propanediol
                20

                MDL

                Methyl propyl ketone
                18

                MKE

                2-Methyl-5-ethylpyridine
                9

                MEP

                  Methylpyridine, see the Methylpyridines

                MPQ
                MPE/MPF/MPR

                2-Methylpyridine
                9
                3
                MPR
                MPE/MPF/MPQ

                3-Methylpyridine
                9
                3
                MPE
                MPF/MPQ/MPR

                4-Methylpyridine
                9
                3
                MPF
                MPE/MPQ/MPR

                N-Methyl-2-pyrrolidone
                9
                2
                MPY

                Methyl salicylate
                34

                MES

                alpha-Methylstyrene
                30

                MSR

                3-(Methylthio)propionaldehyde
                19

                MTP

                Metolachlor
                34

                MCO

                Microsilica slurry
                43

                MOS

                Milk
                43

                MLK

                Mineral spirits
                33

                MNS

                Mixed C4 Cargoes
                30

                MIX

                Molasses
                20

                MOL
                MON.

                Molasses residue (from fermentation)
                0
                1
                MON
                MOL.

                Molybdenum polysulfide (alternately polysulphide) long-chain alkyl dithiocarbamide complex
                0
                1, 3
                MOP

                Monochlorodifluoromethane
                36

                MCF

                  Monoethylamine, see Ethylamine

                EAM (EAN/EAO)

                  Monoisopropanolamine, see Isopropanolamine

                MPA (PLA/PLX)

                  Monoethylamine, see Ethylamine

                EAM (EAN/EAO)

                Morpholine
                7
                2
                MPL

                Motor fuel anti-knock compound (containing lead alkyls)
                0
                1
                MFA

                  MTBE, see Methyl tert-butyl ether

                MBE

                Myrcene
                30

                MRE

                Naphtha:

                Aromatic
                33

                NAR

                Coal tar solvent
                33

                NCT

                Heavy
                33

                NAG

                Paraffinic
                33

                NPF

                Petroleum
                33

                PTN

                Solvent
                33

                NSV

                Stoddard solvent
                33

                NSS

                Varnish Makers' and Painters'
                33

                NVM

                Naphthalene (molten)
                32
                3
                NTM

                Naphthalene still residue
                32
                2
                NSR

                Naphthalene sulfonic (alternately sulphonic) acid, sodium salt solution
                34

                NSB
                NSA

                Naphthalene sulfonic (alternately sulphonic) acid-Formaldehyde copolymer, sodium salt solution
                0
                1
                NFS

                Naphthenic acid
                4

                NTI

                Naphthenic acid, sodium salt solution
                43

                NTS

                Neodecanoic acid
                4

                NEA
                DCO/NAT.

                Nitrating acid (mixture of Sulfuric (alternately Sulphuric) and Nitric acids)
                0
                1
                NIA

                Nitric acid (70% and over)
                3
                2, 3
                NCE
                NAC/NCD

                Nitric acid (less than 70%)
                3
                2
                NCD
                NAC/NCE.

                  Nitric Acid, fuming, see Nitric acid (70% and over)

                1, 2, 3

                NCE

                  Nitric Acid, red fuming, see Nitric acid (70% and over)

                1, 2, 3

                NCE

                Nitrilotriacetic acid, trisodium salt solution
                34
                3
                NCA

                Nitrobenzene
                42

                NTB

                  o-Nitrochlorobenzene, see o-Chloronitrobenzene

                CNO (CNP)

                Nitroethane
                42

                NTE

                Nitroethane (80%)/Nitropropane (20%)
                42
                2, 3
                NNL
                NNM/NNO/NPM/NPN/NPP/NTE

                Nitroethane/1-Nitropropane (each 15% or more) mixture
                42
                2
                NNO
                NNL/NNM/NPM/NPN/NPP/NTE.

                Nitrogen
                0
                1
                NXX

                Nitrophenol (mixed isomers)
                42

                NPX
                NIP/NPH

                o-Nitrophenol (molten)
                0
                1, 2
                NTP
                NIP/NPH/NPX

                Nitropropane (60%)/Nitroethane (40%) mixture
                42

                NNM
                NNL/NNO/NPM/NPN/NPP/NTE

                1-or 2-Nitropropane
                42

                NPM
                NPN/NPP

                o- or p-Nitrotoluenes
                42
                3
                NIT
                NIE/NTR/NTT

                  Nonane (all isomers), see Alkanes (C6-C9)

                NAX
                ALK (NAN)

                Nonanoic acid (all isomers)
                4

                NNA
                NAI/NIN.

                Nonanoic/Tridecanoic acid mixture
                4

                NAT
                NAI/NIN/NNA.

                  Non-edible industrial grade palm oil, see Oil, misc.: Palm, non-edible industrial grade

                OPB

                Nonene (all isomers)
                30
                2
                NOO
                NNE/NON/OAM/OFX/OFY

                Nonyl acetate
                34

                NAE

                Nonyl alcohol (all isomers)
                20
                2
                NNS
                ALR/DBC/NNI/NNN

                  Nonylbenzene, see Alkyl (C9+) benzenes

                AKB

                Non-noxious Liquid Substance, (12) n.o.s. Cat OS
                0
                1
                NOL

                Nonyl methacrylate monomer
                14

                NMA

                Nonyl phenol
                21

                NNP

                  Nonyl phenol poly(4+)ethoxylate, see Alkyl (C7-C11) phenol poly(4-12) ethoxylate

                NPE
                APN

                  Nonyl phenol sulfide (alternately sulphide) (90% or less) solution, see Alkyl (C8-C40) phenol sulfide (alternately sulphide)

                AKS (NPS)

                Nonylphenol (48-62%)/Phenol (42-48%)/Dinonylphenol (1-10%) mixture
                21

                NYL

                Noxious Liquid Substance, NF, (1) n.o.s. (“trade name” contains “principal components”) Cat X
                0
                1

                Noxious Liquid Substance, F, (2) n.o.s. (“trade name” contains “principal components”) Cat X
                0
                1

                Noxious Liquid Substance, NF, (3) n.o.s. (“trade name” contains “principal components”) Cat X
                0
                1

                Noxious Liquid Substance, F, (4) n.o.s. (“trade name” contains “principal components”) Cat X
                0
                1

                Noxious Liquid Substance, NF, (5) n.o.s. (“trade name” contains “principal components”) Cat Y
                0
                1

                Noxious Liquid Substance, F, (6) n.o.s. (“trade name” contains “principal components”) Cat Y
                0
                1

                Noxious Liquid Substance, NF, (7) n.o.s. (“trade name” contains “principal components”) Cat Y
                0
                1

                Noxious Liquid Substance, F, (8) n.o.s. (“trade name” contains “principal components”) Cat Y
                0
                1

                Noxious Liquid Substance, NF, (9) n.o.s. (“trade name” contains “principal components”) Cat Z
                0
                1

                Noxious Liquid Substance, F, (10) n.o.s. (“trade name” contains “principal components”) Cat Z
                0
                1

                Noxious Liquid Substance, (11) n.o.s. (“trade name” contains “principal components”) Cat Z
                0
                1

                Non-noxious Liquid Substance, (12) n.o.s. (“trade name” contains “principal components”) Cat OS
                0
                1
                NOL

                  Nutmeg butter oil, see Oil, edible: Nutmeg butter

                ONB (VEO)

                  1-Octadecene, see the olefin or alpha-olefin entries

                OAM/OFZ

                  1-Octadecanol, see Stearyl alcohol

                SYL (ALY/ASY)

                Octadecenoamide solution
                10

                ODD

                  Octadecenol (oleyl alcohol), see Alcohols (C13+)

                ALY (AYL/ASY/OYL)

                Octamethylcyclotetrasiloxane
                34
                3
                OSA

                  Octane (all isomers), see Alkanes (C6-C9)

                OAX
                ALK (IOO/OAN)

                Octanoic acid (all isomers)
                4

                OAY
                OAA/EHO

                Octanol (all isomers)
                20
                2
                OCX
                EHX/OPA/OTA.

                Octene (all isomers)
                30
                2
                OTX
                OAM/OFC/OFY/OFW/OTE.

                n-Octyl acetate
                34

                OAF
                OAE.

                  Octyl alcohol, see Octanol (all isomers)

                2

                OCX (EHX/IOA/OTA)

                Octyl aldehydes
                19

                OAL
                EHA/IOC//OLX.

                  Octylbenzenes, see Alkyl (C5-C8) benzenes

                AKD

                Octyl decyl adipate
                34

                ODA

                n-Octyl mercaptan
                0

                OME

                  Octyl nitrates (all isomers), see Alkyl (C7-C9) nitrates

                2
                ONE
                AKN

                Octyl phenol
                21

                OPH

                  Octyl phthalate, see Dioctyl phthalate

                DAH (DIE/DIO/DLK/DOP)

                Oil, edible:

                Beechnut
                34

                OBN
                VEO

                Castor
                34

                OCA
                VEO

                Cocoa butter
                34

                OCB
                VEO

                Coconut
                34

                OCC
                VEO

                Cod liver
                34

                OCL
                AFN

                Corn
                34

                OCO
                VEO

                Cotton seed
                34

                OCS
                VEO

                Fish
                34
                2
                OFS
                AFN

                Grape seed
                34

                Groundnut
                34

                OGN
                VEO

                Hazelnut
                34

                OHN
                VEO

                Illipe
                34

                ILO
                VEO

                Lard
                34

                OLD
                AFN

                  Maize, see Oil, edible: Corn

                OCO (VEO)

                Mango kernel
                34
                3
                MKO

                Nutmeg butter
                34

                ONB
                VEO

                Olive
                34

                OOL
                VEO

                Palm
                34
                2, 3
                OPM
                VEO

                Palm kernel
                34

                OPO
                VEO

                Palm kernel olein
                34

                PKO
                VEO

                Palm kernel stearin
                34

                PKS
                VEO

                Palm mid fraction
                34

                PFM
                VEO

                Palm olein
                34

                PON
                VEO

                Palm stearin
                34

                PMS
                VEO

                Peanut
                34

                OPN
                VEO

                Poppy
                34

                OPY
                VEO

                Poppy seed
                34

                OPS
                VEO

                Raisin seed
                34

                ORA
                VEO

                Rapeseed
                34

                ORP
                VEO

                Rapeseed (low erucic acid containing less than 4% free fatty acids)
                34
                3
                ORO
                ORP/VEO

                Rice bran
                34

                ORB
                VEO

                Safflower
                34

                OSF
                VEO

                Salad
                34

                OSL
                VEO

                Sesame
                34

                OSS
                VEO

                Shea butter
                34

                OSH
                VEO

                Soyabean
                34
                2
                OSB
                VEO

                  Sunflower, see Oil, edible: Sunflower seed

                OSN (VEO)

                Sunflower seed
                34

                OSN
                VEO

                Tucum
                34

                OTC
                VEO

                Vegetable
                34

                OVG
                VEO

                Walnut
                34

                OWN
                VEO

                Oil, fuel:

                No. 1
                33

                OON

                No. 1-D
                33

                OOD

                No. 2
                33

                OTW

                No. 2-D
                33

                OTD

                No. 4
                33

                OFR

                No. 5
                33

                OFV

                No. 6
                33

                OSX

                Oil, misc.:

                Acid mixture from soyabean, corn (maize) and sunflower oil refining
                34

                AOM

                Aliphatic
                33

                OML

                Animal
                34

                OMA
                AFN

                Aromatic
                33

                OMR

                Camelina
                34

                OCI

                Cashew nut shell (untreated)
                34

                OCN

                Clarified
                33

                OCF

                Coal
                33

                OMC

                Coconut fatty acid
                34
                2
                CFA

                Coconut, fatty acid methyl ester
                34

                OCM

                Cotton seed oil, fatty acid
                34

                CFY

                Crude
                33

                OFA

                Diesel
                33

                ODS

                Disulfide (alternately Disulphide)
                0
                1
                ODI

                Gas, cracked
                33

                GOC

                Gas, high pour
                33

                OGP

                Gas, low pour
                33

                OGL

                Gas, low sulfur (alternately sulphur)
                33

                OGS

                Heartcut distillate
                33

                OHD

                Jatropha
                34
                3
                JTO

                Lanolin
                34

                OLL
                AFN

                Linseed
                33

                OLS

                Lubricating
                33
                2
                OLB

                Mineral
                33

                OMN

                Mineral seal
                33

                OMS

                Motor
                33

                OMT

                Neatsfoot
                33

                ONF
                AFN

                Oiticica
                34

                OOI

                Palm acid
                34

                PLM

                Palm fatty acid distillate
                34

                PFD

                Palm oil, fatty acid methyl ester
                34

                OPE

                Palm kernel acid
                34

                OPK

                Palm kernel fatty acid distillate
                34

                PNG

                Palm, non-edible industrial grade
                34

                OPB

                Penetrating
                33

                OPT

                Perilla
                34

                OPR

                Pilchard
                34

                OPL
                AFN

                Pine
                33

                OPI
                PNL

                Rapeseed fatty acid methyl esters
                34
                3
                ORP

                Residual
                33

                ORL

                Resin, distilled
                30
                3
                ORR

                Road
                33

                ORD

                Rosin
                33

                ORN

                Seal
                34

                OSE

                Soapstock
                34

                OIS

                Soyabean (epoxidized)
                34

                OSC/EVO

                Soyabean fatty acid methyl ester
                34

                OST

                Spindle
                33

                OSD

                Tall
                34

                OTL
                OTI/OTJ

                Tall, crude
                34
                2
                OTI
                OTJ/OTL

                Tall, distilled
                34
                2
                OTJ
                OTI/OTL

                Tall, fatty acid
                34
                2
                OTT

                Tall fatty acid (resin acids less than 20%)
                34
                2
                OTK
                OTT

                Tall pitch
                34

                OTP

                Transformer
                33

                OTF

                Tung
                34

                OTG

                Turbine
                33

                OTB

                Vacuum gas oil
                33

                OVC

                  Oleamide solution, see Octadecenoamide solution

                ODD

                Olefin-Alkyl ester copolymer (molecular weight 2000+)
                30

                OCP

                Olefin mixture (C7-C9) C8 rich, stabilized
                30
                3
                OFC
                OFW/OFY/OFX

                Olefin mixtures (C5-C7)
                30
                3
                OFY
                OAM/OFC/OFW/OFX/OFZ

                Olefin mixtures (C5-C15)
                30
                3
                OFY
                OAM/OFC/OFW/OFX/OFZ

                Olefins (C13+, all isomers)
                30

                OFZ
                OAM/OFW

                alpha-Olefins (C6-C18) mixtures
                30

                OAM
                OFC/OFW/OFX/OFY/OFZ.

                Oleic acid
                4

                OLA

                Oleum
                0
                1, 2
                OLM
                SAC/SFX.

                  Oleyl alcohol, see Alcohols (C13+)

                OYL
                ALY (ASY)

                Oleylamine
                7

                OLY

                  Olive oil, see Oil, edible: Olive

                OOL (VEO)

                Orange juice (concentrated)
                0
                1, 3
                OJC
                OJN

                Orange juice (not concentrated)
                0
                1, 3
                OJN
                OJC

                Organomolybdenum amide
                10

                OGA

                  ORIMULSION, see Asphalt emulsion

                ASQ

                Oxyalkylated alkyl phenol formaldehyde
                33

                OPF

                Oxygenated aliphatic hydrocarbon mixture
                0
                1, 3
                OAH

                  Palm acid oil, see Oil, misc.: Palm acid

                3

                PLM

                  Palm fatty acid distillate, see Oil, misc.: Palm fatty acid distillate

                3

                PFD

                  Palm kernel acid oil, see Oil, misc.: Palm kernel acid

                PNO

                  Palm kernel acid oil, methyl ester, see Oil, misc.: Palm kernel acid, methyl ester

                PNF

                  Palm kernel oil, see Oil, edible: Palm kernel

                OPO (VEO)

                  Palm kernel oil fatty acid distillate, see Oil, misc.: Palm kernel fatty acid distillate

                PNG

                  Palm kernel olein, see Oil, edible: Palm kernel olein

                3

                PKO (VEO)

                  Palm kernel stearin, see Oil, edible: Palm kernel stearin

                3

                PKS (VEO)

                  Palm mid fraction, see Oil, edible: Palm mid fraction

                3

                PFM (VEO)

                  Palm oil, see Oil, edible: Palm

                2, 3
                OPM
                VEO/OPE

                  Palm oil fatty acid methyl ester, see Oil, misc.: Palm fatty acid methyl ester

                3

                OPE

                  Palm olein, see Oil, edible: Palm olein

                3

                PON (VEO)

                  Palm stearin, see Oil, edible: Palm stearin

                PMS (VEO)

                Parachlorobenzotrifluoride
                32

                PBF

                  Paraffin wax, see Waxes: Paraffin

                3

                WPF

                  n-Paraffins (C10-C20), see n-Alkanes (C10+) all isomers

                PFN
                ALJ

                Paraldehyde
                19

                PDH

                Paraldehyde-Ammonia reaction product
                9

                PRB

                  Peanut, see Oil, edible: Peanut

                OPN (VEO)

                Pentachloroethane
                36

                PCE

                Pentacosa (oxypropane-2,3-diyl)s
                20

                POY

                  Pentadecanol, see Alcohols (C13+)
                .

                PDC
                ALY

                1,3-Pentadiene
                30

                PDE
                PDN.

                1,3-Pentadiene (greater than 50%), Cyclopentene and isomers, mixtures
                30
                3
                PMM

                  Pentaethylene glycol, see Polyethylene glycols

                PEG

                  Pentaethylene glycol methyl ether, see Poly(2-8)alkylene glycol monoalkyl (C1-C6) ether

                PAG

                Pentaethylenehexamine
                7

                PEN

                Pentaethylenehexamine/Tetraethylenepentamine mixture
                7

                PEP

                Pentane (all isomers)
                31

                PTY
                IPT/PTA.

                Pentanoic acid
                4

                POC.

                n-Pentanoic acid (64%)/2-Methyl butyric acid (36%) mixture
                4

                POJ
                POC

                  Pentasodium salt of Diethylenetriaminepentaacetic acid solution, see Diethylenetriaminepentaacetic acid, pentasodium salt solution

                DYS

                Pentene (all isomers)
                30

                PTX
                PTE.

                Pentyl aldehyde
                19

                PYL

                n-Pentyl propionate
                34

                PPE

                Perchloroethylene
                36
                2
                PER
                TTE.

                Petrolatum
                33

                PTL

                Phenol
                21
                2
                PHN
                PNS.

                Phenol solutions (2% or less)
                43

                PNS
                PHN.

                1-Phenyl-1-xylyl ethane
                32

                PXE

                Phosphate esters
                34

                PZE

                Phosphate esters, alkyl (C12-C14) amine
                7

                PEA

                Phosphoric acid
                1
                2
                PAC

                Phosphorus, yellow or white
                0
                1
                PPW
                PPB/PPR.

                Phosphosulfurized (alternately Phosphosulphurized) bicycle terpene
                0
                1
                PBT

                Phthalate based polyester polyol
                0
                1, 2
                PBE

                Phthalic anhydride (molten)
                11

                PAN

                  PIB, see Poly(4+)isobutylene (molecular weight > 224).

                alpha-Pinene
                30

                PIO
                PIB/PIN.

                beta-Pinene
                30

                PIP
                PIN/PIO.

                  Pine oil, see Oil, misc.: Pine

                PNL
                OPI

                Piperazine (70% or less)
                7
                3
                PIZ
                PPB/PPZ

                Piperazine (crude)
                7

                PZC
                PPZ/PIZ

                Piperazine, 68% solution
                7

                Polyacrylic acid solution (40% or less)
                43

                PYA

                Polyalkenyl succinic anhydride amine
                7

                PSN

                Polyalkyl acrylate
                14

                PAY

                Polyalkyl (C18-C22) acrylate in Xylene
                14

                PIX

                Polyalkylalkenaminesuccinimide, molybdenum oxysulfide (alternately oxysulphide)
                0
                3
                PSO

                Polyalkylene glycols/Polyalkylene glycol monoalkyl ethers mixtures
                40

                PPX

                  Polyalkylene glycol butyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether

                PGB
                PAG

                Poly(2-8)alkylene glycol monoalkyl (C1-C6) ether
                40
                2
                PAG

                  Including:

                  Diethylene glycol butyl ether

                40

                  Diethylene glycol ethyl ether

                40

                  Diethylene glycol n-hexyl ether

                40

                  Diethylene glycol methyl ether

                40

                  Diethylene glycol propyl ether

                40

                  Dipropylene glycol butyl ether

                40

                  Dipropylene glycol methyl ether

                40

                  Polyalkylene glycol butyl ether

                40

                  Polyethylene glycol monoalkyl ether

                40

                  Polypropylene glycol methyl ether

                40

                  Tetraethylene glycol methyl ether

                40

                  Triethylene glycol butyl ether

                40

                  Triethylene glycol ethyl ether

                40

                  Triethylene glycol methyl ether

                40

                  Tripropylene glycol methyl ether

                40

                Poly(2-8)alkylene glycol monoalkyl (C1-C6) ether acetate
                34

                PAF

                  Including:

                  Diethylene glycol butyl ether acetate

                34

                  Diethylene glycol ethyl ether acetate

                34

                  Diethylene glycol methyl ether acetate

                34

                Polyalkylene oxide polyol
                20

                PAO

                Polyalkylene glycols/Polyalkylene glycol monoalkyl ethers mixtures
                40

                PPX

                Polyalkylene oxide polyol
                20

                PAO

                Polyalkyl (C10-C20) methacrylate
                14

                PMT
                PYY.

                Polyalkyl methacrylate in mineral oil
                14

                PYY
                PMT.

                Polyalkyl(C10-C18) methacrylate/Ethylene-propylene copolymer mixture
                14

                PEM

                Polyalpha olefins
                31

                PYO

                Polyaluminum (alternately Polyaluminium) chloride solution
                1

                PLS

                Polybutadiene, hydroxyl terminated
                20

                PHT

                Polybutene
                33

                PLB

                Polybutenyl succinimide
                10

                PBS

                  Polycarboxylic ester (C9+), see Ditridecyl adipate

                DTY

                Poly(2+)cyclic aromatics
                32

                PCA

                  Polydimethylsiloxane, see Dimethylpolysiloxane

                DMP

                Polyether, borated
                41

                PED

                Polyether (molecular weight 1350+)
                41

                PYR

                Polyether polyols
                41

                PEO

                Polyethylene glycol
                40

                PEG

                Polyethylene glycol dimethyl ether
                40

                PEF

                Poly(ethylene glycol) methylbutenyl ether (molecular weight >1000)
                40

                PBN

                  Polyethylene glycol monoalkyl ether, see Poly(2-8)alkylene glycol monoalkyl (C1-C6) ether

                PEE
                PAG

                Polyethylene polyamines
                7
                2
                PEB
                PEY.

                Polyethylene polyamines (more than 50% C5-C20 Paraffin oil)
                7
                2, 3
                PEY
                PEB

                Polyferric sulfate (alternately sulphate) solution
                34

                PSS

                Polyglycerine/Sodium salts solution (containing less than 3% Sodium hydroxide)
                20
                2
                PGT
                PGS.

                Polyglycerol
                20

                PGL

                Poly(iminoethylene)-graft-N-poly(ethyleneoxy) solution (90% or less)
                7
                3
                PIG
                PIM

                Polyisobutenamine in aliphatic (C10-C14) solvent
                7
                2
                PIB
                PIA

                (Polyisobutene) amino products in aliphatic hydrocarbons
                7
                3

                Polyisobutenyl anhydride adduct
                11

                PBA

                Polyisobutenyl succinimide
                10

                PIS

                Poly(4+)isobutylene (molecular weight > 224)
                30
                3
                PIL

                Polyisobutylene (molecular weight ≤ 224)
                30
                3
                PIL

                Polyisobutylene succinic anhydride
                11

                PYS

                Polymerized esters
                34

                PYM

                Polymethylene polyphenyl isocyanate
                12
                2
                PPI

                Polymethylsiloxane
                34

                PMX

                Polyolefin (molecular weight 300+)
                33

                PMW
                PLF

                Polyolefin amide alkeneamine (C17+)
                33

                POH
                POD

                  Polyolefin amide alkeneamine (C28+), see Polyolefin amide alkenamine (C17+)

                POD
                POH

                Polyolefin amide alkeneamine borate (C28-C250)
                33

                PAB

                Polyolefin amide alkeneamine in mineral oil
                33

                PLK

                Polyolefin amide alkeneamine/Molybdenum oxysulfide (alternately oxysulphide) mixture
                7

                PMO

                Polyolefin amide alkeneamine polyol
                20

                PAP

                Polyolefin amine (C17+)
                7

                POG

                Polyolefinamine (C28-C250)
                33

                POM

                Polyolefinamine in alkyl(C2-C4) benzenes
                32

                POF
                POR.

                Polyolefinamine in aromatic solvent
                32
                3
                POR
                POF

                Polyolefin aminoester salts (molecular weight 2000+)
                34

                PAE

                Polyolefin anhydride
                11

                PAR

                Polyolefin ester (C28-C250)
                34

                POS

                Polyolefin in mineral oil
                30

                PLF
                PMW.

                Polyolefin phenolic amine (C28-C250)
                9

                PPH

                Polyolefin phosphorosulfide (alternately phosphorosulphide), barium derivative (C28-C250)
                34

                PPS

                Poly (oxyalkylene) alkenyl ether (molecular weight > 1000)
                41
                3
                PXY

                Polyoxybutylene alcohol
                41

                PXA

                Poly(20)oxyethylene sorbitan monooleate
                34

                PSM

                Polyoxypropylenediamine (molecular weight 2000)
                7

                PYD

                Poly(5+) propylene
                30

                PLQ
                PLP

                Polypropylene glycol
                40
                2
                PGC

                  Polypropylene glycol methyl ether, see Poly(2-8)alkylene glycol monoalkyl (C1-C6) ether

                PGM
                PAG

                Polysiloxane
                34

                PSX

                Polysiloxane/White spirit, low (15-20%) aromatic
                34

                PWS

                  Poly(tetramethylene ether) glycols (molecular weight 950-1050), see alpha-hydro-omega-Hydroxytetradeca(oxytetramethylene)

                PYU
                HTO

                Polytetramethylene ether glycol
                40

                PYT
                HTO/PYU/PYS

                  Poppy seed, see Oil, edible: Poppy seed

                OPS (VEO)

                  Poppy, see Oil, edible: Poppy

                OPY (VEO)

                Potassium chloride solution
                43

                PCU
                PCD/PSD.

                Potassium chloride solution (10% or more)
                43

                PCS
                PCD/PCU.

                Potassium chloride solution (less than 26%)
                43

                PSD
                CLM/DRL/PCS/PCU.

                Potassium formate solutions
                34

                PFR

                  Potassium hydroxide solution, see Caustic potash solution

                2

                CPS/PTH

                Potassium oleate
                34

                POE

                Potassium polysulfide (alternately polysulphide)/Potassium thiosulfide (alternately thiosulphide) solution (41% or less)
                0
                1
                PYP
                PSF/PTF

                Potassium salt of polyolefin acid
                34

                PSP

                Potassium thiosulfate (alternately thiosulphate) (50% or less)
                43

                PTF

                Propane
                31

                PRP
                LPG.

                  iso-Propanolamine, see Isopropanolamine

                MPA (PAX/PLA)

                n-Propanolamine
                8

                PLA
                MPA/PAX.

                2-Propene-1-aminium, N,N-dimethyl-N-2-propenyl-, chloride, homopolymer solution
                0
                1, 3
                PLN

                Propionaldehyde
                19

                PAD

                beta-Propiolactone
                18
                3
                PLT

                Propionic acid
                4

                PNA

                Propionic anhydride
                11

                PAH

                Propionitrile
                37

                PCN

                  n-Propoxypropanol, see Propylene glycol monoalkyl ether

                PXP
                PGE

                n-Propyl acetate
                34

                PAT
                IAC.

                n-Propyl alcohol
                20
                2
                PAL
                IPA.

                n-Propyl chloride
                36

                PRC

                Propyl ether
                41

                IPE/PRE

                n-Propylamine
                7

                PRA
                IPO/IPP/IPQ

                  iso-Propylamine solution, see Isopropylamine (70% or less) solution

                IPQ (IPO/IPP/PRA)

                  Propylbenzenes (all isomers), see Alkyl (C3-C4) benzenes

                PBY
                AKC (CUM/PBZ)

                  iso-Propyl cyclohexane, see Isopropylcyclohexane

                IPX

                Propylene
                30

                PPL

                Propylene-Butylene copolymer
                30

                PBP

                Propylene carbonate
                34

                PLC

                Propylene dimer
                30

                PDR

                Propylene glycol
                20
                2
                PPG

                  Propylene glycol n-butyl ether, see Propylene glycol monoalkyl ether

                PGD
                PGE

                  Propylene glycol ethyl ether, see Propylene glycol monoalkyl ether

                PGY
                PGE

                  Propylene glycol methyl ether, see Propylene glycol monoalkyl ether

                2
                PME
                PGE

                Propylene glycol methyl ether acetate
                34
                2
                PGN

                Propylene glycol monoalkyl ether
                40

                PGE

                  Including:

                  n-Propoxypropanol

                40

                  Propylene glycol n-butyl ether

                40

                  Propylene glycol ethyl ether

                40

                  Propylene glycol methyl ether

                40

                  Propylene glycol propyl ether

                40

                Propylene glycol phenyl ether
                40

                PGP

                  Propylene glycol propyl ether, see Propylene glycol monoalkyl ether

                PGE

                Propylene oxide
                16

                POX

                Propylene tetramer
                30

                PTT

                Propylene trimer
                30

                PTR

                Propylene/Propane/MAPP gas mixture
                30
                2
                PPM

                  Pseudocumene, see Trimethylbenzene (all isomers)

                TMB/TMD/TME/TRE

                Pyridine
                9

                PRD

                  Pyridine bases, see Paraldehyde-Ammonia reaction product

                PRB

                Pyrolysis gasoline (containing Benzene)
                32
                3
                PYG
                GPY

                  Rapeseed oil (low erucic acid containing less than 4% free fatty acids), see Oil, edible: Rapeseed (low erucic acid containing less than 4% free fatty acids)

                3

                ORO (VEO)

                  Rapeseed oil fatty acid methyl esters, see Oil, misc.: Rapeseed fatty acid methyl esters

                3

                RSO

                  Rapeseed oil, see Oil, edible: Rapeseed

                ORO (VEO)

                Refrigerant gases
                0
                1
                RFG

                  Resin oil, distilled, see Oil, misc.: Resin, distilled

                3

                ORR (ORS)

                  Rice bran oil, see Oil, edible: Rice bran

                ORB

                Rosin soap (disproportionated) solution
                43

                RSP

                  Rosin, see Oil, misc.: Rosin

                ORN

                  Rum, see Alcoholic beverages, n.o.s.

                ABV

                  Safflower oil, see Oil, edible: Safflower

                OSF (VEO)

                Sewage sludge
                43

                SWS

                  Shea butter, see Oil, edible: Shea butter

                3

                OSH (VEO)

                Silica slurry
                43

                SLC

                Siloxanes
                34

                SLX

                Sludge, treated
                43

                SWA

                Sodium acetate solutions
                34

                SAN

                Sodium acetate, Glycol, Water mixture (containing 1% or less Sodium hydroxide) (if non-flammable or non-combustible)
                5
                2
                SAY
                SAO/SAP/SAQ/SAY

                Sodium acetate, Glycol, Water mixture (containing Sodium hydroxide)
                5

                SAQ
                SAO/SAP/SAW/SAY

                Sodium acetate, Glycol, Water mixture (not containing Sodium hydroxide)
                34
                2
                SAW
                SAO/SAP/SAQ/SAY

                Sodium alkyl (C14-C17) sulfonates (alternately sulphonates) (60-65% solution)
                34

                SSU
                AKA/AKE

                Sodium aluminate solution
                5

                SAV
                SAU.

                Sodium aluminate solution (45% or less)
                5

                SAU
                SAV.

                Sodium aluminosilicate slurry
                34

                SLR

                Sodium benzoate
                34

                SBN
                SBM

                Sodium bicarbonate solution (less than 10%)
                34
                3
                SBC

                Sodium borohydride (15% or less)/Sodium hydroxide solution
                5

                SBX
                CSS/SBH/SBI/SHD.

                Sodium bromide solution (less than 50%)
                43
                3
                SBL
                SBR

                Sodium carbonate solution
                5

                SCE

                Sodium chlorate solution (50% or less)
                0
                1, 2
                SDD
                SDC.

                Sodium cyanide solution
                5

                SCO
                SCN/SCS.

                Sodium dichromate solution (70% or less)
                0
                1, 2
                SDL
                SCR.

                  Sodium dimethyl naphthalene sulfonate solution, see Dimethyl naphthalene sulfonic (alternately sulphonic) acid, sodium salt solution

                DNS

                Sodium hydrogen sulfide (alternately sulphide) (6% or less)/Sodium carbonate (3% or less) solution
                0
                1, 2, 3
                SSS
                SCE/SHW

                Sodium hydrogen sulfite (alternately sulphite) solution (45% or less)
                43

                SHY
                SHX

                Sodium hydrosulfide (alternately hydrosulphide)/Ammonium sulfide (alternately sulphide) solution
                5
                2
                SSA
                ASF/ASS

                Sodium hydrosulfide (alternately hydrosulphide) solution (45% or less)
                5
                2
                SHR

                  Sodium hydroxide solution, see Caustic soda solution

                2

                CSS (SHD)

                Sodium hypochlorite solution (15% or less)
                5

                SHP
                SHC/SHQ.

                Sodium hypochlorite solution (20% or less)
                5

                SHQ
                SHC/SHP.

                Sodium lignosulfonate (alternately lignosulphonate) solution
                43

                SLG
                LNL

                Sodium long-chain alkyl salicylate (C13+)
                34

                SLS

                  Sodium-2-mercaptobenzothiazol solution, see Mercaptobenzothiazol, sodium salt solution

                SMB

                Sodium methoxide (25% in methanol)
                0
                1
                SMO

                Sodium methylate 21-30% in methanol
                0
                1, 2, 3
                SMT
                SMS

                  Sodium naphthalene sulfonate (alternately sulphonate) solution, see Naphthalene sulfonic (alternately sulphonic) acid (40% or less), sodium salt solution (40% or less)

                SNS
                NSA (NSB)

                  Sodium naphthenate solution, see Naphthenic acid, sodium salt solution

                NTS

                Sodium nitrite solution
                5

                SNI
                SNT.

                  Sodium N-methyl dithio carbamate solution, see Metam sodium solution

                MSS
                SMD

                Sodium petroleum sulfonate (alternately sulphonate)
                34

                SPS

                Sodium poly(4+)acrylate solution
                43
                2
                SOP
                SOO

                Sodium polyacrylate solution
                43
                2
                SOO
                SOP

                  Sodium salt of Ferric hydroxyethylethylenediaminetriacetic acid solution, see Ferric hydroxyethylethylenediaminetriacetic acid, trisodium salt solution

                STA
                FHX

                Sodium silicate solution
                43
                2
                SSN
                SSC.

                Sodium sulfate (alternately sulphate) solution
                34
                3
                SST
                SSO

                Sodium sulfide (alternately sulphide) solution (15% or less)
                43

                SDR
                SDS

                Sodium sulfide (alternately sulphide)/Hydrosulfide (alternately Hydrosulphide) solution (H2S 15 ppm or less)
                0
                1, 2
                SSH
                SDS/SHR/SSI/SSJ

                Sodium sulfide (alternately sulphide)/Hydrosulfide (alternately Hydrosulphide) solution (H2S greater than 15 ppm but less than 200 ppm)
                0
                1, 2
                SSI
                SDS/SHR/SSH/SSJ

                Sodium sulfide (alternately sulphide)/Hydrosulfide (alternately Hydrosulphide) solution (H2S greater than 200 ppm)
                0
                1, 2
                SSJ
                SDS/SHR/SSH/SSI

                Sodium sulfite (alternately sulphite) solution (25% or less)
                43

                SUP
                SSF/SUS

                  [ADD]

                Sodium tartrates/Sodium succinates solution
                43

                STM

                Sodium thiocyanate solution (56% or less)
                0
                1, 2
                STS
                SCY.

                Sorbitol solution
                20

                SBU
                SBT.

                  Soyabean fatty acid methyl ester, see Oil, misc.: Soyabean fatty acid methyl ester

                OST

                Soyabean oil (epoxidized)
                34

                OSC/EVO

                  Soyabean oil, see Oil, edible: Soyabean

                2

                OSB (VEO)

                  Stearic acid, see Fatty acids (saturated, C13+)

                SRA
                FAD (FAB/FAE/FDI/FDT)

                Stearyl alcohol
                20

                SYL
                ALY/ASY.

                  Stoddard solvent, see Naphtha: Stoddard solvent

                NSS

                Styrene monomer
                30

                STY

                Sulfohydrocarbon (alternately Sulphohydrocarbon) (C3-C88)
                33

                SFO

                Sulfohydrocarbon (alternately Sulphohydrocarbon), long-chain (C18+) alkylamine mixture
                7

                SFX

                Sulfolane (alternately Sulpholane)
                39

                SFL

                Sulfonated (alternately Sulphonated) polyacrylate solutions
                43
                2
                SPA

                Sulfur (alternately Sulphur) (molten)
                0
                1, 2
                SXX

                Sulfur (alternately Sulphur) dioxide
                0
                1
                SFD

                Sulfuric (alternately Sulphuric) acid
                2
                2
                SFA
                SAC

                Sulfuric (alternately Sulphuric) acid, spent
                2
                2
                SAC
                SFA

                Sulfurized (alternately Sulphurized) fat (C14-C20)
                33

                SFT

                Sulfurized (alternately Sulphurized) polyolefinamide
                10

                SPY

                Sulfurized (alternately Sulphurized) polyolefinamide alkene (C28-C250) amine
                33

                SPO

                  Sunflower seed oil, see Oil, edible: Sunflowerseed
                34

                OSN (VEO)

                  Sym-trichlorobenzene, see 1,2,4-Trichlorobenzene.

                  Tall oil, see Oil, misc.: Tall

                OTL (OTI/OTJ)

                  Tall oil, crude, see Oil, misc.: Tall, crude

                2, 3

                OTI (OTJ/OTL)

                  Tall oil, distilled, see Oil, misc.: Tall, distilled

                3

                OTJ (OTI/OTL)

                  Tall oil, fatty acid, see Oil, misc.: Tall fatty acid

                2

                OTT

                  Tall oil fatty acid (resin acids less than 20%), see Oil, misc.: Tall oil fatty acid (resin less than 20%)

                2

                OTK (OTT)

                Tall oil fatty acid, barium salt
                0
                1, 2
                TOB

                  Tall oil pitch, see Oil, misc.: Tall pitch

                3

                OTP (OTI/OTJ/OTL)

                Tall oil soap (crude)
                34

                TOR
                TOS

                Tall oil soap (disproportionated) solution
                43

                TOS

                Tallow
                34
                2
                TLO

                  Tallow alcohol, see Alcohols (C13+)

                2
                TFA
                ALY (ASY)

                Tallow alkyl nitrile
                37

                TAN

                Tallow fatty acid
                34
                2
                TFD

                  Tallow fatty alcohol, see Alcohols (C13+)

                2
                TFA
                ALY

                  TAME, see tert-Amyl methyl ether

                AYE

                Tertiary butylphenols
                21

                BLT
                BTP

                Tetrachloroethane
                36

                TEC

                  1,1,2,2-Tetrachloroethane, see Tetrachloroethane
                36

                TEC
                TEE

                  Tetradecanol, see Alcohols (C13+)

                TTN
                ALY

                  Tetradecene, see olefins or alpha-olefin entries

                OAM/OFY/OFW/OFZ/TDD

                  Tetradecylbenzene, see Alkyl (C9+) benzenes

                TDB
                AKB

                Tetraethyl silicate monomer/oligomer (20% in ethanol)
                0
                1, 3
                TSM

                Tetraethylene glycol
                40

                TTG

                  Tetraethylene glycol methyl ether, see Poly(2-8)alkylene glycol monoalkyl (C1-C6) ether

                PAG

                Tetraethylenepentamine
                7
                2
                TTP

                Tetrahydrofuran
                41

                THF

                Tetrahydronaphthalene
                32

                THN

                Tetramethylbenzene (all isomers)
                32

                TTC
                TTB.

                  1,2,3,5-Tetramethylbenzene, see Tetramethylbenzene (all isomers)

                TTB
                TTC

                  Tetrapropylbenzene, see Alkyl(C9+)benzenes

                AKB

                  Tetrasodium salt of ethylenediaminetetraacetic acid solution, see Ethylenediaminetetraacetic acid, tetrasodium salt solution

                EDS

                Titanium dioxide slurry
                43

                TDS

                Titanium tetrachloride
                2

                TTT

                Toluene
                32
                2
                TOL

                Toluene diisocyanate
                12
                2

                TDI

                Toluenediamine
                9

                TDA

                o-Toluidine
                9
                2
                TLI
                TOD/TOI

                  Triarylphosphate, see Triisopropylated phenyl phosphates

                TRA
                TPL

                Tributyl phosphate
                34

                TBP

                1,2,3-Trichlorobenzene (molten)
                36
                3
                TBZ
                TCB

                1,2,4-Trichlorobenzene
                36

                TCB
                TBZ.

                  1,2,3-Trichlorobenzol, see 1,2,3-Trichlorobenzene (molten)

                TBZ
                TCB

                1,1,1-Trichloroethane
                36
                2
                TCE
                TCM.

                1,1,2-Trichloroethane
                36

                TCM
                TCE.

                Trichloroethylene
                36
                2
                TCL

                1,1,2-Trichloro-1,2,2-trifluoroethane
                36

                TTF

                Tricresyl phosphate (containing 1% or more ortho-isomer)
                34
                3
                TCO
                TCP/TCQ

                Tricresyl phosphate (containing less than 1% ortho-isomer)
                34
                3
                TCP
                TCO/TCQ

                1,2,3-Trichloropropane
                36
                2
                TCN

                  Tridecane (all isomers), see n-Alkanes (C10+) (all isomers)

                TRD
                ALV (ALJ)

                Tridecanoic acid
                34

                TDO

                  Tridecanol, see Alcohols (C13+)

                TDN
                ALY (ASK/ASY/AYK/LAL)

                  Tridecene, see Olefins (C13+ all isomers)

                TRD
                OAM/OFY/OFW/OFZ/TDC

                Tridecyl acetate
                34

                TAE

                  Tridecylbenzene, see Alkyl (C9+) benzenes

                TRB
                AKB

                Triethanolamine
                8
                2
                TEA

                Triethylamine
                7

                TEN

                Triethylbenzene
                32

                TEB

                Triethylene glycol
                40

                TEG

                  Triethylene glycol butyl ether, see Poly(2-8)alkylene glycol monoalkyl (C1-C6) ether

                TBE
                PAG

                Triethylene glycol butyl ether mixture
                40

                TBD

                Triethylene glycol di-(2-ethylbutyrate)
                34

                TGD

                Triethylene glycol dibenzoate
                34

                TGB

                Triethylene glycol ether mixture
                40

                TYM

                  Triethylene glycol ethyl ether, see Poly(2-8)alkylene glycol monoalkyl (C1-C6) ether

                TGE
                PAG

                  Triethylene glycol methyl ether, see Poly(2-8)alkylene glycol monoalkyl (C1-C6) ether

                TGY
                PAG

                Triethylenetetramine
                7
                2
                TET

                Triethyl phosphate
                34

                TPS

                Triethyl phosphite
                34
                2
                TPI

                Triisobutylene
                30

                TIB

                Triisooctyl trimellitate
                34

                TIS

                Triisopropanolamine
                8

                TIP

                  Triisopropanolamine salt of 2,4-Dichlorophenoxyacetic acid solution, see 2,4-Dichlorophenoxyacetic acid, Triisopropanolamine salt solution

                DTI

                Triisopropylated phenyl phosphates
                34

                TPL

                Trimethylacetic acid
                4

                TAA

                Trimethylamine solution (30% or less)
                7

                TMT
                TMA.

                Trimethylbenzene (all isomers)
                32

                TRE
                TMB/TMD/TME.

                  Trimethyl nonanol, see Dodecyl alcohol

                DDN (ASK/ASY/LAL)

                Trimethylol propane polyethoxylated
                20

                TPR

                Trimethyl phosphite
                34
                2
                TPP

                Trimethylhexamethylene diisocyanate (2,2,4- and 2,4,4-)
                12

                THI

                Trimethylhexamethylenediamine (2,2,4- and 2,4,4-)
                7

                THA

                2,2,4-Trimethyl-1,3-pentanediol diisobutyrate
                34

                TMQ

                2,2,4-Trimethyl-1,3-pentanediol-1-isobutyrate
                34

                TMP

                2,2,4-Trimethyl-3-pentanol-1-isobutyrate
                34

                TMR

                1,3,5-Trioxane
                41
                2
                TRO

                Triphenylborane (10% or less)/Caustic soda solution
                5

                TPB

                  Tripropylene, see Propylene trimer

                PTR

                Tripropylene glycol
                40

                TGC

                  Tripropylene glycol methyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether

                TGM
                PAG

                  Trisodium nitrilotriacetate solution, see Nitrilotriacetic acid, trisodium salt solution

                TSO
                NCA (TSN)

                Trisodium phosphate solution
                5

                TSP

                  Trisodium salt of N-(Hydroxyethyl)ethylenediaminetriacetic acid solution, see N-(Hydroxyethyl)ethylenediaminetriacetic acid, trisodium salt solution

                HET

                Trixylyl phosphate
                34

                TRP

                  Trixylenyl phosphate, see Trixylyl phosphate

                TRP

                  Tung oil, see Oil, misc.: Tung

                OTG

                Turpentine
                30

                TPT

                  Turpentine substitute, see White spirit (low (15-20%) aromatic)

                WSL (WSP)

                  Undecane (all isomers), see Alkanes (C10+) (all isomers)

                UDN
                ALV (ALJ)

                Undecanoic acid
                4

                UDA

                  Undecanol, see Undecyl alcohol

                UND (ALR)

                Undecene
                30

                UDD
                UDC.

                1-Undecene
                30

                UDC
                UDD.

                Undecyl alcohol
                20

                UND
                ALR.

                  Undecylbenzene, see Alkyl (C9+) benzenes

                UDB
                AKB

                Urea solution
                43

                USL
                URE

                Urea, Ammonium mono- and di-hydrogen phosphate/Potassium chloride solution
                0
                1
                UPX

                Urea/Ammonium nitrate solution (containing less than 1% free Ammonia)
                43
                2
                UAU
                ANU/UAS/UAT/UAV

                Urea/Ammonium nitrate solution (containing 1% or more free Ammonia)
                6

                UAT
                ANU/UAS

                Urea/Ammonium phosphate solution
                43

                UAP.

                Vacuum gas oil, see oil misc.: Vacuum gas oil
                33

                OVC

                Valeraldehyde (all isomers)
                19

                VAK
                IVA/VAL

                Vanillin black liquor (free alkali content 3% or more)
                5

                VBL

                Vegetable acid oils, n.o.s.
                34

                VAD

                  Including:

                  Corn acid oil

                34

                  Cottonseed acid oil

                34

                  Dark mixed acid oil

                34

                  Groundnut acid oil

                34

                  Mixed acid oil

                34

                  Mixed general acid oil

                34

                  Mixed hard acid oil

                34

                  Mixed soft acid oil

                34

                  Rapeseed acid oil

                34

                  Safflower acid oil

                34

                  Soya acid oil

                34

                  Sunflower seed acid oil

                34

                Vegetable fatty acid distillates, n.o.s.
                34
                3
                VFD

                  Including:

                  Palm kernel fatty acid distillate

                34

                  Palm oil fatty acid distillate

                34

                  Tall fatty acid distillate

                34

                  Tall oil fatty acid distillate

                34

                Vegetable oils, n.o.s.
                34

                VAD

                  Including:

                  Beechnut oil

                34

                  Camelina oil

                34

                  Cashew nut shell

                34

                  Castor oil

                34

                  Cocoa butter

                34

                  Coconut oil

                34
                2

                  Corn oil

                34

                  Cottonseed oil

                34

                  Croton oil

                34

                  Grape seed oil

                34

                  Groundnut acid oil

                34

                  Hazelnut oil

                34

                  Illipe oil

                34

                  Jatropha oil

                34
                3

                  Linseed oil

                34

                  Mango kernel oil

                34

                  Nutmeg butter

                34

                  Oiticica oil

                34

                  Olive oil

                34

                  Palm kernel oil

                34

                  Palm kernel olein

                34

                  Palm kernel stearin

                34

                  Palm mid fraction

                34

                  Palm, non-edible industrial grade

                34

                  Palm oil

                34
                2, 3

                  Palm olein

                34

                  Palm stearin

                34

                  Peanut oil

                34

                  Peel oil (oranges and lemons)

                34

                  Perilla oil

                34

                  Pine oil

                34

                  Poppy seed oil

                34

                  Poppy oil

                34

                  Raisin seed oil

                34

                  Rapeseed oil

                34

                  Rapeseed (low erucic acid containing less than 4% free fatty acids)

                34
                3

                  Resin oil, distilled

                30
                3

                  Rice bran oil

                34

                  Rosin oil

                34

                  Safflower oil

                34

                  Salad oil

                34

                  Sesame oil

                34

                  Shea butter

                34

                  Soyabean oil

                34
                2

                  Sunflower seed oil

                34

                  Tall

                34

                  Tall, crude

                34

                  Tall, distilled

                34

                  Tall, pitch

                34

                  Tucum oil

                34

                  Tung oil

                34

                  Walnut oil

                34

                Vegetable protein solution (hydrolyzed)
                43

                VPS

                Vinyl acetate
                13
                2
                VAM

                Vinyl chloride
                35

                VCM

                Vinyl ethyl ether
                13

                VEE

                Vinylidene chloride
                35

                VCI

                Vinyl neodecanoate
                13
                2
                VND

                Vinyltoluene
                13

                VNT

                Water
                43

                WTR

                Waxes

                WAX

                  Including:

                  Candelilla

                34

                WCD

                  Carnauba

                34

                WCA

                  Paraffin

                31

                WPF

                  Petroleum

                33

                WPT

                  White spirit, see White spirit (low (15-20%) aromatic)

                WSP
                WSL

                White spirit (low (15-20%) aromatic)
                33

                WSL
                WSP.

                  Wine, see Alcoholic beverages

                ABV

                Wood lignin with Sodium acetate/oxalate
                0
                1, 3
                WOL

                Xylenes
                32
                2
                XLX
                XLM/XLO/XLP

                Xylenes/Ethylbenzene (10% or more) mixture
                32

                XEB

                Xylenols
                21

                XYL

                Zinc alkaryl dithiophosphate (C7-C16)
                34

                ZAD

                Zinc alkenyl carboxamide
                10

                ZAA
                WSL

                Zinc alkyl dithiophosphate (C3-C14)
                34

                ZAP

                  Zinc bromide/Calcium bromide solution, see Drilling brine (containing Zinc salts)

                DZB

                Notes:

              1. Because of very high reactivity, unusual conditions of carriage, or potential compatibility problems, this commodity is not assigned to a specific group in Figure 1 to 46 CFR part 150 (Compatibility Chart).
              2. See Appendix I to 46 CFR part 150 (Exceptions to the Chart).
              3. Entry was added from the March 2012 Annex to the 2007 edition of the IBC Code (MEPC 63/23/Add.1), the December 2012 IMO Marine Environmental Protection Committee Circular (MEPC.2/Circ.18), or the December 2013 IMO Marine Environmental Protection Committee Circular (MEPC.2/Circ.19).
              4. Italicized words are not part of the cargo name but may be used in addition to the cargo name.

            [78 FR 50162, Aug. 16, 2013, as amended at USCG-2013-0423, 85 FR 21674, Apr. 17, 2020; USCG-2013-0423, 85 FR 27309, May 8, 2020]

            Pt. 150, Table 2
            Table 2 to Part 150—Grouping of Cargoes

                Group
                Cargo

                0. Unassigned Cargoes
                Acetone cyanohydrin.

                Alkenoic acid, polyhydroxy ester borated.

                Alkylbenzene distillation bottoms.

                Alkyl (C8-C10)/(C12-C14) : (60% or more/40% or less)

                Alkyl (C11-C17) benzene sulfonic (alternately sulphonic) acid.

                Alkylbenzene sulfonic (alternately sulphonic) acid (less than 4%).

                Alkyl (C18-C28) toluenesulfonic (alternately toluenesulphonic) acid.

                Aluminum (alternately Aluminium) chloride/Hydrogen chloride solution.

                Ammonium hydrogen phosphate solution.

                Ammonium nitrate solution (45% or less).

                Ammonium nitrate solution (93% or less).

                Ammonium thiocyanate/Ammonium thiosulfate (alternately thiosulphate) solution.

                Argon, liquefied.

                Benzenesulfonyl (alternately Benzenesulphonyl) chloride.1

                gamma-Butyrolactone.1

                Carbon dioxide (high purity).

                Carbon dioxide (reclaimed quality).

                Carbon dioxide, liquefied.

                Chlorine.

                2-Chloro-4-ethylamino-6-isopropylamino-5-triazine solution.

                Chlorosulfonic (alternately Chlorosulphonic) acid.

                Decyloxytetrahydro-thiophene dioxide.

                2,4-Dichlorophenoxyacetic acid, Dimethylamine salt solution (70% or less).1

                Dimethyl disulfide (alternately disulphide).

                Diphenylol propane-Epichlorohydrin resins.

                Disulfide (alternately Disulphide).

                Dodecyl hydroxypropyl sulfide (alternately sulphide).1

                Dodecylbenzenesulfonic (alternately Dodecylbenzenesulphonic) acid.1

                Ethylene oxide.

                Hydrogen peroxide solutions (over 60% but not more than 70% by mass).

                Hydrogen peroxide solutions (over 8% but not more than 60% by mass).

                Hydrogenated starch hydrolysate.

                Lactic acid.1

                Liquid chemical wastes.

                Long-chain alkaryl sulfonic (alternately sulphonic) acid (C16-C60).1

                Magnesium chloride solution.1

                Maltitol solution.

                Methylcyclopentadienyl manganese tricarbonyl.

                Methylcyclopentadienyl manganese tricarbonyl (60-70%) in mineral oil.

                Molasses residue (from fermentation).

                Molybdenum polysulfide (alternately polysulphide) long-chain alkyl dithiocarbamide complex.

                Motor fuel anti-knock compound (containing lead alkyls).

                Naphthalene sulfonic (alternately sulphonic) acid-formaldehyde copolymer, sodium salt solution.

                Nitrating acid (mixture of Sulfuric (alternately Sulphuric) and Nitric acids).

                Nitric acid (70% and over).1

                Nitric acid fuming.

                Nitric acid red fuming.

                Nitrogen.

                o-Nitrophenol (molten).1

                Noxious Liquid Substance, NF, (1) n.o.s. (“trade name” contains “principal components”) Cat X.

                Noxious Liquid Substance, F, (2) n.o.s. (“trade name” contains “principal components”) Cat X.

                Noxious Liquid Substance, NF, (3) n.o.s. (“trade name” contains “principal components”) Cat X.

                Noxious Liquid Substance, F, (4) n.o.s. (“trade name” contains “principal components”) Cat X.

                Noxious Liquid Substance, NF, (5) n.o.s. (“trade name” contains “principal components”) Cat Y.

                Noxious Liquid Substance, F, (6) n.o.s. (“trade name” contains “principal components”) Cat Y.

                Noxious Liquid Substance, NF, (7) n.o.s. (“trade name” contains “principal components”) Cat Y.

                Noxious Liquid Substance, F, (8) n.o.s. (“trade name” contains “principal components”) Cat Y.

                Noxious Liquid Substance, NF, (9) n.o.s. (“trade name” contains “principal components”) Cat Z.

                Noxious Liquid Substance, F, (10) n.o.s. (“trade name” contains “principal components”) Cat Z.

                Noxious Liquid Substance, (11) n.o.s. (“trade name” contains “principal components”) Cat Z.

                Non-noxious Liquid Substance, (12) n.o.s. (“trade name” contains “principal components”) Cat OS.

                n-Octyl Mercaptan.

                Orange juice (concentrated).

                Orange juice (not concentrated).

                Oxygenated aliphatic hydrocarbon mixture.

                Phosphorus, yellow or white.

                Phosphosulfurized (alternately Phosphosulphurized) bicycle terpene.

                Phthalate-based polyester polyol.1

                Polyalkylalkenaminesuccinimide, molybdenum oxysulfide.

                Potassium polysulfide (alternately polysulphide), Potassium thiosulfide (alternately thiosulphide) solution (41% or less).

                2-Propene-1-aminium, N,N-dimethyl-N-2-propenyl-, chloride, homopolymer solution.

                Refrigerant gases.

                Sodium chlorate solution (50% or less).1

                Sodium dichromate solution (70% or less).1

                Sodium hydrogen sulfide (alternately sulphide) (6% or less)/Sodium carbonate (3% or less) solution.1

                Sodium methoxide (25% in methanol).

                Sodium methylate (21-30% in methanol).

                Sodium sulfide (alternately sulphide)/Hydrosulfide (alternately Hydrosulphide) solution (H2S 15 ppm or less).

                Sodium sulfide (alternately sulphide), Hydrosulfide (alternately Hydrosulphide) solution (H2S greater than 15 ppm but less than 200 ppm).1

                Sodium sulfide (alternately sulphide)/Hydrosulfide (alternately Hydrosulphide) solution (H2S greater than 200 ppm).

                Sodium thiocyanate solution (56% or less).1

                Sulfur (alternately Sulphur) (molten).

                Sulfur (alternately Sulphur) dioxide.

                Tall oil fatty acid, barium salt.1

                Tetraethyl silicate monomer/oligomer (20% in ethanol).

                Urea, Ammonium mono- and di-hydrogen phosphate/Potassium chloride solution.

                Wood lignin with Sodium acetate/oxalate.

                1. Non-Oxidizing Mineral Acids
                Di-(2-ethylhexyl) phosphoric acid.

                Ferric chloride solution

                Fluorosilicic acid (20-30%) in water solution

                Fluorosilicic acid (30% or less)

                Hydrochloric acid

                Hydrofluorosilicic acid (25% or less).

                Phosphoric acid

                Polyaluminum (alternately Polyaluminium) chloride solution.

                2. Sulfuric (Alternately Sulphuric) Acids
                Sulfuric (alternately Sulphuric) acid.1

                Sulfuric (alternately sulphuric) acid, spent.

                Titanium tetrachloride

                3. Nitric Acids
                Ferric nitrate/Nitric acid solution.

                Nitric acid (70% or less).

                4. Organic Acids
                Acetic acid.1

                Acetic acid.1

                Acrylic acid.1

                Butyric acid.

                Chloroacetic acid (80% or less).

                2- or 3-Chloropropionic acid.

                Citric acid (70% or less).

                Decanoic acid.

                2,2-Dichloropropionic acid.

                Dimethyl octanoic acid.

                Formic acid.1

                Formic acid (85% or less).

                Formic acid (over 85%).

                Formic acid mixture (containing up to 18% Propionic acid and up to 25% Sodium formate).

                Glycolic acid (70% or less).

                Glyoxylic acid solution (50% or less).

                n-Heptanoic acid.

                1,6-Hexanediol, distillation overheads.

                Hexanoic acid

                2-Hydroxy-4-(methylthio)butanoic acid

                Jatropha oil

                Long-chain alkyl (C13+) salicylic acid.

                Methacrylic acid.

                Naphthenic acid.

                Neodecanoic acid.

                Nonanoic acid (all isomers).

                Nonanoic/Tridecanoic acid mixture.

                Octanoic acid (all isomers).

                Oleic acid.

                Pentanoic acid.

                n-Pentanoic acid (64%)/2-Methyl butyric acid (36%) mixture.

                Propionic acid.

                Trimethylacetic acid

                Undecanoic acid

                5. Caustics
                Aluminum (alternately Aluminium) hydroxide/sodium hydroxide/sodium carbonate solution (40% or less).

                Ammonium sulfide (alternately sulphide) solution (45% or less).

                Calcium hydroxide slurry.

                Calcium hypochlorite solution (15% or less).

                Calcium hypochlorite solution (more than 15%).

                Caustic potash solution.1

                Caustic soda solution.1

                Cresylic acid, sodium salt solution.

                1,4-Dihydro-9,10-dihydroxy anthracene, disodium salt solution.

                Kraft black liquor.

                Kraft pulping liquors (free alkali content 3% or more) (Black, Green, or White).

                Magnesium hydroxide slurry.

                Mercaptobenzothiazol, sodium salt solution.

                2-Mercaptobenzothiazol (in liquid mixture).

                Potassium hydroxide solution.1

                Sodium acetate, Glycol, Water mixture (containing 1% or less Sodium hydroxide) (if non-flammable or non-combustible).

                Sodium acetate, Glycol, Water mixture (containing Sodium hydroxide).

                Sodium aluminate solution

                Sodium aluminate solution (45% or less).

                Sodium borohydride (15% or less)/Sodium hydroxide solution.

                Sodium carbonate solutions.

                Sodium cyanide solution

                Sodium hydrosulfide (alternately hydrosulphide) solution (45% or less).1

                Sodium hydrosulfide (alternately hydrosulphide)/Ammonium sulfide (alternately sulphide) solution.1

                Sodium hypochlorite solution (15% or less).

                Sodium hypochlorite solution (20% or less).

                Sodium 2-mercaptobenzothiazol solution

                Sodium nitrite solution

                Triphenylborane (10% or less)/Caustic soda solution.

                Trisodium phosphate solution

                Vanillin black liquor (free alkali content 3% or more).

                6. Ammonia
                Ammonia, anhydrous

                Ammonium hydroxide (28% or less Ammonia)

                Urea/Ammonium nitrate solution (containing 1% or more Ammonia).

                7. Aliphatic Amines
                Alkyl amine (C17+).

                Alkyl (C12+) dimethylamine.

                N-Aminoethylpiperazine

                Butylamine (all isomers).

                Crude piperazine.

                Cyclohexylamine

                Dibutylamine

                Diethylamine.1

                Diethylenetriamine.1

                Diisobutylamine

                Diisopropylamine

                Dimethylamine

                Dimethylamine solution (45% or less)

                Dimethylamine solution (greater than 45% but not greater than 55%)

                Dimethylamine solution (greater than 55% but not greater than 65%)

                N,N-Dimethylcyclohexylamine

                N,N-Dimethyldodecylamine

                Di-n-propylamine.

                Dodecylamine/Tetradecylamine mixture.

                Dodecyldimethylamine/Tetradecyldimethylamine mixture.

                Ethoxylated tallow alkyl amine.

                Ethoxylated tallow alkyl amine, glycol mixture.

                Ethoxylated tallow amine (>95%).

                Ethylamine.1

                Ethylamine solution (72% or less).

                N-Ethylbutylamine.

                N-Ethylcyclohexylamine.

                Ethyleneamine EA 1302.1

                Ethylenediamine.1

                2-Ethylhexylamine.

                N-Ethylmethylallylamine.

                Glycine, sodium salt solution.

                Glyphosate solution (not containing surfactant).

                Hexamethylenediamine (molten).

                Hexamethylenediamine solution.

                Hexamethylenimine.

                Hexamethylenetetramine solutions.

                bis-(Hydrogenated tallow alkyl) methyl amines.

                Isophoronediamine.

                Isopropylamine

                Isopropylamine (70% or less) solution.

                Long-chain alkyl amine.

                Long-chain polyetheramine in alkyl (C2-C4) benzenes.

                Metam sodium solution

                Methylamine solutions (42% or less).

                2-Methyl-1,5-pentanediamine.

                Monoethylamine.

                Morpholine.1

                Oleylamine

                Pentaethylenehexamine

                Pentaethylenehexamine/Tetraethylenepentamine mixture.

                Phosphate esters, alkyl (C12-C14) amine.

                Piperazine (70% or less).

                Piperazine (crude).

                Piperazine, 68% solution.

                Polyalkenyl succinic anhydride amine.

                Polyethylene polyamines.1

                Polyethylene polyamines (more than 50% C5-C20 Paraffin oil).

                Poly(iminoethylene)-graft-N-poly (ethyleneoxy) solution (90% or less)

                (Polyisobutene) amino products in aliphatic hydrocarbons.

                Polyisobutenamine in aliphatic (C10-C14) solvent

                Polyolefin amide alkeneamine/Molybdenum oxysulfide (alternately oxysulphide) mixture.

                Polyolefin amine (C17+).

                Polyoxypropylenediamine (molecular weight 2000).

                n-Propylamine.

                iso-Propylamine solution.

                Poly olefin amine

                Sodium N-methyl dithio carbamate solution.

                Sulfohydrocarbon (alternately Sulphohydrocarbon), long-chain (C18+) alkylamine mixture.

                Tetraethylenepentamine.1

                Triethylamine

                Triethylenetetramine.1

                Trimethylamine solution (30% or less).

                Trimethylhexamethylenediamine (2,2,4- and 2,4,4-).

                8. Alkanolamines
                Alkyl (C12-C16) propoxyamine ethoxylates.

                2-(2-Aminoethoxy)ethanol

                Aminoethyldiethanolamine/Aminoethylethanolamine solution.

                Aminoethylethanolamine

                2-Amino-2-methyl-1-propanol

                Diethanolamine

                Diethylaminoethanol.

                Diisopropanolamine.

                Dimethylethanolamine.1

                Ethanolamine

                Ethoxylated alkyloxy alkyl amine

                Ethoxylated long-chain (C16+) alkyloxyalkanamine.

                Isopropanolamine

                Isopropanolamine solution.

                Linear alkyl (C12-C16) propoxyamine ethoxylates.

                Methyl diethanolamine

                Monoethanolamine.

                Monoisopropanolamine.

                n-Propanolamine.

                Triethanolamine.

                Triisopropanolamine.

                9. Aromatic Amines
                Alkyl (C8-C9) phenylamine in aromatic solvents

                Amine C-6, morpholine process residue

                Aniline

                Calcium long chain alkyl phenolic amine (C8-C40)

                4-Chloro-2-methylphenoxyacetic acid, Dimethylamine salt solution

                Dialkyl (C8-C9) diphenylamines

                2,6-Diethylaniline.

                2,6-Dimethylaniline.

                Diphenylamine (molten).

                Diphenylamine, reaction product with 2,2,4-trimethylpentene

                Diphenylamines, alkylated

                2-Ethyl-6-methyl-N-(1′-methyl-2-methoxyethyl)aniline

                N-Methylaniline

                2-Methyl-6-ethyl aniline

                2-Methyl-5-ethylpyridine.

                Methylpyridine.

                2-Methylpyridine

                3-Methylpyridine.

                4-Methylpyridine.

                N-Methyl-2-pyrrolidone.1

                Paraldehyde-Ammonia reaction product

                Polyolefin phenolic amine (C28-C250)

                Pyridine

                Pyridine bases

                Toluenediamine

                o-Toluidine.

                10. Amides
                Acetochlor

                Acrylamide solution (50% or less)

                Alkenyl (C11+) amide.

                N,N-Dimethylacetamide

                N,N-Dimethylacetamide solution

                N,N-Dimethylacetamide solution (40% or less)

                Dimethylformamide

                Formamide

                N,N-bis(2-Hydroxyethyl) oleamide.

                Octadecenoamide solution.

                Oleamide solution.

                Organomolybdenum amide.

                Polybutenyl succinimide

                Polyisobutenyl succinimide.

                Sulfurized (alternately Sulphurized) polyolefinamide.

                Zinc alkenyl carboxamide

                11. Organic Anhydrides
                Acetic anhydride.

                Alkenyl (C16-C20) succinic anhydride.

                Alkyl succinic anhydride.

                Maleic anhydride.

                Maleic anhydride/sodium allylsulphonate copolymer solution.

                Phthalic anhydride (molten).

                Polyisobutenyl anhydride adduct

                Polyisobutylene succinic anhydride

                Polyolefin anhydride

                Propionic anhydride

                12. Isocyanates
                Diphenylmethane diisocyanate

                Hexamethylene diisocyanate

                Isophorone diisocyanate

                Polymethylene polyphenyl isocyanate

                Toluene diisocyanate

                Trimethylhexamethylene diisocyanate (2,2,4- and 2,4,4-)

                13. Vinyl Acetates
                Vinyl acetate

                Vinyl ethyl ether

                Vinyl neodecanate

                Vinyltoluene.

                14. Acrylates
                Butyl acrylate (all isomers).

                Butyl methacrylate.

                Butyl/Decyl/Cetyl/Eicosyl methacrylate mixture.

                Cetyl/Eicosyl methacrylate mixture.

                Decyl acrylate

                Dodecyl methacrylate

                Dodecyl/Octadecyl methacrylate mixture.

                Dodecyl/Pentadecyl methacrylate mixture.

                Ethyl acrylate

                2-Ethylhexyl acrylate

                Ethyl methacrylate

                2-Hydroxyethyl acrylate.1

                Isobutyl methacrylate

                Methacrylic resin in ethylene dichloride.

                Methyl acrylate

                Methyl methacrylate.

                Nonyl methacrylate monomer.

                Polyalkyl acrylate.

                Polyalkyl(C18-C22) acrylate in Xylene.

                Polyalkyl (C10-C20) methacrylate.

                Polyalkyl methacrylate in mineral oil.

                Polyalkyl (C10-C18) methacrylate/Ethylene-propylene copolymer mixture.

                15. Substituted Allyls
                Acrylonitrile.1

                Allyl chloride.

                Dichloropropene (all isomers).

                1,3-Dichloropropene.

                Dichloropropene/Dichloropropane mixtures.

                Methacrylonitrile

                16. Alkylene Oxides
                Brominated Epoxy Resin in Acetone.

                1,2-Butylene oxide.

                Diglycidyl ether of Bisphenol A.

                Diglycidyl ether of Bisphenol F.

                Epoxy resin.

                Ethylene oxide/Propylene oxide mixture.

                Ethylene oxide/Propylene oxide mixture with an Ethylene oxide content not more than 30% by mass)

                Propylene oxide

                17. Epichlorohydrins
                Chlorohydrins.

                Epichlorohydrin

                18. Ketones
                Acetone.1

                Acetophenone.

                Butyl heptyl ketone.

                Camphor oil (light).

                1-(4-Chlorophenyl)-4,4-dimethyl pentan-3-one.1

                Cyclohexanone

                Cyclohexanone/Cyclohexanol mixtures.

                Diisobutyl ketone

                Ethyl amyl ketone.

                Isophorone.

                Ketone residue.

                Mesityl oxide.1

                Methyl amyl ketone.

                Methyl butyl ketone.

                Methyl ethyl ketone.1

                Methyl heptyl ketone.

                Methyl isoamyl ketone.

                Methyl isobutyl ketone.1

                Methyl propyl ketone.

                beta-Propriolactone

                19. Aldehydes
                Acetaldehyde

                Acrolein.1

                Butyraldehyde (all isomers)

                Crotonaldehyde.1

                Crude isononylaldehyde.

                Decaldehyde.

                n-Decaldehyde.

                2-Ethyl-3-propylacrolein.1

                Formaldehyde (50% or more)/Methanol mixtures.1

                Formaldehyde solutions (37%-50%).1

                Formaldehyde solutions (45% or less).1

                Furfural.

                Glutaraldehyde solutions (50% or less).

                Glyoxal solution (40% or less).

                Isodecaldehyde.

                Isononylaldehyde (crude).

                3-Methyl butyraldehyde.

                Methylolureas

                3-(Methylthio)propionaldehyde

                Octyl aldehyde

                Paraldehyde

                Pentyl aldehyde

                Propionaldehyde.

                Valeraldehyde (all isomers).

                20. Alcohols, Glycols
                Acrylonitrile-Styrene copolymer dispersion in Polyether polyol.

                Alcoholic beverages

                Alcohol (C9-C11) poly (2.5-9) ethoxylates.

                Alcohol (C6-C17) (secondary) poly (3-6) ethoxylates.

                Alcohol (C6-C17) (secondary) poly (7-12) ethoxylates.

                Alcohol (C12-C16) poly (1-6) ethoxylates.

                Alcohol (C12-C16) poly (7-19) ethoxylates.

                Alcohol (C12-C16) poly (20+) ethoxylates.

                Alcohol polyethoxylates

                Alcohol polyethoxylates, secondary.

                Alcoholic beverages, n.o.s.

                Alcohols (C12+), primary, linear.

                Alcohols (C8-C11), primary, linear and essentially linear.

                Alcohols (C12-C13), primary, linear and essentially linear.

                Alcohols (C14-C18), primary, linear and essentially linear.

                Alcohols (C13+):

                 Cetyl Alcohol (Hexadecanol).

                 Oleyl Alcohol (Octadecenol).

                 Pentadecanol.

                 Tallow alcohol.

                 Tetradecanol.

                 Tridecanol.

                Amyl alcohol, primary.

                n-Amyl alcohol.

                sec-Amyl alcohol.

                tert-Amyl alcohol.

                Behenyl alcohol

                Bio-fuel blends of Gasoline and Ethyl alcohol (>25% but <99% by volume).

                Brake fluid base mix: Poly(2-8)alkylene (C2-C3) glycols/Polyalkylene (C2-C10) glycols monoalkyl (C1-C4) ethers and their borate esters.

                2-Butoxyethanol (58%)/Hyperbranched polyesteramide (42%) (mixture).

                Butyl alcohol (all isomers).1

                n-Butyl alcohol

                Butylene glycol.

                Choline chloride solutions.

                Crude Isopropanol.

                Cyclohexanol.

                Decyl alcohol (all isomers).1

                Decyl/Dodecyl/Tetradecyl alcohol mixture.

                Diacetone alcohol.1

                2,2-Dimethylpropane-1,3-diol (molten or solution).

                tert-Dodecanethiol.1

                Dodecyl alcohol (all isomers).

                Ethoxylated alcohols, C11-C15

                Ethyl alcohol.1

                Ethyl butanol

                Ethylene chlorohydrin

                Ethylene cyanohydrin

                Ethylene glycol.1

                Furfuryl alcohol.1

                Glycerine.1

                Glycerine (83%)/Dioxanedimethanol (17%) mixture.

                Glycerol.

                Glycerol monooleate.

                Glycol mixture, crude.

                Heptanol (all isomers).

                Hexadecanol (Cetyl alcohol).

                Hexamethylene glycol.

                Hexanol

                Hexylene glycol.

                Isoamyl alcohol.

                Isobutyl alcohol.

                Isopropyl alcohol.

                Methacrylic acid—Alkyloxypoly (alkylene oxide) methacrylate copolymer, sodium salt aqueous solution (45% or less).

                3-Methoxy-1-butanol.

                Methyl alcohol.1

                Methyl amyl alcohol

                alpha-Methylbenzyl alcohol with Acetophenone (15% or less).

                Methyl butanol.

                Methyl butenol.

                Methyl 3- (3,5 di-tert-butyl-4-hydroxyphenyl) propionate crude melt.

                Methylbutynol.

                Methylcyclohexanemethanol (crude).

                2-Methyl-2-hydroxy-3-butyne.

                Methyl isobutyl carbinol

                3-Methyl-3-methoxybutanol

                2-Methyl-1,3-propanediol

                Molasses.

                Nonyl alcohol (all isomers).1

                1-Octadecanol.

                Octadecenol (oleyl alcohol).

                Octanol (all isomers).1

                Octyl alcohol.1

                Pentacosa(oxypropane-2,3-diyl)s.

                Polyalkylene oxide polyol.

                Polybutadiene, hydroxyl terminated.

                Polyglycerine/Sodium salts solution (containing less than 3% Sodium hydroxide).1

                Polyglycerol.

                Polyolefin amide alkeneamine polyol.

                n-Propyl alcohol.1

                Propylene glycol.1

                Sorbitol solution.

                Stearyl alcohol.

                Tallow alcohol.

                Tallow fatty alcohol (C13+).

                Trimethyl nonanol.

                Trimethylol propane polyethoxylated.

                Undecanol

                Undecyl alcohol

                Wine.

                21. Phenols, Cresols
                Alkyl (C4-C9) phenols.

                Alkylated (C4-C9) hindered phenols.

                Benzyl alcohol

                Carbolic oil

                Creosote.1

                Creosote (coal tar).

                Creosote (wood tar).

                Cresols (all isomers).

                Cresols with 5% or more phenol.

                Cresols with less than 5% phenol.

                Cresylic acid.

                Cresylic acid dephenolized

                Cresylic acid tar.

                Cresylic acid with 5% or more phenol.

                Dibutylphenols

                2,4-Dichlorophenols.

                Di-tert-butylphenol.

                2,4-Di-tert-butylphenol.

                2,6-Di-tert-butylphenol.

                2,4-Dichlorophenol.

                Dodecyl phenol.

                o-Ethyl phenol.

                Long-chain alkylphenate/Phenol sulfide (alternately sulphide) mixture.

                Methylene bridged isobutylenated phenols.

                Nonylphenol.

                Nonylphenol (48-62%)/Phenol (42-48%)/Dinonylphenol (1-10%) mixture.

                Octyl phenol

                Phenol

                Tertiary butylphenols.

                Xylenols

                22. Caprolactam Solutions
                epsilon-Caprolactam (molten or aqueous solutions)

                  23-29. Unassigned

                30. Olefins
                Acrylic acid/ethenesulfonic (alternately ethenesulphonic) acid copolymer with phosphonate groups, sodium salt solution.

                Aryl polyolefin (C11-C50).

                Butadiene (all isomers).

                Butadiene/Butylene mixtures (containing Acetylenes).

                Butene oligomer.

                Butylenes (all isomers).

                1,5,9-Cyclododecatriene.

                Cyclopentadiene/Styrene/Benzene mixture.

                1,3-Cyclopentadiene dimer (molten).

                Cyclopentene.

                Decene.

                Dicyclopentadiene, Resin Grade, 81-89%.

                Diisobutylene

                Dipentene

                Dodecene (all isomers).

                Ethylene.

                Ethylidene norbornene.1

                Heptene (all isomers).

                Hexene (all isomers).

                Isoprene (all isomers).

                Isoprene (part refined).

                Isoprene concentrate (Shell).

                Latex ammonia (1% or less)-inhibited.

                d-Limonene.

                Methyl acetylene/Propadiene mixture.

                Methyl butenes.

                Methylcyclopentadiene dimer.

                2-Methyl-1-pentene.

                4-Methyl-1-pentene.

                alpha-Methylstyrene.

                Mixed C4 Cargoes.

                Myrcene.

                Nonene (all isomers).

                1-Octadecene.

                Octene (all isomers).

                Olefin-Alkyl ester copolymer (molecular weight 2000+).

                Olefin mixture (C7-C9) C8 rich, stabilized.

                Olefin mixtures (C5-C7)

                Olefin mixtures (C5-C15)

                Olefins (C13+, all isomers).

                alpha-Olefins (C6-C18) mixtures.

                1,3-Pentadiene.

                1,3-Pentadiene (greater than 50%), Cyclopentene and isomers, mixtures.

                Pentene (all isomers).

                Pentene

                alpha-Pinene

                beta-Pinene.

                Piperylene concentrate.

                Poly(4+)isobutylene (molecular weight >224).

                Polyisobutylene (molecular weight ≤224).

                Polyolefin in mineral oil.

                Poly(5+)propylene.

                Propylene.

                Propylene-butylene copolymer

                Propylene dimer.

                Propylene tetramer.

                Propylene trimer.

                Propylene/Propane/MAPP gas mixture.

                Styrene monomer.

                Tetradecene

                Tridecene

                Triisobutylene

                Tripropylene

                Turpentine

                Undecene.

                1-Undecene.

                31. Paraffins
                Alkanes (C10-C26) linear and branched (flash point >60 °C).

                Alkanes (C10-C26) linear and branched (flash point ≤60 °C).

                Alkanes (C6-C9).

                n-Alkanes (C9-C11).

                n-Alkanes (C10+) (all isomers).

                iso- & cyclo-Alkanes (C10-C11).

                iso- & cyclo-Alkanes (C12+).

                Butane (all isomers).

                Butane/Propane mixture.

                Cycloheptane

                Cyclohexane

                Cyclopentane.

                Ethane.

                Ethyl cyclohexane

                Ethylene-Propylene copolymer (in liquid mixtures).

                Heptadecane (all isomers).

                Isopropylcyclohexane.

                Methane.

                Methylcyclohexane

                2-Methyl pentane.

                Nonane (all isomers).

                Octane (all isomers).

                Paraffin wax.

                Pentane (all isomers).

                Polyalpha olefins.

                Propane.

                Waxes: Paraffin.

                32. Aromatic Hydrocarbons Mixures
                Alkyl acrylate-Vinyl pyridine copolymer in Toluene.

                Alkyl (C3-C4) benzenes:

                 Butylbenzenes.

                 Cumene.

                 Propylbenzenes.

                Alkyl (C5-C8) benzenes:

                 Amylbenzenes.

                 Heptylbenzenes.

                 Hexylbenzenes.

                 Octylbenzenes.

                Alkyl (C9+) benzenes:

                 Decylbenzenes.

                 Dodecylbenzenes.

                 Nonylbezenes.

                 Tetradecylbenzenes.

                 Tetrapropylbenzenes.

                 Tridecylbenzenes.

                 Undecylbenzenes.

                Alkylbenzene mixtures (containing at least 50% of Toluene).

                Alkylbenzene, Alkylindane, Alkylindene mixture (each C12-C17).

                Alkyl toluene.

                Alkyl (C18+) toluenes.

                Benzene.

                Benzene and mixtures having 10% Benzene or more.

                Benzene hydrocarbon mixtures (containing Acetylenes) (having 10% Benzene or more).

                Benzene/Toluene/Xylene mixtures (having 10% Benzene or more).

                Butyl phenol, Formaldehyde resin in Xylene

                Butyl toluene.

                C9 Resinfeed (DSM).1

                p-Cymene.

                Detergent alkylate.

                Diethylbenzene.

                Diisopropylbenzene (all isomers)

                Diisopropylnaphthalene.

                Diphenyl.

                Dodecyl xylene.

                Ethylbenzene

                Ethyl toluene.

                1-Hexadecylnaphthalene/1,4-bis (Hexadecyl) naphthalene mixture.

                1,n-Hexadecylnaphthalene (90%)/1,4-Di-n-(Hexadecyl) naphthalene (10%).

                Hexylbenzenes.

                Methyl naphthalene (molten).

                Naphthalene (molten).

                Naphthalene still residue.

                Parachlorobenzotrifluoride.

                1-Phenyl-1-xylyl ethane.

                Poly(2+) cyclic aromatics.

                Polyolefinamine in alkyl (C2-C4) benzenes.

                Polyolefinamine in aromatic solvent.

                Pyrolysis gasoline (containing Benzene).

                Tetrahydronaphthalene.

                Tetramethylbenzene (all isomers).

                C9 Resinfeed (DSM) 2

                1,2,3,5-Tetramethylbenzene.

                Toluene.

                Tridecylbenzene

                Triethylbenzene.

                Trimethylbenzene (all isomers).

                Xylenes.

                Xylenes/Ethylbenzene (10% or more) mixture.

                33. Miscellaneous Hydrocarbon Mixtures
                 Alachlor technical (90% or more).

                Alkylbenzene sulfonic (alternately sulphonic) acid, sodium salt solution.

                Alkyl dithiothiadiazole (C6-C24).

                Alkyl (C18-C28) toluenesulfonic (alternately toluenesulphonic) acid, Calcium salts, high overbase.

                Alkyl (C18-C28) toluenesulfonic (alternately toluenesulphonic) acid, Calcium salts, low overbase.

                Asphalt.

                Asphalt blending stocks, roofers flux.

                Asphalt blending stocks, straight run residue

                Asphalt emulsion

                Asphalt, kerosene, and other components

                Aviation alkylates (C8 paraffins and isoparaffins BPT 95 to 120 °C).

                Bio-fuel blends of Diesel/gas oil and Alkanes (C10-C26), linear and branched with a flash point >60 °C (>25% but <99% by volume)

                Bio-fuel blends of Diesel/gas oil and Alkanes (C10-C26), linear and branched with a flash point ≤60 °C (>25% but <99% by volume).

                Calcium sulfonate (alternately sulphonate)/Calcium carbonate/Hydrocarbon solvent mixture.

                Coal tar.

                Coal tar crude bases.

                Coal tar distillate.

                Coal tar pitch (molten).

                Coal tar, high temperature.

                Decahydronaphthalene.

                Diphenyl/Diphenyl ether mixture.

                Distillates, flashed feed stocks.

                Distillates, straight run

                Drilling mud (low toxicity) (if flammable or combustible).

                Gas oil, cracked

                Gasoline blending stock, alkylates

                Gasoline blending stock, reformates

                Gasolines:

                 Automotive (containing not over 4.23 grams lead per gal.).

                 Aviation (containing not over 4.86 grams lead per gal.).

                 Casinghead (natural).

                 Polymer.

                 Straight run.

                Jet Fuels:

                 JP-4.

                 JP-5.

                 JP-8.

                Kerosene.

                Mineral spirits.

                Naphtha:

                 Aromatic.

                 Coal tar solvent.

                 Heavy.

                 Paraffinic.

                 Petroleum.

                 Solvent.

                 Stoddard solvent.

                 Varnish Makers' and Painters'.

                Oil, fuel:

                 No. 1.

                 No. 1-D.

                 No. 2.

                 No. 2-D.

                 No. 4.

                 No. 5.

                 No. 6.

                Oil, misc.:

                 Aliphatic.

                 Aromatic.

                 Clarified.

                 Coal.

                 Crude.

                 Diesel.

                 Gas, cracked.

                 Gas, high pour.

                 Gas, low pour.

                 Gas, low sulfur (alternately sulphur).

                 Heartcut distillate.

                 Lubricating.

                 Mineral.

                 Mineral seal.

                 Motor.

                 Neatsfoot.

                 Penetrating.

                 Pine.

                 Residual.

                 Road.

                 Rosin.

                 Spindle.

                 Transformer.

                 Turbine.

                 Vacuum gas oil.

                Oxyalkylated alkyl phenol formaldehyde.

                Petrolatum.

                Petroleum wax.

                Polybutene.

                Polyolefin (molecular weight 300+).

                Polyolefin amide alkeneamine (C17+).

                Polyolefin amide alkeneamine (C28+).

                Polyolefin amide alkeneamine borate (C28-C250)

                Polyolefin amide alkeneamine in mineral oil.

                Polyolefinamine (C28-C250).

                Sulfohydrocarbon (alternately Sulphohydrocarbon) (C3-C88).

                Sulfurized (alternately Sulphurized) fat (C14-C20).

                Sulfurized (alternately Sulphurized) polyolefinamide alkene (C28-C250) amine.

                Waxes: Petroleum.

                White spirit.

                White spirit (low (15-20%) aromatic).

                34. Esters
                Alkenyl (C8+) amine, Alkenyl (C12+) acid ester mixture.

                Alkyl dithiocarbamate (C19-C35).

                Alkyl ester copolymer (C4-C20).

                Alkyl ester copolymer in mineral oil.

                Alkyl (C7-C9) nitrates.1

                Alkyl (C8-C40) phenol sulfide (alternately sulphide).

                Alkyl (C10-C20), (saturated and unsaturated) phosphite.

                Alkyl sulfonic (alternately sulphonic) acid ester of phenol.

                Alkyl (C18-C28) toluenesulfonic (alternately toluenesulphonic) acid, Calcium salts, borated.

                Alkylaryl phosphate mixtures (more than 40% Diphenyl tolyl phosphate, less than 0.02% ortho-isomer).

                Amyl acetate (all isomers).

                Amyl acid phosphate.

                Animal and Fish oils, n.o.s.:

                 Cod liver oil.

                 Lanolin.

                 Neatsfoot oil.

                 Pilchard oil.

                 Sperm oil.

                Animal and Fish acid oils and distillates, n.o.s.:

                 Animal acid oil.

                 Fish acid oil.

                 Lard acid oil.

                 Mixed acid oil.

                 Mixed general acid oil.

                 Mixed hard acid oil.

                 Mixed soft acid oil.

                Barium long-chain (C11-C50) alkaryl sulfonate (alternately sulphonate).

                Barium long-chain alkyl (C8-C14) phenate sulfide (alternately sulphide).

                Benzenetricarboxylic acid trioctyl ester.

                Benzyl acetate

                Bio-fuel blends of Diesel/gas oil and FAME (>25% but <99% by volume)

                Bio-fuel blends of Diesel/gas oil and vegetable oil (>25% but <99% by volume)Boronated calcium sulfonate

                Bis (2-ethylhexyl) terephthalate.

                Boronated calcium sulfonate (alternately sulphonate).

                Butyl acetate (all isomers)

                Butyl benzyl phthalate

                Butyl butyrate (all isomers).

                n-Butyl formate.

                n-Butyl propionate.

                Butyl stearate

                Calcium alkyl (C10-C28) salicylate.

                Calcium alkyl (C9) phenol sulfide (alternately sulphide), polyolefin phosphorosulfide (alternately phosphorosulphide) mixture.

                Calcium carbonate slurry.

                Calcium long-chain alkaryl sulfonate (alternately sulphonate) (C11-C50).

                Calcium long-chain alkyl (C5-C10) phenate.

                Calcium long-chain alkyl (C5-C20) phenate.

                Calcium long-chain alkyl (C11-C40) phenate.

                Calcium long-chain alkyl phenate sulfide (alternately sulphide) (C8-C40).

                Calcium long chain alkyl salicylate (C13 + )

                Calcium long-chain alkyl (C18-C28) salicylate.

                Calcium nitrate solutions (50% or less).

                Calcium nitrate/Magnesium nitrate/Potassium chloride solution.

                Calcium salts of fatty acids.

                Calcium stearate.

                Cobalt naphthenate in solvent naphtha.

                Copper salt of long-chain (C17+) alkanoic acid.

                Copper salt of long-chain (C3-C16) fatty acid.

                Cyclohexyl acetate.

                Decyl acetate.

                Dialkyl (C7-C13) phthalates:

                 Di-(2-ethylhexyl) phthalate.

                 Diheptyl phthalate.

                 Dihexyl phthalate.

                 Diisooctyl phthalate.

                 Dioctyl phthalate.

                 Diisodecyl phthalate.

                 Diisononyl phthalate.

                 Dinonyl phthalate.

                 Ditridecyl phthalate.

                 Diundecyl phthalate.

                Dialkyl thiophosphates sodium salts solution.

                Dibutyl hydrogen phosphonate

                Dibutyl phthalate

                Dibutyl terephthalate.

                Di-(2-ethylhexyl) adipate.

                Di-(2-ethylhexyl) terephthalate.

                Diethylene glycol dibenzoate.

                Diethylene glycol phthalate.

                Diethyl phthalate.

                Diethyl sulfate (alternately sulphate).

                Di-n-hexyl adipate

                Diisobutyl phthalate

                Dimethyl adipate

                Dimethylcyclicsiloxane hydrolyzate

                Dimethyl glutarate

                Dimethyl hydrogen phosphite.1

                Dimethyl naphthalene sulfonic (alternately sulphonic) acid, sodium salt solution.1

                Dimethyl phthalate

                Dimethylpolysiloxane.

                Dimethyl succinate

                Dipropylene glycol dibenzoate

                Dithiocarbamate ester (C7-C35)

                Ditridecyl adipate.

                2-Dodecenylsuccinic acid, dipotassium salt solution.

                2-Ethoxyethyl acetate.

                Ethyl acetate

                Ethyl acetoacetate

                Ethyl butyrate

                2-Ethyl-2-(2,4-dichlorophenoxy) acetate

                2-Ethyl-2-(2,4-dichlorophenoxy) propionate

                S-Ethyl dipropylthiocarbamate.

                Ethylene carbonate.

                Ethylene glycol acetate

                Ethylene glycol butyl ether acetate

                Ethylene glycol diacetate.

                Ethylene glycol methyl ether acetate.

                Ethyl-3-ethoxypropionate

                Ethyl hexyl phthalate

                Ethyl hexyl tallate.

                2-Ethyl-2-(hydroxymethyl) propane-1,3-diol (C8-C10) ester.

                Ethyl lactate.

                Ethyl propionate.

                Fatty acid methyl esters.

                Fatty acids (C8-C10).

                Fatty acids (C12+).

                Fatty acids (saturated, C13+).

                Fatty acids (C16+).

                Fatty acids, essentially linear (C6-C18) 2-ethylhexyl ester.

                Glyceryl triacetate.

                Glycidyl ester of C10 trialkyl acetic acid.

                Glycidyl ester of tertiary carboxylic acid.

                Glycidyl ester of tridecyl acetic acid.

                Glycidyl ester of Versatic acid.

                Glycol diacetate.

                Glycol triacetate.

                Heptyl acetate.

                Herbicide (C15-H22-NO2-Cl).

                Hexyl acetate.

                Hog grease.

                Isobutyl formate

                Isopropyl acetate

                Lauric acid methyl ester/Myristic acid methyl ester mixture.

                Lecithin

                Magnesium long-chain alkaryl sulfonate (alternately sulphonate) (C11-C50).

                Magnesium long-chain alkyl phenate sulfide (alternately sulphide) (C8-C20).

                Magnesium long-chain alkyl salicylate (C11+).

                Magnesium nonyl phenol sulfide (alternately sulphide).

                Magnesium sulfonate (alternately sulphonate).

                3-Methoxybutyl acetate

                1-Methoxy-2-propyl acetate

                Methyl acetate

                Methyl acetoacetate

                Methyl amyl acetate

                Methyl butyrate

                Methyl formate

                3-Methyl-3-methoxybutyl acetate

                Methyl salicylate.

                N-(2-Methoxy-1-methyl ethyl)-2-ethyl-6-methyl chloroacetanilide.

                Metolachlor.

                Naphthalene sulfonic (alternately sulphonic) acid, sodium salt solution.

                Nitrilotriacetic acid, trisodium salt solution

                Nonyl acetate

                Nonyl phenol sulfide (90% or less) solution.

                Octamethylcyclotetrasiloxane

                n-Octyl acetate

                Octyl decyl adipate

                Octyl nitrate.

                Octyl phthalate.

                Oil, edible:

                 Beechnut.

                 Castor.

                 Cocoa butter.

                 Coconut.

                 Cod liver.

                 Corn.

                 Cotton seed.

                 Fish.

                 Grape seed.

                 Groundnut.

                 Hazelnut.

                 Illipe.

                 Lard.

                 Maize.

                 Mango kernel.

                 Nutmeg butter.

                 Olive.

                 Palm.

                 Palm kernel.

                 Palm kernel olein.

                 Palm kernel stearin.

                 Palm mid fraction.

                 Palm olein.

                 Palm stearin.

                 Peanut.

                 Poppy.

                 Poppy seed.

                 Raisin seed.

                 Rapeseed.

                 Rapeseed, (low erucic acid containing less than 4% free fatty acids).

                 Rice bran.

                 Safflower.

                 Salad.

                 Sesame.

                 Shea butter.

                 Soyabean.

                 Sunflower.

                 Sunflower seed.

                 Tucum.

                 Vegetable.

                 Walnut.

                Oil, misc.:

                 Acid mixture from soyabean, corn (maize) and sunflower oil refining.

                 Animal.

                 Camelina.

                 Cashew nut shell oil (untreated).

                 Coconut fatty acid.

                 Coconut, fatty acid methyl ester.

                 Cottonseed oil, fatty acid.

                 Lanolin.

                 Linseed.

                 Oiticica.

                 Palm acid.

                 Palm fatty acid distillate.

                 Palm oil, fatty acid methyl ester.

                 Palm kernel acid.

                 Palm kernel fatty acid distillate.

                 Palm, non-edible industrial grade.

                 Perilla.

                 Pilchard.

                 Rapeseed fatty acid methyl esters.

                 Seal.

                 Soapstock.

                 Soyabean (epoxidized).

                 Soyabean fatty acid methyl ester.

                 Tall.

                 Tall, crude.

                 Tall, distilled.

                 Tall, fatty acid.

                 Tall, fatty acid (resin acids less than 20%).

                 Tall pitch.

                 Tung.

                n-Pentyl propionate.

                Phosphate esters

                Poly (2-8)alkylene glycol monoalkyl (C1-C6) ether acetate:

                Diethylene glycol butyl ether acetate.

                Diethylene glycol ethyl ether acetate.

                Diethylene glycol methyl ether acetate.

                Polycarboxylic ester (C9+).

                Polyferric sulfate (alternately sulphate) solution.

                Polymerized esters.

                Polymethylsiloxane.

                Polyolefin aminoester salts (molecular weight 2000+).

                Polyolefin ester (C28-C250).

                Polyolefin phosphorosulfide (alternately phosphorosulphide), barium derivative (C28-C250).

                Poly(20)oxyethylene sorbitan monooleate.

                Polysiloxane

                Polymethylsiloxane.

                Polyolefin aminoester salts (molecular weight 2000+).

                Polyolefin ester (C28-C250).

                Polyolefin phosphorosulfide (alternately phosphorosulphide), barium derivative (C28-C250).

                Poly(20)oxyethylene sorbitan monooleate.

                Polysiloxane/White spirit, low (15-20%) aromatic.

                Potassium formate solutions.

                Potassium formate solution (75% or more)

                Potassium oleate.

                Potassium salt of polyolefin acid.

                n-Propyl acetate.

                Propylene carbonate

                Propylene glycol methyl ether acetate.

                Shea butter

                Siloxanes.

                Sodium acetate solution.

                Sodium acetate/Glycol/Water mixture (not containing Sodium hydroxide).

                Sodium alkyl (C14-C17) sulfonates (alternately sulphonates) 60-65% solution.

                Sodium aluminosilicate slurry.

                Sodium benzoate.

                Sodium bicarbonate solution (less than 10%).

                Sodium dimethyl naphthalene sulfonate (alternately sulphonate) solution.2

                Sodium long-chain alkyl salicylate (C13+).

                Sodium naphthalene sulfonate (alternately sulphonate) solution.

                Sodium petroleum sulfonate (alternately sulphonate).

                Sodium sulfate (alternately sulphate) solution.

                Tall oil soap, crude.

                Tallow.

                Tallow fatty acid.

                Tributyl phosphate

                Tricresyl phosphate (containing 1% or more ortho-isomer)

                Tricresyl phosphate (containing less than 1% ortho-isomer)

                Tridecanoic acid

                Tridecyl acetate.

                Triethylene glycol di-(2-ethylbutyrate).

                Triethylene glycol dibenzoate.

                Triethyl phosphate.

                Triethyl phosphite.1

                Triisooctyl trimellitate.1

                Triisopropylated phenyl phosphates.

                Trimethyl phosphite.1

                2,2,4-Trimethyl-1,3-pentanediol diisobutyrate.

                2,2,4-Trimethyl-3-pentanol-1-isobutyrate.

                Trisodium nitrilotriacetate solution.

                2,2,4-Trimethyl-1,3-pentanediol-1-isobutyrate

                Trixylyl phosphate

                Trixylenyl phosphate.

                Vegetable acid oils, n.o.s.:

                 Corn acid oil.

                 Cottonseed acid oil.

                 Dark mixed acid oil.

                 Groundnut acid oil.

                 Mixed acid oil.

                 Mixed general acid oil.

                 Mixed hard acid oil.

                 Mixed soft acid oil.

                 Rapeseed acid oil.

                 Safflower acid oil.

                 Soya acid oil.

                 Sunflower seed acid oil.

                Vegetable fatty acid distillates, n.o.s.:

                 Palm kernel fatty acid distillate.

                 Palm oil fatty acid distillate.

                 Tall fatty acid distillate.

                 Tall oil fatty acid distillate.

                Vegetable oils, n.o.s.:

                 Beechnut oil.

                 Camelina oil.

                 Cashew nut shell.

                 Castor oil.

                 Cocoa butter.

                 Coconut oil.

                 Corn oil.

                 Cotton seed oil.

                 Croton oil.

                 Grape seed oil.

                 Groundnut oil.

                 Hazelnut oil.

                 Illipe oil.

                 Linseed oil.

                 Mango kernel oil.

                 Nutmeg butter.

                 Oiticica oil.

                 Olive oil.

                 Palm kernel oil.

                 Palm kernel olein.

                 Palm kernel stearin.

                 Palm mid fraction.

                 Palm, non-edible industrial grade.

                 Palm oil.

                 Palm olein.

                 Palm stearin.

                 Peanut oil.

                 Peel oil (oranges and lemons).

                 Perilla oil.

                 Pine oil.

                 Poppy seed oil.

                 Poppy oil.

                 Raisin seed oil.

                 Rapeseed oil.

                 Rapeseed (low erucic acid containing less than 4% free fatty acids).

                 Rice bran oil.

                 Rosin oil.

                 Safflower oil.

                 Salad oil.

                 Sesame oil.

                 Shea butter.

                 Soyabean oil.

                 Sunflower seed oil.

                 Tall.

                 Tall, crude.

                 Tall, distilled.

                 Tall, pitch.

                 Tucum oil.

                 Tung oil.

                 Walnut oil.

                Waxes:

                 Candelilla.

                 Carnauba.

                Zinc alkaryl dithiophosphate (C7-C16)

                Zinc alkyl dithiophosphate (C3-C14)

                35. Vinyl Halides
                Vinyl chloride

                Vinylidene chloride

                36. Halogenated Hydrocarbons
                Benzyl chloride

                Bromochloromethane

                Carbon tetrachloride.1

                Catoxid feedstock.1

                Chlorinated paraffins (C10-C13)

                Chlorinated paraffins (C14-C17) (with 50% Chlorine or more, and less than 1% C13 or shorter chains)

                Chlorinated paraffins (C14-C17) (with 52% Chlorine).

                Chlorinated paraffins (C18+) with any level of Chlorine.

                Chlorobenzene

                Chloroform

                m-Chlorotoluene

                o-Chlorotoluene

                p-Chlorotoluene

                Chlorotoluenes (mixed isomers)

                Dibromomethane.

                Dichlorobenzene (all isomers).

                3,4-Dichloro-1-butene.

                Dichlorodifluoromethane.

                1,1-Dichloroethane

                1,6-Dichlorohexane

                Dichloromethane

                Dichloropropane.

                1,1-Dichloropropane.

                1,2-Dichloropropane.

                1,3-Dichloropropane.

                Ethyl chloride

                Ethylene dibromide

                Ethylene dichloride.1

                Methyl bromide

                Methyl chloride

                Methylene chloride.

                Monochlorodifluoromethane.

                Pentachloroethane.

                Perchloroethylene.

                n-Propyl chloride.

                Sym-trichlorobenzene.

                Tetrachloroethane.

                1,1,2,2-Tetrachloroethane

                1,2,3-Trichlorobenzene (molten)

                1,2,4-Trichlorobenzene

                1,2,3-Trichlorobenzol.

                1,1,1-Trichloroethane.1

                1,1,2-Trichloroethane

                Trichloroethylene.1

                1,1,2-Trichloro-1,2,2-trifluoroethane.

                1,2,3-Trichloropropane.

                37. Nitriles
                Acetonitrile

                Acetonitrile (low purity grade)

                Adiponitrile

                Lactonitrile solution (80% or less)

                2-Methylglutaronitrile

                2-Methylglutaronitrile with 2-Ethylsuccinonitrile (12% or less)

                Propionitrile

                Tallow alkyl nitrile.

                38. Carbon Disulfide (Alternately Disulfide)
                Carbon disulfide (alternately disulphide).

                39. Sulfolane (Alternately Sulfolane)
                Sulfolane (alternately Sulpholane).

                40. Glycol Ethers
                Alkyl (C7-C11) phenol poly(4-12) ethoxylates.

                Alkyl (C9-C15) phenyl propoxylate.

                Diethylene glycol butyl ether

                Diethylene glycol.1

                Diethylene glycol dibutyl ether.

                Diethylene glycol diethyl ether.

                Diethylene glycol ethyl ether

                Diethylene glycol methyl ether

                Diethylene glycol n-hexyl ethe

                Diethylene glycol phenyl ether.r

                Diethylene glycol propyl ether

                Dipropylene glycol.

                Dipropylene glycol butyl ether

                Dipropylene glycol methyl ether

                2-Ethoxyethanol.

                Ethoxy triglycol (crude).

                Ethylene glycol dibutyl ether.

                Ethylene glycol monoalkyl ethers:

                 Ethylene glycol butyl ether.

                 Ethylene glycol tert-butyl ether.

                 Ethylene glycol ethyl ether.

                 Ethylene glycol hexyl ether.

                 Ethylene glycol isopropyl ether.

                 Ethylene glycol methyl butyl ether.

                 Ethylene glycol methyl ether.

                 Ethylene glycol propyl ether.

                 Ethylene glycol n-propyl ether.

                Ethylene glycol phenyl ether.

                Ethylene glycol phenyl ether/Diethylene glycol phenyl ether mixture.

                Glucitol/glycerol blend propoxylated (containing less than 10% amines).

                Glycerol, ethoxylated.

                Glycerol polyalkoxylate.

                Glycerol, propoxylated

                Glycerol, propoxylated and ethoxylated

                Glycerol/Sucrose blend propoxylated and ethoxylated

                alpha-Hydro-omega-hydroxytetradeca (oxytetramethylene)

                Methoxy triglycol

                Nonyl phenol poly(4+)ethoxylates.

                Pentaethylene glycol methyl ether.

                Polyalkylene glycols/Polyalkylene glycol monoalkyl ethers mixtures.

                Poly(2-8)alkylene glycol monoalkyl (C1-C6) ethers:

                 Diethylene glycol butyl ether.

                 Diethylene glycol ethyl ether.

                 Diethylene glycol n-hexyl ether.

                 Diethylene glycol methyl ether.

                 Diethylene glycol propyl ether.

                 Dipropylene glycol butyl ether.

                 Dipropylene glycol methyl ether.

                 Polyalkylene glycol butyl ether.

                 Polyethylene glycol monoalkyl ether.

                 Polypropylene glycol methyl ether.

                 Tetraethylene glycol methyl ether.

                 Triethylene glycol butyl ether.

                 Triethylene glycol ethyl ether.

                 Triethylene glycol methyl ether.

                 Tripropylene glycol methyl ether.

                Polyethylene glycol.

                Polyalkylene glycol butyl ether

                Polyethylene glycol dimethyl ether

                Poly (ethylene glycol) methylbutenyl ether (molecular weight >1000).

                Polypropylene glycol.

                Poly (tetramethylene ether) glycols (molecular weight 950-1050).

                Polytetramethylene ether glycol.

                Propylene glycol monoalkyl ethers:

                 n-Propoxypropanol.

                 Propylene glycol n-butyl ether.

                 Propylene glycol ethyl ether.

                 Propylene glycol methyl ether.

                 Propylene glycol propyl ether.

                Propylene glycol phenyl ether.

                Tetraethylene glycol.

                Triethylene glycol.

                Triethylene glycol butyl ether mixture.

                Triethylene glycol ether mixture.

                Tripropylene glycol.

                41. Ethers
                Alcohol (C12-C13, branched and linear) poly (4-8) propoxy sulfates (alternately sulphates), sodium salt 25-30% solution.

                Alkaryl polyethers (C9-C20).

                tert-Amyl methyl ether

                n-Butyl ether.

                Dichloroethyl ether.

                2,2′-Dichloroisopropyl ether.

                Diethyl ether.

                Dimethyl ether.

                Dimethyl furan

                1,4-Dioxane

                Diphenyl ether

                Diphenyl ether/Diphenyl phenyl ether mixture.

                Ethyl tert-butyl ether.1

                Isopropyl ether

                Long chain alkaryl polyether (C11-C20)

                Methyl-tert-butyl ether.1

                Methyl tert-pentyl ether.

                Methyl tert-pentyl ether.

                Polyether, borated.

                Polyether (molecular weight 1350+).

                Polyether polyols.

                Poly(oxyalkylene) alkenyl ether (molecular weight >1000).

                Polyoxybutylene alcohol

                Propyl ether

                Tetrahydrofuran

                1,3,5-Trioxane.

                42. Nitrocompounds
                o-Chloronitrobenzene

                Dinitrotoluene (molten).

                Nitrobenzene.

                o-Nitrochlorobenzene.

                Nitroethane

                Nitroethane/1-Nitropropane (each 15% or more) mixture.

                Nitrophenol (mixed isomers).

                Nitropropane (60%)/Nitroethane (40%) mixtures.

                1- or 2-Nitropropane.

                Nitropropane, Nitroethane mixtures

                o- or p-Nitrotoluenes.

                43. Miscellaneous Water Solutions
                Alkyl (C8-C10) polyglucoside solution (65% or less).

                Alkyl (C8-C10)/(C12-C14):(40% or less/60% or more) polyglucoside solution (55% or less).

                Alkyl (C8-C10)/(C12-C14):(60% or more/40% or less) polyglucoside solution (55% or less)

                Alkyl (C8-C10) polyglucoside solution (65% or less)

                Alkyl (C8-C10)/(C12-C14):(60% or more/40% or less) polyglucoside solution (55% or less).

                Alkyl (C12-C14) polyglucoside solution (55% or less).

                Aluminum sulfate (alternately Aluminium sulphate) solution.1

                2-Amino-2-hydroxymethyl-1,3-propanediol solution

                Ammonium bisulfite (alternately bisulphite) solution (70% or less).1

                Ammonium chloride solution (less than 25%).

                Ammonium polyphosphate solution

                Ammonium sulfate (alternately sulphate) solution.

                Ammonium sulfate (alternately sulphate) solution (20% or less).

                Ammonium thiosulfate (alternately thiosulphate) solution (60% or less).

                Apple juice.

                Caramel solutions

                Cesium formate solution.

                Clay slurry

                Coal slurry

                Corn syrup

                Dextrose solution

                2,4-Dichlorophenoxyacetic acid, Diethanolamine salt solution

                2,4-Dichlorophenoxyacetic acid, Triisopropanolamine salt solution.1

                Diethylenetriaminepentaacetic acid, pentasodium salt solution.

                Dodecyl diphenyl ether disulfonate (alternately disulphonate) solution.

                Drilling brines (containing Calcium, Potassium, or Sodium salts).

                Drilling brines (containing Zinc salts).

                Drilling brines, including: Calcium bromide solution, Calcium chloride solution, and Sodium chloride solution.

                Drilling mud (low toxicity) (if non-flammable or non-combustible).

                Ethylenediaminetetracetic acid/tetrasodium salt solution.

                Ethylene-Vinyl acetate copolymer (emulsion).

                Ferric hydroxyethylethylenediaminetriacetic acid, trisodium salt solution.1

                Fish solubles (water-based fish meal extracts).

                Fructose solution

                Fumaric adduct of Rosin, water dispersion

                Glucose solution.

                Hexamethylenediamine adipate (50% in water).

                Hexamethylenediamine adipate solution

                N-(Hydroxyethyl)ethylenediamine triacetic acid, trisodium salt solution.

                Kaolin clay solution.

                Kaolin slurry.

                Latex, liquid synthetic.

                Latex: Carboxylated Styrene-Butadiene copolymer; Styrene-butadiene rubber.

                Lauryl polyglucose.

                Lauryl polyglucose (50% or less).

                Lignin liquor

                Ligninsulfonic (alternately Ligninsulphonic) acid, magnesium salt solution.

                Ligninsulfonic (alternately Ligninsulphonic) acid, sodium salt solution.

                Liquid Streptomyces solubles

                L-Lysine solution (60% or less)

                Magnesium nitrate solution (66.7%)

                Microsilica slurry.

                Milk.

                N-Methylglucamine solution

                N-Methylglucamine solution (70% or less)

                Naphthenic acid, sodium salt solution

                Pentasodium salt of Diethylenetriaminepentaacetic acid solution.

                Phenol solutions (2% or less).

                Polyacrylic acid solution (40% or less)

                Potassium chloride solution

                Potassium chloride solution (10% or more).

                Potassium chloride solution (less than 26%)

                Potassium thiosulfate (alternately thiosulphate) (50% or less).

                Rosin soap (disproportionated) solution

                Sewage sludge.

                Silica slurry.

                Sludge, treated.

                Sodium bromide solution (less than 50%)

                Sodium hydrogen sulfite (alternately sulphite) solution (45% or less).

                Sodium lignosulfonate (alternately lignosulphonate) solution.

                  Sodium naphthalene sulfonate solution (40% or less), see Naphthalene sulphonic acid, sodium salt solution (40% or less).

                  Sodium naphthenate solution, see Naphthenic acid, sodium salt solution.

                Sodium poly(4+)acrylate solution.

                Sodium polyacrylate solution.1

                Sodium salt of Ferric hydroxyethylethylenediaminetriacetic acid solution.

                Sodium silicate solution.1

                Sodium sulfide (alternately sulphide) solution (15% or less).

                Sodium sulfite (alternately sulphite) solution (25% or less).

                Sodium tartrates/Sodium succinates solution.

                Sulfonated (alternately Sulphonated) polyacrylate solution.1

                Tall oil soap (disproportionated) solution

                Tetrasodium salt of ethylenediaminetetraacetic acid solution.

                Titanium dioxide slurry

                Triisopropanolamine salt of 2,4-Dichlorophenoxyacetic acid solution

                Trisodium salt of N-(Hydroxyethyl)ethylenediaminetriacetic acid solution.

                Urea solution.

                Urea/Ammonium nitrate solution (containing less than 1% free Ammonia).

                Urea/Ammonium phosphate solution.

                Vegetable protein solution (hydrolyzed).

                Water.

              Notes:

                1 See Appendix I to 46 CFR part 150 (Exceptions to the Chart).

                2 See Appendix I to 46 CFR part 150 (Exceptions to the Chart).

            [78 FR 50187, Aug. 16, 2013, as amended at USCG-2013-0423, 85 FR 21700, Apr. 17, 2020; USCG-2013-0423, 85 FR 27309, May 8, 2020]

            Pt. 150, App. I
            Appendix I to Part 150—Exceptions to the Chart
            (a) The binary combinations listed below have been tested as prescribed in Appendix III to part 150 and found not to be dangerously reactive. These combinations are exceptions to Figure 1 of part 150 (Compatibility Chart) and may be stowed in adjacent tanks.

                Member of reactive group
                Compatible with

                Acetone (18)
                Diethylenetriamine (7).

                Acetone cyanohydrin (0)
                Acetic acid (4).

                Acrylates (14).

                Alcohols, Glycols (20).

                Aldehydes (19).

                Aromatic Hydrocarbon Mixtures (32).

                Carbon Disulfide (alternately Disulphide) (38).

                Esters (34).

                Ethers (41).

                Glycol Ethers (40).

                Halogenated Hydrocarbons (36).

                Ketones (18).

                Miscellaneous Hydrocarbon Mixtures (33).

                Nitriles (37).

                Nitrocompounds (42).

                Olefins (30).

                Paraffins (31).

                Phenols, Cresols (21).

                Substituted Allyls (15).

                Sulfolane (alternately Sulpholane) (39).

                Vinyl Acetate (13).

                Vinyl Halides (35).

                Acrylonitrile (15)
                Triethanolamine (8).

                1,3-Butylene glycol (20)
                Morpholine (7).

                1,4-Butylene glycol (20)
                Ethylamine (7).

                Triethanolamine (8).

                gamma-Butyrolactone (0)
                N-Methyl-2-pyrrolidone (9).

                Caustic potash, 50% or less (5)
                Bio-fuel blends of Gasoline and Ethyl alcohol (>25% but <99% by volume) (20).

                n-Butyl alcohol (20).

                Cetyl alcohol (Hexadecanol) (20).

                Ethyl alcohol (20).

                Ethylene glycol (20).

                Isobutyl alcohol (20).

                Isooctyl alcohol (20).

                Isopropyl alcohol (20).

                Methyl alcohol (20).

                Propylene glycol (20).

                Caustic soda, 50% or less (5)
                Acrylonitrile/Styrene copolymer dispersion in Polyether polyol (20).

                Alcohol (C12-C16) poly(1-6)ethoxylates (20).

                Bio-fuel blends of Gasoline and Ethyl alcohol (>25% but <99% by volume) (20).

                Butyl alcohol (20).

                tert-Butyl alcohol, Methanol mixtures (20).

                Cetyl alcohol (Hexadecanol) (20).

                Decyl alcohol (20).

                Diacetone alcohol (20).

                Diethylene glycol (40).

                Dodecyl alcohol (20).

                Ethyl alcohol (20).

                Ethyl alcohol (40% whiskey) (20).

                Ethylene glycol (20).

                Ethylene glycol, Diethylene glycol mixture (20).

                Ethyl hexanol (Octyl alcohol) (20).

                Isobutyl alcohol (20).

                Isodecyl alcohol (20).

                Isononyl alcohol (20).

                Isopropyl alcohol (20).

                Isotridecanol (20).

                Methyl alcohol (20).

                Nonyl alcohol (20).

                Propyl alcohol (20).

                Propylene glycol (20).

                Sodium chlorate solution (0).

                Dimethyl disulfide (0)
                Acrylates (14).

                Alcohols, Glycols (20).

                Aromatic Hydrocarbon Mixtures (32).

                Esters (34).

                Halogenated Hydrocarbons (36).

                Ketones (18).

                Methyl tert-butyl ether (41).

                Olefins (30).

                Organic Acids (4).

                Organic Anhydrides (11).

                Paraffins (31).

                Phenols, Cresols (21).

                Diphenylmethane diisocyanate (12)
                2,2-Dimethylpropane-1,3-diol (20).

                Polypropylene glycol (40).

                tert-Dodecanethiol (20)
                Caustic soda solution (50%) (5).

                Isopropylamine solution (70%) (7).

                Polymethylene polyphenyl isocyanate (12).

                Toluene diisocyanate (12).

                Dodecyl and Tetradecylamine mixture (7)
                Tall oil, fatty acid (34).

                Ethylenediamine (7)
                Bio-fuel blends of Gasoline and Ethyl alcohol (>25% but <99% by volume) (20).

                Butyl alcohol (20).

                tert-Butyl alcohol (20).

                Butylene glycol (20).

                Creosote (21).

                Diethylene glycol (40).

                Diisobutyl ketone (18).

                Ethyl alcohol (20).

                Ethylene glycol (20).

                Ethyl hexanol (20).

                Fatty alcohols (C12-C14).

                Glycerine (20).

                Isononyl alcohol (20).

                Isophorone (18).

                Methyl butyl ketone (18).

                Methyl ethyl ketone (18).

                Methyl isobutyl ketone (18).

                Propyl alcohol (20).

                Propylene glycol (20).

                Lactic acid (0)
                Acetic acid (4).

                Benzene (32).

                Ethanol (20).

                Polypropylene glycol (40).

                Vinyl acetate (13).

                Oleum (0)
                Hexane (31).

                Dichloromethane (36).

                Perchloroethylene (36).

                1,2-Propylene glycol (20)
                Diethylenetriamine (7).

                Polyethylene polyamines (7).

                Triethylenetetramine (7).

                Sodium cresylate as Cresylate spent caustic (5)
                Methyl alcohol (20).

                Sodium dichromate solution (70% or less) (0)
                Acetone (18).

                n-Butyl alcohol (20).

                Ethyl acetate (34).

                1-Hexene (30).

                Methyl alcohol (20).

                Octene (all isomers) (30).

                Phosphoric acid (1).

                Sodium hydrosulfide (alternately hydrosulphide) solution (45% or less) (5)
                Isopropyl alcohol (20).

                Methyl alcohol (20).

                Sodium Methylate 21-30% in methanol (0)
                1,2-Dichloropropane (36).

                Chlorobenzene (36).

                Cyclohexanone (18).

                Cyclohexanone, Cyclohexanol mixtures (18).

                Diethanolamine (8).

                Diisononyl phthalate (34).

                Dimethylformamide (10).

                Ethyl alcohol (20).

                Ethylene glycol (20).

                Furfuryl alcohol (20).

                Heptene (all isomers) (30).

                Isobutyl alcohol (20).

                Isopropyl alcohol (20).

                Lubricating oil (33).

                Methyl ethyl ketone (18).

                Nonene (all isomers) (30).

                Nonyl alcohol (all isomers) (20).

                Octene (all isomers) (30).

                Perchloroethylene (36).

                Polyisobutenamine in aliphatic (C10-C14) solvent (7).

                o-Toluidine (9).

                Xylene (32).

                Sulfuric (alternately Sulphuric) acid (2)
                Coconut oil (34).

                Coconut oil, fatty acid (34).

                Palm oil (34).

                Soyabean oil (34).

                Tallow (34).

                Sulfuric (alternately Sulphuric) acid, 98% or less (2)
                Choice white grease tallow (34).

                Urea/Ammonium Nitrate solution (containing less than 1% free Ammonia) (43)
                Magnesium chloride solutions (0).

            (b) The binary combinations listed below have been determined to be dangerously reactive, based either on data obtained in the literature or on laboratory testing that has been carried out in accordance with procedures prescribed in Appendix III. These combinations are exceptions to Figure 1 of part 150 (Compatibility Chart) and may not be stowed in adjacent tanks.
            Acetone cyanohydrin (0) is not compatible with Groups 1-12, 16, 17 or 22.

            Acrolein (19) is not compatible with Group 1, Non-Oxidizing Mineral Acids.

            Acrylic acid (4) is not compatible with Group 9, Aromatic Amines.
            Acrylonitrile (15) is not compatible with Group 5, Caustics.
            Alkyl (C7-C9) nitrates (34) is not compatible with Group 1, Non-Oxidizing Mineral Acids.
            Alkylbenzene sulfonic (alternately sulphonic) acid (less than 4%) (0) is not compatible with Groups 1-3, 5-9, 15, 16, 18, 19, 30, 34, 37, or strong oxidizers.
            Allyl alcohol (15) is not compatible with Group 12, Isocyanates.
            Aluminum sulfate (alternately Aluminium sulphate) solution (43) is not compatible with Groups 5-11.
            Ammonium bisulfite (alternately bisulphite) solution (70% or less) (43) is not compatible with Groups 1 or 3-5.
            Benzenesulfonyl (alternately Benzenesulphonyl) chloride (0) is not compatible with Groups 5-7, or 43.
            Butylene glycol (20) is not compatible with Caustic soda solution (5).
            gamma-Butyrolactone (0) is not compatible with Groups 1-9.
            C9 Resinfeed (DSM) (32) is not compatible with Group 2, Sulfuric (alternately Sulphuric) Acids.
            Carbon tetrachloride (36) is not compatible with Tetraethylenepentamine or Triethylenetetramine, both Group 7, Aliphatic Amines.
            Catoxid feedstock (36) is not compatible with Groups 1-5, or 12.
            Caustic soda solution (5) is not compatible with Butylene glycol (20).
            1-(4-Chlorophenyl)-4,4-dimethyl pentan-3-one (18) is not compatible with Group 5, Caustics, or Group 10, Amides.
            Crotonaldehyde (19) is not compatible with Group 1, Non-Oxidizing Mineral Acids.
            Cyclohexanone/Cyclohexanol mixture (18) is not compatible with Group 12, Isocyanates.
            2,4-Dichlorophenoxyacetic acid, Dimethylamine salt solution (70% or less) (0) is not compatible with Groups 1-5, 11, 12, or 16.
            2,4-Dichlorophenoxyacetic acid, Triisopropanolamine salt solution (43) is not compatible with Group 3, Nitric Acids.
            Diethylenetriamine (7) is not compatible with 1,2,3-Trichloropropane, Group 36, Halogenated Hydrocarbons.
            Dimethyl hydrogen phosphite (34) is not compatible with Groups 1 or 4.
            Dimethyl naphthalene sulfonic (alternately sulphonic) acid, sodium salt solution (34) is not compatible with Group 12, or Formaldehyde, or with strong oxidizing agents.
            Dodecylbenzenesulfonic (alternately Dodecylbenzenesulphonic) acid (0) is not compatible with oxidizing agents or Groups 1-3, 5-9, 15, 16, 18, 19, 30, 34, or 37.
            Ethyl tert-butyl ether (41) is not compatible with Group 1, Non-Oxidizing Mineral Acids.
            Ethylenediamine (7) and Ethyleneamine EA 1302 (7) are not compatible with either Ethylene dichloride (36) or 1,2,3-Trichloropropane (36).
            Ethylene dichloride (36) is not compatible with Ethylenediamine (7) or Ethyleneamine EA 1302 (7).
            Ethylidene norbornene (30) is not compatible with Groups 1-3 or 5-8.
            2-Ethyl-3-propylacrolein (19) is not compatible with Group 1, Non-Oxidizing Mineral Acids.
            Fatty acids, essentially linear (C6-C18) 2-ethylhexyl ester (34) is not compatible with Group 3, Nitric Acids.
            Ferric hydroxyethylethylenediamine triacetic acid, Triodium salt solution (43) is not compatible with Group 3, Nitric Acids.
            Fish oil (34) is not compatible with Sulfuric (alternately Sulphuric) acid (2).
            Formaldehyde (50% or more) in Methyl alcohol (over 30%) (19) is not compatible with Group 12, Isocyanates.
            Formic acid (4) is not compatible with Furfuryl alcohol (20).
            Furfuryl alcohol (20) is not compatible with Group 1, Non-Oxidizing Mineral Acids, or with Formic acid (4).
            1,6-Hexanediol distillation overheads (4) is not compatible with Group 3, Nitric Acids, or Group 9, Aromatic Amines.
            2-Hydroxyethyl acrylate (14) is not compatible with Groups 5, 6, or 12.
            Isophorone (18) is not compatible with Group 8, Alkanolamines.
            Lactic acid (0) is not compatible with Caustic soda solution (5).
            Magnesium chloride solution (0) is not compatible with Groups 2, 3, 5, 6, or 12.
            Mesityl oxide (18) is not compatible with Group 8, Alkanolamines.
            Methacrylonitrile (15) is not compatible with Group 5, Caustics.
            Methyl tert-butyl ether (41) is not compatible with Group 1, Non-Oxidizing Mineral Acids.
            Nitroethane/1-Nitropropane (each 15% or more) mixture (42) is not compatible with Group 7, Aliphatic Amines; Group 8, Alkanolamines; or Group 9, Aromatic Amines.
            o-Nitrophenol (0) is not compatible with Groups 2, 3, or 5-10.
            Nitropropane (60%)/Nitroethane (40%) mixture (42) is not compatible with Group 7, Aliphatic Amines; Group 8, Alkanolamines; or Group 9, Aromatic Amines.
            Oleum (0) is not compatible with Sulfuric (alternately Sulphuric) acid (2) or 1,1,1-Trichloroethane (36).
            Phthalate-based polyester polyol (0) is not compatible with Groups 2, 3, 5, 7, or 12.

            Polyglycerine, Sodium salts solution (containing less than 3% sodium hydroxide) (20) is not compatible with Groups 1, 4, 11, 16, 17, 19, 21, or 22.
            Propylene, Propane, MAPP gas mixture (containing 12% or less MAPP gas) (30) is not compatible with Group 1, Non-Oxidizing Mineral Acids, Group 36, Halogenated Hydrocarbons, or with nitrogen dioxide, oxidizing agents, or molten sulfur (alternately sulphur) (0).
            Sodium acetate, Glycol, Water mixture (containing 1% or less Sodium hydroxide) (5) is not compatible with Group 12, Isocyanates.
            Sodium chlorate solution (50% or less) (0) is not compatible with Groups 1-3, 5, 7, 8, 10, 12, 13, 17, or 20.
            Sodium dichromate solution (70% or less) (0) is not compatible with Groups 1-3, 5, 7, 8, 10, 12, 13, 17, or 20.
            Sodium dimethyl naphthalene sulfonate solution (34) is not compatible with Group 12, or Formaldehyde, or strong oxidizing agents.
            Sodium hydrogen sulfide (alternately sulphide) (6% or less)/Sodium carbonate solution (3% or less) (0) is not compatible with Group 6, Ammonia, or Group 7, Aliphatic Amines.
            Sodium hydrosulfide (alternately hydrosulphide) solution (45% or less) (5) is not compatible with Group 6, Ammonia, or Group 7, Aliphatic Amines.
            Sodium hydrosulfide (alternately hydrosulphide), Ammonium sulfide (alternately sulphide) solution (5) is not compatible with Group 6, Ammonia, or Group 7, Aliphatic Amines.
            Sodium polyacrylate solution (43) is not compatible with Group 3, Nitric Acids.
            Sodium silicate solution (43) is not compatible with Group 3, Nitric Acids.
            Sodium sulfide, hydrosulfide (alternately sulphide, hydrosulphide) solution (0) is not compatible with Group 6, Ammonia, or Group 7, Aliphatic Amines.
            Sodium thiocyanate (56% or less) (0) is not compatible with Groups 1-4.
            Sulfonated (alternately Sulphonated) polyacrylate solution (43) is not compatible with Group 5, Caustics.
            Sulfuric (alternately Sulphuric) acid (2) is not compatible with Fish oil (34), or Oleum (0).
            Tall oil fatty acid (Resin acids less than 20%) (34) is not compatible with Group 5, Caustics.
            Tallow fatty acid (34) is not compatible with Group 5, Caustics.
            Tetraethylenepentamine (7) is not compatible with Carbon tetrachloride, Group 36, Halogenated Hydrocarbons.
            1,1,1-Trichloroethane (36) is not compatible with Oleum (0).
            Trichloroethylene (36) is not compatible with Group 5, Caustics.
            1,2,3-Trichloropropane (36) is not compatible with Diethylenetriamine, Ethylenediamine, Ethyleaneamine EA 1302, or Triethylenetetramine, all Group 7, Aliphatic Amines.
            Triethylenetetramine (7) is not compatible with Carbon tetrachloride, or 1,2,3-Trichloropropane, both Group 36, Halogenated Hydrocarbons.
            Triethyl phosphite (34) is not compatible with Group 1, Non-Oxidizing Mineral Acids, or Group 4, Organic Acids.
            Trimethyl phosphite (34) is not compatible with Group 1, Non-Oxidizing Mineral Acids, or Group 4, Organic Acids.
            1,3,5-Trioxane (41) is not compatible with Group 1, Non-Oxidizing Mineral Acids, or Group 4, Organic Acids.
            Vinyl neodecanoate (13) is not compatible with Group 5, Caustics.
            [78 FR 50205, Aug. 16, 2013, as amended at USCG-2013-0423, 85 FR 21700, Apr. 17, 2020]

            Pt. 150, App. II
            Appendix II to Part 150—Explanation of Figure 1

              Definition of a hazardous reaction— As a first approximation, a mixture of two cargoes is considered hazardous when, under specified condition, the temperature rise of the mixture exceeds 25 °C or a gas is evolved. It is possible for the reaction of two cargoes to produce a product that is significantly more flammable or toxic than the original cargoes even though the reaction is non-hazardous from temperature or pressure considerations, although no examples of such a reaction are known at this time.

              Chart format— There are different degrees of reactivity among the various cargoes. Many of them are relatively non-reactive: For example, aromatic hydrocarbons or paraffins. Others will form hazardous combinations with many groups: For example, the inorganic acids.
            The cargo groups in the compatibility chart are separated into two categories: 1 through 22 are “Reactive Groups” and 30 through 43 are “Cargo Groups”. Left unassigned and available for future expansion are groups 23 through 29 and those past 43. Reactive Groups contain products which are chemically the most reactive; dangerous combinations may result between members of different Reactive Groups and between members of Reactive Groups and Cargo Groups. Products assigned to Cargo Groups, however, are much less reactive; dangerous combinations involving these can be formed only with members of certain Reactive Groups. Cargo Groups do not react hazardously with one another.

              Using the Compatibility Chart— The following procedure explains how the compatibility chart should be used to find compatibility information:

            (1) Determine the group numbers of the two cargoes by referring to the alphabetical listing of cargoes and the corresponding groups (Table I). Many cargoes are listed under their parent names; unless otherwise indicated, isomers or mixtures of isomers of a particular cargo are assigned to the same group. For example, to find the group number for Isobutyl Alcohol, look under the parent name Butyl Alcohol. Similarly, the group number for para-Xylene is found under the entry Xylene. If a cargo cannot be found in this listing, contact the Coast Guard for a group determination (see § 150.140).
            (2) If both group numbers are between 30 and 43 inclusive, the products are compatible and the chart need not be used.
            (3) If both group numbers do not fall between 30 and 43 inclusive, locate one of the numbers on the left of the chart (Cargo Groups) and the other across the top (Reactive Groups). (Note that if a group number is between 30 and 43, it can only be found on the left side of the chart.) The box formed by the intersection of the column and row containing the two numbers will contain one of the following:
            (a) Blank—The two cargoes are compatible.
            (b) “X”—The two cargoes are not compatible.

            (Note that reactivity may vary among the group members. Refer to Table I or Table II to find whether the products in question are referenced by a footnote which indicates that exceptions exist and are listed in Appendix I. Unless the combination is specifically mentioned in Appendix I, it is compatible.)

              Examples

                Combination
                Groups
                Compatible

                Butyraldehyde/Acetic Acid
                19/4
                Yes.

                Allyl Alcohol/Toluene Diisocyanate
                15/12
                No.

                Decene/Ethyl Benzene
                30/32
                Yes.

                Ethanolamine/Acetone
                8/18
                Yes.

                Ammonia/Dimethylformamide
                6/10
                No.

            [CGD 75-59, 45 FR 70263, Oct. 23, 1980, as amended by CGD 83-047, 50 FR 33046, Aug. 16, 1985]

            Pt. 150, App. III
            Appendix III to Part 150—Testing Procedures for Determining Exceptions to the Chart
            experimental procedure for evaluating binary chemical reactivity

              General safety precautions—Chemical reactivity tests have, by their nature, serious potential for injuring the experimenter or destroying equipment. The experimenter should 1) have knowledge of the magnitude of the reactivity to be expected, 2) use adequate facilities and protective equipment to prevent injury from splatter of materials or release of fumes, and 3) start on a small scale so that unexpected reactions can be safely contained. All tests should be performed in a well-ventilated laboratory hood provided with shields.

              Testing chemicals other than liquids—The procedure outlined below was developed for chemicals which are liquids at ambient temperatures. If one or both chemicals are normally shipped at elevated temperatures, the same procedure may be followed except the chemicals are tested at their respective shipping temperatures and the oil bath in Step 3 is maintained at a level 25 °C above the higher temperature. This information is then indicated on the data sheet. If one of the chemicals is a gas at ambient temperatures, consult the Coast Guard for additional instructions before proceeding with the compatibility test.
            Step 1
            Objective—To determine if the test chemicals react violently and present a safety hazard in further tests.
            Procedure—Place 0.5ml of one (A) of the test chemicals in a 25 × 150mm test tube. Clamp the test tube to a stand behind a safety shield (in a hood). Carefully add from a dropper 0.5ml of the other substance (B). Shake to induce mixing. If no immediate reaction occurs, retain the mixture for at least 10 minutes to check for a delayed reaction.
            Results—If a violent reaction occurs, such as sputtering, boiling of reactants or release of fumes, record the results on the Data Sheet (appendix IV) and do not proceed to Step 2. If no reaction or a minor reaction occurs, proceed to Step 2.
            Step 2
            Objective—To determine the heat of reaction of two chemicals on mixing under specified conditions.
            Procedure—These separate mixes of the proposed binary combination will be tested. These are 2 ml : 18 ml, 10 ml : 10 ml, and 18 ml : 2 ml, respectively, to result in a final mixture of about 20 ml in each case.

            A reference-junctioned thermocouple is prepared by inserting two lengths of 20 gauge or finer iron-constantan or chromelalumel duplex thermocouple wire into glass capilary sheaths. The common wire of each probe is joined, while the other wire of each is connected to a strip-chart recorder. The thermocouple probe which produces a negative pen deflection upon warming is the reference junction and is placed in a test tube of water at ambient laboratory temperature. The other probe is placed near the bottom of a Dewar flask of about 300ml capacity, such that the thermocouple will be below the surface of the test mixture. The Dewar flask is equipped with a magnetic stirrer having a stirring bar coated with an inert material such as a fluorinated hydrocarbon.

            Start the temperature recorder and stirrer. Deliver the test chemicals to the Dewar Flask simultaneously from separate graduated syringes. If an exothermic reaction occurs, continue the test until the maximum temperature is reached and begins to subside. If no apparent reaction occurs, continue the test for at least 30 minutes to check for a delayed reaction. Stop agitation and observe the mixture at five-minute intervals to determine if the mixture is miscible, if gases are evolved, or if other visible changes occur. In the interest of safety, a mirror can be used for these observations. Repeat the above test for the other mixture combinations.
            Results—Record the results in the appropriate places on the Data Sheet. If no reaction occurs or if the temperature rise is less than 25 °C, proceed to Step 3. If the observed temperature rise exceeds 25 °C or gases are evolved, do not proceed to Step 3.
            Step 3
            Objective—To determine if exothermic reactions occur at temperatures up to 50 °C.
            Procedure—If a non-hazardous reaction occurred in Step 2, the ratio of chemicals which resulted in the greatest temperature rise will be tested. Fresh chemicals will be used with a total volume for this test of about 10ml (a ratio of 1ml:9ml, 5ml:5ml, or 9ml:1ml). If no reaction was observed in Step 2, use a ratio of 5ml:5ml. Using the thermocouple prepared for Step 2, insert the reference probe into a 25 × 150mm test tube containing 10ml of water. Place the other probe into an empty test tube. Start the temperature recorder and add the two chemicals of the combination, one at a time, to the empty test tube. Lower the two test tubes into an oil bath maintained at 50 ±2 °C. Hold the samples in the oil bath until the maximum temperature differential is recorded, and in all cases at least 15 minutes. Observe the test mixture to determine if gases are evolved or if other visible changes occur. Follow prescribed safety precautions.
            Results—Record the maximum differential temperature measured, the time required to reach this temperature, and any other observations in the proper space on the Data Sheet.
            Send a copy of the Data Sheet for each binary chemical mixture tested to: Commandant (CG-ENG-5), Attn: Hazardous Materials Division, U.S. Coast Guard Stop 7509, 2703 Martin Luther King Jr. Avenue SE., Washington, DC 20593-7509.
            [CGD 75-59, 45 FR 70263, Oct. 23, 1980, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983; CGD 83-047, 50 FR 33046, Aug. 16, 1985; CGD 88-070, 53 FR 34535, Sept. 7, 19885; CGD 96-041, 61 FR 50731, Sept. 27, 1996; USCG-2012-0832, 77 FR 59783, Oct. 1, 2012; USCG-2013-0671, 78 FR 60155, Sept. 30, 2013; USCG-2014-0688, 79 FR 58284, Sept. 29, 2014]

            Pt. 150, App. IV
            Appendix IV to Part 150—Data Sheet

              EC02FE91.080

              EC02FE91.081

          Pt. 151
          PART 151—BARGES CARRYING BULK LIQUID HAZARDOUS MATERIAL CARGOES

              Subpart 151.01—General
              Sec.
              151.01-1
              Applicability.
              151.01-2
              Incorporation by reference.
              151.01-3
              [Reserved]
              151.01-5
              [Reserved]
              151.01-10
              Application of vessel inspection regulations.
              151.01-15
              Dangerous cargoes not specifically named.
              151.01-20
              Use of minimum requirements.
              151.01-25
              Existing barges.
              151.01-30
              Effective date.
              151.01-35
              Right of appeal.

              Subpart 151.02—Equivalents
              151.02-1
              Conditions under which equivalents may be used.
              151.02-5
              Design of unmanned barges.

              Subpart 151.03—Definitions
              151.03-1
              Definitions of terms.
              151.03-3
              Angle of downflooding.
              151.03-5
              Approved.
              151.03-7
              Barge.
              151.03-9
              Cargo.
              151.03-11
              Coastwise.
              151.03-13
              Cofferdam.
              151.03-15
              Commandant.
              151.03-17
              Compatible.
              151.03-19
              Environment.
              151.03-21
              Filling density.
              151.03-23
              Flame arrestor.
              151.03-25
              Flame screen.

              151.03-27
              Gas free.
              151.03-29
              Great Lakes.
              151.03-30
              Hazardous material.
              151.03-31
              Headquarters.
              151.03-33
              Lakes, bays, and sounds.
              151.03-35
              Limiting draft.
              151.03-36
              Liquid.
              151.03-37
              Maximum allowable working pressure.
              151.03-38
              Nondestructive testing.
              151.03-39
              Ocean.
              151.03-41
              Officer in Charge, Marine Inspection (OCMI).
              151.03-43
              Pressure.
              151.03-45
              Rivers.
              151.03-47
              Service.
              151.03-49
              Sounding tube.
              151.03-51
              Tank barge.
              151.03-53
              Tankerman.
              151.03-55
              [Reserved]

              Subpart 151.04—Inspection and Certification
              151.04-1
              Certificate of inspection.
              151.04-2
              Inspection required.
              151.04-3
              Initial inspection.
              151.04-5
              Inspection for certification.
              151.04-7
              Nondestructive testing.

              Subpart 151.05—Summary of Minimum Requirements for Specific Cargoes
              151.05-1
              Explanation of column headings in Table 151.05.
              151.05-2
              Compliance with requirements for tank barges carrying benzene and benzene containing cargoes, or butyl acrylate cargoes.
              Table 151.05 to Subpart 151.05 of Part 151—Summary of Minimum Requirements

              Subpart 151.10—Barge Hull Construction Requirements
              151.10-1
              Barge hull classifications.
              151.10-5
              Subdivision and stability.
              151.10-15
              Certificate endorsement.
              151.10-20
              Hull construction.

              Subpart 151.12—Equipment and Operating Requirements for Control of Pollution From Category D NLS Cargoes
              151.12-5
              Equipment for Category D NLS.
              151.12-10
              Operation of oceangoing non-self-propelled ships carrying Category D NLS.

              Subpart 151.13—Cargo Segregation
              151.13-1
              General.
              151.13-5
              Cargo segregation—tanks.

              Subpart 151.15—Tanks
              151.15-1
              Tank types.
              151.15-3
              Construction.
              151.15-5
              Venting.
              151.15-6
              Venting piping.
              151.15-10
              Cargo gauging devices.

              Subpart 151.20—Cargo Transfer
              151.20-1
              Piping—general.
              151.20-5
              Cargo system valving requirements.
              151.20-10
              Cargo system instrumentation.
              151.20-15
              Cargo hose if carried on the barge.
              151.20-20
              Cargo transfer methods.

              Subpart 151.25—Environmental Control
              151.25-1
              Cargo tank.
              151.25-2
              Cargo handling space.

              Subpart 151.30—Portable Fire Extinguishers
              151.30-1
              Type.

              Subpart 151.40—Temperature or Pressure Control Installations
              151.40-1
              Definitions.
              151.40-2
              Materials.
              151.40-5
              Construction.
              151.40-10
              Operational requirements.
              151.40-11
              Refrigeration systems.

              Subpart 151.45—Operations
              151.45-1
              General.
              151.45-2
              Special operating requirements.
              151.45-3
              Manning.
              151.45-4
              Cargo-handling.
              151.45-5
              Open hopper barges.
              151.45-6
              Maximum amount of cargo.
              151.45-7
              Shipping papers.
              151.45-8
              Illness, alcohol, drugs.
              151.45-9
              Signals.

              Subpart 151.50—Special Requirements
              151.50-1
              General.
              151.50-5
              Cargoes having toxic properties.
              151.50-6
              Motor fuel antiknock compounds.
              151.50-10
              Alkylene oxides.
              151.50-12
              Ethylene oxide.
              151.50-13
              Propylene oxide.
              151.50-20
              Inorganic acids.
              151.50-21
              Sulfuric acid.
              151.50-22
              Hydrochloric acid.
              151.50-23
              Phosphoric acid.
              151.50-30
              Compressed gases.
              151.50-31
              Chlorine.
              151.50-32
              Ammonia, anhydrous.
              151.50-34
              Vinyl chloride (vinyl chloride monomer).
              151.50-36
              Argon or nitrogen.
              151.50-40
              Additional requirements for carbon disulfide (carbon bisulfide) and ethyl ether.
              151.50-41
              Carbon disulfide (carbon bisulfide).
              151.50-42
              Ethyl ether.
              151.50-50
              Elemental phosphorus in water.
              151.50-55
              Sulfur (molten).

              151.50-60
              Benzene.
              151.50-70
              Cargoes requiring inhibition or stabilization.
              151.50-73
              Chemical protective clothing.
              151.50-74
              Ethylidene norbornene.
              151.50-75
              Ferric chloride solution.
              151.50-76
              Hydrochloric acid, spent (NTE 15%).
              151.50-77
              Fluorosilicic acid (30% or less) (hydrofluorosilicic acid).
              151.50-79
              Methyl acetylene-propadiene mixture.
              151.50-80
              Nitric acid (70% or less).
              151.50-81
              Special operating requirements for heat sensitive cargoes.
              151.50-84
              Sulfur dioxide.
              151.50-86
              Alkyl (C7-C9) nitrates.

              Subpart 151.55—Special Requirements for Materials of Construction
              151.55-1
              General.

              Subpart 151.56—Prohibited Materials of Construction
              151.56-1
              Prohibited materials.

              Subpart 151.58—Required Materials of Construction
              151.58-1
              Required materials.

            Authority:
            33 U.S.C. 1903; 46 U.S.C. 3703; Department of Homeland Security Delegation No. 0170.1.

            Source:
            CGFR 70-10, 35 FR 3714, Feb. 25, 1970, unless otherwise noted.

            Editorial Note:
            Nomenclature changes to part 151 appear by USCG-2009-0702, 74 FR 49236, Sept. 25, 2009, and USCG-2012-0832, 77 FR 59784, Oct. 1, 2012.

            Subpart 151.01—General

              § 151.01-1
              Applicability.
              This part applies to the following:
              (a) Oceangoing, as defined in 33 CFR 151.05(j), non-self-propelled United States ships and non-self-propelled foreign ships operating in United States waters that carry a bulk cargo that is—
              (1) Listed in Table 151.05;
              (2) Not being carried in a portable tank regulated under subpart 98.30 or 98.33 of this chapter; and
              (3) Not an NLS or is an NLS cargo that is a Category D listed in § 151.12-5 of this part.
              (b) All non-self-propelled United States ships that are not oceangoing that carry a bulk cargo that is—
              (1) Listed in Table 151.05, and
              (2) Not being carried in a portable tank regulated under subpart 98.30 or 98.33 of this chapter.
              [CGD 81-101, 52 FR 7776, Mar. 12, 1987, as amended by CGD 84-043, 55 FR 37413, Sept. 11, 1990]

              § 151.01-2
              Incorporation by reference.

              (a) Certain standards and specifications are incorporated by reference into this part with the approval of the Director of the Federal Register in accordance with 5 U.S.C. 552(a). To enforce any edition other than the ones listed in paragraph (b) of this section, notice of change must be published in the Federal Register and the material made available to the public. All approved material is on file at the National Archives and Records Administration (NARA), and is available from the sources indicated in paragraph (b) of this section. For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.

              (b) The standards and specifications approved for incorporation by reference in this part and the sections affected, are:

                American Society for Nondestructive Testing (ASNT)
                4153 Arlingate Road, Caller #28518, Columbus, OH 43228-0518

                  ASNT “Recommended Practice No. SNT-TC-1A (1988), Personnel Qualification and Certification in Nondestructive Testing”
                  151.04-7(c)(2)

                American Society of Mechanical Engineers (ASME) International
                Three Park Avenue, New York, NY 10016-5990

                  ASME Boiler and Pressure Vessel Code Section V, Nondestructive Examination (1986)
                  151.04-7(a)(1)

                American Society for Testing and Materials (ASTM)
                100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.

                  ASTM D 4986-98, Standard Test Method for Horizontal Burning Characteristics of Cellular Polymeric Materials
                  151.15-3
                  ASTM E 84-98, Standard Test Method for Surface Burning Characteristics of Building Materials—151.15-3

              [CGD 85-061, 54 FR 50965, Dec. 11, 1989, as amended by USCG-1999-6216, 64 FR 53227, Oct. 1, 1999; USCG-1999-5151, 64 FR 67183, Dec. 1, 1999; 69 FR 18803, Apr. 9, 2004]

              § 151.01-3
              [Reserved]

              § 151.01-5
              [Reserved]

              § 151.01-10
              Application of vessel inspection regulations.
              (a) The regulations in this part are requirements which may be in addition to, supplement, or modify requirements in other subchapters in this chapter. When a specific requirement in another part or section in another subchapter in this chapter is in conflict with or contrary to requirement or intent expressed in this part, the regulations in this part shall take precedence.
              (b) Every unmanned tank barge which carries or is intended to carry in bulk any liquid or liquefied gas listed in Table 151.05 and has flammability or combustibility characteristics as indicated by a fire protection requirement in Table 151.05 shall be inspected and certificated under the provisions in subchapter D (Tank Vessels) of this chapter and the regulations in this part.
              (c) Every unmanned tank barge prior to the carriage in bulk of any liquid or liquefied gas listed in Table 151.05 which does not have the flammability or combustibility characteristics as indicated by the fire protection requirement in Table 151.05 shall be inspected and certificated under the applicable provisions of subchapter D or subchapter I of this chapter, at the option of the barge owner, in addition to the regulations in this part. However, unless the barge owner notifies the Officer in Charge, Marine Inspection of his option to have the barge inspected and certificated under subchapter I at the time he submits the application for inspection (Form CG-3752), the unmanned tank barge shall be inspected and certificated under the provisions of subchapter D of this chapter and the regulations in this part.
              (c-1) Each unmanned tank barge constructed on or after September 6, 1977, that carries in bulk a cargo listed in Table 151.05 and that is certificated under subchapter I of this chapter must meet the loading information requirements in § 31.10-32 of this chapter.
              (d) The provisions of subchapter D of this chapter shall apply to all unmanned tank barges which carry in bulk any of the liquids or liquefied gases listed in Table 30.25-1 of this chapter. The provisions of this part shall not apply to such barges unless it is also desired to carry one or more of the liquids or liquefied gases listed in Table 151.05.
              (e) Manned barges which carry or intend to carry in bulk the cargoes specified in Table 151.05 will be considered individually by the Commandant and may be required to meet the requirements of this subchapter and of subchapter D (Tank Vessels) or I (Cargo and Miscellaneous Vessels) of this chapter as applicable.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970]

                Editorial Note:
                For Federal Register citations affecting § 151.01-10, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.govinfo.gov.

              § 151.01-15
              Dangerous cargoes not specifically named.
              (a) Any liquid or liquefied gas, which meets the definitions referred to in § 151.01-1 and is not named in Table 151.05 or Table 30.25-1 of this chapter shall not be transported in bulk in a manned or unmanned tank barge without the prior specific approval of the Commandant.
              (b) Mixtures or blends of two or more cargoes, one or more of which appears in Table 151.05, will be treated as though they were new products and specific approval of the Commandant must be obtained prior to undertaking their transportation.
              [CGFR-70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 81-101, 52 FR 7777, Mar. 12, 1987; CGD 81-101, 53 FR 28974, Aug. 1, 1988 and 54 FR 12629, Mar. 28, 1989; CGD 88-100, 54 FR 40029, Sept. 29, 1989]

              § 151.01-20
              Use of minimum requirements.

              (a) The minimum requirements governing transportation of any liquid or liquefied gas listed in Table 151.05 are set forth in this part when such substances are carried in bulk in unmanned tank barges.
              (b) Before any liquid or liquefied gas listed in Table 151.05 may be carried in an unmanned tank barge, the certificate of inspection issued to such barge shall be appropriately endorsed to show approval to transport such cargo.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-100, 54 FR 40029, Sept. 29, 1989]

              § 151.01-25
              Existing barges.
              (a) Except as provided in paragraph (c) of this section, barges certified for, or used within the previous 2 years prior to the effective date of this regulation, or barges equivalent to such barges, for the transportation of any cargo regulated by this subchapter which do not meet the specific requirements herein, may be continued in service subject to the following conditions:
              (1) Venting, gauging, and all operating requirements shall be met within a 1-year period subsequent to the effective date.
              (2) All other requirements shall be met within a 2-year period subsequent to the effective date.
              (b) If an existing barge, which has been designed to carry or has regularly been carrying one or more of the cargoes regulated by this subchapter, is found to be so arranged, or outfitted that conversion to bring it into compliance with any or all of the requirements of this subchapter is impractical or impossible, the Commandant, upon application, may review the plans of the barge to determine if it is suitable and safe for the cargoes to be transported.
              (c) Except for operating and vinyl chloride requirements, barges constructed and certificated for the transportation of any cargo for which specific regulations existed, in parts 36, 38, 39, 40, and 98 of this chapter at the time of their construction or conversion, may continue and will be certificated to operate without the requirement that they comply with the provisions of subchapter O of this chapter.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 74-167k, 40 FR 17026, Apr. 16, 1975]

              § 151.01-30
              Effective date.

              (a) The regulations in this subchapter are effective on and after June 1, 1970. However, amendments, revisions, or additions shall become effective ninety (90) days after the date of publication in the Federal Register unless the Commandant shall fix a different time.
              (b) The regulations in this subchapter are not retroactive in effect unless specifically made so at the time the regulations are issued. Changes in specification requirements of articles of equipment, or materials used in construction of tank barges, shall not apply to such items which have been passed as satisfactory until replacement shall become necessary, unless a specific finding is made that such equipment or materials used is unsafe or hazardous and has to be removed from tank barges.

              § 151.01-35
              Right of appeal.
              Any person directly affected by a decision or action taken under this part, by or on behalf of the Coast Guard, may appeal therefrom in accordance with subpart 1.03 of this chapter.
              [CGD 88-033, 54 FR 50381, Dec. 6, 1989]

            Subpart 151.02—Equivalents

              § 151.02-1
              Conditions under which equivalents may be used.
              (a) Where in this part it is provided that a particular fitting, material, appliance, apparatus, or equipment, or type thereof, shall be fitted or carried in a vessel, or that any particular provision shall be made or arrangement including cargo segregation shall be adopted, the Commandant may accept in substitution therefor any other fitting, material, apparatus or equipment, or type thereof, or any other provision or arrangement. However, the Commandant shall be satisfied by suitable evidence that the fitting, material, appliance, apparatus, or equipment, or the type thereof, or the provision or arrangement shall be at least as effective as that specified in this part.

              (b) In any case where it is shown to the satisfaction of the Commandant that the use of any particular equipment, apparatus, or arrangement not specifically required by law is unreasonable or impracticable, the Commandant may permit the use of alternate equipment apparatus, or arrangement to such an extent and upon such conditions as will insure, to his satisfaction, a degree of safety consistent with the minimum standards set forth in this part.

              § 151.02-5
              Design of unmanned barges.
              (a) In order not to inhibit design and application, the Commandant may approve vessels of novel design, both new and for conversion, after it is shown to his satisfaction that such a vessel is at least as safe as any vessel which meets the standards required by this part.
              (b) [Reserved]

            Subpart 151.03—Definitions

              § 151.03-1
              Definitions of terms.
              Certain terms used in the regulations in this subchapter are defined in this subpart.

              § 151.03-3
              Angle of downflooding.
              The angle of heel of the vessel at which any opening in the hull not provided with a water tight closure would be immersed.

              § 151.03-5
              Approved.
              This term means approved by the Commandant unless otherwise stated.

              § 151.03-7
              Barge.
              This term means any non-self-propelled vessel designed to carry cargo.

              § 151.03-9
              Cargo.
              This term means any liquid, gas or solid having one or more of the dangerous properties defined in this subchapter.

              § 151.03-11
              Coastwise.
              This designation refers to all vessels normally navigating the waters of any ocean or the Gulf of Mexico 20 nautical miles or less offshore.

              § 151.03-13
              Cofferdam.
              This term means a void or empty space separating two or more compartments for the purpose of isolation or to prevent the contents of one compartment from entering another in the event of the failure of the walls of one to retain their tightness.

              § 151.03-15
              Commandant.
              This term means Commandant of the U.S. Coast Guard.

              § 151.03-17
              Compatible.
              Compatible means that a cargo will not react in an unsafe manner with other cargo or materials used in construction of the barge. The prime considerations are the chemical, physical, or thermal properties of the reaction including heat, pressure, toxicity, stability, and explosive nature of the reaction and its end products.

              § 151.03-19
              Environment.
              This term refers to the atmosphere within a cargo tank and the spaces adjacent to the tank or spaces in which cargo is handled.

              § 151.03-21
              Filling density.
              The ratio, expressed as a percentage, of the weight of cargo that may be loaded into a tank compared to the weight of water that the tank will hold at 60 °F. The weight of a gallon of water at 60 °F in air shall be 8.32828 pounds.

              § 151.03-23
              Flame arrestor.
              Any device or assembly of cellular, tubular, pressure or other type used for preventing the passage of flames into enclosed spaces.

              § 151.03-25
              Flame screen.
              A fitted single screen of corrosion-resistant wire of at least 30 by 30 mesh or two fitted screens, both of corrosion-resistant wire, of at least 20 by 20 mesh spaced not less than one-half inch or more than 11/2 inches apart.

              § 151.03-27
              Gas free.
              Free from dangerous concentrations of flammable or toxic gases.

              § 151.03-29
              Great Lakes.
              A designation for all vessels in Great Lakes service.

              § 151.03-30
              Hazardous material.
              In this part hazardous material means a liquid material or substance that is—
              (a) Flammable or combustible;
              (b) Designated a hazardous substance under section 311(b) of the Federal Water Pollution Control Act (33 U.S.C. 1321); or

              (c) Designated a hazardous material under 49 U.S.C. 5103.

                Note:
                The Environmental Protection Agency designates hazardous substances in 40 CFR Table 116.4A. The Coast Guard designates hazardous materials that are transported as bulk liquids by water in § 153.40.

              [CGD 81-101, 52 FR 7777, Mar. 12, 1987, as amended by CGD 95-028, 62 FR 51209, Sept. 30, 1997]

              § 151.03-31
              Headquarters.
              Commandant (CG-5P), Attn: Assistant Commandant for Prevention, U.S. Coast Guard Stop 7501, 2703 Martin Luther King Jr. Avenue SE., Washington, DC 20593-7501
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-070, 53 FR 34535, Sept. 7, 1988; USCG-2013-0671, 78 FR 60155, Sept. 30, 2013]

              § 151.03-33
              Lakes, bays, and sounds.
              A designation for all vessels navigating the waters of any of the lakes, bays, or sounds other than the waters of the Great Lakes.

              § 151.03-35
              Limiting draft.
              Maximum allowable draft to which a barge may be loaded. Limiting draft is a function of hull type and cargo specific gravity. A barge may be assigned different limiting drafts for different hull types or within one hull type for different specific gravities.

              § 151.03-36
              Liquid.
              In this part liquid includes liquefied and compressed gases.
              [CGD 81-101, 52 FR 7777, Mar. 12, 1987]

              § 151.03-37
              Maximum allowable working pressure.
              The maximum allowable working pressure shall be as defined in section VIII of the ASME Boiler and Pressure Vessel Code.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 85-061, 54 FR 50965, Dec. 11, 1989]

              § 151.03-38
              Nondestructive testing.
              Nondestructive testing includes ultrasonic examination, liquid penetrant examination, magnetic particle examination, radiographic examination, eddy current, and acoustic emission.
              [CGD 85-061, 54 FR 50965, Dec. 11, 1989]

              § 151.03-39
              Ocean.
              A designation for all vessels normally navigating the waters of any ocean or the Gulf of Mexico more than 20 nautical miles offshore.

              § 151.03-41
              Officer in Charge, Marine Inspection (OCMI).
              This term means any person from the civilian or military branch of the Coast Guard designated as such by the Commandant and who, under the superintendence and direction of the Coast Guard District Commander, is in charge of an inspection zone for the performance of duties with respect to the enforcement and administration of Subtitle II of Title 46, U.S. Code, Title 46 and Title 33 U.S. Code, and regulations issued under these statutes.
              [CGD 95-028, 62 FR 51209, Sept. 30, 1997]

              § 151.03-43
              Pressure.
              Terminology used in this part are: pounds per square inch gauge (p.s.i.g.) or pounds per square inch absolute (p.s.i.a.). 14.7 p.s.i.a. is equal to 0 p.s.i.g. P.s.i.g. is normally used in reference to design or operating requirements.

              § 151.03-45
              Rivers.
              A designation for all vessels whose navigation is restricted to rivers and/or canals, exclusively.

              § 151.03-47
              Service.
              The waters upon which a vessel may be operated as endorsed upon the certificate of inspection.

              § 151.03-49
              Sounding tube.
              This is an unperforated tube fitted to an ullage hole, secured so as to be vapor tight to the underside of the tank top open at the bottom, and extending to within 18 inches or less of the bottom of the tank.

              § 151.03-51
              Tank barge.
              A non-self-propelled vessel especially constructed or converted to carry bulk liquid cargo in tanks.

              § 151.03-53
              Tankerman.
              The following ratings are established in part 13 of this chapter. The terms for the ratings identify persons holding valid merchant mariner credentials or merchant mariners' documents for service in the ratings issued under that part:
              (a) Tankerman-PIC.
              (b) Tankerman-PIC (Barge).
              (c) Restricted Tankerman-PIC.
              (d) Restricted Tankerman-PIC (Barge).
              (e) Tankerman-Assistant.
              (f) Tankerman-Engineer.
              [CGD 79-116, 60 FR 17157, Apr. 4, 1995, as amended by USCG-2006-24371, 74 FR 11266, Mar. 16, 2009]

              §§ 151.03-55
              [Reserved]

            Subpart 151.04—Inspection and Certification

              § 151.04-1
              Certificate of inspection.
              (a) A certificate of inspection is required for every unmanned tank barge subject to the requirements in this subchapter. A certificate of inspection shall be issued to the barge or to its owners by the Officer in Charge, Marine Inspection, if the barge is found to comply with applicable inspection laws and the regulations in this chapter.
              (b) The certificate of inspection shall be endorsed with respect to the waters over which the barge may be operated.
              (c) The certificate shall be endorsed describing the cargoes by name as given in Table 151.05 or as specifically approved by the Commandant. No other dangerous cargo as defined in Subpart 151.01-1 shall be carried. Certificates shall specify maximum cargo weight (short tons), maximum density (pounds per gallon) and any operating limitations and a limiting draft.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-100, 54 FR 40029, Sept. 29, 1989]

              § 151.04-2
              Inspection required.
              (a) Every unmanned tank barge subject to the regulations in this subchapter shall be inspected every five years. More frequent inspections may be required, if necessary, by the Officer in Charge, Marine Inspection, to see that the hull, equipment and appliances of the vessel comply with the marine inspection laws, and the regulations of this subchapter and other subchapters where applicable.
              (b) [Reserved]
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by USCG-2007-29018, 72 FR 53967, Sept. 21, 2007]

              § 151.04-3
              Initial inspection.
              (a) The initial inspection which may consist of a series of inspections during the construction of an unmanned barge shall include a complete inspection of the structure, auxiliary machinery, and equipment. The inspection shall be such as to insure that the arrangement, materials, and scantlings of the hull structure, tanks and pressure vessels and their appurtenances comply with applicable regulations of this chapter and with the requirements of this part.
              (b) [Reserved]

              § 151.04-5
              Inspection for certification.
              (a) An inspection for certification is a prerequisite of the reissuance of a Certificate of Inspection as provided for in applicable regulations of this chapter.
              (b) Unless otherwise specified in table 151.05, cargo tanks are internally examined as follows:
              (1) Where the cargo tank is of the gravity type and the structural framing is on the internal tank surface, the tank shall be inspected internally at the time of inspection for certification.

              (2) Where the cargo tank is of the gravity type and the structural framing is on the external tank surface accessible for examination from voids, cofferdams, double bottoms, and other similar spaces, tanks shall be inspected internally at 4-year intervals.
              (3) If the tank is a pressure-vessel type cargo tank, an internal inspection of the tank is conducted within—
              (i) Ten years after the last internal inspection on an unmanned barge carrying cargo at temperatures of −67 °F (−55 °C) or warmer; or
              (ii) Eight years after the last internal inspection if the tank is a pressure type cargo tank carrying cargo at temperatures colder than −67 °F (−55 °C).
              (4) Internal inspection may be required at more frequent intervals as deemed necessary by the Officer in Charge, Marine Inspection.
              (c) An external examination of unlagged tanks and the visible parts of lagged tanks is made at each biennial inspection. If the vessel has single skin construction, the underwater portion of the tank need not be examined unless deemed necessary by the Officer in Charge, Marine Inspection. If an external examination of the tank is not possible because of insulation, the owner shall ensure that—
              (1) The amount of insulation deemed necessary by the marine inspector is removed during each cargo tank internal inspection to allow spot external examination of the tanks and insulation; or
              (2) The thickness of the tanks is gauged by a nondestructive means accepted by the marine inspector without the removal of insulation.
              (d) If required by the Officer in Charge, Marine Inspection the owner shall conduct nondestructive testing of each tank designated by the Officer in Charge, Marine Inspection in accordance with § 151.04-7.
              (e) If the Officer in Charge, Marine Inspection considers a hydrostatic test necessary to determine the condition of the tanks, the owner shall perform the test at a pressure of 11/2 times the tank's—
              (1) Maximum allowable pressure, as determined by the safety relief valve setting; or

              (2) Design pressure, when cargo tanks operate at maximum allowable pressures reduced below the design pressure in order to satisfy special mechanical stress relief requirements.

                Note:
                See the ASME Code, Section VIII, Appendix 3 for information on design pressure.

              (f) Quick closing valves shall be tested by operating the emergency shutoff system from each operating point at the time of each vessel's inspection for certification.
              (g) Excess flow valves shall be inspected at the time of inspection for certification. The Officer in Charge, Marine Inspection, shall satisfy himself that the valve is in working condition by visual inspection, and if this is impossible, by one of the following means:
              (1) Removing the valve and bench testing ashore; the valve shall close at or below its rated closing flow.
              (2) By any other means acceptable to the Officer in Charge, Marine Inspection, which will demonstrate that the valve is operable.
              (h) Pressure vacuum relief valves shall be examined to determine that the operating mechanism is free and capable of activation.
              (i) Safety relief valves shall be tested by bench testing or other suitable means. The valves shall relieve and reseat within the design tolerances of the set pressure, or it shall be removed and reset prior to being returned to service. This test shall be conducted at the time of the inspection for certification.
              (j) Cargo hose stored on board the vessel which is used in transferring cargoes listed in Table 151.05 shall be inspected every 2 years. This inspection shall consist of a visual examination and a hydrostatic test of 11/2 times the maximum pressure to which the hose will be subjected in service. The date of the most recent inspection and the test pressure shall be stenciled or otherwise marked on the hose.
              (k) Cargo piping shall be inspected and tested at the same time as the cargo tanks.

              (l) If the tank is a pressure vessel type cargo tank with an internal inspection interval of 10 years, and is 30 years old or older, determined from the date it was built, the owner shall conduct nondestructive testing of each tank in accordance with § 151.04-7, during each internal inspection.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-100, 54 FR 40029, Sept. 29, 1989; CGD 85-061, 54 FR 50965, Dec. 11, 1989; USCG-2014-0688, 79 FR 58284, Sept. 29, 2014]

              § 151.04-7
              Nondestructive testing.
              (a) Before nondestructive testing may be conducted to meet § 151.04-5 (d) and (l), the owner shall submit a proposal to the Officer in Charge, Marine Inspection that includes—
              (1) The test methods and procedures to be used all of which must meet section V of the ASME Boiler and Pressure Vessel Code (1986);
              (2) Each location on the tank to be tested; and
              (3) The test method and procedure to be conducted at each location on the tank.
              (b) If the Officer in Charge, Marine Inspection rejects the proposal, the Officer in Charge, Marine Inspection informs the owner of the reasons why the proposal is rejected.
              (c) If the Officer in Charge, Marine Inspection accepts the proposal, then the owner shall ensure that—
              (1) The proposal is followed; and
              (2) Nondestructive testing is performed by personnel meeting ASNT “Recommended Practice No. SNT-TC-1A (1988), Personnel Qualification and Certification in Nondestructive Testing.”
              (d) Within 30 days after completing the nondestructive test, the owner shall submit a written report of the results to the Officer in Charge, Marine Inspection.
              [CGD 85-061, 54 FR 50966, Dec. 11, 1989]

            Subpart 151.05—Summary of Minimum Requirements for Specific Cargoes

              § 151.05-1
              Explanation of column headings in Table 151.05.
              (a) Cargo identification/name. This column identifies cargoes by name. Words in italics are not part of the cargo name but may be used in addition to the cargo name. When one entry references another entry by use of the word “see” and both names are in roman type, either name may be used as the cargo name (e.g., “Diethyl either see Ethyl ether”). However, the referenced entry is preferred.
              (b) Cargo identification/pressure. This column identifies cargo in terms of pressure within the tank. Terms used are:
              (1) Pressurized. Cargo carried at a pressure in excess of 10 pounds per square inch gauge as measured at the top of the tank (i.e., exclusive of static head).
              (2) Atmospheric pressure. Cargo carried at not more than 10 pounds per square inch gauge, exclusive of static head.
              (c) Cargo identification/temperature. This column identifies the cargo by the temperature of the cargo during transit.
              (1) Ambient temperature. Cargo which is carried at naturally occurring temperatures.
              (2) Low temperature. Cargo carried below ambient temperatures when the product temperature is below 0 °F.
              (3) Elevated temperature. Cargo carried above ambient temperatures.
              (d) Hull type. This column refers to the flotation features of the barge. Terms used are explained and defined in Subpart 151.10 of this part.
              (e) Cargo segregation/tanks. This column refers to the separation of the cargo from its surroundings. Terms are explained in § 151.13-5 and in footnotes to Table 151.05 of this part.
              (f) Tanks/type. This column refers to the design requirements for cargo tanks and their placement within the hull of the vessel. Terms are explained in § 151.15-1.
              (g) Tanks/venting. This column refers to arrangements for preventing excess pressure or vacuum within the cargo tank. Terms used are explained and defined in § 151.15-5.
              (h) Tanks/gauging devices. This column refers to arrangements provided for determining the amount of cargo present in cargo tanks. Terms used are explained and defined in § 151.15-10.
              (i) Cargo transfer/piping. This column refers to the classification of piping in accordance with Subchapter F of this chapter as discussed in § 151.20-1.
              (j) Cargo transfer/control. This column refers to the valving requirements for the cargo piping system. These requirements are defined in § 151.20-5.

              (k) Environmental control/cargo tanks. This column refers to control of the composition of the environment within cargo tanks. Definitions and detailed requirements are given in § 151.25-1.
              (l) Environmental control/cargo handling space. This column refers to control of the environment in the cargo handling spaces. Definitions and detailed requirements are found in § 151.25-2.
              (m) Fire protection. This column specifies whether portable fire extinguishers are required on barges carrying the cargo named. Requirements for cargoes requiring extinguishers are given in Subpart 151.30 of this part.
              (n) Special requirements. This column refers to requirements in subparts 151.40, 151.50, 151.55, 151.56, and 151.58 of this part which apply to specific cargoes. The section numbers listed omit the preceding part designation, “151”.
              (o) Electrical hazard class—group. This column lists the electrical hazard class and group used for the cargo when determining requirements for electrical equipment under subchapter J (Electrical engineering) of this chapter.
              (p) Temperature control installations. This column refers to systems which are used to control the temperature of the cargo. Definitions and requirements which are applicable if such systems are used are given in Subpart 151.40 of this part.
              (q) Tank inspection period. This column refers to the maximum period in years between internal cargo tank inspections. Applicable requirements are given in § 151.04-5.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970; 35 FR 6431, Apr. 22, 1970, as amended by CGD 74-275, 40 FR 21958, May 20, 1975; CGD 88-100, 54 FR 40029, Sept. 29, 19895; CGD 96-041, 61 FR 50731, Sept. 27, 1996; USCG-2000-7079, 65 FR 67183, Nov. 8, 2000]

              § 151.05-2
              Compliance with requirements for tank barges carrying benzene and benzene containing cargoes, or butyl acrylate cargoes.
              A tank barge certificated to carry benzene and benzene containing cargoes or butyl acrylate cargoes must comply with the gauging requirement of Table 151.05 of this part by August 15, 1998. Until that date, a tank barge certificated to carry benzene and benzene containing cargoes must meet either the gauging requirement of Table 151.05 or the restricted or closed gauging requirements in effect on September 29, 1994; and a tank barge certificated to carry butyl acrylate cargoes must meet either the gauging requirements of Table 151.05 or comply with the open, restricted, or closed gauging requirements in effect on September 29, 1994.
              [CGD 95-900, 60 FR 34050, June 29, 1995]

              Pt. 151, Subpt. 151.05, Table 151.05
              Table 151.05 to Subpart 151.05 of Part 151—Summary of Minimum Requirements

                  Cargo identification1

                  Cargo name
                  Pressure
                  Temp.
                  Hulltype

                  Cargo segre-gation
                    tank

                  Tanks
                  Type
                  Vent
                  Gauging device
                  Cargo transfer
                  Piping class
                  Control
                  Environmentalcontrol

                  Cargo tanks
                  Cargo handling space
                  Fireprotection required

                  Special requirements in 46 CFR Part 151
                  Electrical hazard class and group
                  Temp. control install.
                  Tank internal inspect. period—years

                  a.
                  b.
                  c.
                  d.
                  e.
                  f.
                  g.
                  h.
                  i.
                  j.
                  k.
                  l.
                  m.
                  n.
                  o.
                  p.
                  q.

                  Acetaldehyde
                  Press.
                  Amb.
                  II
                   1NA 2 i i

                  Ind. Pressure
                  SR
                  Restr.
                  II
                  P-1
                  Inert
                  Vent F
                  Yes
                  .55-1(h)
                  I-C
                  NA
                  G

                  Acetic acid
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .50-73.55-1(g)

                  I-D
                  NA
                  G

                  Acetic anhydride
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-73.55-1(g)

                  I-D
                  NA
                  G

                  Acetone cyanohydrin
                  Atmos.
                  Amb.
                  I
                   1 i i 2 i

                  Integral Gravity
                  PV
                  Closed
                  I
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-5.50-70(b)
                    .50-73
                    .50-81

                  I-D
                  NA
                  G

                  Acetonitrile
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  No
                  I-D
                  NA
                  G

                  Acrylic acid
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-70(a).50-73
                    .50-81
                    .58-1(a)

                  I-D
                  NA
                  G

                  Acrylonitrile
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Closed
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .55-1(e).50-70(a)

                  I-D
                  NA
                  G

                  Adiponitrile
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i

                  Integral Gravity
                  PV
                  Open
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  No
                  I-D
                  NA
                  G

                  Alkylbenzenesulfonic acid (greater than 4%)
                  Atmos.
                  Elev.
                  III
                   1 i i 2 i i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .50-73.58-1(e)

                  I-B
                  NA
                  G

                  Alkyl(C7-C9) nitrates
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .50-81.50-86

                  NA
                  NA
                  G

                  Allyl alcohol
                  Atmos.
                  Amb.
                  I
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Closed
                  I
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-5.50-73

                  I-C
                  NA
                  G

                  Allyl chloride
                  Atmos.
                  Amb.
                  I
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Closed
                  I
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-5
                  I-D
                  NA
                  G

                  Aluminum sulfate solution
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .58-1(e)
                  NA
                  NA
                  G

                  Aminoethylethanolamine
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .55-1(b)
                  NA
                  NA
                  G

                  Ammonia, anhydrous
                  Press.
                  Amb.
                  II
                   1NA 2 i i

                  Ind. Pressure
                  SR250p.s.i.

                  Restr.
                  II
                  P-2
                  NR
                  Vent F
                  No
                  .50-30.50-32

                  I-D
                  NA
                  G

                  Ammonia, anhydrous
                  Atmos.
                  Low
                  II
                   1NA 2 i i

                  Ind. Gravity
                  PV
                  Restr.
                  II-L
                  G-2
                  NR
                  Vent F
                  No
                  .50-30.50-32

                  I-D
                  .40-1(b)(1)

                  8

                  Ammonium bisulfite solution (70% or less)
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  No
                  .50-73.56-1(a), (b), (c)

                  NA
                  NA
                  G

                  Ammonium hydroxide (28% or less NH 3)
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  No
                  .56-1(a), (b), (c), (f), (g)
                  I-D
                  NA
                  G

                  Aniline
                  Atmos.
                  Amb.
                  I
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Closed
                  I
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-5.50-73

                  I-D
                  NA
                  G

                  Anthracene oil (Coal tar fraction)
                  Atmos.
                  Amb.Elev.

                  II
                   1 i i 2 i i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  No
                  I-D
                  NA
                  G

                  Argon, liquefied

                  Press.
                  Low
                  III
                   1NA 2 i

                  Ind. Pressure
                  SR
                  Restr.
                  II-L
                  P-1
                  NR
                  Vent F
                  No
                  .40-1(a).50-30
                    .50-36

                  NA
                  .40-1(a)
                  G

                  Benzene
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Closed
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-60
                  I-D
                  NA
                  G

                  Benzene hydrocarbon mixtures (containing Acetylenes) (having 10% Benzene or more)
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Closed
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-60.56-1(b), (d), (f), (g),

                  I-D
                  NA
                  G

                  Benzene hydrocarbon mixtures (having 10% Benzene or more)
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Closed
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-60
                  I-D
                  NA
                  G

                  Benzene, Toluene, Xylene mixtures (having 10% Benzene or more)
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Closed
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-60
                  I-D
                  NA
                  G

                  Butadiene
                  Press.
                  Amb.
                  II
                   1NA 2 i i

                  Ind. Pressure
                  SR
                  Restr.
                  II
                  P-2
                  NR
                  Vent F
                  Yes
                  .50-70(a).50-73

                  I-B
                  NA
                  G

                  Butadiene, Butylene mixtures (containing Acetylenes)
                  Press.
                  Amb.
                  II
                   1NA 2 i i

                  Ind. Pressure
                  SR
                  Restr.
                  II
                  P-1
                  NR
                  Vent F
                  Yes
                  .50-30.50-70(a)
                    .50-73
                    .56-1(b), (d), (f), (g)

                  I-B
                  NA
                  G

                  Butyl acrylate (all isomers)
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-70(a).50-81(a), (b)

                  I-D
                  NA
                  G

                  Butylamine (all isomers)
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i i

                  Ind. Gravity
                  PV
                  Closed
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .55-1(c)
                  I-D
                  NA
                  G

                  Butyl methacrylate
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-70(a).50-81(a), (b)

                  I-D
                  NA
                  G

                  Butyraldehyde (all isomers)
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Open
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .55-1(h)
                  I-C
                  NA
                  G

                  Camphor oil (light)
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  No
                  I-D
                  NA
                  G

                  Carbolic oil
                  Atmos.
                  Amb.
                  I
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Closed
                  I
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-5.50-73

                  NA
                  NA
                  G

                  Carbon dioxide, liquefied

                  Press.
                  Low
                  III
                   1NA 2 i

                  Ind. Pressure
                  SR
                  Restr.
                  I-L
                  P-1
                  NR
                  Vent F
                  No
                  .50-30
                  NA
                  .40-1(b)(1)
                  G

                  Carbon disulfide
                  Atmos.
                  Amb.
                  II
                   1NA 2 i i

                  Ind. Gravity
                  PV
                  Restr.
                  II
                  G-1
                  Inert
                  Vent F
                  Yes
                  .50-40.50-41

                  I-A
                  NA
                  G

                  Carbon tetrachloride
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  PV
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  No
                  No
                  NA
                  NA
                  G

                  Cashew nut shell oil (untreated)
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-2
                  NR
                  Vent N
                  Yes
                  .50-73
                  NA
                  NA
                  G

                  Caustic potash solution
                  Atmos.
                  Amb.Elev.

                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  NR
                  No
                  .50-73.55-1(j)

                  NA
                  NA
                  G

                  Caustic soda solution
                  Atmos.
                  Amb.Elev.

                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  NR
                  No
                  .50-73.55-1(j)

                  NA
                  NA
                  G

                  Chlorine
                  Press.
                  Amb.
                  I
                   1NA 2 i i

                  Ind. Pressure
                  SR300p.s.i.

                  Indirect
                  I
                  P-2
                  NR
                  Vent F
                  No
                  .50-30.50-31

                  NA
                  NA
                  3

                  Chlorobenzene
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  No
                  I-D
                  NA
                  G

                  Chloroform
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent F
                  No
                  No
                  NA
                  NA
                  G

                  Chlorohydrins (crude)
                  Atmos.
                  Amb.
                  I
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Closed
                  I
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-5
                  I-D
                  NA
                  G

                  o-Chloronitrobenzene
                  Atmos.
                  Amb.
                  I
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Closed
                  I
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-5.50-73

                  NA
                  NA
                  G

                  Chlorosulfonic acid
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  No
                  .50-20.50-21
                    .50-73

                  I-B
                  NA
                  G

                  Coal tar naphtha solvent
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-73
                  I-D
                  NA
                  G

                  Coal tar pitch (molten)
                  Atmos.
                  Elev.
                  III
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-73
                  I-D
                  NA
                  G

                  Creosote
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  No
                  NA
                  NA
                  G

                  Cresols (all isomers)
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  No
                  NA
                  NA
                  G

                    Cresols with less than 5% Phenol, see Cresols (all isomers)

                    Cresols with 5% or more Phenol, see Phenol

                  Cresylate spent caustic
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  No
                  .50-73.55-1(b)

                  NA
                  NA
                  G

                  Cresylic acid, sodium salt solution, see Cresylate spent caustic

                  Crotonaldehyde
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .55-1(h)
                  I-C
                  NA
                  G

                  Cyclohexanone
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .56-1(a), (b)
                  I-D
                  NA
                  G

                  Cyclohexanone, Cyclohexanol mixture
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .56-1(b)
                  I-D
                  NA
                  G

                  Cyclohexylamine
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .56-1(a), (b), (c), (g)
                  I-D
                  NA
                  G

                  Cyclopentadiene, Styrene, Benzene mixture
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-60.56-1(b)

                  I-D
                  NA
                  G

                  iso-Decyl acrylate
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .50-70(a).50-81(a), (b)
                    .55-1(c)

                  NA
                  NA
                  G

                  Dichlorobenzene (all isomers)
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .56-1(a), (b)
                  I-D
                  NA
                  G

                  Dichlorodifluoromethane
                  Press.
                  Amb.
                  III
                   1NA 2 i

                  Ind. Pressure
                  SR
                  Restr.
                  II
                  P-1
                  NR
                  NR
                  No
                  No
                  NA
                  NA
                  G

                  1,1-Dichloroethane
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  No
                  I-D
                  NA
                  G

                  2,2′-Dichloroethyl ether
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .55-1(f)
                  I-C
                  NA
                  G

                  Dichloromethane
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  No
                  No
                  I-D
                  NA
                  G

                  2,4-Dichlorophenoxy acetic acid, diethanolamine salt solution
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  No
                  .56-1(a), (b), (c), (g)
                  NA
                  NA
                  G

                  2,4-Dichlorophenoxyacetic acid, dimethylamine salt solution
                  Atmos.
                  Amb.Elev.

                  III
                   1 i 2 i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  No
                  .56-1(a), (b), (c), (g)
                  NA
                  NA
                  G

                  2,4-Dichlorophenoxyacetic acid, triisopropanolamine salt solution
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  No
                  .56-1(a), (b), (c), (g)
                  NA
                  NA
                  G

                  1,1-Dichloropropane
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  No
                  I-D
                  NA
                  G

                  1,2-Dichloropropane
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  No
                  I-D
                  NA
                  G

                  1,3-Dichloropropane
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  No
                  I-D
                  NA
                  G

                  1,3-Dichloropropene
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  No
                  I-D
                  NA
                  G

                  Dichloropropene, Dichloropropane mixtures
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Closed
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  No
                  I-D
                  NA
                  G

                  2,2-Dichloropropionic acid
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  Dry
                  Vent F
                  Yes
                  .50-73.58-1(e)

                  NA
                  NA
                  G

                  Diethanolamine
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .55-1(c)
                  NA
                  NA
                  G

                  Diethylamine
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .55-1(c)
                  I-C
                  NA
                  G

                  Diethylenetriamine
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .55-1(c)
                  NA
                  NA
                  G

                  Diethyl ether, see Ethyl ether

                  Diisobutylamine
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .55-1(c)
                  I-C
                  NA
                  G

                  Diisopropanolamine
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .55-1(c)
                  NA
                  NA
                  G

                  Diisopropylamine
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Closed
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .55-1(c)
                  I-C
                  NA
                  G

                  N,N-Dimethylacetamide
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .56-1(b)
                  I-D
                  NA
                  G

                  Dimethylamine
                  Press.
                  Amb.
                  II
                   1NA 2 i i

                  Ind. Pressure
                  SR
                  Restr.
                  II
                  P-2
                  NR
                  Vent F
                  Yes
                  .55-1(c)
                  I-C
                  NA
                  G

                  Dimethylethanolamine
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .56-1(b), (c)
                  I-C
                  NA
                  G

                  Dimethylformamide
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .55-1(e)
                  I-D
                  NA
                  G

                  1,4-Dioxane
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Closed
                  II
                  G-1
                  Inert
                  Vent F
                  Yes
                  No
                  I-C
                  NA
                  G

                  Diphenylmethane diisocyanate
                  Atmos.
                  Elev.
                  II
                   1 i i 2 i

                  Integral Gravity
                  PV
                  Closed
                  I
                  G-1
                  InertDry

                  Vent F
                  Yes
                  .50-5.56-1(a), (b)

                  NA
                  Yes
                  G

                  Di-n-propylamine
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .55-1(c)
                  I-C
                  NA
                  G

                  Dodecyl- dimethyl- amine, Tetradecyldimethylamine mixture
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .56-1(b)
                  NA
                  NA
                  G

                  Dodecyl phenol
                  Atmos.
                  Amb.
                  I
                   1 i i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .50-73
                  I-D
                  NA
                  2

                  Epichlorohydrin
                  Atmos.
                  Amb.
                  I
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Closed
                  I
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-5
                  I-C
                  NA
                  G

                  Ethanolamine
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .55-1(c)
                  I-D
                  NA
                  G

                  Ethyl acrylate
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-70(a).50-81(a), (b)

                  I-D
                  NA
                  G

                  Ethylamine solution (72% or less)
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Closed
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .55-1(b)
                  I-D
                  NA
                  G

                  N-Ethylbutylamine
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .55-1(b)
                  I-C
                  NA
                  G

                  Ethyl chloride
                  Press.
                  Amb.
                  II
                   1NA 2 i i

                  Ind. Pressure
                  SR
                  Restr.
                  II
                  P-2
                  NR
                  Vent F
                  Yes
                  No
                  I-D
                  NA
                  8

                  N-Ethylcyclohexylamine
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .55-1(b)
                  I-C
                  NA
                  G

                  Ethylene chlorohydrin
                  Atmos.
                  Amb.
                  I
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Closed
                  I
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-5.50-73

                  I-D
                  NA
                  G

                  Ethylene cyanohydrin
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  No
                  NA
                  NA
                  G

                  Ethylenediamine
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .55-1(c)
                  I-D
                  NA
                  G

                  Ethylene dibromide
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i

                  Integral Gravity
                  PV
                  Closed
                  II
                  G-1
                  NR
                  Vent F
                  No
                  No
                  NA
                  NA
                  G

                  Ethylene dichloride
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  No
                  I-D
                  NA
                  G

                  Ethylene glycol monoalkyl ethers
                      Including:

                      2-Ethoxyethanol

                      Ethylene glycol butyl ether

                      Ethylene glycol tert-butyl ether

                      Ethylene glycol ethyl ether

                      Ethylene glycol methyl ether

                      Ethylene glycol n-propyl ether

                      Ethylene glycol isopropyl ether

                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  No
                  I-C
                  NA
                  G

                  Ethylene glycol hexyl ether
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  No
                  NA
                  NA
                  G

                  Ethylene glycol propyl ether
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  No
                  NA
                  NA
                  G

                  Ethylene oxide
                  Press.
                  Amb.
                  I
                   1NA 2 i i

                  Ind. Pressure
                  SR
                  Restr.
                  II
                  P-2
                  Inert
                  Vent F
                  Yes
                  .50-10.50-12

                  I-B
                  .40-1(c)
                  4

                  Ethyl ether
                  Atmos.
                  Amb.
                  II
                   1NA 2 i i

                  Ind. Gravity
                  PV
                  Closed
                  II
                  G-1
                  Inert
                  Vent F
                  Yes
                  .50-40.50-42

                  I-C
                  NA
                  G

                  2-Ethylhexyl acrylate
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .50-70(a).50-81(a), (b)

                  I-D
                  NA
                  G

                  Ethylidene norbornene
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Closed
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-5.50-74

                  NA
                  NA
                  G

                  Ethyl methacrylate
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-70(a)
                  I-D
                  NA
                  G

                  2-Ethyl-3-propylacrolein
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  No
                  I-C
                  NA
                  G

                  Ferric chloride solutions
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  No
                  .50-20.50-75

                  I-B
                  NA
                  G

                  Fluorosilicic acid (30% or less)
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i i

                  Ind. Gravity
                  PV
                  Closed
                  II
                  G-1
                  NR
                  Vent F
                  No
                  .50-20.50-22
                    .50-73
                    .50-77

                  I-B
                  NA
                  4

                  Formaldehyde solution (37% to 50%)
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  No
                  .55-1(h)
                  I-B
                  NA
                  G

                  Formic acid
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-73.55-1(i)

                  I-D
                  NA
                  G

                  Furfural
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .55-1(h)
                  I-C
                  NA
                  G

                  Glutaraldehyde solution (50% or less)
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  No
                  No
                  NA
                  NA
                  G

                  Glyoxylic acid solution (50% or less)
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .50-73.50-81
                    .58-1(e)

                  NA
                  NA
                  G

                  Hexamethylenediamine solution
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .55-1(c)
                  I-D
                  NA
                  G

                  Hexamethyleneimine
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .56-1(b), (c)
                  I-C
                  NA
                  G

                  Hydrochloric acid
                  Atmos.
                  Amb.
                  III
                   1NA 2 i i

                  Ind. Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent F
                  No
                  .50-20.50-22
                    .50-73

                  I-B
                  NA
                  4

                    Hydrofluorosilicic acid (25% or less), see Fluorosilicic acid (30% or less)

                  2-Hydroxyethyl acrylate
                  Atmos.
                  Amb.
                  I
                   1 i i 2 i

                  Integral Gravity
                  PV
                  Closed
                  I
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-5.50-70(a)
                    .50-73
                    .50-81(a), (b)

                  NA
                  NA
                  G

                  Isoprene
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Open
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-70(a).50-81(a), (b)

                  I-D
                  NA
                  G

                  Kraft pulping liquors (free alkali content 3% or more) (including: Black, Green, or White liquor)
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  NR
                  No
                  .50-73.56-1(a), (c), (g)

                  NA
                  NA
                  G

                  Mesityl oxide
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  No
                  I-D
                  NA
                  G

                  Methylacetylene, Propadiene mixture
                  Press.
                  Amb.
                  III
                   1 NA 2 i i

                  Ind. Pressure
                  SR
                  Restr.
                  II
                  P-2
                  NR
                  Vent F
                  Yes
                  .50-79
                  I-C
                  NA
                  G

                  Methyl acrylate
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-70(a).50-81(a), (b)

                  I-D
                  NA
                  G

                  Methylamine solution (42% or less)
                  Atmos.
                  Amb.
                  II
                   1NA 2 i i

                  Ind. Gravity
                  PV
                  Closed
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .56-1(a), (b), (c), (g)
                  I-D
                  NA
                  G

                  Methyl bromide
                  Press.
                  Amb.
                  I
                   1NA 2 i i

                  Ind. Pressure
                  SR
                  Closed
                  I
                  P-2
                  NR
                  Vent F
                  Yes
                  .50-5
                  I-D
                  NA
                  2

                  Methyl chloride
                  Press.
                  Amb.
                  II
                   1NA 2 i i

                  Ind. Pressure
                  SR
                  Restr.
                  II
                  P-2
                  NR
                  Vent F
                  Yes
                  .55-1(c)
                  I-D
                  NA
                  8

                  Methylcyclopentadiene dimer
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  No
                  I-B
                  NA
                  G

                  Methyl diethanolamine
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .56-1(b), (c)
                  I-C
                  NA
                  G

                  2-Methyl-5-ethylpyridine
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .55-1(e)
                  I-D
                  NA
                  G

                  Methyl methacrylate
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-70(a).50-81(a), (b)

                  I-D
                  NA
                  G

                  2-Methylpyridine
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .55-1(c)
                  I-D
                  NA
                  G

                  alpha-Methylstyrene
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-70(a).50-81(a), (b)

                  I-D
                  NA
                  G

                  Monochloro- difluoromethane
                  Press.
                  Amb.
                  III
                   1NA 2 i

                  Ind. Pressure
                  SR
                  Restr.
                  I
                  P-1
                  NR
                  NR
                  No
                  No
                  NA
                  NA
                  G

                  Morpholine
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .55-1(c)
                  I-C
                  NA
                  G

                  Motor fuel anti-knock compounds (containing lead alkyls)
                  Atmos.
                  Amb.
                  I
                   1 i i 2 i i

                  Ind. Gravity
                  PV
                  Closed
                  I
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-6.50-73

                  I-D
                  NA
                  .50-6

                  Nitric acid (70% or less)
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  No
                  .50-20.50-73
                    .50-80

                  I-B
                  NA
                  4

                  Nitrobenzene
                  Atmos.
                  Amb.
                  I
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Closed
                  I
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-5.50-73

                  I-D
                  NA
                  G

                  Nitrogen, liquefied

                  Press.
                  Low
                  III
                   1NA 2 i

                  Ind. Pressure
                  SR
                  Restr.
                  II-L
                  P-1
                  NR
                  Vent F
                  No
                  .40-1(a).50-30
                    .50-36

                  NA
                  .40-1(a)
                  G

                  1- or 2-Nitropropane
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-81
                  I-C
                  NA
                  G

                  o-Nitrotoluene
                  Atmos.
                  Amb.
                  I
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Closed
                  I
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-5.50-73

                  I-D
                  NA
                  G

                    Octyl nitrates (all isomers), see Alkyl(C7-C9) nitrates

                  Oleum
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  No
                  .50-20.50-21
                    .50-73

                  I-B
                  NA
                  4

                  Pentachloroethane
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  No
                  No
                  NA
                  NA
                  G

                  1,3-Pentadiene
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-70(a).50-81

                  I-D
                  NA
                  G

                  Perchloroethylene
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  No
                  No
                  NA
                  NA
                  G

                  Phenol
                  Atmos.
                  Amb.
                  I
                   1 i i 2 i

                  Integral Gravity
                  PV
                  Closed
                  I
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-5.50-73

                  I-D
                  NA
                  2

                  Phosphoric acid
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  No
                  .50-20.50-23
                    .50-73

                  I-B
                  NA
                  4

                  Phosphorus, white (elemental)
                  Atmos.
                  Elev.
                  I
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Closed
                  I
                  G-1
                  WaterPad

                  Vent F
                  Yes
                  .50-50
                  NA
                  NA
                  4-8

                  Phthalic anhydride (molten)
                  Atmos.
                  Elev.
                  III
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  No
                  I-D
                  NA
                  G

                  Polyethylene polyamines
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .55-1(e)
                  NA
                  NA
                  G

                  Polymethylene polyphenyl isocyanate
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i

                  Integral Gravity
                  PV
                  Closed
                  II
                  G-1
                  Dry
                  Vent F
                  Yes
                  .55-1(e)
                  NA
                  NA
                  G

                  Potassium hydroxide solution, see Caustic potash solution

                  iso-Propanolamine
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .55-1(c)
                  I-D
                  NA
                  G

                  Propanolamine (iso-, n-)
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .56-1(b), (c)
                  I-D
                  NA
                  G

                  Propionic acid
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .50-73.55-1(g)

                  I-D
                  NA
                  G

                  iso-Propylamine
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Closed
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .55-1(c)
                  I-D
                  NA
                  G

                  Propylene oxide
                  Press.
                  Amb.
                  II
                   1NA 2 i i

                  Ind. Pressure
                  SR
                  Restr.
                  II
                  P-1
                  Inert
                  Vent F
                  Yes
                  .50-10.50-13

                  I-B
                  NA
                  G

                  iso-Propyl ether
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  Inert
                  Vent F
                  Yes
                  .50-70(a)
                  I-D
                  NA
                  G

                  Pyridine
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .55-1(e)
                  I-D
                  NA
                  G

                  Sodium aluminate solution (45% or less)
                  Atmos.
                  Amb.Elev.

                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  NR
                  No
                  .50-73.56-1(a), (b), (c)

                  NA
                  NA
                  G

                  Sodium chlorate solution (50% or less)
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  No
                  .50-73
                  NA
                  NA
                  G

                  Sodium dichromate solution (70% or less)
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i i

                  Integral Gravity
                  Open
                  Closed
                  II
                  G-1
                  NR
                  Vent N
                  No
                  .50-5(d).50-73
                    .56-1(b), (c)

                  NA
                  NA
                  G

                  Sodium hydroxide solution, see Caustic soda solution

                  Sodium hypochlorite solution (20% or less)
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  No
                  .50-73.56-1(a), (b)

                  NA
                  NA
                  G

                  Sodium sulfide, hydrosulfide solutions (H2S 15ppm or less)
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  No
                  .50-73.55-1(b)

                  NA
                  NA
                  G

                  Sodium sulfide, hydrosulfide solutions (H2S greater than 15ppm but less than 200ppm)
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  No
                  .50-73.55-1(b)

                  NA
                  NA
                  G

                  Sodium sulfide, hydrosulfide solutions (H2S greater than 200ppm)
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i

                  Integral Gravity
                  PV
                  Closed
                  II
                  G-1
                  NR
                  Vent F
                  No
                  .50-73.55-1(b)

                  NA
                  NA
                  G

                  Sodium thiocyanate solution (56% or less)
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .58-1(a)
                  NA
                  NA
                  G

                  Styrene monomer

                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .50-70(a).50-81(a), (b)

                  I-D
                  NA
                  G

                  Sulfur (molten)
                  Atmos.
                  Elev.
                  III
                   1 i 2 i i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  Vent N
                  Vent N
                  Yes
                  .50-55
                  I-C
                  .40-1(f)(1)

                  G

                  Sulfur dioxide
                  Press.
                  Amb.
                  I
                   1NA 2 i i

                  Ind. Pressure
                  SR
                  Closed

                  P-2
                  NR
                  Vent F
                  No
                  .50-30.50-84
                    .55-1(j)

                  NA
                  NA
                  2

                  Sulfuric acid
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  No
                  .50-20.50-21
                    .50-73

                  I-B
                  NA
                  4

                  Sulfuric acid, spent
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  No
                  .50-20.50-21
                    .50-73

                  I-B
                  NA
                  4

                  1,1,2,2-Tetrachloroethane
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  No
                  No
                  NA
                  NA
                  G

                  Tetraethylenepentamine
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .55-1(c)
                  I-C
                  NA
                  G

                  Tetrahydrofuran
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-70(b)
                  I-C
                  NA
                  G

                  Toluenediamine
                  Atmos.
                  Elev.
                  II
                   1 i i 2 i

                  Integral Gravity
                  PV
                  Closed
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-73.56-1(a), (b), (c), (g)

                  NA
                  NA
                  G

                  Toluene diisocyanate
                  Atmos.
                  Amb.
                  I
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Closed
                  I
                  G-1
                  DryN 2

                  Vent F
                  Yes
                  .50-5.55-1(e)

                  I-D
                  NA
                  G

                  o-Toluidine
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Closed
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-5.50-73

                  I-D
                  NA
                  G

                  1,2,4-Trichlorobenzene
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  No
                  I-D
                  NA
                  G

                  1,1,2-Trichloroethane
                  Atmos.
                  Amb.
                  III
                   1 i i 2 i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  No
                  .50-73.56-1(a)

                  I-D
                  NA
                  G

                  Trichloroethylene
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  No
                  No
                  I-D
                  NA
                  G

                  1,2,3-Trichloropropane
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-73.56-1(a)

                  I-D
                  NA
                  G

                  Triethanolamine
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .55-1(b)
                  I-C
                  NA
                  G

                  Triethylamine
                  Atmos.
                  Amb.
                  II
                   1 i i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .55-1(e)
                  I-C
                  NA
                  G

                  Triethylenetetramine
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  Vent N
                  Yes
                  .55-1(b)
                  I-C
                  NA
                  G

                  Triphenylborane (10% or less), Caustic soda solution
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  NR
                  No
                  .56-1(a), (b), (c)
                  NA
                  NA
                  G

                  Trisodium phosphate solution
                  Atmos.
                  Amb.Elev.

                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  NR
                  No
                  .50-73.56-1(a), (c)

                  NA
                  NA
                  G

                  Urea, Ammonium nitrate solution (containing more than 2% NH 3)
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  No
                  .56-1(b)
                  I-D
                  NA
                  G

                  Valeraldehyde (all isomers)
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  Inert
                  Vent F
                  Yes
                  No
                  I-C
                  NA
                  G

                  Vanillan black liquor (free alkali content 3% or more)
                  Atmos.
                  Amb.
                  III
                   1 i 2 i

                  Integral Gravity
                  Open
                  Open
                  II
                  G-1
                  NR
                  NR
                  No
                  .50-73.56-1(a), (c), (g)

                  NA
                  NA
                  G

                  Vinyl acetate
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Open
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-70(a).50-81(a), (b)

                  I-D
                  NA
                  G

                  Vinyl chloride
                  Press.
                  Amb.
                  II
                   1NA 2 i i

                  Ind. Pressure
                  SR
                  Closed
                  II
                  P-2
                  NR
                  Vent F
                  Yes
                  .50-30.50-34

                  I-D
                  NA
                  8

                  Vinyl chloride
                  Atmos.
                  Low
                  II
                   1NA 2 i i

                  Ind. Gravity
                  PV
                  Closed
                  II-L
                  G-2
                  NR
                  Vent F
                  Yes
                  .50-30.50-34

                  I-D
                  .40-1(b)(1)

                  8

                  Vinylidene chloride
                  Atmos.
                  Amb.
                  II
                   1NA 2 i i

                  Ind. Gravity
                  PV
                  Closed
                  II
                  P-2
                  Padded
                  Vent F
                  Yes
                  .55-1(f).50-70(a)
                    .50-81(a), (b)

                  I-D
                  NA
                  G

                  Vinyltoluene
                  Atmos.
                  Amb.
                  III
                   1 i 2 i i

                  Integral Gravity
                  PV
                  Restr.
                  II
                  G-1
                  NR
                  Vent F
                  Yes
                  .50-70(a).50-81
                    .56-1(a), (b), (c), (g)

                  I-D
                  NA
                  G

                  For requirements see these sections in Part 151:

                  .10-1
                  .13- 5
                  .15- 1
                  .15-5
                  .15- 10
                  .20- 1
                  .20- 5
                  .25-1
                  .25-2
                  .30

                   111.105 (Sub-chapter J)
                  .40
                  .04- 5

                See Table 2 of Part 153 for additional cargoes permitted to be carried by tankbarge.
                Terms and symbols:
                Segregation—Tank—
                 Line 1—Segregation of cargo from surrounding waters:
                  i = Skin of vessel (single skin) only required. Cargo tank wall can be vessel's hull.
                   i i = Double skin required. Cargo tank wall cannot be vessel's hull.
                 Line 2—Segregation of cargo space from machinery spaces and other spaces which have or could have a source of ignition:
                  i = Single bulkhead only required. Tank wall can be sole separating medium.
                   i i = Double bulkhead required. Cofferdam, empty tank, pumproom, tank with Grade E Liquid (if compatible with cargo) is satisfactory.
                Internal tank inspection—
                 G—Indicates cargo is subject to general provisions of 151.04-5(b).
                 Specific numbers in this column are changes from the general provisions.
                Abbreviations used:
                Tank type: Ind = Independent.
                Vent:
                 PV = Pressure vacuum valve.
                 SR = Safety relief.
                Gauging device: Restr. = Restricted.
                General usage:
                 NR = No requirement.
                 NA = Not applicable.
                1. The provisions contained in 46 CFR Part 197, subpart C, apply to liquid cargoes containing 0.5% or more benzene by volume.

              [USCG-2000-7079, 65 FR 67183, Nov. 8, 2000]

            Subpart 151.10—Barge Hull Construction Requirements

              § 151.10-1
              Barge hull classifications.
              (a) Each barge constructed or converted in conformance with this subpart shall be assigned a hull type number.
              (1) Effective dates for certain requirements:
              (i) Barges constructed or converted between July 1, 1964, and June 1, 1970, in accordance with the construction requirements of §§ 32.63 and 98.03 of this chapter are considered to comply with the basic provisions of this subpart and will retain the hull type classification for the service for which they were originally approved. Changes in product endorsement will not be considered a change in service, except when a change to a product of higher specific gravity necessitates a reevaluation of the intact and damage stability requirements in subpart E of part 172 of this chapter.
              (2) [Reserved]
              (b) For this purpose the barge hull types shall be defined as follows:
              (1) Type I barge hull. Barge hulls classed as Type I are those designed to carry products which require the maximum preventive measures to preclude the uncontrolled release of the cargo. These barges are required to meet:
              (i) Standards of intact stability and a modified two compartment standard of subdivision and damage stability, as specified in subpart E of part 172 of this chapter; and
              (ii) Hull structural requirements, including an assumed grounding condition.
              (2) Type I-S (special) barge hulls. Type I-S (special) barge hulls are those constructed or converted for the carriage of chlorine in bulk prior to July 1, 1964, and modified to higher stability standards prior to July 1, 1968, but not meeting the requirements for full Type I classification.
              (3) Type II barge hull. Barge hulls classed as Type II are those designed to carry products which require significant preventive measures to preclude the uncontrolled release of the cargo. These barges are required to meet:
              (i) Standards of intact stability and a modified one compartment standard of subdivision and damage stability, as specified in subpart E of part 172 of this chapter; and
              (ii) Hull structural requirements, including an assumed grounding condition.
              (4) Type III barge hull. Barge hulls classed as Type III are those designed to carry products of sufficient hazard to require a moderate degree of control. These barges are required to meet:
              (i) Standards of intact stability as specified in subpart E of part 172 of this chapter; and
              (ii) Hull structural requirements.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 79-023, 48 FR 51008, Nov. 4, 1983; CGD 88-100, 54 FR 40040, Sept. 29, 1989]

              § 151.10-5
              Subdivision and stability.
              Each barge must meet the applicable requirements in subchapter S of this chapter.
              [CGD 70-023, 48 FR 51009, Nov. 4, 1983]

              § 151.10-15
              Certificate endorsement.
              (a)-(b) [Reserved]
              (c) Certificate endorsement. The following information shall be submitted, and upon approval of calculations shall form part of the endorsement on the Certificate of Inspection:
              (1) Limiting draft for each hull type service for which approval is requested.
              (2) Maximum density (lb./gal.) and maximum cargo weight (tons) for each tank for which approval is requested. Their weights will normally reflect uniform loading except that for trim purposes the individual tank cargo weight may exceed the uniform loading tank cargo weight, corresponding to the barge fresh water deadweight at the limiting draft, by 5 percent. Where a greater degree of nonuniform loading is desired, longitudinal strength calculations shall be submitted.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 79-023, 48 FR 51009, Nov. 4, 1983]

              § 151.10-20
              Hull construction.
              (a) Construction features. (1) Each barge hull shall be constructed with a suitable bow form (length, shape, and height of headlog) to protect against diving at the maximum speed at which the barge is designed to be towed. In any integrated tow, only the lead barge need comply with this requirement.
              (2) All “open hopper” type barges shall be provided with coamings around the hopper space and a 36-inch minimum height plowshare breakwater on the forward rake. The plowshare breakwater may be omitted, if it is demonstrated to the satisfaction of the Commandant that sufficient protection is achieved without it. Coamings shall have a minimum height of 36 inches forward and may be graduated to a minimum height of 24 inches at midlength and 18 inches thereafter. All hopper barges constructed with a weathertight rain shield over the hopper space are exempt from these requirements, except that they shall be provided with an 18-inch minimum coaming all around the hopper.
              (3) All “open hopper” type barges modified for the carriage of chlorine in bulk shall be provided with 36-inch minimum height coamings around the hopper.
              (4) All barges in ocean or coastwise service shall be provided with a structural deck and hatches in accordance with the applicable provisions of subchapter E of this chapter and the scantling requirements of the American Bureau of Shipping.
              (b) Hull structural requirements. (1) All Types I, II, and III barges shall comply with the basic structural requirements of the American Bureau of Shipping for barges of the ordinary types and the applicable supplementary requirements of this section.
              (2) Types I and II barges in inland service: A grounding condition shall be assumed where the forward rake bulkhead rests upon a pinnacle at the water surface. The maximum hull and tank bending moment and tank saddle reactions (if applicable) shall be determined. The hull bending stress shall not exceed the applicable limits of paragraphs (b)(2) (i), (ii), or (iii) of this section. The maximum tank bending moment and saddle reaction shall be used in the tank design calculations required by § 151.15-2(b)(3).
              (i) Independent tanks supported by only two saddles do not contribute to the strength and stiffness of the barge hull. In such case, the hull stress shall not exceed either 50 percent of the minimum ultimate tensile strength of the material or 70 percent of the yield strength when specified, whichever is greater.

              (ii) Independent tanks supported by three or more saddles contribute to the strength and stiffness of the hull. In such case, the hull stress shall not exceed the percentage stress values prescribed in § 151.10-20(b)(2)(i), multiplied by the quantity

              (1.5−SWT/UTS),

                where SWT is the stress calculated without including the effect of the tanks, and UTS is the minimum ultimate tensile strength of the material. The value SWT, however, shall in no case be more than 75 percent of UTS.

              (iii) Integral tanks may be considered as contributing to the strength and stiffness of the barge hull. The hull stresses for integral tank barges shall not exceed the percentage stress values prescribed in paragraph (b)(2)(i), of this section.
              (3) Types I and II barges in ocean service:
              (i) Independent tank barges with tanks supported by three or more saddles shall be subjected to a 0.6L0.6 trochoidal wave hogsag analysis to determine the maximum hull and tank bending moments and tank saddle reactions.
              (ii) All independent tank barges, regardless of the number of saddle supports shall be subject to a still water bending analysis to determine the hull bending moment. For those barges with independent tanks supported by three or more saddles, this analysis shall consider tank-hull interaction so as to determine tank bending moments and saddle reactions.
              (iii) The still water tank bending moments and saddle reactions shall be superimposed upon those obtained by simultaneous application of the following dynamic loadings:
              (a) Rolling 30° each side (120° full cycle) in 10 seconds.
              (b) Pitching 6° half amplitude (24° full cycle) in 7 seconds.
              (c) Heaving L/80 half amplitude (L/20 full cycle) in 8 seconds.

              (iv) The hull structure and saddle support system shall be analyzed, using the maximum hull bending moments and saddle reactions obtained from the foregoing. Bending stress shall not exceed 60 percent of the yield strength or 42 percent of the minimum tensile strength of the material, whichever is less. Critical buckling strength shall be at least 75 percent greater than calculated buckling stresses. The maximum tank bending moments and saddle reactions shall be used in the tank design calculations required by § 151.15-3(b)(8).

            Subpart 151.12—Equipment and Operating Requirements for Control of Pollution From Category D NLS Cargoes

              Source:
              CGD 81-101, 52 FR 7777, Mar. 12, 1987, unless otherwise noted.

              § 151.12-5
              Equipment for Category D NLS.

              The Coast Guard endorses the Certificate of Inspection and for ships making foreign voyages issues the endorsed NLS Certificate required by § 151.12-10 for an oceangoing non-self-propelled ship to carry as bulk cargo the following Category D NLSs if the ship meets the requirements of this part and the requirements applying to ships that carry Category D NLS cargoes in §§ 153.470, 153.486, and 153.490 of this chapter:

                Acetic acid
                Acrylic acid
                Adiponitrile
                Aminoethylethanolamine
                Ammonium bisulfite solution
                Butyl methacrylate
                Caustic soda solution
                Coal tar pitch
                Cyclohexanone
                Cyclohexanone, Cychexanol mixture
                Dichloromethane
                2,2-Dichloropropionic acid
                Diethylenetriamine
                N,N-Dimethylacetamide
                Dimethylethanolamine
                Dimethylformamide
                1,4-Dioxane
                Ethanolamine
                N-Ethylcyclohexylamine
                Ethylene cyanohydrin
                Ethylene glycol monoalkyl ethers
                Ethyl methacrylate
                Formic acid
                Glutaraldehyde solution
                Glyoxylic acid solution (50% or less)
                Hydrochloric acid
                Mesityl oxide
                Methyl methacrylate
                Morpholine
                1- or 2-Nitropropane
                Phosphoric acid
                Polyethylene polyamines
                Polymethylene polyphenyl isocyanate
                Propionic acid
                iso-Propyl ether
                Pyridine
                Tetraethylenepentamine
                Tetrahydrofuran
                Triethanolamine
                Triethylenetetramine

              [CGD 81-101, 52 FR 7777, Mar. 12, 1989, as amended by CGD 88-100, 54 FR 40040, Sept. 29, 1989; CGD 92-100, 59 FR 17028, Apr. 11, 1994; CGD 94-900, 59 FR 45139, Aug. 31, 1994; CGD 94-902, 60 FR 34043, June 29, 1995; USCG-2000-7079, 65 FR 67196, Nov. 8, 2000]

              § 151.12-10
              Operation of oceangoing non-self-propelled ships Carrying Category D NLS.
              (a) An oceangoing non-self-propelled ship may not carry in a cargo tank a Category D NLS cargo listed under § 151.12-5 unless the ship has on board a Certificate of Inspection and for ships making foreign voyages an NLS Certificate endorsed under that section to allow the cargo tank to carry the NLS cargo.
              (b) The person in charge of an oceangoing non-self-propelled ship that carries a Category D NLS listed under § 151.12-5 shall ensure that the ship is operated as prescribed for the operation of oceangoing ships carrying Category D NLSs in §§ 153.901, 153.909, 153.1100, 153.1102, 153.1104, 153.1106, 153.1124, 153.1126, 153.1128, 153.1130 and 153.1132 of this chapter.
              [CGD 81-101, 52 FR 7777, Mar. 12, 1987, as amended by CGD 81-101, 53 FR 28974, Aug. 1, 1988 and 54 FR 12629, Mar. 28, 1989]

            Subpart 151.13—Cargo Segregation

              § 151.13-1
              General.
              This subpart prescribes the requirements for cargo segregation for cargo tanks. These requirements are based on considerations of cargo reactivity, stability, and contamination of the surroundings and other cargoes.
              [CGD 88-100. 54 FR 40029, Sept. 29, 1989, as amended by CGD 96-041, 61 FR 50731, Sept. 27, 1996]

              § 151.13-5
              Cargo segregation—tanks.
              (a) The configurations listed in this paragraph refer to the separation of the cargo from its surroundings and list the various degrees of segregation required. Paragraphs and (2) of this section explain the symbols used in lines 1 and 2, in order, under the tank segregation column of Table 151.05.

              (1) Segregation of cargo from surrounding waters (Line 1 of Table 151.05).

              i = Skin of vessel (single skin) only required. Cargo tank wall can be vessel's hull.
              ii = Double skin required. Cargo tank wall cannot be vessel's hull.
              NA = Nonapplicable for this case. Independent tanks already have such segregation built in through design.

              (2) Segregation of cargo space from machinery spaces and other spaces which have or could have a source of ignition (Line 2 of Table 151.05).

              i = Single bulkhead only required. Tank wall can be sole separating medium.
              ii = Double bulkhead, required. Cofferdam, empty tank, pumproom, tank with Grade E Liquid (if compatible with cargo) is satisfactory.

              (b) [Reserved]
              (c) If a cofferdam is required for segregation purposes and a secondary barrier is required for low temperature protection by § 151.15-3(d)(4), the void space between the primary and secondary barriers shall not be acceptable in lieu of the required cofferdam.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 75-59, 45 FR 70273, Oct. 23, 19805; CGD 96-041, 61 FR 50731, Sept. 27, 1996]

            Subpart 151.15—Tanks

              § 151.15-1
              Tank types.
              This section lists the definitions of the various tank types required for cargo containment by Table 151.05.
              (a) Integral. A cargo containment envelope which forms a part of the vessel's hull in which it is built, and may be stressed in the same manner and by the same loads which stress the contiguous hull structure. An integral tank is essential to the structural completeness of its vessel's hull.
              (b) Independent. A cargo containment envelope which is not a contiguous part of the hull structure. An independent tank is built and installed so as to eliminate, wherever possible (or, in any event, to minimize) its stressing as a result of stressing or motion of the adjacent hull structure. In general, therefore, motion of parts of the tank relative to the adjacent hull structure is possible. An independent tank is not essential to the structural completeness of its carrying vessel's hull.
              (c) Gravity. Tanks having a design pressure (as described in Part 54 of this chapter) not greater than 10 pounds per square inch gauge and of prismatic shape or other geometry where stress analysis is neither readily nor completely determinate. (Integral tanks are of the gravity type.)
              (d) Pressure. Independent tanks whose design pressure (as described in Part 54 of this chapter) is above 10 pounds per square inch gauge and fabricated in accordance with part 54, of this chapter. Independent gravity tanks which are of normal pressure vessel configuration (i.e., bodies of revolution, in which the stresses are readily determinate) shall be classed as pressure vessel type tanks even though their maximum allowable working pressure is less than 10 pounds per square inch gauge. Pressure vessel tanks shall be of Classes I, I-L, II, II-L, or III, as defined in subchapter F of this chapter.

              § 151.15-3
              Construction.
              This section lists the requirements for construction of the types of cargo tanks defined in § 151.15-1.
              (a) Gravity type tanks. Gravity type cargo tanks vented at a pressure of 4 pounds per square inch gauge or less shall be constructed and tested as required by standards established by the American Bureau of Shipping or other recognized classification society. Gravity type tanks vented at a pressure exceeding 4 but not exceeding 10 pounds per square inch gauge will be given special consideration by the Commandant.
              (b) Pressure vessel type tanks. Pressure vessel type tanks shall be designed and tested in accordance with the requirements of Part 54 of this chapter.

              (1) Uninsulated cargo tanks, where the cargo is transported, at or near ambient temperatures, shall be designed for a pressure not less than the vapor pressure of the cargo at 115 °F. The design shall also be based on the minimum internal pressure (maximum vacuum), plus the maximum external static head to which the tank may be subjected.
              (2) When cargo tanks, in which the cargo is transported at or near ambient temperature, are insulated with an insulation material of a thickness to provide a thermal conductance of not more than 0.075 B.t.u. per square foot per degree Fahrenheit differential in temperature per hour, the tanks shall be designed for a pressure of not less than the vapor pressure of the cargo at 105 °F. The insulation shall also meet the requirements of paragraph (f) of this section.
              (3) Cargo tanks in which the temperature is maintained below the normal atmospheric temperature by refrigeration or other acceptable means shall be designed for a pressure of not less than 110 percent of the vapor pressure corresponding to the temperature of the liquid at which the system is maintained, or the pressure corresponding to the greatest dynamic and static loads expected to be encountered in service. For mechanically stressed relieved cargo tanks, additional factors relating design pressure and maximum allowable pressure shall be as specified by the Commandant. The material of the tank shall meet the material requirements specified in part 54 of this chapter for the service temperature, and this temperature shall be permanently marked on the tank as prescribed in § 54.10-20 of this chapter.
              (4) The maximum allowable temperature of the cargo is defined as the boiling temperature of the liquid at a pressure equal to the setting of the relief valve.

              (5) The service temperature is the minimum temperature of a product at which it may be contained, loaded and/or transported. However, the service temperature shall in no case be taken higher than given by the following formula.

                t
                z=t
                w−0.25(t
                w−tB)

                where:

                  t
                  z = Service temperature.

                  t
                  w = Boiling temperature of gas at normal working pressure of container but not higher than + 32 °F.

                  t
                  B = Boiling temperature of gas at atmospheric pressure.

              Under normal circumstances, only temperatures due to refrigerated service will be considered in determining the service temperature. Refrigerated service for purposes of this paragraph is defined as service where the temperature is controlled in the process rather than being caused by atmospheric conditions.
              (6) Heat transmission studies, where required, shall assume the minimum ambient temperatures of 0 °F still air and 32 °F still water, and maximum ambient temperatures of 115 °F still air and 90 °F still water.
              (7) Where applicable, the design of the cargo tanks shall investigate the thermal stresses induced in the tanks at the service temperature.
              (8) Calculations showing the stress level in the tanks under dynamic loading conditions for ocean service barges (see § 151.10-20(b)(4)) and grounding conditions for inland service barges (see § 151.10-20-(b)(2)) shall be submitted to the Commandant for approval. These calculations shall take into account the local stresses due to the interaction between the barge hull and the tanks.
              (c) High density cargo. Cargoes with a specific gravity greater than that for which the scantlings of the tank are designed may be carried provided that:
              (1) The maximum cargo weight (tons) in a specific tank does not exceed the maximum cargo weight (tons) endorsed on the certificate of inspection.
              (2) The scantlings of the tank are sufficient to prevent rupture under a full head of the higher density cargo. Scantlings meeting ordinary bulkhead requirements for the full head will satisfy this requirement.
              (d) Arrangements—(1) Collision protection. (i) Tanks containing cargoes which are required to be carried in Type I hulls by Table 151.05 shall be located a minimum of 4 feet inboard from the side shell and box end of the vessel. Tanks containing cargoes which are required to be carried in Type II hulls by Table 151.05 shall be located a minimum of 3 feet inboard from the side shell and box end of the vessel.
              (ii) All independent cargo tanks installed on Type I or Type II barge hulls shall be protected with suitable collision chocks or collision straps. A longitudinal collision load of one and one half times the combined weight of the tank and the cargo shall be assumed. All other independent cargo tanks shall be provided with suitable collision chocks or collision straps assuming a longitudinal collision load equal to the combined weight of the tank and the cargo. The design bearing stress shall not exceed 2 times the yield strength or 1.5 times the minimum ultimate strength, whichever is less.
              (iii) Tanks containing cargoes, which are required to be carried in Type I or Type II hulls by Table 151.05, shall be located a minimum of 25 feet from the head log at the bow. Box barges and trail barges need not comply with this requirement.
              (2) Inspection clearances. The distance between tanks or between a tank and the vessel's structure shall be such as to provide adequate access for inspection and maintenance of all tank surfaces and hull structure; but shall not normally be less than 15 inches except in way of web frames or similar major structural members where the minimum clearance shall be equal to the flange or faceplate width.
              (3) Access openings. Each tank shall be provided with at least a 15″ × 18″ diameter manhole, fitted with a cover located above the maximum liquid level as close as possible to the top of the tank. Where access trunks are fitted to tanks, the diameter of the trunks shall be at least 30 inches.
              (4) Low temperature protection. (i) When low temperature cargoes are to be carried in gravity type tanks at a temperature lower than that for which the hull steel is adequate, a secondary barrier designed to contain leaked cargo temporarily shall be provided. The design of the cargo containment system shall be such that under normal service conditions, or upon failure of the primary tank, the hull structure shall not be cooled down to a temperature which is unsafe for the materials involved. The secondary barrier and structural components of the hull which may be exposed to low temperatures shall meet the material requirements (i.e., chemistry and physical properties) specified in part 54 of this chapter for the service temperature involved. Heat transmission studies and tests may be required to demonstrate that the structural material temperatures in the hull are acceptable.
              (ii) The design shall take into consideration the thermal stresses induced in the cargo tank at the service temperature during loading.
              (iii) Where necessary, devices for spray loading or other methods of precooling or cooling during loading shall be included in the design.
              (iv) Pressure-vessel type tanks shall be radiographed in accordance with the requirements of part 54 of this chapter. For gravity type tanks, all weld intersections or crossings in joints of primary tank shells shall be radiographed for a distance of 10 thicknesses from the intersection. All other welding in the primary tank and in the secondary barrier, shall be spot radiographed in accordance with the requirements specified in part 54 of this chapter for Class II-L pressure vessels.
              (v) For nonpressure vessel type containment systems, access shall be arranged to permit inspection one side each of the primary tank and secondary barrier, under normal shipyard conditions. Containment systems which, because of their peculiar design, cannot be visually inspected to this degree, may be specially considered provided an equivalent degree of safety is attained.
              (e) Installation of cargo tanks. (1) Cargo tanks shall be supported on foundations of steel or other suitable material and securely anchored in place to prevent the tanks from shifting when subjected to external forces. Each tank shall be supported so as to prevent the concentration of excessive loads on the supporting portions of the shell or head.

              (2) Foundations, and stays where required, shall be designed for support and constraint of the weight of the full tank, and the dynamic loads imposed thereon. Thermal movement shall also be considered.

              (3) Foundations and stays shall be suitable for the temperatures they will experience at design conditions.
              (4) Cargo tanks may be installed “on deck,” “under deck,” or with the tanks protruding through the deck. All tanks shall be installed with the manhole openings located in the open above the weather deck. Provided an equivalent degree of safety is attained, the Commandant may approve cargo tanks installed with manhole openings located below the weather deck. Where a portion of the tank extends above the weather deck, provision shall be made to maintain the weathertightness of the deck, except that the weathertightness of the upper deck need not be maintained on:
              (i) Vessels operating on restricted routes which are sufficiently protected; or,
              (ii) Open hopper type barges of acceptable design.
              (5) No welding shall be performed on tanks which require and have been stress relieved unless authorized by the Commandant.
              (f) Materials. (1) Materials used in the construction of cargo tanks shall be suitable for the intended application and shall be in accordance with the applicable requirements of part 54 of this chapter. For cargoes carried at low temperatures, the tank supports and foundations, and portions of the hull which may be exposed to low temperature, shall also meet the applicable requirements of that part.
              (2) When required, cargo tanks shall be lined with rubber or other material acceptable to the Commandant. The interior surfaces of the cargo tanks shall be made smooth, welds chipped or ground smooth, and the surfaces thoroughly cleaned before the lining is applied. The lining material shall be resistive to attack by the cargo, not less elastic than the metal of the tank proper, and nonporous when tested after application. It shall be of substantially uniform thickness. The lining shall be directly bonded to the tank plating, or attached by other satisfactory means acceptable to the Commandant.
              (g) Insulation. (1) Insulation, when provided, shall be compatible with the cargo and the tank materials.
              (2) Insulation in a location exposed to possible high temperature or source of ignition shall be one of the following:
              (i) Incombustible, complying with the requirements of Subpart 164.009 of Part 164 of this chapter; or
              (ii) Fire retardant, having a flame spread rating of 50 or less as determined by ASTM Specification E 84 (incorporated by reference, see § 151.01-2) (Tunnel Test); or,
              (iii) Nonburning or “self-extinguishing” as determined by ASTM Specification D 4986, “Horizontal Burning Characteristics of Cellular Polymeric Materials” (incorporated by reference, see § 151.01-2) and covered by a steel jacket having a minimum thickness of 18 gauge (0.0428 inches) (U.S. Standard Gauge) or an equivalent means of protection acceptable to the Commandant.
              (3) Insulation in a location protected against high temperature or source of ignition need satisfy no requirement for combustibility.
              (4) Insulation shall be impervious to water vapor, or have a vapor-proof coating of a fire-retardant material acceptable to the Commandant. Unless the vapor barrier is inherently weather resistant, tanks exposed to the weather shall be fitted with a removable sheet metal jacket of not less than 18 gauge over the vapor-proof coating and flashed around all openings so as to be weathertight. Insulation which is not exposed to the weather when installed on tanks carrying cargoes above ambient temperatures need not be impervious to water vapor nor be covered with a vapor-proof coating.
              (5) Insulation shall be adequately protected in areas of possible mechanical damage.
              (h) Fire exposure protection. Tanks which are provided with fire exposure protection of one of the following categories may be allowed a reduction in the size of relief valves.
              (1) Approved incombustible insulation meeting the requirements of subpart 164.007 of part 164 of this chapter which is secured to the tank with steel bands.

              (2) Located in a hold or protected by a self-supporting steel jacket or cover (such as a hopper cover) of at least 10 gauge (0.1345) for insulation.

              (i) Tanks not protected against fire exposure as described in this paragraph shall not be permitted a reduction in size of relief valves.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-100, 54 FR 40040, Sept. 29, 1989; USCG-1999-5151, 64 FR 67183, Dec. 1, 1999; USCG-2000-7790, 65 FR 58463, Sept. 29, 2000]

              § 151.15-5
              Venting.
              This section contains definitions and requirements for the various methods of venting specified in Table 151.05. In addition to the requirement that all vents must penetrate into tanks at the top of the vapor space, the following methods of venting and the applicable restrictions are listed:
              (a) Open venting. A venting system which offers no restriction (except pipe losses and flame screen, where used) to the movement of liquid or vapor to or from the cargo tank (via the vent) under normal operating conditions. The total cross-sectional area of the vents shall not be less than the total cross-sectional area of the filling pipe or pipes. Ullage openings may be counted as part of the required cross-sectional area: Provided, That each cargo tank has at least one permanent vent. The minimum size of a cargo tank vent shall be not less than 21/2 inches. The outlet end of the vent shall terminate in a gooseneck bend and shall be located at a reasonable height above the weather deck, clear of all obstructions. No shut-off valve or frangible disk shall be fitted in the vent lines except that a float check valve may be installed so as to exclude the entry of water into the tank (i.e., to prevent downflooding). An open venting system may be fitted with a flame screen.
              (b) Pressure-vacuum venting. A normally closed venting system fitted with a device to automatically limit the pressure or vacuum in the tank to design limits. Pressure-vacuum relief valves shall comply with the requirements of subpart 162.017 of this chapter. The required capacity of the venting system shall be in accordance with part 54 of this chapter.
              (c) Safety relief venting. A closed venting system fitted with a device to automatically limit the pressure in the tank to below its maximum allowable working pressure. The maximum safety relief valve setting shall not exceed the maximum allowable working pressure of the tank. For cargoes carried at ambient temperatures, the minimum safety relief valve setting shall correspond to the saturated vapor pressure of the cargo at 105 °F if carried in an insulated tank, or 115 °F if carried in an uninsulated tank. For cargoes carried below ambient temperature, the safety relief valve setting shall be selected to provide a suitable margin between normal operating pressure of the tank and the opening pressure of the valve but in no case shall it exceed the maximum allowable working pressure of the tank. The safety relief valves shall be of a type approved under subparts 162.001 or 162.018 of subchapter Q of this chapter. The required capacity of the safety relief valves shall be in accordance with the requirements of part 54 of this chapter.
              (d) Rupture disks. (1) When required by the nature of the cargo, rupture disks may be installed in lieu of or in addition to other pressure limiting devices in accordance with the requirements of § 54.15-13 of this chapter.
              (2) When a pressure-vacuum relief valve or safety relief valve normally protected by a rupture disk or breaking pin device is exposed to the cargo due to breakage of the disk, the valve shall be reinspected before being returned to service.

              § 151.15-6
              Venting piping.
              (a) The back pressure in the relief valve discharge lines shall be taken into account when determining the flow capacity of the relief valve to be used. The back pressure in the discharge line shall be limited to 10 percent of the valve operating pressure or a compensating-type valve shall be used. Suitable provision shall be made for draining condensate which may accumulate in the vent piping.
              (b) [Reserved]

              § 151.15-10
              Cargo gauging devices.
              This section contains definitions and requirements for types of gauging devices specified in Table 151.05.
              (a) Open gauging. A gauging method which uses an opening in the cargo tank and which may expose the gauge user to the cargo and its vapors. Examples of this type are gauge hatch, ullage hole.
              (b) Restricted. A gauging device which penetrates the cargo tank and which, in operation, causes or permits the release to the atmosphere of small quantities of cargo vapor or liquid. The amount of cargo released is controlled by the small diameter of the tank penetration opening and by a locally operated valve or similar closure device in that opening. When not in use, this type gauging device is closed to maintain the complete integrity of cargo containment. Examples of this type are rotary tube, fixed tube, slip tube, sounding tube. (See §§ 151.03-49 and 151.15-10(g).)
              (c) Closed. A gauging device which penetrates the cargo tank, but which is part of a closed system maintaining the complete integrity of cargo containment. This device is designed and installed so as not to release cargo liquid or vapor in any amount to the atmosphere. Examples of this type are automatic float, continuous tape (magnetic coupled), sight glass (protected), electronic probe, magnetic, differential pressure cell.
              (d) Isolated or indirect. A gauging method or device which is isolated from the tank (no penetration of the tank shell) and which may employ an indirect measurement to obtain the desired quantity. Examples of this type are weighing of cargo, sonic depth gauge (without penetration of tank shell), pipe flow meter.
              (e) All gauging devices and related fixtures which form a part of the cargo containment barrier shall be of suitable material and shall be designed for the pressure and temperature of the cargo in accordance with the requirements of Subchapter F of this chapter.
              (f) Use of restricted gauging devices. (1) When required in Table 151.05, cargoes carried under pressure shall have restricted gauging devices designed so that the maximum bleed valve opening is not larger than 0.055;inch; diameter, unless provided with an excess flow valve. Sounding tubes are prohibited for use with cargoes having a vapor pressure in excess of 14.7 p.s.i.a. at 115 °F, if carried in an uninsulated tank, or at 105 °F, if carried in an insulated tank.
              (2) When utilizing a sounding tube, the cargo tank vent system shall be designed to prevent the discharge of cargo through the sounding tube due to pressure build up in the cargo tank vapor space. (See § 151.03-43) When cargoes carried at atmospheric pressure are required to have a restricted gauging device, open gauges may be provided in addition to restricted gauges for this type of cargo. However, open gauges may not be used while cargo transfer operations are actually being performed.
              (g) Fixed tube gauges are not acceptable as primary means of gauging. They may be used as a check on the calibration of other gauging devices.
              (h) For pressure-vessel type tanks, each automatic float, continuous reading tape or similar type gauge not mounted directly on the tank or dome shall be fitted with a shutoff device located as close to the tank as practicable. When an automatic float gauging device, which gauges the entire height of the tank, is used, a fixed tube gauge set in the range of 85 percent to 90 percent of the water capacity of the tank shall be provided in addition as a means of checking the accuracy of the automatic float gauge, or other alternate means acceptable to the Commandant may be used.
              (i) Gauge glasses of the columnar type are prohibited.
              (j) Flat sight glasses may be used in the design of automatic float continuous reading tape gauges. However such glasses shall be made of high strength material, suitable for the operating temperatures, of not less than one-half inch in thickness and adequately protected by a metal cover.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by USCG-2005-22329, 70 FR 57183, Sept. 30, 2005]

            Subpart 151.20—Cargo Transfer

              § 151.20-1
              Piping—general.

              (a) Cargo piping systems shall be arranged and fabricated in accordance with this section and Subchapter F. The class of piping system required for a specific cargo shall be as listed in Table 151.05 as a minimum; however, a higher class may be required when the actual service temperature or pressure so dictates. See Table 56.04-2 of this chapter.
              (b) Piping system components shall be suitable for use with the cargoes for which the barge is certificated, and shall be of materials listed in Subchapter F of this chapter, or such other material as the Commandant may specifically approve. All piping materials shall be tested in accordance with the requirements of Subchapter F of this chapter. The valve seat material, packing, gaskets, and all other material which comes into contact with the cargo shall be resistant to the chemical action of the cargoes for which the barge is certificated.
              (c) Cargo piping systems, when subject to corrosive attack of the cargo, and when serving cargo tanks which are required by this subchapter to be lined or coated, shall be constructed of, lined or coated with corrosion-resistant material. Vent systems shall be similarly constructed, lined, or coated up to and including the vent control device.
              (d) All piping systems components shall have a pressure rating at operating temperature (according to the applicable American National Standards Institute, Inc., pressure/temperature relations) not less than the maximum pressure to which the system may be subjected. Piping which is not protected by a relief valve, or which can be isolated from its relief valve, shall be designed for the greatest of:
              (1) The cargo vapor pressure at 115 °F.
              (2) The maximum allowable working pressure of the cargo tank.
              (3) The pressure of the associated pump or compressor relief valve.
              (4) The total discharge head of the associated pump or compressor where a discharge relief valve is not used.
              The escape from cargo piping system relief valves shall be run to venting system or to a suitable recovery system. Provisions shall be made for pressure relief of all piping, valves, fittings, etc., in which excessive pressure build-up may occur because of an increase in product temperature.
              (e) Provisions shall be made by the use of offsets, loops, bends, expansion joints, etc., to protect the piping and tank from excessive stress due to thermal movement and/or movements of the tank and hull structure. Expansion joints shall be held to a minimum and where used shall be subject to individual approval by the Commandant.
              (f) Low temperature piping shall be isolated from the hull structure. Where necessary, arrangements to provide for the protection of the hull structure from leaks in low temperature systems in way of pumps, flanges, etc., shall be provided.
              (g) Connections to tanks shall be protected against mechanical damage and tampering. Underdeck cargo piping shall not be installed between the outboard side of cargo containment spaces and the skin of the barge, unless provision is made to maintain the minimum inspection and collision protection clearances (where required) between the piping and the skin. Cargo piping which is external to tanks, and is installed below the weather deck shall be joined by welding, except for flanged connections to shutoff valves and expansion joints.
              (h) Piping shall enter independent cargo tanks above the weatherdeck, either through or as close to the tank dome as possible.
              (i) Horizontal runs of cargo piping on integral tank barges may be run above or below the weatherdeck. When run below the weatherdeck, the following are applicable:
              (1) Horizontal runs located entirely within integral cargo tanks shall be fitted with a stop valve, located inside the tank that is being serviced and operable from the weatherdeck. There shall be cargo compatibility in the event of a piping failure.

              (2) Horizontal runs of cargo piping installed in pipe tunnels may penetrate gravity type tanks below the weatherdeck: Provided, That each penetration is fitted with a stop valve operable from the weatherdeck. If the tunnel is directly accessible from the weatherdeck without penetrating the cargo tank, the stop valve shall be located on the tunnel side. If the tunnel is not accessible from the weatherdeck, the valve shall be located on the tank side of the penetration.

              (3) The tunnel shall comply with all tank requirements for construction, location, ventilation, and electrical hazard. There shall be cargo compatibility in the event of a piping failure.
              (4) The tunnel shall have no other openings except to the weatherdeck or a cargo pumproom.

              § 151.20-5
              Cargo system valving requirements.
              For the purpose of adequately controlling the cargo, both under normal operating and casualty conditions, every cargo piping system shall be provided with one of the following sets of control valves and meet the requirements listed below. Cargo tanks, whether gravity or pressure vessel type, for cargoes having a saturated vapor pressure of 10 pounds per square inch gauge or less at 115 °F (105 °F if the tank is insulated) shall be provided with a valving system designated as Gravity-1. Cargo tanks, whether gravity or pressure vessel type, for cargoes which are carried below ambient temperature and whose vapor pressure is maintained at 10 pounds per square inch gauge or below shall be provided with a valving system designated as Gravity-2. Cargo tanks for cargoes which have vapor pressures above 10 p.s.i.g. at 115 °F (105 °F if tank is insulated) shall be provided with a valving system designated as Pressure-1. Cargo tanks for cargoes which have vapor pressures above 10 pounds per square inch gauge at 115 °F (105 °F if tank is insulated) and which require greater protection due to their hazardous characteristics shall be provided with a valving system designated as Pressure-2. The requirements of paragraphs (a) through (d) of this section for stop valves or excess flow valves to be fitted at tank penetrations are not applicable to nozzles at which pressure vacuum or safety relief valves are fitted.
              (a) Gravity-1 (G-1). (1) One manually operated stop valve shall be installed on each tank filling and discharge line, located near the tank penetration.
              (2) One stop valve or blind flange shall be installed at each cargo hose connection. When a cargo hose connection is in use, it shall be provided with a stop valve; which may be part of the vessel's equipment or may be part of the shore facility and attached to the barge end of the loading hose. When a cargo hose connection is not in use, it may be secured with a blind flange.
              (3) If individual deepwell pumps are used to discharge the contents of each cargo tank, and the pumps are provided with a remote shutdown device, a stop valve at the tank is not required on the tank discharge line.
              (b) Gravity-2 (G-2). (1) One manually operated stop valve shall be installed on each tank penetration, located as close as possible to the tank.
              (2) One remote operated, quick closing shut-off valve shall be installed at each cargo hose connection.
              (3) A remote shutdown device shall be installed for all cargo handling machinery.
              (c) Pressure-1 (P-1). (1) One manually operated stop valve and one excess flow valve shall be installed on each tank penetration, located as close as possible to the tank.
              (2) One manually operated stop valve shall be installed at each cargo hose connection, when in use.
              (d) Pressure-2 (P-2). (1) One manually operated stop valve and one excess flow valve shall be installed at each tank penetration, located as close as possible to the tank.
              (2) One remote operated quick closing shutoff valve shall be installed at each cargo hose connection when in use.
              (3) No tank penetration shall be less than 1 inch diameter.
              (e) Cargo tank penetrations which are connections for gauging or measuring devices need not be equipped with excess flow or remote operated quick closing valves provided that the opening is constructed so that the outward flow of tank contents shall not exceed that passed by a No. 54 drill size (0.055-inch diameter).

              (f) The control system for any required quick closing shutoff valves shall be such that the valves may be operated from at least two remote locations on the vessel; if means of fire protection is required by Table 151.05, the control system shall also be provided with fusible elements designed to melt between 208 °F and 220 °F, which will cause the quick closing shutoff valves to close in case of fire. Quick closing shutoff valves shall be of the fail-closed (closed on loss of power) type and be capable of local manual operation. Quick closing shutoff valves shall operate from full open to full closed under all service conditions in not more than 10 seconds, without causing excessive pressure surges.
              (g) Excess flow valves, where required, shall close automatically at the rated closing flow of vapor or liquid as tested and specified by the manufacturer. The piping, including fittings, valves, and appurtenances protected by an excess flow valve, shall have a greater capacity than the rated closing flow of the excess flow valve. Excess flow valves may be designed with a bypass not to exceed 0.040-inch diameter opening to allow equalization of pressure, after an operating shutdown.
              (h) Suitable means shall be provided to relieve the pressure and remove liquid contents from cargo lines and hoses to the cargo tank or other safe location prior to effecting disconnections.

              § 151.20-10
              Cargo system instrumentation.
              (a) Each tank operated at other than ambient temperature shall be provided with at least one remote reading temperature sensor located in the liquid phase of the cargo. The temperature gauge shall be located at the cargo handling control station or another approved location.
              (b) Where required, each tank equipped with safety relief valves shall be fitted with a pressure gauge which shall be located at the cargo handling control station or at another approved location.

              § 151.20-15
              Cargo hose if carried on the barge.
              (a) Liquid and vapor line hose used for cargo transfer shall be of suitable material resistant to the action of the cargo. Hose shall be suitable for the temperatures to which it may be subjected and shall be acceptable to the Commandant.
              (b) Hose subject to tank pressure, or the discharge pressure of pumps or vapor compressors, shall be designed for a bursting pressure of not less than 5 times the maximum safety relief valve setting of the tank, pump, or compressor, whichever determines the maximum pressure to which the hose may be subjected in service.
              (c) Each new type of cargo hose, complete with end fittings, shall be prototype tested to a pressure not less than five times its specified maximum working pressure. The hose temperature during this prototype test shall duplicate the intended extreme service temperature. Thereafter, each new length of cargo hose produced shall be hydrostatically tested at ambient temperature to a pressure not less than twice its maximum working pressure nor more than two-fifths its bursting pressure. The hose shall be marked with its maximum working pressure, and if used in other than ambient temperature service, its maximum or minimum temperature.

              § 151.20-20
              Cargo transfer methods.
              (a) Cargo transfer may be accomplished by means of gravity, pumping, vapor or gas pressurization, or fluid displacement unless otherwise provided in Subpart 151.50 of this part.
              (b) Vapor or gas pressurization may be used only in transferring cargo from pressure vessel type cargo tanks. The pressurizing vapor or gas lines shall be provided with safety relief device in the lines set to open at a pressure no greater than 90 percent of the set pressure of the cargo tank safety relief valve. The pressurizing line shall be fitted with a stop valve at the tank, and a check valve to prevent the accidental release of cargo through the pressure line.
              (c) Fluid displacement is permitted with either gravity or pressure vessel type cargo tanks. The displacing fluid shall enter the tank under low relative pressure. The fluid entry line shall be fitted with a safety relief valve set to lift at a pressure no higher than 80 percent of the cargo tank safety relief valve setting.
              (d) When cargo vapors are flammable, combustible or toxic, cargo filling lines entering the top of the tank shall lead to a point at or near the bottom. Spray filling lines, discharging near the top of the tank, may be fitted in lieu of, or in addition to, the above cargo filling lines.

            Subpart 151.25—Environmental Control

              § 151.25-1
              Cargo tank.
              When carrying certain commodities regulated by this subchapter, one of the following types of cargo protection may be required, within the main cargo tank, and in some cases, in the space between the primary and secondary barriers.
              (a) Inerted. All vapor spaces within the cargo tank are filled and maintained with a gas or vapor which will not support combustion and which will not react with the cargo.
              (b) Padded. All vapor spaces within the cargo tanks are filled and maintained with a liquid, gas (other than air), or vapor which will not react with the cargo.
              (c) Ventilated (forced). Vapor space above the liquid surface in the tank is continuously swept with air by means of blowers or other mechanical devices requiring power.
              (d) Ventilated (natural). Vapor space above the liquid surface in the tank is continuously swept with atmospheric air without the use of blowers or other mechanical devices requiring power (e.g., “chimney-effect” ventilation).
              (e) Dry. All vapor space within the cargo tank is filled and maintained with a gas or vapor containing no more than 100 ppm water.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-100, 54 FR 40040, Sept. 29, 1989]

              § 151.25-2
              Cargo handling space.
              Pump rooms, compressor rooms, refrigeration rooms, heating rooms, instrument rooms or other closed spaces regularly entered by operating personnel, in which work is performed on the cargo or in which the cargo movement is locally controlled, may be required to be fitted with one of the following types of ventilation:
              (a) Forced ventilation. The forced ventilation system shall be designed to insure sufficient air movement through these spaces to avoid the accumulation of toxic or flammable vapors and to insure sufficient oxygen to support life, and, in any event, the ventilation system shall have a minimum capacity sufficient to permit a change of air every 3 minutes.
              (b) Natural ventilation. The natural ventilation system shall be designed to insure sufficient air movement to avoid the accumulation of toxic or flammable vapors and to insure sufficient oxygen to support life.

            Subpart 151.30—Portable Fire Extinguishers

              § 151.30-1
              Type.
              When required by Table 151.05, approved portable fire extinguishers shall be installed in accordance with Subpart 34.50 of this chapter. The fire extinguishing media shall be dry chemical or other suitable agent for all locations.

            Subpart 151.40—Temperature or Pressure Control Installations

              § 151.40-1
              Definitions.
              This section defines the various methods by which the cargo may be heated or cooled.
              (a) Boiloff. Cargo pressure and temperatures are maintained by permitting the cargo to boil naturally and the cargo vapor thus generated removed from the tank by venting.
              (b) External cargo cooling—(1) Cargo vapor compression. A refrigeration system in which the cargo vapors generated within the tank are withdrawn, compressed, and the lower energy vapor or its condensate returned to the tank.
              (2) External heat exchange. A refrigeration system in which the cargo vapor or liquid is cooled outside the cargo tanks by being passed through a heat exchanger. Refrigeration is not accomplished by direct compression of the cargo.
              (c) Internal heat exchange. A refrigeration system in which a cooling fluid is passed through heat transfer coils immersed in the cargo tank liquid or vapor phases.
              (d) Tank refrigeration. A refrigeration system in which the cooling fluid is passed around the cargo tank exterior in order to remove heat from the tank or its surroundings.

              (e) No refrigeration. A system that allows the liquefied gas to warm up and increase in pressure. The insulation and tank design pressure shall be adequate to provide for a suitable margin for the operating time and temperatures involved.
              (f) Tank heating. (1) A system in which the cargo is heated by means of steam or other heat transfer fluid running through coils within or around the tank. The cargo itself does not leave the tank.
              (2) A recirculating system in which the cargo leaves the tank, is pumped through a heater and then returned to the tank.

              § 151.40-2
              Materials.
              Materials used in the construction of temperature or pressure control systems shall be suitable for the intended application and meet the requirements of Subchapter F and the Special Requirements section of this subchapter.

              § 151.40-5
              Construction.
              Construction of machinery or equipment, such as heat exchangers, condensers, piping, etc., associated with temperature or pressure control systems shall meet the requirements of Subchapter F of this chapter. The electrical portions of these installations shall meet the requirements of Subchapter J of this chapter.

              § 151.40-10
              Operational requirements.
              Control systems, required by Table 151.05 shall be provided with an audible or visual high cargo temperature or high cargo pressure alarm which is discernible at the towboat. The alarm shall operate when either the pressure or the temperature exceeds the operating limits of the system. The alarm may monitor either pressure or temperature, but must be independent of the control system.

              § 151.40-11
              Refrigeration systems.
              (a) Boiloff systems. The venting of cargo boiloff to atmosphere shall not be used as a primary means of temperature or pressure control unless specifically authorized by the Commandant.
              (b) Vapor compression, tank refrigeration, and secondary refrigeration systems: The required cooling capacity of refrigeration systems shall be sufficient to maintain the cargo at design operating conditions with ambient temperature of 115 °F still air and 90 °F still water. The number and arrangement of compressors shall be such that the required cooling capacity of the system is maintained with one compressor inoperative. Portions of the system other than the compressors need not have standby capacity.

            Subpart 151.45—Operations

              § 151.45-1
              General.
              (a) Barges certificated as tank barges (Subchapter D of this chapter) or cargo barges (Subchapter I of this chapter) for the carriage of cargoes regulated by this subchapter shall meet all applicable requirements for operations in the appropriate subchapter; in addition, requirements prescribed in this subpart shall apply to either type of certification.
              (b) [Reserved]

              § 151.45-2
              Special operating requirements.
              (a) The requirements of this section shall apply to all barges carrying in bulk any cargoes regulated by this subchapter; however, the provisions of this section are not applicable to such barges when empty and gas-freed.
              (b) When it is necessary to operate box or square-end barges as lead barges of tows, the person in charge of the towing vessel shall control the speed to insure protection against diving and swamping of such barges, having due regard to their design and freeboard, and to the operating conditions.
              (c) No cargo tank hatch, ullage hole, or tank cleaning openings shall be opened or remain open except under the supervision of the person in charge, except when the tank is gas free.

              (d) Barges, when tendered to the carrier for transportation, shall have all bilges and void spaces (except those used for ballasting) substantially free of water. Periodic inspections and necessary pumping shall be carried out to insure maintenance of such water-free condition in order to minimize the free surface effects, both in longitudinal and transverse directions. Except when otherwise considered necessary for inspection or pumping, all hatch covers and other hull closure devices for void spaces and hull compartments other than cargo spaces shall be closed and secured at all times.
              (e) Cargo signs and cards. (1) Warning signs shall be displayed on the vessel, port and starboard, facing outboard without obstructions, at all times except when the vessel is gas free. The warning sign shall be rectangular and a minimum of 3 feet wide and 2 feet high. It shall be of sufficient size to accommodate the required alerting information, which shall be shown in black block style letters and numerals (characters) at least 3 inches high on a white background. The minimum spacing between adjacent words and lines of characters shall be 2 inches. The minimum spacing between adjacent characters shall be one-half inch. All characters shall have a minimum stroke width of one-half inch and shall be a minimum of 2 inches wide, except for the letters “M” and “W”, which shall be a minimum of 3 inches wide, and except for the letter “I” and the Numeral “1”, which may be 1/2-inch wide. The signs shall have a 2-inch minimum white border clear of characters. The signs shall be maintained legible. The alerting information shall include the following:

                Warning
                Dangerous Cargo

                (This sign may be covered or removed when Subchapter O commodities are not being carried.)
                No Visitors
                No Smoking
                (This sign may be removed or covered when the commodity is not flammable or combustible.)
                No Open Lights
                (This sign may be removed or covered when the commodity is not flammable or combustible.)

              (2)(i) Names and locations of all cargoes will be displayed in a readily discernible manner on all barges carrying one or more commodities regulated by this subchapter. This may be an individual sign at or on each tank or by a single sign similar to the following example:

                    Tank No.

                    Cargo

                  IP
                  /xxxx/

                  IS
                  /xxxx/

                  2P
                  /xxxx/

                  2S
                  /xxxx/

              These signs may be printed, handwritten, permanent or changeable, but be visible and readable at all times. These signs should be as readable, as those specified in paragraph (e)(1) of this section. Cargoes regulated by other subchapters will be included whenever carried simultaneously with commodities regulated by this subchapter.
              (ii) When the dangerous cargo barge is carrying only a single product, the Warning Sign required by paragraph (e)(1) of this section can be considered as meeting the requirements for the cargo location sign. The name of the commodity shall be added to the Warning Sign.
              (3) A cargo information card for each cargo regulated by this subchapter shall be carried on the bridge or in the pilot house of the towing vessel, readily available for use by the person in charge of the watch. This information card shall also be carried aboard the barge, mounted near the Warning Sign required by paragraph (e)(1) of this section, in such position as to be easily read by a man standing on the deck of the barge. The minimum card size shall be 7″ × 91/2″. The card shall have legible printing on one side only. The card shall be laminated in clear plastic or otherwise made weatherproof. The following data shall be listed:
              (i) Cargo identification and characteristics. Identification of the cargo, as listed in Table 151.05, its appearance and odor. A statement of the hazards involved and instructions for the safe handling of the cargo and, as applicable, the need for special cargo environments.
              (ii) Emergency procedures. Precautions to be observed in the event of spills, leaks, or equipment or machinery breakdown and/or uncontrolled release of the cargo into the waterway or atmosphere. Precautions to be observed in the event of exposure of personnel to toxic cargoes.

              (iii) Firefighting procedures. Precautions to be observed in the event of a fire occurring on or adjacent to the barge, and enumeration of firefighting media suitable for use in case of a cargo fire.
              (f) Surveillance. During the time the cargo tanks contain any amount of liquid or gaseous dangerous cargoes requiring Type I or Type II barge hulls, the barge shall be under surveillance, as set forth in this paragraph:
              (1) The licensed operator, person in command, and mate of a vessel towing a tank barge that need not be manned, and each of them, shall be responsible for monitoring the security and integrity of the tank barge and for ensuring adherence to proper safety precautions. These responsibilities include, but are not limited to—
              (i) Ensuring that every tank barge added to the tow has all tank openings properly secured; has its freeing-ports and scuppers, if any, unobstructed; meets any loadline or freeboard requirements; and neither leaks cargo into the water, voids, or cofferdams nor leaks water into the tanks, voids, or cofferdams;
              (ii) Ensuring that every tank barge in the tow is properly secured within the tow;
              (iii) Ensuring that periodic checks are made of every tank barge in the tow for leakage of cargo into the water, voids, or cofferdams and for leakage of water into the tanks, voids, or cofferdams;
              (iv) Knowing the cargo of every tank barge in the tow, all hazards associated with the cargo, and what to do on discovery of a leak;
              (v) Ensuring that the crew of the vessel know the cargo of every tank barge in the tow, all hazards associated with the cargo, and what to do on discovery of a leak;
              (vi) Reporting to the Coast Guard any leaks from a tank barge in the tow into the water, as required by 33 CFR 151.15; and
              (vii) Ensuring that the crew of the vessel and other personnel in the vicinity of the tank barges in the tow follow the proper safety precautions for tank vessels, and that no activity takes place in the vicinity of the barges that could create a hazard.
              (2) A towing vessel engaged in transporting such unmanned barges shall not leave them unattended. When a barge is moored, but not gas free, it shall be under the care of a watchman who may be a member of the complement of the towing vessel, or a terminal employee, or other person. This person shall be responsible for the security of the barge and for keeping unauthorized persons off the barge. Such person shall be provided with, read, and have in his possession for ready reference the information cards required by paragraph (e) of this section.
              (g) All cargo hatches shall be closed, dogged down, or otherwise tightly secured.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-100, 54 FR 40040, Sept. 29, 1989; CGD 79-116, 60 FR 17158, Apr. 4, 1995]

              § 151.45-3
              Manning.
              Except as provided for in this section, barges need not be manned unless in the judgment of the Officer in Charge, Marine Inspection, such manning is necessary for the protection of life and property and for safe operation of the vessel. Vessels requiring manning for safe operation shall be subject to additional requirements as determined by the Commandant. Towing vessels, while towing barges which are not required to be manned, shall be provided with and have on board the information card required by § 151.45-2(e)(3). This card shall be in the possession of the master or person in charge.

              § 151.45-4
              Cargo-handling.
              (a) On a United States tank barge subject to inspection—
              (1) The owner and operator of the vessel, and his or her agent, and each of them, shall ensure that no transfer of liquid cargo in bulk or cleaning of a cargo tank takes place unless under the supervision of a qualified person designated as the person in charge of the transfer or the cleaning under Subpart C of 33 CFR part 155.
              (2) The person in charge of the transfer shall ensure that enough qualified personnel are on duty to safely transfer liquid cargo in bulk or to safely clean cargo tanks.
              (b) Closing of sea and ballast valves. All sea and ballast valves are to be properly aligned and lashed, or sealed in their correct position prior to beginning cargo transfer operations. Under no circumstances shall such valves be secured by locks.
              (c) Connecting for cargo transfer. (1) Movement of the vessel shall be considered when making the cargo connections to insure safe cargo transfer. Suitable material shall be used in joints and in couplings when making connections to insure that they are tight. Under no circumstances shall less than three bolts be used in a bolted flanged coupling.
              (2) When cargo connections are supported by the vessel's tackle, the person in charge of the transfer operations shall inspect the vessel to insure that sufficient tackles are used.
              (3) Pans or buckets shall be placed under cargo hose connections.
              (4) Cargo transfer operations for any cargo requiring a PV or safety relief venting device in Table 151.05 shall be performed with cargo hatch covers closed.
              (d) Inspection prior to transfer of cargo. Prior to the transfer of cargo, the person in charge of the transfer operation shall inspect the barge and other cargo equipment to assure himself that the following conditions exist:
              (1) The Certificate of Inspection is endorsed for the products to be loaded. Loading restrictions, if any, should be noted.
              (2) Warning signs are displayed as required.
              (3) Cargo information cards for the product are aboard.
              (4) No repair work in way of cargo space is being carried out.
              (5) Cargo connections and hatch covers conform with the provisions of paragraph (c) of this section and cargo valves are properly set.
              (6) All connections for cargo transfer have been made to the vessel's fixed pipeline system.
              (7) In transferring flammable or combustible cargoes, there are no fires or open flames present on the deck, or in any compartment which is located on, facing, open or adjacent to the part of the deck on which cargo connections have been made.
              (8) The shore terminal or other tank vessel concerned has reported itself in readiness for transfer of cargo.
              (9) All sea valves are properly set and those connected to the cargo piping are closed.
              (10) When transferring flammable or combustible cargoes that a determination was made as to whether or not boiler and/or galley fires can be maintained with reasonable safety.
              (e) Duties of the person in charge during transfer operations. The person in charge of the transfer operations shall control the operations as follows:
              (1) Supervise the operation of the cargo system valves.
              (2) Start transfer of cargo slowly.
              (3) Observe cargo connections and hose for leakage.
              (4) Observe operating pressure on cargo systems.
              (5) Comply with loading limitations placed on the vessel by the Certificate of Inspection, if, any, for the purpose of not overloading individual tanks or the vessel.
              (6) Observe the loading rate for the purpose of avoiding overflow of the tanks.
              (f) Cargo transfer operations shall not be started or, if started, shall be discontinued under the following conditions:
              (1) During severe electrical storms.
              (2) If a fire occurs on the barge, the wharf or in the immediate vicinity.
              (3) If potentially dangerous leakage occurs.
              (g) No vessel shall come alongside or remain alongside a barge in way of its cargo tanks while it is transferring cargo unless the conditions then prevailing are mutually acceptable to the persons in charge of cargo handling.
              (h) Auxiliary steam, air, fuel, or electric current. When discharging cargo from one or more barges, the towing vessel may furnish steam, air, fuel, or electric current for pumps on barges or dock, but in no case shall the cargo pass through or over the towing vessel.
              (i) Termination of transfer operations. When transfer operations are completed, the valves on cargo connections on the vessel shall be closed. The cargo connections shall be drained of cargo.
              (j) Transfer of other cargo or stores on a barge. (1) Packaged goods, freight, and ship's stores shall not be loaded or discharged during the loading of flammable cargoes except by permission of the person in charge of the transfer operation. Explosives shall not be loaded or carried on any barge containing products regulated by this subchapter.
              (2) Where package and general cargo is carried directly over bulk cargo tanks, it shall be properly dunnaged to prevent chafing of metal parts and securely lashed or stowed.
              (k) Transportation of other cargo or stores on barges. Barges may be permitted to transport deck cargoes directly over bulk cargo spaces when the nature of such deck cargoes and the methods of loading and unloading same do not create an undue hazard. Such barges shall have their decks properly dunnaged to prevent chafing between the steel parts of the vessel and the deck cargo.
              (l) Deck construction must be adequate to support the intended load. Provisions for carrying deck cargo shall be endorsed on the Certificate of Inspection by the Officer in Charge, Marine Inspection.
              (m) Emergencies. In case of emergencies, nothing in the regulations in this subchapter shall be construed as preventing the person in charge of transfer operations from pursuing the most effective action in his judgment for rectifying the conditions causing the emergency.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970; 35 FR 6431, Apr. 22, 1970, as amended by CGD 75-59, 45 FR 70273, Oct. 23, 1980; CGD 81-059, 54 FR 151, Jan. 4, 1989; CGD 79-116, 60 FR 17158, Apr. 4, 1995]

              § 151.45-5
              Open hopper barges.
              (a) All open hopper barges not constructed or modified in conformance with the provisions of Subpart 151.10 of this part when carrying in bulk any cargoes regulated by this subchapter shall meet the provisions of this section. However, the provisions of this section are not applicable to such barges when empty (not necessarily cleaned or gas-freed).
              (1) Except as otherwise provided in this section, no such open hopper type barge shall be placed as lead barge in any tow. These barges shall be placed in protected positions within the tow so that the danger from diving or swamping will be minimized. Where, due to operating conditions, compliance with this paragraph is impossible, the provisions of paragraph (a)(3) of this section apply. The person in charge of the towing vessel shall be responsible for compliance with this paragraph.
              (2) No such open hopper type barge shall be moved from a loading facility unless all void spaces and bilges are substantially free of water. Periodic inspections and necessary pumping shall be carried out to insure the maintenance of such water-free conditions, in order to minimize the free surface effect in both the longitudinal and transverse directions. Except when considered necessary for inspection or pumping, all hatch covers and other hull closure devices for void spaces and hull compartments shall be closed and secured at all times. In the case of unmanned barges, the person in charge of the towing vessel shall be deemed to be in charge of the barge, and all requirements to be carried out on the barge shall be carried out by or under the direction of this person.
              (3) When an open hopper type barge is in an exposed position, such that protection from swamping provided by adjoining barges cannot be obtained from the location within the tow, it shall be the responsibility of the person in charge of the towing vessel to control speed so as to insure protection against diving and swamping of the barge, having regard to its design and freeboard, and other operating conditions.

              (b) To show that special operating requirements apply to a specific open hopper type barge, additional placards or signs shall be displayed in at least four different locations on the barge when the cargoes subject to this part are carried in any form in the cargo tanks. The placards or signs shall be posted on the barge approximately amidships on each side and near the centerline fore and aft facing outboard. Racks, or other suitable means for mounting such placards or signs, shall be so arranged as to provide clear visibility and shall be protected from becoming readily damaged or obscured. The placards or signs shall be at least equal in dimensions to the DOT standard tank car “Dangerous” placard (103/4 inches square or larger) and shall display a circle (10 inches in diameter or larger) with alternating quadrants of white and red, and so mounted that the red quadrants are centered on the vertical axis. The shipper and/or owner of the barge shall be responsible for the installation of the required placards or signs, including maintenance of them while such barge is in temporary storage with cargo aboard. The person in charge of the towing vessel shall be responsible for the continued maintenance of the placards or signs while such barge is in transit.

              § 151.45-6
              Maximum amount of cargo.
              (a) Tanks carrying liquids or liquefied gases at ambient temperatures regulated by this subchapter shall be limited in the amount of cargo loaded to that which will avoid the tank being liquid full at 105 °F if insulated, or 115 °F if uninsulated. If specific filling densities are designated in Subpart 151.50 of this part, they shall take precedence over that noted above.

              (b) Refrigerated and semirefrigerated tanks shall be filled so that there is an outage of at least 2 percent of the volume of the tank at the temperature corresponding to the vapor pressure of the cargo at the safety relief valve setting. A reduction in the required outage may be permitted by the Commandant when warranted by special design considerations. Normally, then, the maximum volume to which a tank may be loaded is:

                V
                L = 0.98d
                r
                V ÷ d
                L

                where:

                  V
                  L = Maximum volume to which tank may be loaded.

                  V  = Volume of tank.

                  d
                  r = Density of cargo at the temperature required for a cargo vapor pressure equal to the relief valve setting.

                  d
                  L = Density of cargo at the loading temperature and pressure.

              § 151.45-7
              Shipping papers.
              Each barge carrying dangerous cargo shall have on board a bill of lading, manifest, or shipping document giving the name of shipper, location of the loading point, and the kind, grade, and approximate quantity by compartment of each cargo in the barge. Such manifest or bills of lading may be made out by the shipper, master of the towing vessel, owner, or agent of the owner. However, in the case of unmanned barges the master of the towing vessel shall either have a copy of the shipping papers for each barge in his tow or he shall make an entry in the towing vessel's log book giving the name of the shipper, location where the barge was loaded, and the kind, grade, and quantity of cargo by compartment in the barge. The barge shall not be delayed in order to secure the exact quantities of cargo.

              § 151.45-8
              Illness, alcohol, drugs.
              A person who is under the influence of liquor or other stimulants, or is so ill as to render him unfit to perform service shall not be permitted to perform any duties on the barge.

              § 151.45-9
              Signals.
              While fast to a dock, a vessel during transfer of bulk cargo shall display a red flag by day or a red light by night, which signal shall be so placed that it will be visible on all sides. When at anchor, a vessel during transfer of bulk cargo shall display a red flag by day, placed so that it will be visible on all sides. This flag may be metallic.

            Subpart 151.50—Special Requirements

              Editorial Note:
              Nomenclature changes to subpart 151.50 of part 151 appear by CGD-95-072, 60 FR 50465, Sept. 29, 1995, and CGD-96-041, 61 FR 50732, Sept. 27, 1996.

              § 151.50-1
              General.
              Special requirements found in this subpart pertain to specific cargoes and to similar groups of cargoes. These requirements are in addition to and take precedence over any other requirements found in these regulations.

              § 151.50-5
              Cargoes having toxic properties.
              When table 151.05 refers to this section, the following apply:
              (a) [Reserved]

              (b) Independent tanks shall be designed and tested for a head of at least 8 feet above the top of the tank using the specific gravity of the product to be carried. In addition, tank design calculations shall demonstrate that the tank can withstand, without rupture, a single loading to the highest level to which the product may rise, if that exceeds 8 feet. In general, plate less than five-sixteenths inch in thickness shall not be used in the fabrication of independent tanks unless otherwise approved.
              (c)(1) Cargo tanks transporting liquids having a Reid vapor pressure exceeding 14 pounds per square inch absolute or vented at a gauge pressure exceeding 4 pounds per square inch, or where air or water pressure is used to discharge the cargo, shall be fabricated as arc-welded unfired pressure vessels.
              (2) Unfired pressure vessel cargo tanks shall be designed for a pressure not less than the vapor pressure, in pounds per square inch gauge, of the lading at 115 °F, or the maximum air or water pressure used to discharge the cargo, whichever is greater, but in no case shall the design pressure of such tanks be less than 30 pounds per square inch gauge.
              (d) Piping. (1) The pumps and piping used for cargo transfer shall be independent of all other piping.
              (2) Where multiple cargoes are carried, and the cargo piping conveying cargoes covered under this section are led through cargo tanks containing other products, the piping shall be encased in a tunnel.
              (3) Where cargo lines handling other products, or bilge and ballast piping are led through tanks containing cargoes covered by this section, the piping shall be enclosed in a tunnel.
              (e) Gravity type cargo tanks shall be fitted with an approved pressure-vacuum relief valve of not less than 21/2-inch size, which shall be set at a pressure of not less than 3 pounds per square inch gauge, but not in excess of the design pressure of the tank.
              (f) The discharge fittings from each safety relief or pressure vacuum relief valve shall be directed in such a manner as to not impinge on another tank, piping or any other equipment which would increase the fire hazard should burning products be discharged from the safety or pressure vacuum relief valve as a result of a fire or other casualty. In addition, the discharges shall be directed away from areas where it is likely that persons might be working and as remote as practicable from ventilation inlets and ignition sources. A common discharge header may be employed if desired. The area near the discharge fittings shall be clearly marked as a hazardous area.
              (g) A means shall be provided for either the reclamation or safe venting of vapors during the loading and unloading operations. For this purpose the safety relief or pressure vacuum relief valve shall be provided with a valved bypass to a vapor return line shore connection which shall be used whenever vapor return shore facilities are available. In the event vapors must be vented to the atmosphere, a vent riser shall extend at least 12 feet above the highest level accessible to personnel. The vent riser may be collapsible for ease of stowage when not in use. Vapor return lines or vent risers for tanks carrying the same class product may be connected to a common header system if desired. Tanks carrying cargoes covered by this section shall be vented independent of tanks carrying other products.
              (h) The pump room ventilation outlet duct exhausts shall terminate at a distance of at least 6 feet above the enclosed space or pump room and at least 6 feet from any entrance to the interior part of the vessel. The discharge end of the exhaust ducts shall be located so as to preclude the possibility of recirculating contaminated air through the pump room, or other spaces where personnel may be present.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-100, 54 FR 40040, Sept. 29, 1989]

              § 151.50-6
              Motor fuel antiknock compounds.
              When transporting motor fuel antiknock compounds containing tetraethyl lead and tetramethyl lead the requirements listed in this section shall be observed.

              (a) Tanks used for these cargoes shall not be used for the transportation of any other cargo except those commodities to be used in the manufacture of tetraethyl lead and tetramethyl lead.

              (b) Pump rooms shall be equipped with forced ventilation with complete air change every 2 minutes. Air analysis shall be run for lead content to determine if the atmosphere is satisfactory prior to personnel entering the pump room.
              (c) Entry into cargo tanks used for the transportation of these cargoes is not permitted.
              (d) No internal tank inspection is required. If it is desired to internally inspect tanks used for these cargoes, the Commandant must be notified in advance before such inspection is made.
              (e) The provisions of § 151.50-5 shall also be met as a requirement for shipping antiknock compounds containing tetraethyl lead and tetramethyl lead.

              § 151.50-10
              Alkylene oxides.
              (a) For the purpose of this part, alkylene oxides are considered to be ethylene oxide and propylene oxide.
              (b) Alkylene oxides transported under the provisions of this part shall be acetylene free.
              (c)(1) No other product may be transported in tanks certified for an alkylene oxide except that the Commandant may approve subsequent transportation of other products and return to alkylene oxide service if tanks, piping and auxiliary equipment are adequately cleaned to the satisfaction of the Marine Inspector.
              (2) Unless authorized by the Commandant, no other kind of cargo except methane, ethane, propane, butane and pentane shall be on board a tank vessel certificated for the carriage of an alkylene oxide at the same time an alkylene oxide in either the liquid or vapor state is present in any cargo tank. Alkylene oxide tanks shall not be installed in tanks intended for any other cargo.
              (d) All valves, flanges, fittings, and accessory equipment shall be of a type suitable for use with the alkylene oxides and shall be made of steel or stainless steel, or other materials acceptable to the Commandant. Impurities of copper, magnesium and other acetylide-forming metals shall be kept to a minimum. The chemical composition of all material used shall be submitted to the Commandant for approval prior to fabrication. Disks or disk faces, seats and other wearing parts of valves shall be made of stainless steel containing not less than 11 percent chromium. Mercury, silver, aluminum, magnesium, copper, and their alloys shall not be used for any valves, gauges, thermometers, or any similar devices. Gaskets shall be constructed of spirally wound stainless steel with “Teflon” or other suitable material. All packing and gaskets shall be constructed of materials which do not react spontaneously with or lower the autoignition temperature of the alkylene oxides.
              (e) The pressure rating of valves, fittings, and accessories shall be not less than the maximum pressure for which the cargo tank is designed, or the shutoff head of the cargo pump, whichever is greater, but in no case less than 150 pounds per square inch. Welded fittings manufactured in accordance with A.N.S.I. Standards shall be used wherever possible, and the number of pipe joints shall be held to a minimum. Threaded joints in the cargo liquid and vapor lines are prohibited.
              (f) The thermometer shall terminate in the liquid space and shall be attached to the shell by welding with the end of the fitting being provided with a gastight screwed plug or bolted cover.
              (g) Automatic float continuous reading tape gauge, and similar types, shall be fitted with a shutoff valve located as close to the tank as practicable, which shall be designed to close automatically in the event of fracture of the external gauge piping. An auxiliary gauging device shall always be used in conjunction with an automatic gauging device.
              (h) Filling and discharge piping shall extend to within 4 inches of the bottom of the tank or sump pit if one is provided.
              (i) Venting. (1) The discharge fittings from each safety relief or pressure vacuum relief valve shall be directed in such a manner as to not impinge on another tank, piping or any other equipment which would increase the fire hazard should burning products be discharged from the safety or pressure vacuum relief valve as a result of a fire or other casualty. In addition, the discharges shall be directed away from areas where it is likely that persons might be working and as remote as practicable from ventilation inlets and ignition sources. A common discharge header may be employed if desired. The area near the discharge fittings shall be clearly marked as a hazardous area.
              (2) A means shall be provided for either the reclamation or safe venting of vapors during the loading and unloading operations. For this purpose, the safety relief or pressure vacuum relief valve shall be provided with a valved bypass to a vapor return line shore connection which shall be used whenever vapor return shore facilities are available. In the event vapors must be vented to the atmosphere, a vent riser shall be connected to the vapor return line and extend at least 12 feet above the highest level accessible to personnel. The vent riser may be collapsible for ease of stowage when not in use. The vent riser shall not be connected to a safety relief or pressure vacuum valve. Vapor return lines or vent risers for tanks carrying the same class product may be connected to a common header system if desired. Tanks carrying alkylene oxides shall be vented independent of tanks carrying other products.
              (3) The outlet of each vent riser shall be fitted with acceptable corrosion-resistant flame screen of suitable material or a flame arrester suitable for use with alkylene oxide.
              (j) Ventilation. (1) All enclosed spaces within the hull shall be vented or ventilated in accordance with the provisions of this subchapter except as otherwise provided for in this subpart.
              (2) The enclosed spaces in which the cargo tanks are located shall be inerted by injection of a suitable inert gas or shall be well ventilated.
              (3) The enclosed spaces in which the cargo tanks are located, if an inerting system is not installed, shall be fitted with forced ventilation of such capacity to provide a complete change of air every three minutes and arranged in such a manner that any vapors lost into the space will be removed. The ventilation system shall be in operation at all times cargo is being loaded or discharged. No electrical equipment shall be fitted within the spaces or within ten feet of the ventilation exhaust from these spaces.
              (4) All ventilation machinery shall be of nonsparking construction and shall not provide a source of vapor ignition.
              (5) Each vent shall be fitted with a flame screen of corrosion resistant wire which is suitable for use with the alkylene oxide.
              (k)(1) Flexible metal hose fabricated of stainless steel or other acceptable material, resistant to the action of the alkylene oxide, shall be fitted to the liquid and vapor lines during cargo transfer.
              (2) The hose shall be marked with the maximum pressure guaranteed by the manufacturer, and with his certification with the words “Certified for _____ Oxide.”
              (3) Cargo hose intended for alkylene oxide service shall not be used for any other products except those which are compatible with the alkylene oxide.
              (l) Vessel shall be electrically bonded to the shore piping prior to connecting the cargo hose. This electrical bonding shall be maintained until after the cargo hose has been disconnected and any spillage has been removed.
              (m) Cargo shall be discharged by pumping or by displacement with nitrogen or other acceptable inert gas. In no case shall air be allowed to enter the system. During loading and unloading operations, the vapor shall not be discharged to the atmosphere. Provisions shall be made to return all displaced vapor to the loading facility. The loading rate and the pressure applied to the tank to discharge the cargo shall be so limited to prevent opening the safety relief valves.
              (n) During cargo transfer, a water hose with pressure to the nozzle, when atmospheric temperatures permit, shall be connected to a water supply for immediate use during filling and discharge operations and any spillage of alkylene oxide shall be immediately washed away. This requirement can be met by facilities provided from shore.
              (o) Prior to disconnecting shore lines, the pressure in the liquid and vapor lines shall be relieved through suitable valves installed at the loading header. The liquid and vapor discharged from these lines shall not be discharged to atmosphere.

              (p) The safety relief valves shall be tested by liquid, gas, or vapor pressure at least once every 2 years to determine the accuracy of adjustment and, if necessary, shall be reset. Alkylene oxides shall not be used as the testing medium.
              (q) The special requirements for ethylene oxide contained in § 151.50-12 and for propylene oxide contained in § 151.50-13 shall also be observed.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 85-061, 54 FR 50966, Dec. 11, 1989]

              § 151.50-12
              Ethylene oxide.
              (a)(1) Ethylene oxide shall be carried in fixed, independent, pressure vessel type cargo tanks, designed, constructed, arranged and, if necessary, equipped with machinery to maintain the cargo temperature below 90 °F except as otherwise provided for in paragraph (a)(3) of this section.
              (2) Ethylene oxide shall be loaded at a temperature below 70 °F.
              (3) When ethylene oxide is to be transported at or near atmospheric pressure, the Commandant may permit the use of alternate methods of storage which are consistent with the minimum requirements of this subpart.
              (b)(1) All cargo tanks shall be constructed of a carbon steel or stainless steel acceptable to the Commandant. Impurities of copper, magnesium and other acetylide-forming metals shall be kept to a minimum. The chemical composition of all steel used shall be submitted to the Commandant for approval prior to fabrication. Aluminum, copper and other acetylide-forming metals, such as silver, mercury, magnesium, and their alloys shall not be used as materials of construction for tanks or equipment used in handling ethylene oxide.
              (2) Cargo tanks shall meet the requirements of Class I pressure vessels.
              (3) Cargo tanks shall be designed for the maximum pressure of vapor or gas used in discharging the cargo but in no case shall the design pressure of such tanks be less than 75 pounds per square inch gauge. The tank shell and heads shall not be less than 5/16-inch thick.
              (c)(1) Cargo tanks shall be located below deck in holds or enclosed spaces with the domes or trunks extended above the weather deck and terminating in the open. Provisions shall be made to maintain the watertightness of the deck by means of watertight seals around such domes or trunks. The holds or enclosed spaces, in which the ethylene oxide tanks are located, shall not be used for any other purpose. However, in open hopper type barges of a suitable design approved for such service, the weatherdeck may not be required to be watertight.
              (2) All cargo tanks shall be installed with the manhole openings and all tank connections located above the weatherdeck in the open.
              (3) Tanks shall be electrically bonded to the hull.
              (4) No welding of any kind shall be done on cargo tanks or supporting structure unless authorized by the Commandant.
              (d) All cargo tanks, piping, valves, fittings, and similar equipment which may contain ethylene oxide in either the liquid or vapor phase, including the vent risers, shall be insulated. Flanges need not be covered, but if covered, a small opening shall be left at the bottom of the flange cover to detect leaks. Insulation shall be of an approved incombustible material suitable for use with ethylene oxide, which does not significantly lower the autoignition temperature and which does not react spontaneously with ethylene oxide. The insulation shall be of such thickness as to provide a thermal conductance of not more than 0.075 B.t.u. per square foot per degree Fahrenheit differential in temperature per hour.
              (e)(1) When cooling systems are installed to maintain the temperature of the liquid below 90 °F, at least two complete cooling plants, automatically regulated by temperature variations within the tanks shall be provided; each to be complete with the necessary auxiliaries for proper operation. The control system shall also be capable of being manually operated. An alarm shall be provided to indicate malfunctioning of the temperature controls. The capacity of each cooling system shall be sufficient to maintain the temperature of the liquid cargo at or below the design temperature of the system.

              (2) An alternate arrangement may consist of three cooling plants, any two of which shall be sufficient to maintain the temperature of the liquid cargo at or below the design temperature of the system.
              (3) Cooling systems requiring compression of ethylene oxide are prohibited.
              (f) In addition to the shutoff valve required, all tank connections larger than one-half inch inside pipe size, except safety relief valves and liquid level gauging devices, shall be fitted with either internal back pressure check valves or internal excess flow valves in conjunction with a quick closing stop valve operable from at least two remote locations. The quick closing stop valve shall be of the “fail safe” type acceptable to the Commandant and shall be equipped with a fusible plug designed to melt between 208 °F and 220 °F, which will cause the quick closing valve to close automatically in case of fire. The quick closing valve shall be located as close to the tank as possible.
              (g) Piping systems intended for ethylene oxide service shall not be used for any other product and shall be completely separate from all other systems. The piping system shall be designed so that no cross connections may be made either through accident or design.
              (h) Each safety relief valve shall be set to start to discharge at not less than 75 pounds per square inch gauge, nor more than the design pressure of the tank.
              (i) The filling density shall not exceed 83 percent.
              (j)(1) The cargo shall be shipped under a suitable protective inerting gas system, such as nitrogen. When nitrogen gas is used, the gas inerting system shall be so designed that the vapor space above the liquid cargo will be filled and maintained with a gas mixture of not less than 45 percent nitrogen. Other gases proposed for inerting use may be given consideration by the Commandant. Original charging only of protective inerting gas at the loading facility is not considered adequate. A sufficient amount of spare inerting gas as approved by the Commandant shall be provided on the vessel in order to maintain the proper concentration of the gas in the event of normal leakage or other losses.
              (2) Any inerting gas selected should be at least 98 percent pure and free of reactive materials, such as ammonia, hydrogen sulfide, sulfur compounds, and acetylene.
              (k) Prior to loading, a sample from the cargo tank will be taken to insure that the pad gas will meet the requirements of paragraph (j) of this section and that the oxygen content of the vapor space will be not more than 2 percent maximum. If necessary, a sample will be taken after loading to insure the vapor space meets this requirement.
              (l) The cargo piping shall be inspected and tested at least once in each 2 calendar years.
              (m) In those cases where the cargo transfer hose used is not part of the barge's equipment, the person in charge of the transfer operation shall determine that the provisions of § 151.50-10(k) have been met before using this hose. A certificate of test, supplied by the transfer facility, will be considered as adequate for this determination.
              (n) The provisions of § 151.50-10 shall be complied with as a requirement for shipping ethylene oxide.
              (o) A hydrostatic test of 11/2 times the design pressure shall be made on the cargo tanks at least once in each 4 years at the time the internal examination is made and at such other times as considered necessary by the Officer in Charge, Marine Inspection.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 85-061, 54 FR 50966, Dec. 11, 1989]

              § 151.50-13
              Propylene oxide.
              (a)(1) Pressure vessel cargo tanks shall meet the requirements of Class II pressure vessels.
              (2) Cargo tanks shall be designed for the maximum pressure expected to be encountered during loading, storing and discharging the cargo but in no case shall the design pressure of pressure vessel tanks be less than thirty (30) pounds per square inch gauge. The tank shell and heads shall not be less than 5/16-inch thick.

              (b) When propylene oxide is carried on board a vessel, piping systems in propylene oxide service shall not be used for any other product and shall be completely separate from all other systems. The piping system shall be designed so that no cross connection may be made through inadvertence.
              (c) Each safety relief valve shall be set to start to discharge at not less than 30 pounds per square inch gauge, nor more than the design pressure of the tank.
              (d) Filling density shall not exceed 80 percent.
              (e)(1) The cargo shall be shipped under a suitable protective padding, such as nitrogen gas. Other gases proposed for use as padding may be given consideration by the Commandant. Original charging only of protective gas padding at the loading facility is not considered adequate. A sufficient amount of spare padding gas as approved by the Commandant shall be provided on the vessel in order to maintain the proper concentration of the gas in the event of normal leakage or other losses.
              (2) Any padding gas selected should be at least 98 percent pure and free of reactive materials.
              (f) Prior to loading, a sample from the cargo tank will be taken to insure that the pad gas will meet the requirements of paragraph (e) of this section and that the oxygen content of the vapor space will be not more than 2 percent maximum. If necessary, a sample will be taken after loading to insure the vapor space meets this requirement.
              (g) The cargo piping shall be subjected to a hydrostatic test of 11/2 times the maximum pressure to which they may be subjected in service.
              (h) The Commandant may permit the transportation of propylene oxide in other than pressure vessel type tanks if it is shown to his satisfaction that a degree of safety is obtained consistent with the minimum requirements of this subpart.
              (i) The provisions of § 151.50-10 shall be complied with as a requirement for shipping propylene oxide.

              § 151.50-20
              Inorganic acids.
              (a)(1) Gravity type cargo tanks shall be designed and tested to meet the rules of the American Bureau of Shipping for a head of water at least 8 feet above the tank top or the highest level the lading may rise, whichever is the greater. The plate thickness of any part of the tank shall not be less than three-eighths inch.
              (2) Gravity tank vents. (i) The outlet end of the gravity tank vent shall terminate above the weatherdeck, clear of all obstructions and away from any source of ignition.
              (ii) The gravity tank vent shall terminate in a gooseneck bend and shall be fitted with a single flame screen or two fitted flame screens as described in § 151.03-25. No shutoff valve or frangible disk shall be fitted in the vent lines.

              (b)(1) Pressure vessel type cargo tanks shall be independent of the vessel's structure and shall be designed for the maximum pressure to which they may be subjected when compressed air is used to discharge the cargo, but in no case shall the design pressure be less than that indicated as follows:

                Fluorosilicic Acid—50 pounds per square inch gauge.
                Hydrochloric Acid—50 pounds per square inch gauge.

                  Hydrofluorosilicic Acid, see Fluorosilicic Acid.
                Phosphoric Acid—30 pounds per square inch gauge.
                Sulfuric Acid—50 pounds per square inch gauge.

              (2) Pressure vessel type cargo tanks shall be of welded construction meeting the requirements for Class II or Class III given in Part 54 of this chapter.
              (3) When compressed air is used to discharge the cargo, the tank shall be fitted with a vent led to the atmosphere in which a rupture disk shall be installed. The rupture disk shall be designed to burst at a pressure not exceeding the design pressure of the tank. An auxiliary vent to relieve the pressure or vacuum in the tank during the cargo transfer operation may be led from the vent line between the tank and the rupture disk. A shutoff valve may be fitted in the auxiliary vent.

              (c) Openings in tanks are prohibited below deck, except for access openings used for inspection and maintenance of tanks, or unless otherwise specifically approved by the Commandant. Openings shall be fitted with bolted cover plates and acid-resistant gaskets.

              (d) Where special arrangements are approved by the Commandant to permit a pump suction to be led from the bottom of the tank, the filling and discharge lines shall be fitted with shutoff valves located above the weatherdeck or operable therefrom.
              (e) The outage shall not be less than 1 percent.
              (f) All enclosed compartments containing cargo tanks and all machinery spaces containing cargo pumps shall be fitted with effective means of ventilation.
              (g) A separator shall be fitted in compressed air lines to the tank when air pressure is used to discharge the cargo.
              (h) Only installed electric or portable battery lights shall be used during the cargo transfer operations. Smoking is prohibited and the person in charge of cargo transfer shall post No Smoking signs during cargo transfer operations.
              (i) Tanks approved for the transportation of acid cargoes subject to this section shall not be used for the transportation of any other commodity, except upon authorization by the Commandant (CG-ENG).
              (j) Each cargo tank shall be subjected to an internal examination at least once in every 4 years. If cargo tank lining is required and the lining of the cargo tank has deteriorated in service or is not in place, the Marine Inspector may require the tank to be tested by such nondestructive means as he may consider necessary to determine its condition.

              (k) The special requirements for fluorosilicic acid in § 151.50-77, for hydrochloric acid in § 151.50-22, for hydrofluorosilicic acid, see fluorosilicic acid, for phosphoric acid in § 151.50-23, and for sulfuric acid in § 151.50-21 also apply to the carriage of those acids.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 80-001, 46 FR 63279, Dec. 31, 1981; CGD 82-063b, 48 FR 4781, Feb. 3, 1983; CGD 88-100, 54 FR 40040, Sept. 29, 1989; CGD 92-100, 59 FR 17028, Apr. 11, 1994]

              § 151.50-21
              Sulfuric acid.
              (a) How sulfuric acid may be carried. (1) Sulfuric acid of concentration of 77.5 percent (1.7019 specific gravity) (59.8° Baumé) or greater concentrations with or without an inhibitor, provided the corrosive effect on steel measured at 100 °F is not greater than that of 66° Baumé commercial sulfuric acid, may be transported in unlined gravity type cargo tanks or unlined pressure vessel type cargo tanks.
              (2) Sulfuric acid of concentration of 65.25 percent (1.559 specific gravity) (52° Baumé) or greater concentrations, provided the corrosive effect on steel measured at 100 °F is not greater than that of 52° Baumé commercial sulfuric acid, may be transported in unlined pressure vessel type cargo tanks independent of the vessel's structure.
              (3) Sulfuric acid of concentration not to exceed 65.25 percent (1.559 specific gravity) (52° Baumé) may be transported in gravity type cargo tanks or pressure-vessel type cargo tanks which are lined with lead or other equally suitable acid-resistant material acceptable to the Commandant.
              (4) Sulfuric acid of concentration not to exceed 51 percent (1.408 specific gravity) (42° Baumé) and spent sulfuric acid resulting from the use of sulfuric acid in industrial processes may be transported in gravity type cargo tanks which are lined with rubber or other equally suitable acid-resistant material acceptable to the Commandant. See § 151.15-3(f)(2).
              (5) Spent or sludge sulfuric acid resulting from the use of sulfuric acid in industrial processes may be transported in unlined gravity type cargo tanks or unlined pressure vessel type cargo tanks, provided the corrosive effect on steel is not greater than that of commercial sulfuric acid as prescribed in paragraph (a)(1) of this section.
              (b) Heating coils will be the only acceptable means of liquefying frozen or congealed sulfuric acid.
              (c) During cargo transfer, a water hose shall be connected to a water supply ready for immediate use and any leakage or spillage of acid shall be immediately washed down. This requirement can be met by facilities provided from shore.
              (d) The requirements of § 151.50-20 are also applicable to the shipment of sulfuric acid.

              § 151.50-22
              Hydrochloric acid.

              (a) Hydrochloric acid shall be carried in gravity or pressure type cargo tanks which are independent of the vessel's structure provided such tanks are lined with rubber or other equally suitable material acceptable to the Commandant. See § 151.15-3(f)(2).
              (b) Notwithstanding the provisions of § 151.50-20(b)(3), compressed air may be used to discharge hydrochloric acid from gravity type cargo tanks only if the tanks are of cylindrical shape with dished heads, provided the air pressure does not exceed the design pressure of the tank but in no case shall it exceed 10 pounds per square inch gauge. Such tanks shall be fitted with pressure relief devices and need not be vented to the atmosphere as required by § 151.50-20(b)(3).
              (c) During cargo transfer, a water hose shall be connected to a water supply and be ready for immediate use. Any leakage or spillage of acid shall be immediately washed down. This requirement can be met by facilities provided from shore.
              (d) Spent hydrochloric acid or hydrochloric acid adulterated by other chemicals, inhibitors, oils, solvents, water, etc., shall not be transported in bulk except upon authorization by the Commandant (CG-ENG).
              (e) The requirements of § 151.50-20 are also applicable to the shipment of hydrochloric acid.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-100, 54 FR 40040, Sept. 29, 1989]

              § 151.50-23
              Phosphoric acid.
              (a) The term phosphoric acid as used in this subpart shall include, in addition to phosphoric acid, aqueous solutions of phosphoric acid, and super phosphoric acid.
              (b) Phosphoric acid may be carried in either gravity or pressure type cargo tanks. The tanks shall be rubber-lined, or lined or clad with other suitable material acceptable to the Commandant, or shall be fabricated of a phosphoric acid resistant stainless steel. See § 151.15-3(f)(2).
              (c) The vessel's shell plating shall not be used as any part of the boundaries of gravity type cargo tanks.
              (d) Cargo piping, including valves, fittings, and flanges where exposed to the acid, shall be rubber-lined, or lined, coated or clad with other corrosion-resistant material, or shall be fabricated of a phosphoric acid resistant stainless steel. Vent piping, including flanges and fittings, shall be similarly protected at least to the height of the frangible disk if such is installed.
              (e) Phosphoric acid adulterated by other chemicals, inhibitors, oils, solvents, etc., shall not be transported in bulk cargo tanks except upon authorization by the Commandant (CG-ENG).
              (f) The requirements of § 151.50-20 are also applicable to the shipment of phosphoric acid.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 82-063b, 48 FR 4781, Feb. 3, 1983; USCG-2014-0688, 79 FR 58284, Sept. 29, 2014]

              § 151.50-30
              Compressed gases.
              (a) All tank inlet and outlet connections, except safety relief valves, liquid level gauging devices, and pressure gauges shall be marked to designate whether they terminate in the vapor or liquid space. Labels, when used, shall be of corrosion-resistant materials and may be attached to valves.
              (b) Venting. (1) Except as provided in paragraph (b)(2) of this section each safety relief valve installed on a cargo tank shall be connected to a branch vent of a venting system which shall be constructed so that the discharge of gas will be directed vertically upward to a point at least 10 feet above the weatherdeck or the top of any tank or house located above the weatherdeck.
              (2) Safety valves on cargo tanks in barges may be connected to individual or common risers which shall extend to a reasonable height above the deck. Where the escape of vapors from the venting system may interfere with towing operations, the installation shall be acceptable to the Commandant, and the arrangement shall be such as to minimize the hazard of escaping vapors. Arrangements specially provided for venting cargo tanks forming part of the hull on unmanned barges will be given special consideration by the Commandant.

              (3) The capacity of branch vents or vent headers shall depend upon the number of cargo tanks connected to such branch or header as provided in Table 151.50-30(b)(3).

                Table 151.50-30(b)(3)—Capacity of Branch Vents or Vent Headers

                    Number of cargo tanks

                    Percent of total valve discharge

                  1 or 2
                  100

                  3
                  90

                  4
                  80

                  5
                  70

                  6 or more
                  60

              (4) Return bends and restrictive pipe fittings are prohibited. Vents and headers shall be so installed as to minimize stresses on safety relief valves and their mounting nozzles.
              (5) When vent discharge risers are installed, they shall be so located as to protect against physical damage and be fitted with loose raincaps.
              (6) When vent discharge risers are installed and their installation in accordance with the provisions of this paragraph results in restrictions in the operation of the barge due to navigation clearances, the vents may be designed so as to be collapsible when passing under such low clearance obstacles.
              (c) Repairs involving welding or burning. (1) Repairs involving welding or burning shall not be undertaken on the cargo tanks or piping while cargo in either the liquid or vapor state is present therein.
              (2) Repairs involving welding or burning on parts of the barge other than cargo tanks or piping may be undertaken provided positive pressure is maintained in the tanks or the tanks have been vented or washed internally.
              (d) Respiratory equipment. (1) At least one approved self-contained breathing apparatus shall be available in a readily accessible location off the barge at all times during the cargo transfer operations. This equipment shall not be considered to be part of the barge equipment, and the barge shall not be required to carry this equipment en route.
              (2) The approved self-contained breathing apparatus, masks, and all respiratory protective devices shall be of types suitable for starting and operating at the temperatures encountered, and shall be maintained in good operating condition.
              (3) Personnel involved in the cargo transfer operations shall be adequately trained in the use of the respiratory equipment.
              (e) Filling densities and container design pressure. For compressed gases transported at or near ambient temperatures, the maximum filling densities and minimum design pressure of container as indicated in Table 151.50-30(e) shall apply. Deviations from the tabulated values shall be submitted to the Commandant for approval. Where cargo is to be carried at temperatures below ambient, the tank shall be designed in accordance with § 151.15-3(b)(3) and the maximum amount of cargo shall be in accordance with § 151.45-6(b).

                Table 151.50-30(e)—Filling Densities and Container Design Pressures

                  Kind of gas
                  Maximum permitted filling density (percent by weight, see § 151.03-21)
                  Uninsulated tanks
                  Insulated tanks
                  Minimum design pressure of tank (pounds per square inch gauge)
                  Uninsulated tanks
                  Insulated tanks

                  Ammonia, anhydrous
                  57
                  58
                  250
                  215

                  Chlorine
                  125
                  125
                  300
                  300

                  Dichlorodifluoromethane
                  123
                  125
                  147
                  127

                  Dimethylamine
                  61
                  62
                  46
                  36

                  Methyl chloride
                  85
                  87
                  131
                  112

                  Monochlorodi-fluoromethane
                  110
                  113
                  243
                  211

                  Vinyl chloride
                  86
                  87
                  81
                  67

              (f) The shell and head thickness of liquefied compressed cargo tanks shall not be less than five-sixteenths inch.

              (g) The special requirements for ammonia (anhydrous) in § 151.50-32, for argon in § 151.50-36, for chlorine in § 151.50-31, for nitrogen in § 151.50-36, and for vinyl chloride in § 151.50-34 also apply to the carriage of those gases.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-100, 54 FR 40040, Sept. 29, 1989]

              § 151.50-31
              Chlorine.
              (a) Chlorine barges. Subparts 98.03 and 98.20 of Part 98 of this chapter have been revoked. However, chlorine barges that were certified in accordance with the requirements of subpart 98.20 of part 98 of this chapter and having hulls modified, if necessary, to comply with §§ 98.03-5(c) and 98.03-25(c) of this chapter, shall be considered as complying with this part.
              (b) Design and construction of cargo tanks. (1) The cargo tanks shall meet the requirements of Class I pressure vessels.
              (2) Tanks shall be designed for a pressure of not less than 300 pounds per square inch gauge. For the maximum allowable working pressure of tanks in service, see paragraph (q) of this section.
              (3) Each tank shall be provided with one or more 24-inch inside diameter manhole, fitted with a cover located above the maximum liquid level and as close as possible to the top of the tank. There shall be no other openings in the tank.
              (c) Tanks may be installed “on deck” or “under deck” with the tank protruding above deck. If a portion of the tank extends above the weatherdeck, provision shall be made to maintain the weathertightness on the deck. All tanks shall be installed with the manhole opening located above the weatherdeck. Hopper type barges operating on protected inland waters may have tanks located in the hopper space.
              (d) All valves, flanges, fittings and accessory equipment shall be of a type suitable for use with chlorine and shall be made of metal, corrosion-resistant to chlorine in either the gas or liquid phase. Cast or malleable iron shall not be used. Valves, flanges, and flanged joints shall be 300 pounds A.N.S.I. standard minimum with tongue and groove or raised face. Joints shall be fitted with sheet lead or other suitable gasket material. Welded fittings shall be used wherever possible and the number of pipe joints held to a minimum. Threaded joints in cargo lines and vapor lines shall not be used in sizes above 1 inch internal diameter. Welded “hammerlock” unions or other unions approved by the Commandant may be used at terminal points of fixed barge piping.
              (e) Each tank shall be provided with liquid and vapor connections fitted with manually operated shutoff valves and with safety relief valves. All valves shall be bolted to the cover or covers specified in paragraph (b)(3) of this section and shall be protected against mechanical damage by a suitable protective metal housing. A drain connection shall be provided from the protective housing.
              (f) All liquid and vapor connections, except safety relief valves, shall be fitted with automatic excess flow valves, which shall be located on the inside of the tank. Bypass openings are not permitted in excess flow valves.
              (g) Chlorine barge cargo piping shall not be fitted with the nonreturn valves specified by § 151.20-20(b).
              (h) Liquid level gauging devices of any type are prohibited on chlorine tanks.
              (i) A pressure gauge shall be attached to the vapor shutoff valve or vapor line so as to indicate the pressure in the tank at all times during loading and unloading.
              (j) Piping including connections between tank valves and fixed barge piping, shall be of a thickness of not less than Schedule 80.
              (k) In multiple tank installations the tanks shall not be interconnected by piping or manifolds which may contain liquid chlorine. Manifolding of vapor lines of individual tanks into a common header for connection to shore is permitted. More than one cargo tank may be filled or discharged at a time, provided each tank is filled from or discharged to shore tanks through separate lines.
              (l) Connections between fixed barge piping and shore piping shall be fabricated from one of the following:
              (1) Schedule 80 seamless pipe, having flexible metallic joints.

              (2) Corrosion-resistant metallic pipe (equivalent to Schedule 80) not subject to deterioration by chlorine, having flexible metallic joints.

              (3) Flexible metallic hose acceptable to the Commandant. If paragraphs (k)(1) or (2) of this section are used, the flexible metallic joints shall meet the requirements for cargo hose. See § 151.04-5(h).
              (m) Safety relief valves shall discharge into the protective housing surrounding the valves. Suitable provisions shall be made to vent the housing. The arrangement shall be such as to minimize the hazard of escaping vapors.
              (n) Cargo transfer operations. (1) The amount of chlorine loaded into each cargo tank shall be determined by weight. Draft marks shall not be used as a means of weighing. Any chlorine vapors vented during the filling operation shall be disregarded when calculating the maximum amount of chlorine to be loaded into the cargo tanks.
              (2) Prior to the start of filling operations, care shall be exercised to insure that the cargo tanks are empty, dry, and free from foreign matter.
              (3) After the filling operation is completed, the vapor in each cargo tank shall be analyzed to determine the percentage of gaseous chlorine in the vapor space. If it should contain less than 80 percent chlorine by volume, vapors shall be withdrawn through the vent or vapor line until the vapor in the cargo tanks contains at least 80 percent chlorine by volume.
              (4) After filling connections are removed, upon completion of the loading of a cargo tank, all connections at the tank shall be tested for leakage of chlorine by the aqua ammonia method.
              (5) The chlorine in the cargo tanks shall be discharged by the pressure differential method. If the vapor pressure of the chlorine is not sufficient to force the liquid out of the tank, compressed air, or other nonreactive gas, may be used to secure the desired rate of discharge, provided the air or gas is oil-free and thoroughly dried by passing it over activated aluminum oxide, silica gel, or other acceptable drying agent, and provided the supply pressure is limited to 75 percent of maximum allowable pressure of chlorine tanks.
              (6) After completion of cargo transfer, any liquid chlorine in the cargo piping shall be removed and cargo transfer piping shall be disconnected at the cargo tanks. After disconnecting the cargo piping, both ends of the line shall be closed and all inlet and outlet valves on the tank shall be plugged or fitted with blind flanges.
              (o) During cargo transfer, every person on the barge shall carry on his person a respiratory protective device which will protect the wearer against chlorine vapors and will provide respiratory protection for emergency escape from a contaminated area resulting from cargo leakage. This respiratory protective equipment shall be of such size and weight that the person wearing it will not be restricted in movement or in the wearing of a lifesaving device.
              (p) During each internal inspection, each cargo tank must be tested hydrostatically to 11/2 times the maximum allowable pressure as determined by the safety relief valve setting.
              (q) During each internal inspection, each cargo tank excess flow valve and safety relief valve must be inspected and tested in accordance with paragraphs (g) and (i) of § 151.04-5 of this chapter.
              (r) When periodic inspection indicates that a cargo tank has deteriorated in service, the maximum allowable pressure shall be recalculated, using the minimum thickness found by actual measurement. The recalculated maximum allowable pressure shall be not less than 275 pounds per square inch gauge. If the recalculated maximum allowable pressure is less than 275 pounds per square inch gauge, the cargo tanks shall be withdrawn from service.
              (s) The following substances shall not be carried as stores on board barges transporting chlorine in bulk: hydrogen, methane, liquefied petroleum gases, coal gas, acetylene, ammonia, turpentine, compounds containing metallic powders, finely divided metals or finely divided organic materials.
              (t) The requirements of § 151.50-30 for compressed gases are also applicable to the shipment of chlorine.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 85-061, 54 FR 50966, Dec. 11, 1989; CGD 85-061, 55 FR 41918, Oct. 16, 1990; USCG-2014-0688, 79 FR 58284, Sept. 29, 2014]

              § 151.50-32
              Ammonia, anhydrous.
              (a) The anhydrous ammonia tanks may be installed in the bulk liquid cargo tanks provided the liquid surrounding the enclosed anhydrous ammonia tanks complies with the following chemical and physical properties:
              (1) Boiling point above 125 °F atmospheric pressure.
              (2) Inert to ammonia at 100 °F at atmospheric pressure.
              (3) Noncorrosive in the liquid and vapor phase to the ammonia tanks and piping.
              (b) Copper, copper alloys, and copper bearing alloys shall not be used as materials of construction for tanks, pipelines, valves, fittings, and other items of equipment that may come in contact with anhydrous ammonia liquid or vapor.
              (c) Valves, flanges and pipe fittings shall be of the tongue and groove or raised-face type, fitted with suitable gasket material. Welded fittings shall be used wherever possible and the number of pipe joints shall be held to a minimum. Threaded joints are not permitted for pipe diameters exceeding 2 inches. Brazed joints are prohibited.
              (d) All enclosed spaces containing cargo tanks fitted with bottom outlet connections shall be provided with mechanical ventilation of sufficient capacity to assure a change of air every 3 minutes.
              (e) Each cargo tank shall be electrically grounded to the hull.
              (f) When transferring cargo, a hose shall be connected to a water supply so that if leakage of anhydrous ammonia occurs the vapor may be dispersed by the use of water fog. This requirement can be met by facilities provided from shore.
              (g) During cargo transfer operations, every person on the vessel shall carry on his person or have close at hand at all times a canister mask approved for ammonia or each person shall carry on his person a respiratory protective device which will protect the wearer against ammonia vapors and will provide respiratory protection for emergency escape from a contaminated area resulting from cargo leakage. This respiratory protective equipment shall be of such size and weight that the person wearing it will not be restricted in movement or in the wearing of a lifesaving device.
              (h) [Reserved]
              (i) The requirements of § 151.50-30 for compressed gases are also applicable to the shipment of anhydrous ammonia.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 85-061, 54 FR 50966, Dec. 11, 1989]

              § 151.50-34
              Vinyl chloride (vinyl chloride monomer).
              (a) Copper, aluminum, magnesium, mercury, silver, and their alloys shall not be used as materials of construction for tanks, pipelines, valves, fittings, and other items of equipment that may come in contact with vinyl chloride liquid or vapor.
              (b) Valves, flanges, and pipe fittings shall be of the tongue and groove or raised-face type, fitted with suitable gasket material. Welded fittings shall be used wherever possible and the number of pipe joints shall be held to a minimum. Threaded joints are not permitted for pipe diameters exceeding 2 inches. Brazed joints are prohibited.
              (c) Each cargo tank shall be electrically grounded to the hull.
              (d) The vessel shall be electrically bonded to the shore piping prior to connecting the cargo hose. This electrical bonding shall be maintained until after the cargo hose has been disconnected and any spillage has been removed.
              (e) To the extent he deems it necessary, the Officer in Charge, Marine Inspection, may require that sufficient insulation shall be removed from insulated tanks at least once in each 8 calendar years to permit spot external examination of the tanks and insulation in accordance with § 151.04-5(c).
              (f) The requirements of § 151.50-30 for compressed gases are also applicable to the shipment of vinyl chloride.
              (g) The person in charge of cargo transfer shall ensure that:
              (1) Cargo vapors are returned to the cargo tank or shore disposition for reclamation or destruction during cargo transfer operations;

              (2) Continuous monitoring for vinyl chloride vapor leaks is conducted aboard a tank barge undergoing vinyl chloride transfer operations. Fixed or portable instrumentation may be utilized to ensure that personnel are not exposed to vinyl chloride vapor concentrations in excess of 1 ppm averaged over any eight hour period of 5 ppm averaged over any period not exceeding 15 minutes. The method of monitoring and measurement shall have an accuracy (with a confidence level of 95 percent) of not less than plus or minus 50 percent from 0.25 through 0.5 ppm, plus or minus 35 percent from over 0.5 ppm through 1.0 ppm, and plus or minus 25 percent over 1.0 ppm;
              (3) Cargo transfer operation is discontinued or corrective action is initiated by the person in charge to minimize exposure to personnel whenever a vinyl chloride vapor concentration in excess of 1 ppm is detected. If the vinyl chloride vapor concentration exceeds 5 ppm for over 15 minutes, action to reduce the leak can be continued only if the respiratory protection requirements of 29 CFR 1910.1017 are met by all personnel in the area of the leak;
              (4) Those portions of cargo lines which will be open to the atmosphere after piping is disconnected are free of vinyl chloride liquid and that the vinyl chloride vapor concentration in the area of the cargo piping disconnect points is not greater than 5 ppm;
              (5) Any restricted gauge fitted on a tank containing vinyl chloride is effectively out of service by locking or sealing the device so that it cannot be used; and
              (6) A restricted gauge is not to be used as a “check” on the required closed gauge, nor as a means or sampling.
              (h) The words “CANCER—SUSPECT AGENT” must be added to the warning signs required by 46 CFR 151.45-2(e).
              (i) Signs bearing the legend:
              cancer—suspect agent in this area
              protective equipment required
              authorized personnel only
              must be posted whenever hazardous operations, such as tank cleaning, are in progress.
              (j) A tank barge undergoing cargo transfer operations must be designated a “regulated area” having access limited to authorized persons and requiring a daily roster of authorized persons who may board the barge.
              (k) Employees engaged in hazardous operations, such as tank cleaning, must be provided, and be required to wear and use respiratory protection in accordance with the provisions of 29 CFR 1910.1017 and protective garments, provided clean and dry for each use, to prevent skin contact with liquid vinyl chloride.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 74-167R, 40 FR 17026, Apr. 16, 1975; CGD 88-100, 54 FR 40040, Sept. 29, 1989]

              § 151.50-36
              Argon or nitrogen.
              (a) A cargo tank that contains argon or nitrogen and that has a maximum allowable working pressure of 172 kPa (25 psig) or greater must have one of the following arrangements:
              (1) A refrigeration system that keeps the tank pressure below the safety relief valve operating pressure when ambient temperatures are 46 °C (115 °F) air and 32 °C (90 °F) water.
              (2) A relief valve or pressure control valve that maintains the tank pressure below the setting of the tank's required safety relief valve in ambient temperatures of 46 °C (115 °F) air and 32 °C (90 °F) water.
              (b) A cargo tank with a maximum allowable working pressure of less than 172 kPa (25 psig) is approved by the Commandant (CG-ENG) on a case by case basis.
              (c) Section 151.50-30 also applies to the carriage of argon or nitrogen.
              [CGD 88-100, 54 FR 40040, Sept. 29, 1989]

              § 151.50-40
              Additional requirements for carbon disulfide (carbon bisulfide) and ethyl ether.
              (a) The provisions of this section are applicable if specifically referenced in the Special Requirements column of Table 151.05.
              (b) Cargo tanks shall be electrically bonded to the hull of the vessel. A vessel shall be electrically bonded to the shore piping prior to connecting the cargo hose. This electrical bonding shall be maintained until after the cargo hose has been disconnected and any spillage has been removed.
              (c) Pumps may be used for discharging cargo: Provided, That they are the vertical submerged type designed to avoid liquid pressure against the shaft gland and are suitable for use with the cargo.
              (d) Provisions shall be made to maintain an inert gas padding in the cargo tank during loading, unloading and during transit.
              (e) Provisions shall be made to prevent any leakage being washed into the waterways at the loading and unloading points.

              (f) The special requirements of § 151.50-41 for carbon disulfide (carbon bisulfide) and § 151.50-42 for ethyl ether shall also be observed.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-100, 54 FR 40029, Sept. 29, 1989]

              § 151.50-41
              Carbon disulfide (carbon bisulfide).
              (a) All openings shall be in the top of the tank.
              (b) Loading lines shall terminate near the bottom of the tank.
              (c) A standard ullage opening shall be provided for secondary and emergency sounding.
              (d) If a cargo discharge pump is used, it shall be inserted through a cylindrical well extending from the tank top to a point near the tank bottom. A blanket of water shall be formed in this well before attempting pump removal.
              (e) Water or inert gas displacement may be used for discharging cargo provided the cargo system is designed for the expected pressure and temperature. This method for discharging may be used with pressure type tanks only.
              (f) Adequate natural ventilation shall be provided for the voids around the cargo tanks while the vessel is under way. During loading and unloading, forced ventilation shall be used. The forced ventilation shall be of sufficient capacity to provide a complete change of air within each void space every 5 minutes. The ventilating fan shall be of nonsparking construction.

              (g) Because of its low ignition temperature and the close clearances required to arrest its flame propagation, carbon disulfide (carbon bisulfide) requires safeguards beyond those required for any electrical hazard groups.

              (h) The requirements of § 151.50-40 are also applicable to the shipment of carbon disulfide (carbon bisulfide).
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-100, 54 FR 40040, Sept. 29, 1989]

              § 151.50-42
              Ethyl ether.
              (a)(1) Gravity tanks shall be designed and tested to meet the rules of the American Bureau of Shipping for a head of water at least 8 feet above the tank top or the highest level the lading may rise, whichever is greater. All openings shall be in the top of the tank.
              (2) Pressure vessel type tanks shall be designed for the maximum pressure to which they may be subjected when pressure is used to discharge the cargo, but in no case shall the design pressure be less than 50 pounds per square inch gauge. All openings shall be in the top of the tank.
              (b) Adequate natural ventilation shall be provided for the voids around the cargo tanks while the vessel is underway. If a power ventilation system is installed, all blowers shall be of nonsparking construction. Power driven ventilation equipment shall not be located in the void spaces surrounding the cargo tanks.
              (c) Pressure relief valve settings shall not be less than 3 pounds per square inch gauge for gravity tanks. For pressure vessels, the relief valve setting shall not exceed the design pressure of the tank.
              (d) Inert gas displacement may be used for discharging cargo from pressure vessel tanks provided the cargo system is designed for the expected pressure and the discharge pressure does not exceed 50 pounds per square inch gauge or the design pressure of the tank, whichever is less.

              (e) No electrical equipment except for approved lighting fixtures shall be installed in enclosed spaces adjacent to the cargo tanks. Lighting fixtures must be approved for use in Class I, Group C, hazardous locations. The installation of electrical equipment on the weather deck shall comply with the requirements of part 111, subpart 111.105 of this chapter.

              (f) Copper, silver, mercury and magnesium or other acetylide forming metals and their alloys shall not be used as materials of construction for tanks, pipelines, valves, fittings and other items of equipment that may come in contact with the cargo vapor or liquid.
              (g) Precautions shall be taken to prevent the contamination of ethyl ether by strong oxidizing agents.
              (h) The requirements of § 151.50-40 are also applicable to the shipment of ethyl ether.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-100, 54 FR 40040, Sept. 29, 1989]

              § 151.50-50
              Elemental phosphorus in water.
              (a) Tanks shall be designed and tested for a head equivalent to the design lading of phosphorus and its water blanket extended to 8 feet above the tank top. In addition, tank design calculations shall demonstrate that the tank can withstand, without rupture, a single loading to the highest level to which the water blanket may rise, if that exceeds 8 feet. Tanks shall not be less than 5/16-inch thick.
              (b) When a water displacement method of discharge is used, pressure vessel type cargo tanks, designed and tested in accordance with Subchapter F of this chapter shall be employed. Such tanks shall be designed for the maximum pressure to which they may be subjected when water pressure is used to discharge the cargo.
              (c) Each cargo tank shall be fitted with an approved pressure vacuum relief valve set to discharge at a pressure not exceeding 2 pounds per square inch. When transferring cargo, the vent discharge shall lead overboard above the waterline. When pressure vessel type tanks are used, each tank shall be fitted with a relief valve of suitable size.
              (d) Sufficient outage shall be provided to prevent the tank from being liquid full at any time, but in no case shall the outage be less than 1 percent. When pressure vessel type tanks are used, outage need not be provided.
              (e) The use of compressed air to discharge cargo is prohibited.
              (f) Cargo shall be loaded at a temperature not exceeding 140 °F, and then cooled until the water above the cargo has a temperature not exceeding 105 °F prior to the movement of the vessel. Upon presentation of satisfactory proof that procedures followed will provide adequate safety in transportation and handling, the Commandant may authorize movement of the vessel following cooling of the water above the cargo to a temperature exceeding 105 °F.
              (g) Coils in which steam or hot water is circulated to heat the cargo so that it may be pumped shall be located outside the cargo tanks.
              (h) A fixed ballast piping system (including a power driven pump of ample capacity), or other means acceptable to the Commandant shall be installed so that any void space surrounding the tanks may be flooded.
              (i) All openings shall be in the top of the tank and shall be fitted with bolted cover plates and gaskets resistant to the attack of phosphorus pentoxide.
              (j) All enclosed compartments containing cargo tanks shall be provided with effective means of ventilation.
              (k) Cargo lines shall be traced with steam piping and secured thereto by lagging to prevent solidification of cargo during transfer operations.
              (l) During cargo transfer, a water hose shall be connected to a water supply ready for immediate use, and any spillage of phosphorus shall be immediately washed down. This requirement can be met by facilities provided from shore.
              (m) At least two fresh air masks or self-contained breathing apparatus shall be stowed on board the vessel at all times for use of personnel entering the tanks or adjacent spaces.
              (n) Authorization from the Commandant (CG-ENG) shall be obtained to transport lading other than phosphorus in the cargo tanks or to have on board any other cargo when phosphorus is laden in the tanks.
              (o) Mechanical ventilation of sufficient capacity to insure a change of air within the cargo tanks every 3 minutes shall be provided during the inspection and maintenance of the cargo tanks.

              (p) Cargo tanks shall be electrically bonded to the hull of the barge. A vessel shall be electrically bonded to the shore piping prior to connecting the cargo hose. This electrical bonding shall be maintained until after the cargo hose has been disconnected.
              [CGFR 70-10, 35 FR 3714, Feb. 24, 1970, as amended by CGD 82-063b, 48 FR 4781, Feb. 3, 1983]

              § 151.50-55
              Sulfur (molten).
              (a) Ventilation (cargo tank):

              (1) Cargo tank ventilation shall be provided to maintain the concentration of H2S below one-half of its lower explosive limit throughout the cargo tank vapor space for all conditions of carriage; i.e., below 1.85 percent by volume.
              (2) Where mechanical ventilation systems are used for maintaining low gas concentrations in cargo tanks, an alarm system shall be provided to give warning if the system fails.
              (3) Connections shall be provided to enable sampling of the atmosphere over the cargo in each cargo tank for analysis.
              (4) The ventilation system shall be designed and arranged to preclude the depositing of sulfur within the system.
              (b) Void spaces:
              (1) Openings to void spaces adjacent to cargo tanks shall be designed and fitted to prevent the entry of water, sulfur or cargo vapors.
              (2) Connections shall be provided to enable sampling and analyzing vapors in void spaces.
              (c) Temperature controls shall be provided in accordance with § 151.20-10 and applicable sections of Subpart 151.40 of this part. Heat transfer media shall be steam, and alternate media will require specific approval of the Commandant.
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970]

              § 151.50-60
              Benzene.
              The person in charge of a Coast Guard inspected barge must ensure that the provisions of part 197, subpart C, of this chapter are applied.
              [CGD 88-040, 56 FR 65006, Dec. 13, 1991]

              § 151.50-70
              Cargoes requiring inhibition or stabilization.
              When table 151.05 refers to this section, that cargo must be—
              (a) Inhibited; or
              (b) Stabilized.
              [CGD 88-100, 54 FR 40040, Sept. 29, 1989]

              § 151.50-73
              Chemical protective clothing.
              When table 151.05 refers to this section, the following apply:
              (a) The person in charge of cargo handling operations shall ensure that the following chemical protective clothing constructed of materials resistant to permeation by the cargo being handled is worn by all personnel engaged in an operation listed in paragraph (b) of this section:
              (1) Splash protective eyewear.
              (2) Long-sleeved gloves.
              (3) Boots or shoe covers.
              (4) Coveralls or lab aprons.

                Note:
                “Guidelines for the Selection of Chemical Protective Clothing”, Third Edition, 1987, available from the American Conference of Governmental Industrial Hygienists, 1330 Kemper Meadow Drive, Cincinnati, OH 45240-1634, provides information on the proper clothing for the cargo being handled.

              (b) The section applies during the following operations:
              (1) Sampling cargo.
              (2) Transferring cargo.
              (3) Making or breaking cargo hose connections.
              (4) Gauging a cargo tank, unless gauging is by closed system.
              (5) Opening cargo tanks.
              (c) Coveralls or lab aprons may be replaced by splash suits or aprons constructed of light weight or disposable materials if, in the judgment of the person in charge of cargo handling operations,
              (1) Contact with the cargo is likely to occur only infrequently and accidentally; and
              (2) The splash suit or apron is disposed of immediately after contamination.
              (d) Splash protective eyewear must be tight-fitting chemical-splash goggles, face shields, or similar items intended specifically for eye protection from chemical splashing or spraying.

              (e) The person in charge of cargo handling operations shall ensure that each person in the vicinity of an operation listed in the paragraph (b) of this section or in the vicinity of tanks, piping, or pumps being used to transfer the cargo wears splash protective eyewear under paragraph (d) of this section.
              [CGD 88-100, 54 FR 40040, Sept. 29, 1989, as amended by USCG-1999-6216, 64 FR 53227, Oct. 1, 1999]

              § 151.50-74
              Ethylidene norbornene.
              When Table 151.05 refers to this section, the following apply:
              (a) 151.50-5 (g) and (h)
              (b) Rubber hoses or fittings may not be used in transfer operations.
              [CGD 80-001, 46 FR 63279, Dec. 31, 1981]

              § 151.50-75
              Ferric chloride solution.
              A containment system (cargo tank piping system, venting system, and gauging system) carrying this solution must be lined with rubber, corrosion resistant plastic, or a material approved by the Commandant (CG-ENG).
              [CGD 80-001, 46 FR 63279, Dec. 31, 1981, as amended by CGD 82-063b, 48 FR 4781, Feb. 3, 1983; CGD 88-100, 54 FR 40041, Sept. 29, 1989; 55 FR 17276, Apr. 24, 1990]

              § 151.50-76
              Hydrochloric acid, spent (NTE 15%).
              (a)(1) Gravity type cargo tanks must be designed and tested to meet the rules of the American Bureau of Shipping for a head of water at least 8 feet above the tank top or the highest level the lading may rise, whichever is greater. The plate thickness of any part of the tank may not be less than three-eighths inch. A shell plating of a barge may not be on the boundary of any part of the cargo tank.
              (2) Gravity tank vents must:
              (i) Terminate above the weatherdeck, clear of all obstructions and away from any from any source of ignition; and
              (ii) Be fitted with a single flame screen or two fitted flame screens as described in § 151.03-25. Neither a shut-off valve nor a frangible disk may be fitted in the vent lines.
              (b) Openings in the tanks are prohibited below deck, except for access openings used for inspection and maintenance of tanks, or unless otherwise specifically approved by the Commandant (CG-ENG). Openings must be fitted with bolted cover plates and acid-resistant gaskets.
              (c) Where special arrangements are approved by the Commandant (CG-ENG) to permit a pump suction to be led from the bottom of the tank, the filling and discharge lines must be fitted with shutoff valves located above the weatherdeck or operable from it.
              (d) The outage may not be less than 1 percent.
              (e) An enclosed compartment containing, or a compartment adjacent to, a cargo tank:
              (1) May have no electrical equipment that does not meet or exceed class I-B electrical requirements; and
              (2) Must have at least one gooseneck vent of 2.5 inch diameter or greater. The structural arrangement of the compartment must provide for the free passage of air and gases to the vent or vents.
              (f) No lights may be used during the cargo transfer operations, except installed electric or portable battery lights. Smoking is prohibited and the person in charge of cargo transfer shall ensure that “No Smoking” signs are displayed during cargo transfer operations.
              (g) Tanks approved for the transportation of acid cargoes subject to this section may not be used for the transportation of any other commodity, except upon authorization by the Commandant (CG-ENG).
              (h) Each cargo tank must be examined internally at least once in every 4 years. If the lining of the cargo tank has deteriorated in service or is not in place, the Marine Inspector may require the tank to be tested by such nondestructive means as he may consider necessary to determine its condition.
              [CGD 80-001, 46 FR 63279, Dec. 31, 1981, as amended by CGD 82-063b, 48 FR 4781, Feb. 3, 1983]

              § 151.50-77
              Fluorosilicic acid (30% or less) (hydrofluorosilicic acid).
              (a) Hydrofluorosilicic acid must be carried in gravity or pressure type cargo tanks independent of the vessel's structure. The tanks must be lined with rubber or other equally suitable material approved by the Commandant (CG-ENG). See § 151.15-3(f)(2).

              (b) Notwithstanding the provisions of § 151.50-20(b)(3), no compressed air may be used to discharge hydrofluorosilicic acid from gravity type cargo tanks unless:
              (1) The tanks are of cylindrical shape with dished heads, and
              (2) The air pressure does not exceed:
              (i) The design pressure of the tank, and
              (ii) 10 pounds per square inch gauge. The tanks must be fitted with pressure relief devices.
              (c) During cargo transfer, a water hose must be connected to a water supply and be ready for immediate use. Any leakage or spillage of acid must be immediately washed down. This requirement can be met by facilities provided from shore.
              [CGD 80-001, 46 FR 63279, Dec. 31, 1981, as amended by CGD 82-063b, 48 FR 4781, Feb. 3, 1983; CGD 92-100, 59 FR 17028, Apr. 11, 1994]

              § 151.50-79
              Methyl acetylene-propadiene mixture.
              (a) The composition of the methyl acetylene-propadiene mixture at loading must be within one of the following sets of composition limits:
              (1) Composition 1 is:
              (i) Maximum methyl acetylene to propadiene molar ratio of 3 to 1;
              (ii) Maximum combined concentration of methyl acetylene and propadiene of 65 mole percent;
              (iii) Minimum combined concentration of propane, butane, and isobutane of 24 mole percent, of which at least one-third (on a molar basis) must be butanes and one-third propane; and
              (iv) Maximum combined concentration of propylene and butadiene of 10 mole percent.
              (2) Composition 2 is:
              (i) Maximum methyl acetylene and propadiene combined concentration of 30 mole percent;
              (ii) Maximum methyl acetylene concentration of 20 mole percent;
              (iii) Maximum propadiene concentration of 20 mole percent;
              (iv) Maximum propylene concentration of 45 mole percent;
              (v) Maximum butadiene and butylenes combined concentration of 2 mole percent;
              (vi) Minimum saturated C4 hydrocarbon concentration of 4 mole percent; and
              (vii) Minimum propane concentration of 25 mole percent.
              (b) A barge carrying a methyl acetylene-propadiene mixture must have a refrigeration system that does not compress the cargo vapor or have a refrigeration system with the following features:
              (1) A vapor compressor that does not raise the temperature and pressure of the vapor above 60 °C (140 °F) and 1.72 MPa gauge (250 psig) during its operations, and that does not allow vapor to stagnate in the compressor while it continues to run.
              (2) At the discharge piping from each compressor stage or each cylinder in the same stage of a reciprocating compressor:
              (i) Two temperature actuated shutdown switches set to operate at 60 °C (140 °F) or less;
              (ii) A pressure actuated shutdown switch set to operate at 1.72 MPa gauge (250 psig) or less; and
              (iii) A safety relief valve set to relieve at 1.77 MPa gauge (256 psig) or less anywhere except into the compressor suction line.
              (c) The piping system, including the cargo refrigeration system, for tanks to be loaded with methyl acetylene-propadiene mixture must be completely separate from piping and refrigeration systems for other tanks. If the piping system for the tanks to be loaded with methyl acetylene-propadiene mixture is not independent, the required piping separation must be accomplished by the removal of spool pieces, valves or other pipe sections and the installation of blank flanges at these locations. The required separation applies to all liquid and vapor piping, liquid and vapor vent lines and any other possible connections, such as common inert gas supply lines.
              [CGD 80-001, 46 FR 63279, Dec. 31, 1981, as amended by USCG-2014-0688, 79 FR 58284, Sept. 29, 2014]

              § 151.50-80
              Nitric acid (70% or less).
              (a) Tanks, cargo piping, valves, fittings, and flanges (where exposed to the acid) must be lined with nitric acid resistant rubber or fabricated from nitric acid resistant stainless steel. See § 151.15-3(f)(2).

              (b) During cargo transfer, a water hose must be connected to a water supply, ready for immediate use. Any leakage or spillage of acid must be immediately washed down. This requirement can be met by facilities provided from shore.
              (c) Nitric acid contaminated by other chemicals, oils, solvents, etc. may not be transported in bulk without an authorization from the Commandant (CG-ENG).
              [CGD 80-001, 46 FR 63280, Dec. 31, 1981, as amended by CGD 82-063b, 48 FR 4781, Feb. 3, 1983; CGD 88-100, 54 FR 40041, Sept. 29, 1989]

              § 151.50-81
              Special operating requirements for heat sensitive cargoes.
              When table 151.05 refers to this section, the following apply to the cargo:
              (a) Must not be carried in a tank equipped with heating coils unless the heating supply to the coils is disconnected.
              (b) Must not be carried in a tank adjacent to another tank containing an elevated temperature cargo.
              (c) Must not be carried in a deck tank.
              [CGD 80-001, 46 FR 63280, Dec. 31, 1981, as amended by CGD 88-100, 54 FR 40041, Sept. 29, 1989]

              § 151.50-84
              Sulfur dioxide.
              (a) Sulfur dioxide that is transported under the provisions of this part may not contain more than 100 ppm of water.
              (b) Cargo piping must be at least Schedule 40 pipe.
              (c) Flanges must be 150 lb. A.N.S.I. Standard minimum with tongue and groove or raised face.
              (d) A cargo tank must:
              (1) Meet the requirements of a Class I welded pressure vessel;
              (2) Be designed for a maximum allowable working pressure of at least 125 psig;
              (3) Be hydrostatically tested every two years to at least 188 psig;
              (4) Be provided with one or more manholes that are fitted with a cover sized not less than 15 inches by 23 inches or 13 inches nominal diameter, located above the maximum liquid level, and as close as possible to the top of the tank;
              (5) Have no openings other than those required in paragraph (d)(4) of this section;
              (6) Have no liquid level gauges other than closed or indirect gauges;
              (7) Have all valves and the closed gauge that is required by Table 151.05 bolted to the cover or covers that are required in paragraph (d)(4) of this section;
              (8) Have a metal housing that is fitted with a drain and vent connection protecting all valves and the closed gauge within this housing against mechanical damage;
              (9) Have all safety relief valves discharging into the protective housing;
              (10) Not be interconnected with another cargo tank by piping or manifold that carriers cargo liquid, except vapor lines connected to a common header, and
              (11) Have an excess flow valve that is located on the inside of the tank for every liquid and vapor connection, except the safety relief valve;
              (12) Have no bypass opening on any excess flow valve.
              (e) Cargo transfer operations:
              (1) May not be conducted with more than one cargo tank at a time unless each tank is filled from or discharged to shore tanks through separate lines;
              (2) Must be conducted with connections between fixed barge piping and shore piping of either Schedule 40 pipe having flexible metallic joints that meet § 151.04-5(h) or of flexible metallic hose that is acceptable to the Commandant (CG-ENG);
              (3) From barge to shore must be by pressurization with an oil free, non-reactive gas that has a maximum of 100 ppm moisture;
              (4) Must be conducted with vapor return to shore connections that ensure that all vapor is returned to shore; and
              (5) Must be conducted with every person on the barge carrying a respiratory protective device that protects the wearer against sulfur dioxide vapors and provides respiratory protection for emergency escape from a contaminated area that results from cargo leakage.
              (f) Respiratory protective equipment must be of a size and weight that allows unrestricted movement and wearing of a lifesaving device.

              (g) After the completion of cargo transfer, all liquid sulfur dioxide in the cargo piping must be removed and cargo transfer piping must be disconnected at the cargo tanks. After the cargo piping is disconnected, both ends of the line must be plugged or fitted with blind flanges.
              [CGD 80-001, 46 FR 63280, Dec. 31, 1981, as amended by CGD 82-063b, 48 FR 4781, Feb. 3, 1983; CGD 88-100, 54 FR 40041, Sept. 29, 1989; 55 FR 17276, Apr. 24, 1990; USCG-2014-0688, 79 FR 58284, Sept. 29, 2014]

              § 151.50-86
              Alkyl (C7-C9) nitrates.
              (a) The carriage temperature of octyl nitrates must be maintained below 100 °C (212 °F) in order to prevent the occurrence of a self-sustaining exothermic decomposition reaction.
              (b) Octyl nitrates may not be carried in a deck tank unless the tank has a combination of insulation and a water deluge system sufficient to maintain the tank's cargo temperature below 100 °C (212 °F) and the cargo temperature rise at or below 1.5 °C(2.7 °F)/hour, for a fire of 650 °C (1200 °F).
              [CGD 88-100, 54 FR 40040, Sept. 29, 1989; CGD 92-100, 59 FR 17028, Apr. 11, 1994]

            Subpart 151.55—Special Requirements for Materials of Construction

              § 151.55-1
              General.
              (a) This section provides special requirements for the materials of construction of equipment that may come into contact with various cargoes. Table 151.05 contains specific requirements for various cargoes.
              (b) Copper, copper alloys, zinc, and aluminum shall not be used as materials of construction for tanks, pipelines, valves, fittings, and other items of equipment that may come in contact with the cargo liquid or vapor. (Equivalent to § 151.56-1(a),(b), and (c).)
              (c) Copper, copper alloys, zinc, galvanized steel, and mercury shall not be used as materials of construction for tanks, pipelines, valves, fittings, and other items of equipment that may come in contact with the cargo liquid or vapor. (Equivalent to § 151.56-1(b),(c), and (g).)
              (d) Aluminum, magnesium, zinc, and lithium shall not be used as materials of construction for tanks, pipelines, valves, fittings, and other items of equipment that may come in contact with the cargo liquid or vapor. (Equivalent to § 151.56-1(a),(c), and (d).)
              (e) Copper and copper bearing alloys shall not be used as materials of construction for tanks, pipelines, valves, fittings, and other items of equipment that may come in contact with the cargo liquid or vapor. (Equivalent to § 151.56-1(b).)
              (f) Aluminum or copper or alloys of either shall not be used as materials of construction for tanks, pipelines, valves, fittings, and other items of equipment that may come in contact with the cargo vapor or liquid. (Equivalent to § 151.56-1(a) and (b).)
              (g) Aluminum, stainless steel, or steel covered with a suitable protective lining or coating shall be used as materials of construction for tanks, pipelines, valves fittings, and other items of equipment that may come in contact with the cargo liquid or vapor. (Equivalent to § 151.58-1(a).)
              (h) Alkaline or acidic materials, such as caustic soda or sulfuric acid, should not be allowed to contaminate this cargo.
              (i) For concentrations of 98 percent or greater, aluminum or stainless steel shall be used as materials of construction. For concentrations of less than 98 percent, 304L or 316 stainless steel shall be used as materials of construction.
              (j) Zinc, alloys that have more than 10 percent zinc by weight, and aluminum may not be used as materials of construction for tanks, pipelines, valves, fittings, and other items of equipment that may come in contact with cargo liquid or vapor. (Equivalent to § 151.56-1(a) and (c).)
              [CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 73-275R, 41 FR 3087, Jan. 21, 1976; CGD 75-223, 42 FR 8378, Feb. 10, 1977; CGD 88-100, 54 FR 40041, Sept. 29, 1989]

            Subpart 151.56—Prohibited Materials of Construction

              § 151.56-1
              Prohibited materials.
              When one of the following paragraphs of this section is referenced in table 151.05, the materials listed in that paragraph may not be used in components that contact the cargo or its vapor:
              (a) Aluminum or aluminum alloys.

              (b) Copper or copper alloys.
              (c) Zinc, galvanized steel, or alloys having more than 10 percent zinc by weight.
              (d) Magnesium.
              (e) Lead.
              (f) Silver or silver alloys.
              (g) Mercury.
              [CGD 88-100, 54 FR 40041, Sept. 29, 1989]

            Subpart 151.58—Required Materials of Construction

              § 151.58-1
              Required materials.
              When one of the following paragraphs of this section is referenced in table 151.05, only those materials listed in that paragraph may be used in components that contact the cargo or its vapor:
              (a) Aluminum, stainless steel, or steel covered with a protective lining or coating. (See § 151.15-3(f)(2).)
              (b)-(c) [Reserved]
              (d) Solid austenitic stainless steel.
              (e) Stainless steel or steel covered with a suitable protective lining or coating. (See § 151.15-3(f)(2).)
              [CGD 88-100, 54 FR 40041, Sept. 29, 1989]

          PART 152 [RESERVED]

          Pt. 153
          PART 153—SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS

              Subpart A—General
              Sec.
              153.0
              Availability of materials.
              153.1
              Applicability.
              153.2
              Definitions and acronyms.
              153.3
              Right of appeal.
              153.4
              Incorporation by reference.
              153.7
              Ships built before December 27, 1977 and non-self-propelled ships built before July 1, 1983: Application.
              153.8
              Procedures for requesting an endorsed Certificate of Inspection.
              153.9
              Foreign flag vessel endorsement application.
              153.10
              Procedures for requesting alternatives and waivers; termination of waivers.
              153.12
              IMO Certificates for United States Ships.
              153.15
              Conditions under which the Coast Guard issues a Certificate of Inspection or Certificate of Compliance.
              153.16
              Requirements for foreign flag vessel permits.
              153.30
              Special area endorsement.
              153.40
              Determination of materials that are hazardous.

              Subpart B—Design and Equipment

                General Vessel Requirements
                153.190
                Stability requirements.
                153.201
                Openings to accommodation, service or control spaces.
                153.208
                Ballast equipment.
                153.209
                Bilge pumping systems.
                153.214
                Personnel emergency and safety equipment.
                153.215
                Safety equipment lockers.
                153.216
                Shower and eyewash fountains.
                153.217
                Access to enclosed spaces and dedicated ballast tanks.
                153.219
                Access to double bottom tanks serving as dedicated ballast tanks.

                Cargo Containment Systems
                153.230
                Type I system.
                153.231
                Type II system.
                153.232
                Type III system.
                153.233
                Separation of tanks from machinery, service and other spaces.
                153.234
                Fore and aft location.
                153.235
                Exceptions to cargo piping location restrictions.
                153.236
                Prohibited materials.
                153.238
                Required materials.
                153.239
                Use of cast iron.
                153.240
                Insulation.

                Cargo Tanks
                153.250
                Double-bottom and deep tanks as cargo tanks.
                153.251
                Independent cargo tanks.
                153.252
                Special requirement for an independent cargo tank.
                153.254
                Cargo tank access.
                153.256
                Trunks, domes, and openings of cargo tanks.
                153.266
                Tank linings.

                Piping Systems and Cargo Handling Equipment
                153.280
                Piping system design.
                153.281
                Piping to independent tanks.
                153.282
                Cargo filling lines.
                153.283
                Valving for cargo piping.
                153.284
                Characteristics of required quick closing valves.
                153.285
                Valving for cargo pump manifolds.
                153.292
                Separation of piping systems.
                153.294
                Marking of piping systems.
                153.296
                Emergency shutdown stations.
                153.297
                Emergency actuators at the point of cargo control.

                Cargo Handling Space Ventilation
                153.310
                Ventilation system type.
                153.312
                Ventilation system standards.

                153.314
                Ventilation of spaces not usually occupied.
                153.316
                Special cargo pumproom ventilation rate.

                Cargo Pumprooms
                153.330
                Access.
                153.332
                Hoisting arrangement.
                153.333
                Cargo pump discharge pressure gauge.
                153.334
                Bilge pumping systems.
                153.336
                Special cargo pump or pumproom requirements.

                Cargo Venting Systems
                153.350
                Location of B/3 vent discharges.
                153.351
                Location of 4 m vent discharges.
                153.352
                B/3 and 4 m venting system outlets.
                153.353
                High velocity vents.
                153.354
                Venting system inlet.
                153.355
                PV venting systems.
                153.358
                Venting system flow capacity.
                153.360
                Venting system restriction.
                153.361
                Arrangements for removal of valves from venting systems having multiple relief valves.
                153.362
                Venting system drain.
                153.364
                Venting system supports.
                153.365
                Liquid overpressurization protection.
                153.368
                Pressure-vacuum valves.
                153.370
                Minimum relief valve setting for ambient temperature cargo tanks.
                153.371
                Minimum relief valve setting for refrigerated cargo tanks.
                153.372
                Gauges and vapor return for cargo vapor pressures exceeding 100 kPa (approx. 14.7 psia).

                Cargo Gauging Systems
                153.400
                General requirements for gauges.
                153.404
                Standards for containment systems having required closed gauges.
                153.406
                Standards for containment systems having required restricted gauges.
                153.407
                Special requirements for sounding tube gauges.
                153.408
                Tank overflow control.
                153.409
                High level alarms.

                Cargo Temperature Control Systems
                153.430
                Heat transfer systems; general.
                153.432
                Cooling systems.
                153.434
                Heat transfer coils within a tank.
                153.436
                Heat transfer fluids: compatibility with cargo.
                153.438
                Cargo pressure or temperature alarms required.
                153.440
                Cargo temperature sensors.

                Special Requirements for Flammable or Combustible Cargoes
                153.460
                Fire protection systems.
                153.461
                Electrical bonding of independent tanks.
                153.462
                Static discharges from inert gas systems.
                153.463
                Vent system discharges.
                153.465
                Flammable vapor detector.
                153.466
                Electrical equipment.

                Design and Equipment for Pollution Control
                153.470
                System for discharge of NLS residue to the sea: Categories A, B, C, and D.
                153.480
                Stripping quantity for Category B and C NLS tanks on ships built after June 30, 1986: Categories B and C.
                153.481
                Stripping quantities and interim standards for Category B NLS tanks on ships built before July 1, 1986: Category B.
                153.482
                Stripping quantities and interim standards for Category C NLS tanks on ships built before July 1, 1986: Category C.
                153.483
                Restricted voyage waiver for Category B and C NLS tanks on ships built before July 1, 1986: Category B and C.
                153.484
                Prewash equipment.
                153.486
                Design and equipment for removing NLS residue by ventilation: Categories A, B, C, and D.
                153.488
                Design and equipment for tanks carrying high melting point NLSs: Category B.
                153.490
                Cargo Record Book and Approved Procedures and Arrangements Manual: Categories A, B, C, and D.
                153.491
                Waiver of certain equipment for dedicated cargo tanks.

                Special Requirements
                153.500
                Inert gas systems.
                153.501
                Requirement for dry inert gas.
                153.515
                Special requirements for extremely flammable cargoes.
                153.520
                Special requirements for carbon disulfide.
                153.525
                Special requirements for unusually toxic cargoes.
                153.526
                Toxic vapor detectors.
                153.527
                Toxic vapor protection.
                153.530
                Special requirements for alkylene oxides.
                153.545
                Special requirements for liquid sulfur.
                153.554
                Special requirements for acids.
                153.555
                Special requirements for inorganic acids.
                153.556
                Special requirements for sulfuric acid and oleum.
                153.557
                Special requirements for hydrochloric acid.
                153.558
                Special requirements for phosphoric acid.
                153.559
                Special requirements for nitric acid (less than 70 percent).
                153.560
                Special requirements for Alkyl (C7-C9) nitrates.
                153.565

                Special requirements for temperature sensors.

                153.602
                Special requirements for cargoes reactive with water.

                Testing and Inspection
                153.806
                Loading information.
                153.808
                Examination required for a Certificate of Compliance.
                153.809
                Procedures for having the Coast Guard examine a vessel for a Certificate of Compliance.
                153.812
                Inspection for Certificate of Inspection.

              Subpart C—Operations

                Documents and Cargo Information
                153.900
                Certificates and authorization to carry a bulk liquid hazardous material.
                153.901
                Documents: Posting, availability, and alteration.
                153.902
                Expiration and invalidation of the Certificates of Compliance.
                153.903
                Operating a United States ship in special areas: Categories A, B, and C.
                153.904
                Limitations in the endorsement.
                153.905
                Regulations required to be on board.
                153.907
                Cargo information.
                153.908
                Cargo viscosity and melting point information; measuring cargo temperature during discharge: Categories A, B, and C.
                153.909
                Completing the Cargo Record Book and record retention: Categories A, B, C, and D.
                153.910
                Cargo piping plan.
                153.912
                Certficate of inhibition or stabilization.

                General Cargo Operational Requirements
                153.920
                Cargo quantity limitations.
                153.921
                Explosives.
                153.923
                Inerting systems.

                General Vessel Safety
                153.930
                Cargo antidotes.
                153.931
                Obstruction of pumproom ladderways.
                153.932
                Goggles and protective clothing.
                153.933
                Chemical protective clothing.
                153.934
                Entry into spaces containing cargo vapor.
                153.935
                Opening of tanks and cargo sampling.
                153.935a
                Storage of cargo samples.
                153.936
                Illness, alcohol, drugs.

                Marking of Cargo Transfer Hose
                153.940
                Standards for marking of cargo hose.

                Cargo Transfer Procedures
                153.953
                Signals during cargo transfer.
                153.955
                Warning signs during cargo transfer.
                153.957
                Persons in charge of transferring liquid cargo in bulk or cleaning cargo tanks.
                153.959
                Approval to begin transfer operations required.
                153.964
                Discharge by gas pressurization.
                153.966
                Discharge by liquid displacement.
                153.968
                Cargo transfer conference.
                153.970
                Cargo transfer piping.
                153.972
                Connecting a cargo hose.
                153.975
                Preparation for cargo transfer.
                153.976
                Transfer of packaged cargo or ship's stores.
                153.977
                Supervision of cargo transfer.
                153.979
                Gauging with a sounding tube.
                153.980
                Isolation of automatic closing valves.
                153.981
                Leaving room in tank for cargo expansion.
                153.983
                Termination procedures.

                Special Cargo Procedures
                153.1000
                Special operating requirements for cargoes reactive with water.
                153.1002
                Special operating requirements for heat sensitive cargoes.
                153.1003
                Prohibited carriage in deck tanks.
                153.1004
                Inhibited and stabilized cargoes.
                153.1010
                Alkylene oxides.
                153.1011
                Changing containment systems and hoses to and from alkylene oxide service.
                153.1020
                Unusually toxic cargoes.
                153.1025
                Motor fuel antiknock compounds.
                153.1035
                Acetone cyanohydrin or lactonitrile solutions.
                153.1040
                Carbon disulfide.
                153.1045
                Inorganic acids.
                153.1046
                Sulfuric acid.
                153.1052
                Carriage of other cargoes in acid tanks.
                153.1060
                Benzene.
                153.1065
                Sodium chlorate solutions.

                Approval of Surveyors and Handling of Categories A, B, C, and D Cargo and NLS Residue
                153.1100
                Responsibility of the person in charge.
                153.1101
                Procedures for getting a Surveyor: Approval of Surveyors.
                153.1102
                Handling and disposal of NLS residue: Categories A, B, C, and D.
                153.1104
                Draining of cargo hose: Categories A, B, C, and D.
                153.1106
                Cleaning agents.
                153.1108
                Heated prewash for solidifying NLS, high viscosity NLS and required prewashes of NLS whose viscosity exceeds 25 mPa sec at 20 °C: Categories A, B, and C.
                153.1112
                Prewash for tanks containing Category A NILS residue.
                153.1114
                Conditions under which a prewash may be omitted: Categories A, B, and C.
                153.1116

                Prewash for tanks unloaded without following the approved Procedures and Arrangements Manual: Category B and C.

                153.1118
                Prewash of Categories B and C cargo tanks not meeting stripping standards: Categories B and C.
                153.1119
                When to prewash and discharge NLS residues from a prewash; unloading an NLS cargo in a country whose Administration is not signatory to MARPOL 73/78: Categories A, B, and C.
                153.1120
                Procedures for tank prewash: Categories A, B, and C.
                153.1122
                Discharges of NLS residue from tank washing other than a prewash: Categories A, B, and C.
                153.1124
                Discharges of Category D NLS residue.
                153.1126
                Discharge of NLS residue from a slop tank to the sea: Categories A, B, C, and D.
                153.1128
                Discharge of NLS residue from a cargo tank to the sea: Categories A, B, C, and D.
                153.1130
                Failure of slops discharge recording equipment; operating with, reporting failures, and replacing pollution equipment: Category A, B, C, D.
                153.1132
                Reporting spills and non-complying discharges: Category A, B, C, and D.

                Maintenance
                153.1500
                Venting system rupture disks.
                153.1502
                Fixed ballast relocation.
                153.1504
                Inspection of personnel emergency and safety equipment.

              Subpart D—Test and Calculation Procedures for Determining Stripping Quantity, Clingage NLS Residue, and Total NLS Residue
              153.1600
              Equipment required for conducting the stripping quantity test.
              153.1602
              Test procedure for determining the stripping quantity.
              153.1604
              Determining the stripping quantity from the test results.
              153.1608
              Calculation of total NLS residue and clingage NLS residue.
              Table 1 to Part 153—Summary of minimum requirements
              Table 2 to Part 153—Cargoes Not Regulated Under Subchapters D or O of This Chapter When Carried in Bulk on Non-Oceangoing Barges
              Appendix I to Part 153 [Reserved]
              Appendix II to Part 153—Metric Units Used in Part 153

            Authority:
            46 U.S.C. 3703; Department of Homeland Security Delegation No. 0170.1. Section 153.40 issued under 49 U.S.C. 5103. Sections 153.470 through 153.491, 153.1100 through 153.1132, and 153.1600 through 153.1608 also issued under 33 U.S.C. 1903 (b).

            Source:
            CGD 73-96, 42 FR 49027, Sept. 26, 1977, unless otherwise noted.

            Editorial Note:
            Nomenclature changes to part 153 appear by CGD-95-072, 60 FR 50465, Sept. 29, 1995, CGD-96-041, 61 FR 50732, Sept. 27, 1996, USCG-2009-0702, 74 FR 49235, Sept. 25, 2009, and USCG-2012-0832, 77 FR 59784, Oct. 1, 2012.

            Subpart A—General

              § 153.0
              Availability of materials.
              (a) Various sections in this part refer to the following documents which are incorporated in Annex II of MARPOL 73/78.
              (1) IMO Standards for Procedures and Arrangements for the Discharge of Noxious Liquid Substances, Resolution MEPC 18(22), 1985 in effect on April 6, 1987.
              (2) IMO International Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk, Resolution MEPC 19(22), 1985 in effect on April 6, 1987.
              (3) IMO Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk, Resolution MEPC 20(22), 1985 in effect on April 6, 1987.
              (b) The IMO documents listed in this section are available from the following:
              (1) IMO Secretariat, Publications section, 4 Albert Embankment, London SE1 7SR, United Kingdom, Telex 23588;
              (2) New York Nautical Instrument and Service Company, 140 West Broadway, New York, NY 10013;
              (3) Baker, Lyman & Company, 3220 South I-10 Service Road, Metairie, LA 70001.
              (4) UNZ & Company, 190 Baldwin Avenue, Jersey City, NJ 07306.
              (5) Southwest Instrument Company, 235 West 7th Street, San Pedro, CA 90731.
              (6) Marine Education Textbooks, 124 North Van Avenue, Houma, LA 70363-5895.
              [CGD 81-101, 52 FR 7777, Mar. 12, 1987, as amended by CGD 92-100, 59 FR 17028, Apr. 11, 1994]

              § 153.1
              Applicability.
              This part applies to the following:

              (a) All United States self-propelled ships and those foreign self-propelled ships operating in United States waters that carry in bulk a cargo listed in Table 1 or allowed in a written permission under § 153.900(d), unless—
              (1) The ship is carrying the cargo under 33 CFR part 151;
              (2) The ship is carrying the cargo in a portable tank under subpart 98.30 or 98.33 of this chapter; or
              (3) The ship is an offshore supply vessel carrying the cargo under subpart 98.31 of the chapter; or
              (b) All United States oceangoing non-self-propelled ships and those foreign non-self-propelled ships operating in United States waters that carry in bulk a Category A, B, or C NLS cargo listed in Table 1 or allowed in a written permission under § 153.900(d), unless—
              (1) The ship is carrying the cargo under 33 CFR part 151;
              (2) The ship is carrying the cargo in a portable tank under subpart 98.30 or 98.33 of this chapter;
              (3) The ship is an offshore supply vessel carrying the cargo under subpart 98.31 of this chapter; or
              (4) The ship's Certificate of Inspection is endorsed for a limited short protected coastwise route and the ship is constructed and certificated primarily for service on an inland route.
              (c) All ships that carry a bulk liquid, liquefied gas, or compressed gas cargo that is not—
              (1) Listed in Table 1 of this part;
              (2) Listed in Table 2 of this part;
              (3) Carried under a written permission granted under § 153.900(d);
              (4) Carried under part 30 through 35, 98, 151, or 154 of this chapter; or
              (5) Carried as an NLS under 33 CFR part 151.
              [CGD 81-101, 52 FR 7777, Mar. 12, 1987, as amended by CGD 84-025, 53 FR 15844, May 4, 1988; CGD 81-101, 53 FR 28974, Aug. 1, 1988 and 54 FR 12629, Mar. 28, 1989; CGD 84-043, 55 FR 37413, Sept. 11, 19905; CGD 96-041, 61 FR 50732, Sept. 27, 1996]

              § 153.2
              Definitions and acronyms.
              As used in this part:

                Accommodation spaces means halls, dining rooms, lounges, lavatories, cabins, staterooms, offices, hospitals, cinemas, game and hobby rooms, pantries containing no cooking appliances, and similar permanently enclosed spaces.

                Adequate reception facility means each facility certified as adequate under 33 CFR 158.160 and each facility provided by a Administration signatory to MARPOL 73/78 under Regulation 7 of Annex II.

                Annex II means Annex II to MARPOL 73/78 and is the Annex to MARPOL 73/78 regulating the discharge of noxious liquid substances to the sea.

                B means the breadth of the vessel and is defined in § 42.13-15(d) of this chapter.

                Built means that a ship's construction has reached any of the following stages:
              (1) The keel is laid.
              (2) The mass of the partially assembled ship is 50,000 kg.
              (3) The mass of the partially assembled ship is one percent of the estimated mass of the completed ship.

                Cargo area means that part of a vessel that includes the cargo tanks, spaces adjacent to the cargo tanks and the part of the deck over the cargo tanks and adjacent spaces.

                Cargo containment system means a cargo tank, its cargo piping system, its venting system, and its gauging system.

                Cargo handling space means an enclosed space that must be entered during a routine loading, carriage, or discharge of cargo and that contains an element of the cargo containment system having a seal or packing to prevent the escape of cargo, such as a valve, cargo pump, or cargo vapor compressor.

                Cargo piping system means a tankship's permanently installed piping arrangement, including any valves and pumps, that carries cargo to or from a cargo tank.

                Cargo tank means a tank that:
              (1) Is part of or permanently affixed to a tankship; and
              (2) Carries a cargo described in part 153, table 1—SUMMARY OF MINIMUM REQUIREMENTS in any quantity, including residual liquid or vapor.

                Certificate of Compliance means a certificate issued by the Coast Guard that a foreign flag vessel had been examined and found to comply with the regulations in this chapter.

                Closed gauging system means an arrangement for gauging the amount of cargo in a tank, such as a float and tape or a magnetically coupled float and indicator, that does not have any opening through which cargo vapor or liquid can escape.

                Combustible is defined in § 30.10-15 of this chapter.

                Commandant means Commandant (staff symbol), Attn: (Staff title), U.S. Coast Guard Stop (mailing code) 2703 Martin Luther King Jr. Avenue SE., Washington, DC 20593-(mailing code).
              The term is often followed by a mailing code in parentheses. The mailing address should include any mailing code and should be written as follows:

                Commandant (mailing code), U.S. Coast Guard, 2100 2nd Street SW., Stop 7126, Washington, DC 20593-7126.

                Control space is defined in § 30.10-19a of this chapter.

                Cycle, means that the tank washing machine progresses through complete rotations until it reaches an orientation identical to its starting orientation.

                Note:
                For a typical one or two nozzle tank washing machine that rotates in both the horizontal and vertical planes though more slowly in one than the other, a cycle would be at least one rotation in each plane of rotation.

                Dedicated ballast tank means a tank that is used only for ballast.

                Emergency shutdown station means a part of the tankship where the required emergency shutdown controls are clustered.

                Flammable is defined in § 30.10-22 of this chapter.

                Forward perpendicular is defined in § 42.13-15(b) of this chapter.

                Hazardous material means a liquid material or substance that is—
              (1) Flammable or combustible;
              (2) Designated a hazardous substance under section 311(b) of the Federal Water Pollution Control Act (33 U.S.C. 1321); or

              (3) Designated a hazardous material under 49 U.S.C. 5103.

                Note:
                The Environmental Protection Agency designates hazardous substances in 40 CFR Table 116.A. The Coast Guard designates hazardous materials that are transported as bulk liquids by water in § 153.40.

                High viscosity NLS includes high viscosity Category B NLS and high viscosity Category C NLS.

                High viscosity Category B NLS means any Category B NLS having a viscosity of at least 25 mPa.s at 20 °C and at least 25 mPa.s at the time it is unloaded.

                High viscosity Category C NLS means any Category C NLS having a viscosity of at least 60 mPa.s at 20 °C and at least 60 mPa.s at the time it is unloaded.

                IMO means the International Maritime Organization (IMO, formerly Inter-Governmental Maritime Consultative Organization or IMCO).

                IMO Bulk Chemical Code includes the IMO International Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk, Resolution MEPC 19(22), 1985 and the IMO Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk, Resolution MEPC 20(22), 1985.

                IMO Certificate includes a Certificate of Fitness for the Carriage of Dangerous Chemicals in Bulk issued under the IMO Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk, Resolution MEPC 20(22), 1985 and an International Certificate of Fitness for the Carriage of Dangerous Chemicals in Bulk issued under the IMO International Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk, Resolution MEPC 19(22), 1985.

                Independent, as applied to a cargo piping, venting, heating or cooling system means that the system is connected to no other system, and has no means available for connection to another system.

                Independent tank means a cargo tank that is permanently affixed to the vessel, that is self-supporting, that incorporates no part of the vessel's hull and that is not essential to the integrity of the hull.

                Intank cargo pump means a pump:
              (1) Located within the cargo tank it serves; and
              (2) Whose piping passes through only the top of the cargo tank.

                Integral tank means a cargo tank that also is part of or is formed in part by the vessel's hull structure so that the tank and the hull may be stressed by the same loads.

                IOPP Certificate means an International Oil Pollution Prevention Certificate required under 33 CFR 151.19.

                L means the length of the vessel and is defined in § 42.13-15(a) of this chapter.

                Liquid means each substance having a vapor pressure of 172 kPa or less at 37.8 °C.

                Marine Inspector is defined in § 30.10-43 of this chapter.

                MARPOL 73/78 means the International Convention for Prevention of Pollution from Ships, 1973 (done at London, November 2, 1973), modified by the Protocol of 1978 relating to the International Convention for Prevention of Pollution from Ships, 1973 (done at London, on February 17, 1978).

                Master means the person-in-charge of a self-propelled or non-self-propelled ship.

                Mixture means a mixture containing only the substances described in conjunction with the term.

                Nearest land has the same meaning as in 33 CFR 151.05(h).

                Noxious liquid substance (NLS) means—
              (1) Each substance listed in 33 CFR 151.47 or 33 CFR 151.49;
              (2) Each substance having an “A,” “B,” “C,” or “D” beside its name in the column headed “Pollution Category” in Table 1; and
              (3) Each substance that is identified as an NLS in a written permission issued under § 153.900(c).

                NLS Certificate means an International Pollution Prevention Certificate for the Carriage of Noxious Liquid Substances in Bulk issued under Annex II of MARPOL 73/78.

                Oceangoing ship has the same meaning as in 33 CFR 151.05(j).

                Officer in Charge, Marine Inspection, is defined in § 1.05(b) of this chapter.

                Open gauging means an arrangement for gauging the amount of cargo in a tank through a large opening, such as a tank hatch or ullage opening.

                Open venting system means a venting system that always allows vapor to flow freely to and from the tank.

                Phosphoric acid means phosphoric acid, superphosphoric acid, and aqueous solutions of phosphoric acid.

                Pressure-vacuum (PV) valve means a valve that is normally closed and which opens under a preset positive pressure or a vacuum.

                Prewash means a tank washing operation that meets the procedure in § 153.1120.

                Pumproom means any enclosed space containing a pump that is part of a cargo containment system.

                Reception facility means anything capable of receiving NLS residues in a country whose Administration is not signatory to MARPOL 73/78 and each adequate reception facility.

                Refrigerated tank means a cargo tank that is equipped to carry a cargo that must be cooled in order to keep the cargo's vapor pressure from exceeding the tank's pressure-vacuum or safety relief valve setting under ambient conditions of 32 °C (approx. 90 °F) still water and 46 °C (approx. 115 °F) still air.

                Relief valve setting means the inlet line pressure at which a vent system's pressure-vacuum or safety relief valve fully opens.

                Residues and mixtures containing NLSs (NLS residue) means—
              (1) Any Category A, B, C, or D NLS cargo retained on the ship because it fails to meet consignee specifications;
              (2) Any part of a Category A, B, C, or D NLS cargo remaining on the ship after NLS is discharged to the consignee, including but not limited to puddles on the tank bottom and in sumps, clingage in the tanks, and substance remaining in the pipes; or
              (3) Any material contaminated with a Category A, B, C, or D NLS cargo, including but not limited to bilge slops, ballast, hose drip pan contents, and tank wash water.

                Restricted gauging system means a method of gauging the amount of cargo in a tank through an opening of limited size that restricts or prevents the release of cargo vapors from the tank vapor space.

                Safety relief (SR) valve means a normally closed valve that opens under a preset positive pressure.

                Separate and separated, as applied to a cargo piping, venting, heating or cooling system, means either an independent system or one that may be disconnected from all other systems by:
              (a) Removing spool pieces or valves and blanking the open pipe ends; or

              (b) Blocking each system interconnection with two blind flanges in series and providing a means of detecting leakage into the pipe section between the flanges.

                Service spaces means spaces outside the cargo area used for galleys, pantries containing cooking appliances, lockers, store rooms, workshops other than those forming part of machinery spaces, and trunks to such spaces.

                Ship means a vessel of any type whatsoever, including hydrofoils, air-cushion vehicles, submersibles, floating craft whether self-propelled or not, and fixed or floating platforms.

                Slop tanks include slop tanks and cargo tanks used as slop tanks.

                Solidifying NLS means a Category A, B, or C NLS that has a melting point—
              (1) Greater than 0 °C but less than 15 °C and a temperature, measured under the procedure in § 153.908(d), that is less than 5 °C above its melting point at the time it is unloaded; or
              (2) 15 °C or greater and has a temperature, measured under the procedure in § 153.908(d), that is less than 10 °C above its melting point at the time it is unloaded.

                Solution means a water solution.

                Special area means the Baltic Sea Area as defined in 33 CFR 151.13(a)(2) and the Black Sea Area as defined in 33 CFR 151.13(a)(3).

                SR venting system means a venting system in which an SR valve controls vapor flow from the cargo tank.

                Tankship has the same meaning as “ship”.

                Venting system means a permanent piping arrangement leading from a cargo tank and used to control the flow of vapor to and from the tank.
              [CGD 73-96, 42 FR 49027, Sept. 26, 1977]

                Editorial Note:
                For Federal Register citations affecting § 153.2, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.govinfo.gov.

              § 153.3
              Right of appeal.
              Any person directly affected by a decision or action taken under this part, by or on behalf of the Coast Guard, may appeal therefrom in accordance with subpart 1.03 of this chapter.
              [CGD 88-033, 54 FR 50381, Dec. 6, 1989]

              § 153.4
              Incorporation by reference.

              (a) Certain material is incorporated by reference into this part with the approval of the Director of the Federal Register in accordance with 5 U.S.C. 552(a). To enforce any edition other than that specified in paragraph (b) of this section, the Coast Guard must publish notice of change in the Federal Register and make the material available to the public. All approved material is on file at Coast Guard Headquarters. Contact Commandant (CG-ENG), Attn: Office of Design and Engineering Systems, U.S. Coast Guard Stop 7509, 2703 Martin Luther King Jr. Avenue SE., Washington, DC 20593-7509; or contact the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. All material is available from the sources indicated in paragraph (b) of this section.

              (b) American National Standards Institute (ANSI), 25 West 43rd Street, 4th Floor, New York, NY 10036, http://www.ansi.org.

              (1) ANSI B16.5, Pipe Flanges and Flanged Fittings, 1988, incorporation by reference approved for § 153.940.
              (2) ANSI B16.24, Bronze Pipe Flanges and Flanged Fittings, 1979, incorporation by reference approved for § 153.940.
              (3) ANSI B16.31, Non-Ferrous Flanges, 1971, incorporation by reference approved for § 153.940.

              (c) American Society for Testing and Materials (ASTM), 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, 877-909-2786, http://www.astm.org.

              (1) ASTM F 1122-87 (1992), Standard Specification for Quick Disconnect Couplings, incorporation by reference approved for § 153.940.

              (2) ASTM F1271-90 (Reapproved 2012), Standard Specification for Spill Valves for Use in Marine Tank Liquid Overpressure Protections Applications (approved May 1, 2012), incorporation by reference approved for § 153.365.
              [CGD 88-032, 56 FR 35826, July 29, 1991, as amended by CGD 96-041, 61 FR 50732, Sept. 27, 1996; CGD 97-057, 62 FR 51048, Sept. 30, 1997; USCG-1999-5151, 64 FR 67183, Dec. 1, 1999; 69 FR 18803, Apr. 9, 2004; USCG-2012-0832, 77 FR 59784, Oct. 1, 2012; USCG-2012-0866, 78 FR 13251, Feb. 27, 2013; USCG-2013-0671, 78 FR 60155, Sept. 30, 2013]

              § 153.7
              Ships built before December 27, 1977 and non-self-propelled ships built before July 1, 1983: Application.
              (a) Definitions. (1) Permit means a Certificate of Inspection, Letter of Compliance, or Certificate of Compliance.
              (2) Existing tankship means a tankship for which a contract was let on or before December 27, 1977.
              (3) Letter of Compliance in this section means a letter issued by the Coast Guard before 27 December 1977 which permitted a foreign flag tankship to carry a bulk cargo regulated under this part.
              (b) Endorsements for existing tankships. (1) The Coast Guard endorses the permit of an existing tankship to carry a cargo listed in Table 1 if:
              (i) The tankship held a permit on December 27, 1977, endorsed for the cargo in question;
              (ii) The tankship meets the construction standards under which the Coast Guard issued the permit; and
              (iii) The tankship meets the standards in paragraph (c) of this section.
              (2) The Coast Guard endorses the permit of an existing tankship to carry a cargo listed in Table 1 if:
              (i) The tankship held a permit on December 27, 1977;
              (ii) The Coast Guard did not require the permit to be endorsed with the name of the cargo at any time before December 27, 1977;
              (iii) The tankship meets the construction standards under which the Coast Guard issued the permit;
              (iv) The tankship carried the cargo in question; and
              (v) The tankship meets the standards in paragraph (c) of this section.
              (3) The Coast Guard endorses the permit of an existing tankship to carry a cargo listed in Table 1 if:
              (i) The tankship held a permit on December 27, 1977 endorsed to carry class B or C poisons under 46 CFR part 39;
              (ii) The cargo in question is a class B or C poison;
              (iii) The tankship meets the construction standards in 46 CFR part 39; and
              (iv) The tankship meets the standards in paragraph (c) of this section.
              (4) The Commandant (CG-ENG) considers on a case by case basis endorsing the permit of an existing tankship to carry a cargo listed in Table 1 if:
              (i) The tankship does not come within the categories described in paragraphs (b) (1) through (3) of this section;
              (ii) The tankship meets paragraph (c) of this section; and
              (iii) The tankship meets any additional requirements the Commandant (CG-ENG) may prescribe.
              (c) An existing tankship must meet all the requirements of this part except as provided in paragraphs (c) (3), (4), (5) and (6) of this section.
              (1)-(2) [Reserved]
              (3) The Commandant (CG-ENG) considers on a case by case basis endorsing as a type II containment system one that fails to meet §§ 153.231(b), 153.234, 172.130 and 172.133 of this chapter if the tankship and containment system meet the following minimum conditions:
              (i) The tankship has a loadline certificate.
              (ii) The cargo tank is not part of the tankship's shell plating.
              (iii) The distance between the bottom plating of the cargo tank and the bottom shell plating of the tankship is at least 76 cm measured parallel to the vertical axis of the tankship.
              (4) The Commandant (CG-ENG) considers on a case by case basis endorsing a containment system as a type II containment system if:
              (i) The containment system is modified to meet § 153.231(b) by adding double bottoms or wing tanks; and
              (ii) The tankship can survive the damage described in §§ 172.135 and 172.150 of this chapter to those parts of the tankship other than machinery spaces.

              (5) The Commandant (CG-ENG) considers on a case by case basis endorsing as a type III containment system one that does not meet §§ 153.234, 172.130 and 172.133 of this chapter if the tankship has a load line certificate.
              (6) The Commandant (CG-ENG) considers on a case by case basis endorsing the tankship to carry cargoes listed in Table 1 of this part if the tankship does not meet §§ 153.217, 153.219 and 153.254.
              (d) Except as required by this paragraph, subpart B of this part does not apply to a non-self-propelled ship that carries an NLS cargo under this part if—
              (1) The ship was built before July 1, 1983;
              (2) The ship carries no NLS cargo or NLS residue at any time it is in waters of another Administration signatory to MARPOL 73/78;
              (3) The NLS does not require a type I containment system;
              (4) The ship meets all requirements in parts 30 through 34 and part 151 of this chapter that apply to the cargo;
              (5) The ship meets the provisions in § 153.216 and §§ 153.470 through 153.491 applying to the NLS category of that cargo;
              (6) When the “Special Requirements” column of Table 1 contains an entry for § 153.408 or § 153.409 beside the cargo name, the ship meets the section, except the system prescribed by the section need be capable of operation only during loading;
              (7) [Reserved]
              (8) No part of the ship's hull plating is a component of a cargo tank if the cargo tank is endorsed to carry a cargo having a type II containment system in Table 1.
              [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 21204, May 17, 1982; CGD 82-063b, 48 FR 4781, Feb. 3, 1983; CGD 79-023, 48 FR 51009, Nov. 4, 1983; CGD 81-052, 50 FR 8733, Mar. 5, 1985; CGD 81-101, 52 FR 7779, Mar. 12, 1987; CGD 81-101, 53 FR 28974, Aug. 1, 1988 and 54 FR 12629, Mar. 28, 1989; CGD 95-072, 60 FR 54106, Oct. 19, 1995]

              § 153.8
              Procedures for requesting an endorsed Certificate of Inspection.
              (a) When applying for the endorsed Certificate of Inspection that § 153.900 requires for a ship to carry a cargo listed in Table 1, the applicant must proceed as follows:
              (1) Send a letter to one of the Coast Guard offices listed in § 91.55-15 of this chapter that includes—
              (i) A request for the endorsed Certificate of Inspection;
              (ii) The name of the ship; and
              (iii) A list of the cargoes from Table 1 the applicant wishes the endorsement to allow.
              (2) Supply to the Coast Guard when requested—
              (i) Hull type calculations;
              (ii) The plans and information listed in §§ 54.01-18, 56.01-10, 91.55-5 (a), (b), (d), (g), and (h), and 110.25-1 of this chapter;
              (iii) A copy of the Procedures and Arrangements Manual required by § 153.490; and
              (iv) Any other ship information, including plans, design calculations, test results, certificates, and manufacturer's data, that the Coast Guard needs to determine if the ship meets this part.
              (b) The Coast Guard notifies the applicant in writing—
              (1) Whether any further information is necessary to evaluate the request for the endorsed Certificate of Inspection; and
              (2) Of the outcome of the request for the endorsed Certificate of Inspection.

              (c) The Coast Guard returns the Procedures and Arrangements Manual stamped “Approved” or indicating what corrections are necessary.

                Note:
                The procedures for requesting an IOPP Certificate are found in 33 CFR Part 151.

              [CGD 81-101, 52 FR 7779, Mar. 12, 1987]

              § 153.9
              Foreign flag vessel endorsement application.
              (a) Application for a vessel whose flag administration is signatory to MARPOL 73/78 and issues IMO Certificates. A person who desires a Certificate of Compliance endorsed to carry a cargo in table 1 of this part, as described in § 153.900 of this part, must request the endorsement from the cognizant Officer in Charge, Marine Inspection and have aboard the vessel copies of IMO Certificates issued by the vessel's administration and—

              (1) An additional classification society statement that the vessel complies with § 153.530 (b), (d), and (p)(1) if a person desires a Certificate of Compliance endorsed with the name of an alkylene oxide; and
              (2) An additional classification society statement that the vessel complies with §§ 153.370, 153.371, and 153.438 if a person desires a Certificate of Compliance endorsed with the name of a cargo whose vapor pressure exceeds 100 kPa absolute at 37.8 °C (approximately 14.7 psia at 100 °F).
              (b) Application for a vessel whose flag administration does not issue IMO Certificates. A person who desires a Certificate of Compliance endorsed with the name of a cargo in Table 1 of this part, as described in § 153.900, must submit an application, in a written or electronic format, to Commanding Officer (MSC), Attn: Marine Safety Center, U.S. Coast Guard Stop 7430, 2703 Martin Luther King Jr. Avenue SE., Washington, DC 20593-7430, that includes the following information:
              (1) A copy of the vessel's Cargo Ship Safety Construction Certificate and Cargo Ship Safety Equipment Certificate issued under the International Convention for Safety of Life at Sea, 1974.
              (2) A list of those cargoes for which the Letter of Compliance is to be endorsed.
              (3) The specific tanks that are to be endorsed for each cargo.
              (4) The names of the U.S. ports in which the person anticipates operating the vessel.
              (5) The name of the vessel's flag administration.
              (6) The name of the society that classes the vessel.
              (7) A brief description of the vessel's cargo containment systems.
              (8) Hull type calculations.
              (9) The plans and information listed in §§ 54.01-18, 56.01-10, 91.55-5 (a), (b), (d), (g), and (h), and 111.05-5(d) of this chapter.
              (c) Conditions applying to all Certificate of Compliance applications. (1) If requested by the Commanding Officer, U.S. Coast Guard Marine Safety Center, a person desiring a Certificate of Compliance for a vessel must furnish any other vessel information such as plans, design calculations, test results, certificates, and manufacturer's data, that the Coast Guard needs to determine that the vessel meets the standards of this part.
              (2) Correspondence with the Coast Guard and vessel information submitted under this part must be in English except IMO Certificates which may be in French.
              [CGD 73-96, 42 FR 49027, Sept. 26, 1977]

                Editorial Note:
                For Federal Register citations affecting § 153.9, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.govinfo.gov.

              § 153.10
              Procedures for requesting alternatives and waivers; termination of waivers.
              (a) The Coast Guard considers allowing the use of an alternative in place of a requirement in this part if—
              (1) The person wishing to use the alternative sends a written application to the Commandant (CG-ENG) explaining—
              (i) The requirement in this part that would not be met and the reason why;
              (ii) The alternative the person proposes to be substituted; and
              (iii) How the alternative would ensure a level of safety and pollution protection at least equal to that of the requirement for which the alternative would substitute;
              (2) The alternative does not substitute an operational standard for a design or equipment standard; and
              (3) The Commandant (CG-ENG) determines that the alternative provides a level of protection for purposes of safety and pollution at least equal to the requirement in this part.
              (b) The Coast Guard considers granting a waiver of a requirement for which this part allows a waiver if the person wishing the waiver sends a written application to the Commandant (CG-ENG) that includes—
              (1) A citation of the regulation that allows the waiver; and
              (2) Any information and pledges that the regulation requires to be submitted with the application for the waiver.
              (c) The Commandant notifies the applicant in writing—
              (1) Whether any further information is necessary to evaluate the request for an alternative or waiver; and

              (2) Of the outcome of the request for an alternative or waiver.

              (d) A waiver issued under this part terminates if any—
              (1) Information required to be supplied with the application for the waiver changes;
              (2) Pledges required to be supplied with the application for the waiver are repudiated;
              (3) Restrictions or procedures applying to operations under the waiver are violated; or
              (4) Requirements in the section of this part authorizing the waiver are violated.
              [CGD 81-101, 52 FR 7780, Mar. 12, 1987]

              § 153.12
              IMO Certificates for United States Ships.
              Either a classification society authorized under 46 CFR part 8, or the Officer in Charge, Marine Inspection, issues a United States ship an IMO Certificate endorsed to allow the carriage of a hazardous material or NLS cargo in table 1 of this part if the following requirements are met:
              (a) The ship's owner must make a request to the OCMI for the IMO Certificate.
              (b) The ship must meet this part.
              (c) Self-propelled ships contracted for after November 1, 1973 but built before December 28, 1977 must meet requirements in this part that apply to a self-propelled ship built on December 28, 1977.
              (d) Non-self-propelled ships contracted for after November 1, 1973 but built before July 1, 1983 must meet the requirements in this part applying to non-self-propelled ships built on July 1, 1983.
              [CGD 81-101, 52 FR 7780, Mar. 12, 1987, as amended by CGD 95-010, 62 FR 67537, Dec. 24, 1997]

              § 153.15
              Conditions under which the Coast Guard issues a Certificate of Inspection or Certificate of Compliance.
              (a) The Coast Guard issues the endorsed Certificate of Inspection required under § 153.900 for a United States ship to carry a hazardous material or NLS listed in Table 1 if—
              (1) The person wishing the Certificate of Inspection applies following the procedures under § 153.8; and
              (2) The ship meets the design and equipment requirements of this part and—
              (i) Subchapter D of this chapter if the hazardous material or NLS is flammable or combustible; or
              (ii) Either Subchapter D or I of this chapter, at the option of the ship owner, if the hazardous material or NLS is non-flammable or non-combustible.
              (b) The Coast Guard issues the endorsed Certificate of Compliance required under § 153.900 for a foreign ship to carry a hazardous material or NLS listed in Table 1 if—
              (1) The person wishing the Certificate of Compliance follows the procedures under § 153.9;
              (2) The ship has an IMO Certificate issued by its Administration and endorsed with the name of the hazardous material or NLS if the ship's Administration is signatory to MARPOL 73/78;
              (3) The ship meets the requirements of this part applying to United States ships and § 30.01-5(e) of this chapter if the ship's Administration is not signatory to MARPOL 73/78; and
              (4) The ship meets any additional design and equipment requirements specified by the Commandant (CG-ENG).
              [CGD 81-101, 52 FR 7780, Mar. 12, 1987]

              § 153.16
              Requirements for foreign flag vessel permits.
              To have its Certificate of Compliance endorsed to carry a cargo listed in Table 1, a foreign flag vessel must:
              (a) Have an IMO Certificate, if the flag administration issues IMO Certificates, endorsed with the name of the cargo and meet any specific requirements in this subpart that the Commandant (CG-ENG) may prescribe; or
              (b) Meet the requirements of this subpart and § 30.01-5(e) of this chapter.
              [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 82-063b, 48 FR 4781, Feb. 3, 1983; CGD 81-052, 50 FR 8733, Mar. 5, 1985; CGD 81-101, 52 FR 7780, Mar. 12, 1987; CGD 95-027, 61 FR 26008, May 23, 1996]

              § 153.30
              Special area endorsement.

              The Coast Guard endorses the Certificate of Inspection of a United States ship allowing it to operate in special areas if the ship owner—

              (a) Requests the endorsement following the procedures in § 153.8;
              (b) Shows that the ship meets the design and equipment requirements applying to ships operating in special areas contained in Regulations 5, 5A, and 8 of Annex II and the Standards for Procedures and Arrangements.
              [CGD 81-101, 52 FR 7780, Mar. 12, 1987]

              § 153.40
              Determination of materials that are hazardous.
              Under the authority delegated by the Secretary of Transportation in 49 CFR 1.46(t) to carry out the functions under 49 U.S.C. 1803, the Coast Guard has found the following materials to be hazardous when transported in bulk:
              (a) Materials listed in Table 30.25-1 of this chapter.
              (b) Materials listed in Table 151.05.
              (c) Materials listed in Table 1. 1

                  1 Those hazardous material cargoes designated Category A, B, C, or D in Table 1 are also Noxious Liquid Substances under Annex II and the Act to Prevent Pollution from Ships, 33 U.S.C. 1901 et seq.

              (d) Materials listed in Table 4 of Part 154.
              (e) Materials that are NLSs under MARPOL Annex II.
              (f) Liquids, liquefied gases, and compressed gases, that are—
              (1) Listed in 49 CFR 172.101;
              (2) Listed in 49 CFR 172.102; or
              (3) Listed or within any of the definitions in subparts C through O of 49 CFR part 173.
              (g) Those liquid, liquefied gas, and compressed gas materials designated as hazardous in the permissions granted under § 153.900(c). 2

                  2 The Coast Guard continues to propose in the Federal Register any addition of these designated hazardous materials to one of the tables referred to in paragraphs (a) through (d).

              [CGD 81-101, 52 FR 7780, Mar. 12, 1987]

            Subpart B—Design and Equipment

              General Vessel Requirements

                § 153.190
                Stability requirements.
                Each vessel must meet the applicable requirements in Subchapter S of this chapter.
                [CGD 79-023, 48 FR 51009, Nov. 4, 1983. Redesignated by CGD 81-101, 52 FR 7780, Mar. 12, 1987]

                § 153.201
                Openings to accommodation, service or control spaces.
                (a) Except as allowed in paragraph (b) of this section, entrances, ventilation intakes and exhausts, and other openings to accommodation, service, or control spaces must be located aft of the house bulkhead facing the cargo area a distance at least equal to the following:
                (1) 3 m (approx. 10 ft) if the vessel length is less than 75 meters (approx. 246 ft).
                (2) L/25 if the vessel length is between 75 and 125 meters (approx. 246 ft and 410 ft).
                (3) 5 m (approx. 16.5 ft) if the vessel length is more than 125 meters (approx. 410 ft).
                (b) Fixed port lights, wheelhouse doors, and windows need not meet the location requirements specified in paragraph (a) of this section if they do not leak when tested with a fire hose at 207 kPa gauge (30 psig).
                [CGD 81-078, 50 FR 21173, May 22, 1985]

                § 153.208
                Ballast equipment.
                (a) Except for the arrangement described in paragraph (b) of this section no piping that serves a dedicated ballast tank that is adjacent to a cargo tank may enter an engine room or accommodation space.
                (b) Piping used only to fill a dedicated ballast tank adjacent to a cargo tank may enter an engine room or accommodation space if the piping has a valve or valving arrangement:
                (1) Within the part of the tankship where a containment system may be located under § 153.234;

                (2) That allows liquid to flow only towards that ballast tank (such as a check valve); and

                (3) That enables a person to shut off the fill line from the weatherdeck (such as a stop valve).
                (c) Except as prescribed in paragraph (d) of this section, pumps, piping, vent lines, overflow tubes and sounding tubes serving dedicated ballast tanks must not be located within a cargo containment system.
                (d) Each vent line, overflow tube and sounding tube that serves a dedicated ballast tank and that is located within a cargo containment system must meet § 32.60-10(e)(2) of this chapter.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 21207, May 17, 1982]

                § 153.209
                Bilge pumping systems.
                Bilge pumping systems for cargo pumprooms, slop tanks, and void spaces separated from cargo tanks by only a single bulkhead must be entirely within the locations allowed containment systems in § 153.234.

                § 153.214
                Personnel emergency and safety equipment.
                Each self-propelled ship must have the following:
                (a) Two stretchers or wire baskets complete with equipment for lifting an injured person from a pumproom or a cargo tank.
                (b) In addition to any similar equipment required by Subchapter D of this chapter, three each of the following:
                (1) A 30 minute self-contained breathing apparatus of the pressure demand type, approved by the Mining Safety and Health Administration (formerly the Mining Enforcement and Safety Administration) and the National Institute for Occupational Safety and Health, or the tankship's flag administration with five refill tanks or cartridges of 30 minutes capacity each.
                (2) A set of overalls or large apron, boots, long sleeved gloves, and goggles, each made of materials resistant to the cargoes in Table 1 that are endorsed on the Certificate of Inspection or Certificate of Compliance.
                (3) A steel-cored lifeline with harness.
                (4) An explosion-proof lamp.
                (c) First aid equipment.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 77-222, 43 FR 57256, Dec. 7, 1978; CGD 78-128, 47 FR 21207, May 17, 1982; CGD 81-052, 50 FR 8733, Mar. 5, 1985; CGD 81-101, 52 FR 7781, Mar. 12, 1987]

                § 153.215
                Safety equipment lockers.
                Each self-propelled ship must have the following:
                (a) Each tankship must have at least two safety equipment lockers.
                (b) One safety equipment locker must be adjacent to the emergency shutdown station required by § 153.296(b). This locker must contain one set of the equipment required by § 153.214(a) and two sets of that required by § 153.214(b).
                (c) The second safety equipment locker must be adjacent to the second emergency shutdown station required by § 153.296. This locker must contain the remaining equipment required by § 153.214 (a) and (b).
                (d) Each safety equipment locker must be marked as described in § 153.955 (c), (d), and (e) with the legend “SAFETY EQUIPMENT.”
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 21207, May 17, 1982; CGD 81-101, 52 FR 7781, Mar. 12, 1987]

                § 153.216
                Shower and eyewash fountains.
                (a) Each non-self-propelled ship must have a fixed or portable shower and eyewash fountain that operates during cargo transfer and meets paragraph (c) of this section.
                (b) Each self-propelled ship must have a shower and eyewash fountain that operates at all times and meets paragraph (c) of this section.
                (c) The shower and eyewash fountains required by paragraphs (a) and (b) of this section must—
                (1) Operate in any ambient temperature;
                (2) Dispense water at a temperature between 0 °C and 40 °C (approx. 32 °F and 104 °F);
                (3) Be located on the weatherdeck; and

                (4) Be marked “EMERGENCY SHOWER” as described in § 153.955 (c), (d), and (e), so that the marking is visible from work areas in the part of the deck where the cargo containment systems are located.
                [CGD 81-101, 52 FR 7781, Mar. 12, 1987]

                § 153.217
                Access to enclosed spaces and dedicated ballast tanks.
                An access opening to an enclosed space or a dedicated ballast tank must meet the requirements for a cargo tank access in § 153.254 (b), (c), and (d) if:
                (a) The enclosed space or dedicated ballast tank is located within the cargo area of the vessel; or
                (b) A part of a cargo containment system lies within the enclosed space or dedicated ballast tank.
                [CGD 78-128, 47 FR 21207, May 17, 1982]

                § 153.219
                Access to double bottom tanks serving as dedicated ballast tanks.
                (a) Except as prescribed in paragraph (b) of this section, access openings to double bottom tanks serving as dedicated ballast tanks must not be located within a cargo containment system.
                (b) Each access opening to a double bottom tank that is a dedicated ballast tank and that is located within a cargo containment system must be:
                (1) Enclosed in an access trunk extending to the weatherdeck;
                (2) Separated from the cargo containment system by two manhole coverings; or
                (3) Approved by the Commandant (CG-ENG).
                [CGD 78-128, 47 FR 21207, May 17, 1982, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

              Cargo Containment Systems

                § 153.230
                Type I system.
                A type I containment system must meet the following requirements:
                (a) The vessel must meet the requirements in subpart F of part 172 of this chapter for a type I hull.
                (b) Except as described in § 153.235:
                (1) It may be no closer to the tankship's shell than 76 cm (approx. 29.9 in.); and
                (2) It may not be located in any part of the tankship subject to the damage described in Table 172.135 of this chapter for:
                (i) Collision Penetration, Transverse extent; and
                (ii) Grounding Penetration, Vertical extents from the baseline upward.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 79-023, 48 FR 51009, Nov. 4, 1983]

                § 153.231
                Type II system.
                A type II containment system must meet the following requirements:
                (a) The vessel must meet the requirements in subpart F of part 172 of this chapter for a type I or II hull.
                (b) Except as allowed in §§ 153.7 and 153.235—
                (1) It may be no closer to the tankship's shell than 76 cm (approx. 29.9 in.); and

                (2) It may not be located in any part of the tankship subject to the damage described in Table 172.135 of this chapter for Grounding Penetration, Vertical extent from the baseline upward.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 79-023, 48 FR 51009, Nov. 4, 1983; CGD 81-101, 52 FR 7781, Mar. 12, 1987]

                § 153.232
                Type III system.
                A type III containment system must be in either a type I, II, or III hull. The requirements for type I, II, and III hulls are in subpart F of part 172 of this chapter.
                [CGD 79-023, 48 FR 51009, Nov. 4, 1983]

                § 153.233
                Separation of tanks from machinery, service and other spaces.
                (a) To prevent leakage through a single weld failure, the following spaces must be separated from a cargo by two walls, two bulkheads, or a bulkhead and a deck not meeting in a cruciform joint:
                (1) Machinery spaces.
                (2) Service spaces.
                (3) Accommodation spaces.
                (4) Spaces for storing potable domestic, or feed water.
                (5) Spaces for storing edibles.
                (b) Some examples of arrangements that may separate cargo from the spaces listed in paragraph (a) of this section are the following:
                (1) Dedicated ballast tanks.
                (2) Cargo pumprooms.

                (3) Ballast pumprooms.
                (4) Tanks not carrying a cargo listed in this part. 3

                    3 See also §§ 32.56-5 and 32.60-10 of this chapter for limitations on the stowage of combustible liquids adjacent to ignition sources.

                (5) A cofferdam aft of the cargo containment systems and whose forward bulkhead is forward of any joint common to an accommodations space and the deck.
                (6) Double walled piping or a piping tunnel.

                § 153.234
                Fore and aft location.
                Except as allowed in § 153.7, each ship must meet the following:
                (a) Each cargo containment system and any compartments within which a containment system is located must be forward of a tankship's accommodation spaces.
                (b) Except as described in § 153.235, each cargo containment system must be located at least 0.05L aft of the forward perpendicular, but in no case forward of a collision bulkhead.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 81-101, 52 FR 7781, Mar. 12, 1987]

                § 153.235
                Exceptions to cargo piping location restrictions.
                Cargo piping must not be located in those areas from which a containment system is excluded by §§ 153.230(b), 153.231(b), and 153.234(b) unless the cargo piping:
                (a) Drains back to the cargo tank under any heel or trim resulting from the damage specified in § 172.135 of this chapter; and
                (b) Enters the cargo tank above the liquid level for a full tank in any condition of heel or trim resulting from the damage specified in § 172.135 of this chapter.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 79-023, 48 FR 51009, Nov. 4, 1983]

                § 153.236
                Prohibited materials.
                When one of the following paragraphs of this section is referenced in Table 1, the materials listed in that paragraph may not be used in components that contact the cargo liquid or vapor:
                (a) Aluminum or aluminum alloys.
                (b) Copper or copper alloys.
                (c) Zinc, galvanized steel or alloys having more than 10 percent zinc by weight.
                (d) Magnesium.
                (e) Lead.
                (f) Silver or silver alloys.
                (g) Mercury.

                § 153.238
                Required materials.
                When one of the following paragraphs of this section is referenced in Table 1, only those materials listed in that paragraph may be used in components that contact the cargo liquid or vapor:
                (a) Aluminum, stainless steel, or steel covered with a protective lining or coating.
                (b) With cargo concentrations of 98 percent or greater, aluminum or stainless steel.
                (c) With cargo concentrations of less than 98 percent, 304L or 316 stainless steel.
                (d) Solid austenitic stainless steel.
                (e) Stainless steel or steel covered with a suitable protective lining or coating. (See § 153.266.)
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 88-100, 54 FR 40041, Sept. 29, 1989]

                § 153.239
                Use of cast iron.
                (a) Cast iron used in a cargo containment system must meet the requirements of § 56.60-10(b) of this chapter.
                (b) For purposes of this section, the term “lethal products” in § 56.60-10(b) means those cargoes that Table 1 references to § 153.525 or § 153.527.
                [CGD 78-128, 47 FR 21207, May 17, 1982]

                § 153.240
                Insulation.
                Cargo containment system insulation made necessary by the requirements of this part must meet the requirements in § 38.05-20 of this chapter. However, the vapor barrier required by § 38.05-20(b) is unnecessary if the insulation is:

                (a) Protected from the weather, and attached to a containment system maintained at a temperature in excess of 46 °C (approx. 115 °F); or

                (b) In an atmosphere whose dew point is less than the temperature of any surface in contact with the insulation.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by USCG-2014-0688, 79 FR 58284, Sept. 29, 2014]

              Cargo Tanks

                § 153.250
                Double-bottom and deep tanks as cargo tanks.
                Except in those cases in which Commandant (CG-ENG) specifically approves another arrangement, such as a double-bottom or deep tank as a cargo tank, an integral cargo tank or the hold within which an independent cargo tank is located must extend to the weatherdeck.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 82-063b, 48 FR 4781, Feb. 3, 1983]

                § 153.251
                Independent cargo tanks.
                All independent cargo tank must meet § 38.05-10 (a)(1), (b), (d), and (e)(1) of this chapter.
                [CGD 78-128, 47 FR 21208, May 17, 1982]

                § 153.252
                Special requirement for an independent cargo tank.
                When Table 1 refers to this section, the cargo tank must be an independent tank that meets §§ 38.05-2(d) and 38.05-4(g) of this chapter. (See also § 153.256(b)).
                [CGD 78-128, 47 FR 21208, May 17, 1982]

                § 153.254
                Cargo tank access.
                (a) A cargo tank must have at least one covered manhole opening into the vapor space described in § 153.354.
                (b) An access through a vertical cargo tank surface must be at least 60 cm by 80 cm (approx. 23.6 × 31.5 in.) and no more than 60 cm above a foothold grating, or surface on both sides of the access way.
                (c) An access through a horizontal cargo tank surface must be at least 60 cm by 60 cm (approx. 23.6 × 23.6 in.).
                (d) An access trunk must be no less than 76 cm (approx. 29.9 in.) in diameter.

                § 153.256
                Trunks, domes, and openings of cargo tanks.
                (a) The hatch of a cargo tank must:
                (1) Be at the highest point of the tank; and
                (2) Open on or above the weatherdeck.
                (b) To be endorsed to carry a cargo requiring an independent cargo tank, a tank must have:
                (1) A trunk or dome at the uppermost part of the tank, extending above the weatherdeck;
                (2) Its hatch at the top of the trunk or dome; and
                (3) No openings below the weatherdeck.

                § 153.266
                Tank linings.
                A tank lining must be:
                (a) At least as elastic as the tank material; and
                (b) Applied or attached to the tank as recommended by the lining manufacturer.

              Piping Systems and Cargo Handling Equipment

                § 153.280
                Piping system design.
                (a) Each cargo piping system must meet the standards of Part 56 and §§ 38.10-1(b), 38.10-1(e), and 38.10-10(a) of this chapter.
                (b) Piping carrying cargo or cargo residue may not enter any machinery space except a cargo pumproom.

                § 153.281
                Piping to independent tanks.
                Piping for an independent cargo tank must penetrate the tank only through that part of the tank or dome extending above the weatherdeck.
                [CGD 78-128, 47 FR 21208, May 17, 1982]

                § 153.282
                Cargo filling lines.
                The discharge point of a cargo tank filling line must be no higher above the bottom of the cargo tank or sump than 10 cm (approx. 4 in.) or the radius of the filling line, whichever is greater.

                § 153.283
                Valving for cargo piping.
                (a) Except as described in this section, a cargo line must have a deck operable, manual stop valve:
                (1) In each tank which the line serves; and
                (2) At each cargo hose connection point.

                (b) The valve required by paragraph (a)(1) of this section may be in a cargo pumproom at the pumproom bulkhead if the cargo tank the cargo line serves is adjacent to the pumproom.
                (c) The valve required by paragraph (a)(1) of this section may be on the weatherdeck if:
                (1) The weatherdeck is the top of the tank;
                (2) The line goes through the weatherdeck into the tank; and
                (3) The valve is at the point where the line penetrates the weatherdeck.
                (d) The valve required by paragraph (a)(1) of this section may be outside the tank if:
                (1) The tank is an independent tank; and
                (2) The valve is at the point where the line penetrates the tank.
                (e) The discharge line of an intank cargo pump need not have the valve required by paragraph (a)(1) of this section.
                (f) If the cargo exerts a gravity head pressure on a valve required by this section, the valve must be a positive shutoff valve that meets § 56.50-60(d) of this chapter.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 21208, May 17, 1982]

                § 153.284
                Characteristics of required quick closing valves.
                A remotely actuated quick closing shutoff valve required by § 153.530(n) must:
                (a) Be a positive shutoff valve;
                (b) Be of the fail-closed type that closes on loss of power;
                (c) Be capable of local manual closing;
                (d) Close from the time of actuation in 30 seconds or less; and
                (e) Be equipped with a fusible element that melts at less than 104 °C (approx. 220 °F) and closes the valve.
                [CGD 78-128, 47 FR 21208, May 17, 1982; 47 FR 27293, June 24, 1982]

                § 153.285
                Valving for cargo pump manifolds.
                (a) When cargo lines serving different tanks enter a pumproom and connect to the same pump:
                (1) Each cargo line must have a stop valve within the line;
                (2) The valve must be before the cargo line joins the other lines or pump; and
                (3) The valve must be within the pumproom.
                (b) The valve in paragraph (a) of this section is required in addition to any valve required under § 153.283(b).

                § 153.292
                Separation of piping systems.
                Cargo piping systems must be arranged so that operations necessary to provide separate systems can be accomplished in a cargo handling space or on the weatherdeck.
                [CGD 78-128, 47 FR 21208, May 17, 1982]

                § 153.294
                Marking of piping systems.
                (a) Each cargo piping system must be marked with the designation number of the cargo tank it serves at each hose connection, valve, and blind in the piping system. The markings must be in characters at least 5 cm (approx. 2 in.) high.
                (b) Every hose connection of a cargo piping system must be marked with the cargo piping system's working pressure required by § 38.10-10(a) of this chapter. 4

                    4 See § 153.280 of the part.

                § 153.296
                Emergency shutdown stations.
                (a) Each tankship must have at least two emergency shutdown stations.
                (b) One emergency shutdown station must be located forward of the deckhouse, in the after part of the weatherdeck in which the cargo tanks are located.
                (c) A second emergency shutdown station must be located so that one of the two stations is accessible from any part of the weatherdeck if a break in a cargo piping system or hose causes spraying or leaking.
                (d) Each emergency shutdown station must contain a single remote actuator for all quick closing shutoff valves required by this part.
                (e) Each emergency shutdown station must have the controls necessary to stop all cargo pumps on the tankship.

                (f) Any remote emergency actuator, such as that for a quick closing shut-off valve, a cargo pump, or a water spray system, must be of a type that will not defeat the operation of other remote emergency actuators. The emergency action must occur whether one or several actuators are operated.
                (g) Each emergency shutdown station must be marked as described in § 153.955 (c), (d), and (e) with the legend “EMERGENCY SHUTDOWN STATION” so that the legend is visible from work areas in the part of the deck where the cargo containment systems are located.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 21208, May 17, 1982]

                § 153.297
                Emergency actuators at the point of cargo control.
                (a) The point from which cargo transfer is controlled must have the same actuators an emergency shutdown station must have under § 153.296 and an actuator for any deck water spray systems required by this part.
                (b) The point from which cargo transfer is controlled may be one of the emergency shutdown stations required under § 153.296 if it meets the requirements of that section.

              Cargo Handling Space Ventilation

                § 153.310
                Ventilation system type.
                A cargo handling space must have a permanent forced ventilation system of the exhaust type.

                § 153.312
                Ventilation system standards.
                A cargo handling space ventilation system must meet the following:
                (a) A ventilation system exhaust duct must discharge no less than 10 m (approx. 32.8 ft) from openings into or ventilation intakes for, accommodation or service spaces.
                (b) A ventilation system must not recycle vapors from ventilation discharges.
                (c) Except for the space served by the ventilation duct, a ventilation duct must not pass through a machinery room, an accommodation space, or working spaces.
                (d) A ventilation system must be operable from outside the space it ventilates.
                (e) A ventilation system must be sized to change the air in the ventilated space at least 30 times per hour.
                (f) A ventilation system must not allow air to stagnate in any part of a ventilated space.
                (g) A ventilation system must be able to exhaust air from both above and below the deck plates of a ventilated space.

                § 153.314
                Ventilation of spaces not usually occupied.
                (a) Each tankship must have portable ventilation equipment that fits the mount required in paragraph (b)(1) of this section.
                (b) Each enclosed space within the cargo area that does not have a permanent ventilation system meeting § 153.312 must have:
                (1) A mount for the portable mechanical ventilation equipment required by this section; and
                (2) Either permanent ventilation ductwork connected to the mount and arranged to supply air to the extremities of the space; or
                (3) An attachment for temporary ductwork at the mount with enough ductway in the ventilated space and temporary ductwork stowed aboard the vessel to supply air to the extremities of the space.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 21208, May 17, 1982]

                § 153.316
                Special cargo pumproom ventilation rate.
                When Table 1 refers to this section, the cargo pumproom ventilation system must change the air in the cargo pumproom 45 times per hour and discharge no less than 4 m (approx. 13.1 ft) above the deck.

              Cargo Pumprooms

                § 153.330
                Access.
                (a) The access door to a cargo pump-room must open on the weatherdeck.
                (b) The access way to a cargo pump-room and its valving must allow passage of a man wearing the breathing apparatus required by § 153.214(b)(1).
                (c) Each ladderway in a cargo pump-room must be free from obstructions by piping, framework, or other equipment.

                (d) Cargo pumproom ladders and platforms must have guard railings.

                (e) Each ladder to a cargo pump-room must have an incline from the horizontal of less than 60°.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by USCG-2014-0688, 79 FR 58284, Sept. 29, 2014]

                § 153.332
                Hoisting arrangement.
                (a) A cargo pumproom located below the weatherdeck must have a permanent hoisting arrangement with a lifting capacity of 2500 N (approx. 562 lbs), operable from the weatherdeck, for the removal of an unconscious person.
                (b) The cargo pumproom must have a 60 cm by 60 cm (approx. 2 ft by 2 ft) cross-sectional clearance through the hoistway.

                § 153.333
                Cargo pump discharge pressure gauge.
                Each cargo pump within a pump-room must have a discharge pressure gauge outside the pumproom.

                § 153.334
                Bilge pumping systems.
                (a) A cargo pumproom must have a bilge pumping system.
                (b) The bilge pumping system must have:
                (1) Complete remote operating controls outside the cargo pumproom; and
                (2) An alarm that operates when the depth of liquid in the bilges exceeds 50 cm (approx. 19.7 in.).

                § 153.336
                Special cargo pump or pumproom requirements.
                (a) When Table 1 refers to this section:
                (1) The cargo pump must be an intank cargo pump;
                (2) The cargo pumproom must be on or above the weatherdeck; or
                (3) The cargo pumproom must have the specific approval of the Commandant (CG-ENG).
                (b) For a cargo pumproom described in paragraph (a)(2) or (a)(3) the tankship must:
                (1) Have a low pressure breathing quality air supply system for use with the breathing apparatus in the pumproom; or
                (2) Meet any requirements specified by the Commandant (CG-522).
                (c) A low pressure air supply system described in paragraph (b)(1) of this section must:
                (1) Run from fixed air bottles to the pumproom;
                (2) Have an air compressor to recharge the fixed air bottles;
                (3) have hose connections in the pumproom suitable for use with the breathing apparatus required in § 153.214(b)(1); and
                (4) have the air capacity to enable two men to work in the pumproom for at least one hour each without using the cartridges for the breathing apparatus required in § 153.214(b)(1).
                [CGD 78-128, 47 FR 21208, May 17, 1982, as amended by CGD 82-063b, 48 FR 4781, Feb. 3, 1983]

              Cargo Venting Systems

                § 153.350
                Location of B/3 vent discharges.
                Except as prescribed in § 153.353, a
                B/3 venting system must discharge:
                (a) At the highest of the following points:
                (1) 6m (approx. 19.7 ft) above the weatherdeck.
                (2) B/3 above the weatherdeck.
                (3) 6m (approx. 19.7 ft) above a walkway, if the walkway is within a 6m (approx. 19.7 ft) horizontal radius from the vent discharge.
                (b) At least 15m (approx. 49.2 ft) from air intakes for, or openings into, accommodation and service spaces.
                [CGD 78-128, 47 FR 21208, May 17, 1982; 47 FR 27293, June 24, 1982]

                § 153.351
                Location of 4m vent discharges.
                Except as prescribed in § 153.353, a 4m venting system must discharge:
                (a) At least 4m (approx. 13.1 ft) above the higher of:
                (1) the weatherdeck; or
                (2) any walkway that is within a 4m (approx. 13.1 ft) horizontal radius from the vent discharge.
                (b) At least 10m (approx. 32.8 ft) from air intakes for, or openings into, accommodation or service spaces.
                [CGD 78-128, 47 FR 21208, May 17, 1982]

                § 153.352
                B/3 and 4 m venting system outlets.
                A B/3 or 4 m venting system outlet must:
                (a) Discharge vertically upwards; and

                (b) Prevent precipitation from entering the vent system.

                § 153.353
                High velocity vents.
                The discharge point of a B/3 or 4m venting system must be located at least 3m (approx. 10 ft) above the weatherdeck or walkway if:
                (a) The discharge is a vertical, unimpeded jet;
                (b) The jet has a minimum exit velocity of 30 m/sec (approx. 98.4 ft/sec); and
                (c) The high velocity vent has been approved by Commandant (CG-ENG).
                [CGD 78-128, 47 FR 21208, May 17, 1982, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 153.354
                Venting system inlet.
                A venting system must terminate in the vapor space above the cargo when the tank is filled to a 2 percent ullage and the tankship has no heel or trim.

                § 153.355
                PV venting systems.
                When Table 1 requires a PV venting system, the cargo tank must have a PV valve in its vent line. The PV valve must be located between the tank and any connection to another tank's vent line (such as a vent riser common to two or more tanks).

                § 153.358
                Venting system flow capacity.
                (a) The cross-sectional flow area of any vent system segment, including any PV or SR valve, must at no point be less than that of a pipe whose inside diameter is 6.4 cm (approx. 2.5 in.).
                (b) When Table 1 requires a closed or restricted gauging system, calculations must show that, under conditions in which a saturated cargo vapor is discharged through the venting system at the maximum anticipated loading rate, the pressure differential between the cargo tank vapor space and the atmosphere does not exceed 28 kPa gauge (approx. 4 psig), or, for independent tanks, the maximum working pressure of the tank.

                § 153.360
                Venting system restriction.
                A venting system must have no assembly that could reduce its cross-sectional flow area or flow capacity to less than that required in § 153.358.

                § 153.361
                Arrangements for removal of valves from venting systems having multiple relief valves.
                A venting system having multiple relief valves may be arranged to allow the removal of a valve (for repair, as an example) provided the venting system:
                (a) Has valves that are interlocked, so that the removal of a valve does not reduce the venting system relieving capacity below the minimum relieving capacity required by § 153.358; and
                (b) Is arranged so that cargo vapor will not escape through the opening left after a valve has been removed.
                [CGD 78-128, 47 FR 21208, May 17, 1982; 47 FR 27293, June 24, 1982]

                § 153.362
                Venting system drain.
                Unless a cargo vent system at every point is level or slopes back to the cargo tank under all conditions of heel and trim allowed under § 153.806, the cargo vent system must have a drain valve at each low point (trap) in the vent line.

                § 153.364
                Venting system supports.
                Supports for a vent system must meet § 38.10-10(c) of this chapter.

                § 153.365
                Liquid overpressurization protection.
                (a) Except as noted in paragraph (b) of this section, a containment system requiring closed or restricted gauging must:
                (1) Be designed to withstand the maximum pressure that develops during an overfill of the densest cargo endorsed for the containment system; or
                (2) Have an overflow control system that meets § 153.408; or
                (3) Meet the requirements specified by the Commandant (CG-ENG).
                (b) A containment system requiring restricted gauging, except for those cargoes that reference §§ 153.525 or 153.527, may be equipped with a spill valve that:
                (1) Meets ASTM F 1271 (incorporated by reference, see § 153.4); and

                (2) Limits the maximum pressure during liquid overfill at a specified cargo loading rate to that which the containment system is able to withstand (see §§ 153.294(b) and 152.977(b)).
                [CGD 78-128, 47 FR 21208, May 17, 1982, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983; CGD 88-032, 56 FR 35827, July 29, 1991; USCG-2000-7790, 65 FR 58463, Sept. 29, 2000]

                § 153.368
                Pressure-vacuum valves.
                (a) The pressure side of a required pressure-vacuum relief valve must begin to open only at a pressure exceeding 3.5 kPa gauge (approx. 0.5 psig).
                (b) A pressure-vacuum relief valve must meet the requirements of Subpart 162.017 of this chapter.

                § 153.370
                Minimum relief valve setting for ambient temperature cargo tanks.
                The relief valve setting for a containment system that carries a cargo at ambient temperature must at least equal the cargo's vapor pressure at 46 °C (approx. 115 °F).
                [CGD 81-078, 50 FR 21173, May 22, 1985]

                § 153.371
                Minimum relief valve setting for refrigerated cargo tanks.
                The relief valve setting for a containment system that carries a refrigerated cargo must at least equal the lesser of:
                (a) That in § 153.370; or
                (b) 110 percent of the cargo's vapor pressure at the steady state temperature obtained by a full tank of cargo with the refrigeration system operating under ambient conditions described within the definition of a refrigerated tank in § 153.2.

                § 153.372
                Gauges and vapor return for cargo vapor pressures exceeding 100 kPa (approx. 14.7 psia).
                When table 1 references this section, the containment system must have a:
                (a) Tank pressure gauge at the point where cargo flow is controlled during transfer; and
                (b) Vapor return connection.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977; 42 FR 57126, Nov. 1, 1977, as amended by CGD 81-078, 50 FR 21173, May 22, 1985]

              Cargo Gauging Systems

                § 153.400
                General requirements for gauges.
                (a) Columnar gauge glasses must not be installed on a cargo containment system.
                (b) Flat sight glasses must meet § 38.10-20(h) of this chapter.

                § 153.404
                Standards for containment systems having required closed gauges.
                When Table 1 requires a cargo's containment system to have a closed gauge, the containment system must have the following:
                (a) A permanently installed closed gauging system.
                (b) A vapor return connection.
                (c) The high level alarm described in § 153.409.
                (d) Either a closed cargo sampling system or a cargo sampling arrangement allowing the retrieval of a sample through an orifice not exceeding:
                (1) 0.635 cm (approx. 0.25 in.) diameter when the cargo's vapor pressure is 28 kPa gauge (approx. 4 psig) or less; or
                (2) 0.140 cm (approx. 0.055 in.) diameter when the cargo's vapor pressure exceeds 28 kPa (approx. 4 psig).

                § 153.406
                Standards for containment systems having required restricted gauges.
                When Table 1 requires a cargo's containment system to have a restricted gauge, the containment system must have:
                (a) A closed gauging system; or
                (b) A system that has:
                (1) A restricted gauge (e.g., a sounding tube) with an orifice diameter not exceeding 20 cm (approx. 7.8 in.);
                (2) A permanently attached gauge cover that is vapor tight when in place; and
                (3) A venting system that has either:
                (i) Lock open PV valves; or
                (ii) Valved bypasses around the PV valves.

                § 153.407
                Special requirements for sounding tube gauges.

                (a) A sounding tube installed as a restricted gauge must extend to within one meter (approx. 39.4 in.) of the bottom of the tank.

                (b) A sounding tube must not be installed on a tank whose relief valve setting exceeds 28 kPa (approx. 4 psig) unless it is specifically permitted by the Commandant (CG-ENG).
                (c) A sounding tube must have no perforations in the tube wall.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 153.408
                Tank overflow control.
                (a) When table 1 references this section, a cargo containment system must have a cargo high level alarm meeting § 153.409 and one of the following additional systems:
                (1) A second high level (cargo overflow) alarm.
                (2) A system that automatically stops cargo flow to the tank (automatic shutdown system).
                (b) The high level alarm and the cargo overflow alarm or automatic shutdown system must:
                (1) Be independent of one-another; and
                (2) Operate on loss of power.
                (c) The cargo overflow alarm or the automatic shutdown system must operate early enough to:
                (1) Stop the loading operation before the cargo tank overflows; and
                (2) Avoid surge pressures that exceed the working pressure specified in § 153.294(b).
                (d) A tank overflow must be identified with the legend “TANK OVERFLOW ALARM” in lettering as specified for the warning sign in § 153.955.
                (e) A tank overflow alarm must be audible and visible in that part of the deck where the containment systems are located and at the point where cargo loading is controlled on the tankship.
                (f) The automatic shutdown system or tank overflow alarm must be able to be checked at the tank for proper operation (for example, by electrically simulating an overfill at the tank gauge connection).
                (g) In this section, “independent” as applied to two systems means that one system will operate with a failure of any part of the other system except high level power sources and electrical feeder panels. Conduit need not be independent; the control wiring for several independent systems may be carried in a single conduit.
                [CGD 81-078, 50 FR 21173, May 22, 1985]

                § 153.409
                High level alarms.
                When Table 1 refers to this section or requires a cargo to have a closed gauging system, the cargo's containment system must have a high level alarm:
                (a) That gives an audible and visual alarm before the tank fills to 97 percent of its capacity;
                (b) That can be seen and heard where cargo transfer is controlled and on the open deck;
                (c) Whose operation can be checked prior to each loading; and
                (d) That must be marked as described in § 153.408(c)(6) with the legend “HIGH LEVEL ALARM.”
                [CGD 78-128, 47 FR 21209, May 17, 1982; 47 FR 27293, June 24, 1982]

              Cargo Temperature Control Systems

                § 153.430
                Heat transfer systems; general.
                Each cargo cooling system required by this part and each cargo heating system must:
                (a) Meet the standards of Subchapters F (Marine Engineering) and J (Electrical Engineering) of this chapter;
                (b) Have valving that enables the system to be separated from all other cooling and heating systems; and
                (c) Allow manual regulation of the system's heat transfer rate.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 21209, May 17, 1982; CGD 81-078, 50 FR 21174, May 22, 1985]

                § 153.432
                Cooling systems.
                (a) Each cargo cooling system must have an equivalent standby unit that is installed and that can be placed in operation immediately after failure of the primary cooling system.
                (b) Each tankship that has a cargo tank with a required cooling system must have a manual that contains:

                (1) A piping diagram for the cooling system; and

                (2) Instructions for changing over to the standby system described in paragraph (a) of this section.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 21209, May 17, 1982]

                § 153.434
                Heat transfer coils within a tank.
                When a cargo tank contains any quantity of cargo, a cargo cooling or heating system having coils within the tank must keep the heat transfer fluid at a pressure greater than the pressure exerted on the heating or cooling system by the cargo.
                [CGD 78-128, 47 FR 21209, May 17, 1982]

                § 153.436
                Heat transfer fluids: compatibility with cargo.
                A heat transfer fluid separated from the cargo by only one wall (for example, the heat transfer fluid in a coil within a tank) must be compatible with the cargo under the standards prescribed for compatibility between two cargoes in Part 150 of this chapter.
                [CGD 81-078, 50 FR 21174, May 22, 1985]

                § 153.438
                Cargo pressure or temperature alarms required.
                (a) Each refrigerated tank must have:
                (1) An alarm that operates when the cargo's pressure exceeds the vapor pressure described in § 153.371(b); or
                (2) An alarm that operates when the cargo's temperature exceeds the steady state temperature described in § 153.371(b).
                (b) The alarm must give an audible and visual signal on the bridge and at the cargo control station.
                (c) The cargo pressure or temperature alarm must be independent of other cargo pressure or temperature sensing arrangements.

                § 153.440
                Cargo temperature sensors.
                (a) Except as prescribed in paragraph (c) of this section, when Table 1 refers to this section, the containment system must meet the following requirements:
                (1) A heated or refrigerated cargo tank must have a remote reading thermometer sensing the temperature of the cargo at the bottom of the tank.
                (2) A refrigerated tank must have a remote reading second thermometer near the top of the tank and below the maximum liquid level allowed by § 153.981.
                (3) Unless waived under § 153.491(a), a cargo tank endorsed to carry a Category A, B, or C NLS cargo must have a thermometer whose temperature reading is no greater than the temperature of the cargo at a level above the tank bottom at least one-eighth but no more than one-half the height of the tank if the cargo is—
                (i) A Category A NLS or a Category B NLS having a viscosity of at least 25 mPa.s at 20 °C;
                (ii) A Category C NLS having a viscosity of at least 60 mPa.s at 20 °C; or
                (iii) A Category A, B, or C NLS that has a melting point greater than 0 °C.
                (b) A readout for each remote thermometer required by this section must be at the point where cargo transfer is controlled.
                (c) A portable thermometer may be substituted for the equipment required in paragraphs (a) and (b) of this section if—
                (1) Table 1 allows open gauging with the cargo; or
                (2) Table 1 allows restricted gauging with the cargo, and the portable thermometer is designed to be used through the containment system's restricted gauging system.
                [CGD 78-128, 47 FR 21209, May 17, 1982, as amended by CGD 81-101, 52 FR 7781, Mar. 12, 1987; CGD 81-101, 53 FR 28974, Aug. 1, 1988 and 54 FR 12629, Mar. 28, 1989]

              Special Requirements for Flammable or Combustible Cargoes

                § 153.460
                Fire protection systems.
                Each self-propelled ship and each manned non-self-propelled ship must meet the following:
                (a) With the exception of the vent riser, each part of a cargo containment system exposed on the weatherdeck must be covered by the fire protection system listed beside the cargo in Table 1 and described in the footnotes to Table 1.

                (b) The Commandant (CG-ENG) approves the substitution of a dry chemical (D) type fire protection system for an A or B type on a case by case basis.

                (c) A fire protection system required by this part must meet part 34 of this chapter or be specifically approved by the Commandant (CG-ENG).
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983; CGD 81-101, 52 FR 7781, Mar. 12, 1987]

                § 153.461
                Electrical bonding of independent tanks.
                An independent metallic cargo tank that carries a flammable or combustible cargo must be electrically bonded to the tankship's hull.

                § 153.462
                Static discharges from inert gas systems.
                An inert gas system on a tank that carries a flammable or combustible cargo must not create static arcing as the inert gas is injected into the tank.

                § 153.463
                Vent system discharges.
                The discharge of a venting system must be at least 10 m (approx. 32.8 ft) from an ignition source if:
                (a) The cargo tank is endorsed to carry a flammable or combustible cargo; and
                (b) Table 1 requires the cargo to have a PV venting system.

                § 153.465
                Flammable vapor detector.
                (a) A tankship that carries a flammable cargo must have two vapor detectors that meet § 35.30-15(b) of this chapter.
                (b) At least one of the vapor detectors in paragraph (a) of this section must be portable.

                § 153.466
                Electrical equipment.
                A tankship carrying a flammable or combustible cargo under this part must meet subchapter J of this chapter.

              Design and Equipment for Pollution Control

                Source:
                Sections 153.470 through 153.491 appear at CGD 81-101, 52 FR 7781, Mar. 12, 1987, unless otherwise noted.

                § 153.470
                System for discharge of NLS residue to the sea: Categories A, B, C, and D.
                Unless waived under § 153.491, each ship that discharges Category A, B, or C NLS residue, or Category D NLS residue not diluted to 1/10th of its original concentration, into the sea under §§ 153.1126 and 153.1128 must have an NLS residue discharge system meeting the following:
                (a) Minimum diameter of an NLS residue discharge outlet. The outlet of each NLS residue discharge system must have a diameter at least as great as that given by the following formula:

                  EC13NO91.044

                  where:

                  D = Minimum diameter of the discharge outlet in meters.
                  Qd = Maximum rate in cubic meters per hour at which the ship operator wishes to discharge slops (note: Qd affects the discharge rate allowed under § 153.1126(b)(2)).
                  L = Distance from the forward perpendicular to the discharge outlet in meters.
                  φ = The acute angle between a perpendicular to the shell plating at the discharge location and the direction of the average velocity of the discharged liquid.

                (b) Location of an NLS residue discharge outlet. Each NLS residue discharge outlet must be located—
                (1) At the turn of the bilge beneath the cargo area; and
                (2) Where the discharge from the outlet is not drawn into the ship's seawater intakes.
                (c) Location of dual NLS residue discharge outlets. If the value of 6.45 for K is used in § 153.1126(b)(2), the NLS residue discharge system must have two outlets located on opposite sides of the ship.
                [CGD 81-101, 52 FR 7781, Mar. 12, 1987, as amended by CGD 81-101, 53 FR 28974, Aug. 1, 1988 and 54 FR 12629, Mar. 28, 1989; CGD 95-028, 62 FR 51209, Sept. 30, 1997]

                § 153.480
                Stripping quantity for Category B and C NLS tanks on ships built after June 30, 1986: Categories B and C.
                Unless waived under § 153.491, Category B and C NLS cargo tanks on each ship built after June 30, 1986 must have stripping quantities determined under § 153.1604 that are less than—
                (a) 0.15 m3 if Category B; and
                (b) 0.35 m3 if Category C.

                § 153.481
                Stripping quantities and interim standards for Category B NLS tanks on ships built before July 1, 1986: Category B.
                Unless waived under § 153.483 or § 153.491, each Category B NLS cargo tank on ships built before July 1, 1986 must meet the following:
                (a) Unless the tank meets the interim standard provided by paragraph (b) of this section and is prewashed in accordance with § 153.1118, the tank must have a stripping quantity determined under § 153.1604 that is less than 0.35m 3.
                (b) Before October 3, 1994, the tank may have a total NLS residue determined under § 153.1608 that is less than 1.0 m3 or 1/3000th of the tank's capacity and an NLS residue discharge system meeting the following:

                (1) The system must be capable of discharging at a rate equal to or less than Q in the following formula:

                Q = K U1.4 L1.6 × 10−5 m3/hr

                  where:

                  K = 4.3, except K = 6.45 if the discharge is equally distributed between two NLS residue discharge outlets on opposite sides of the ship (see §§ 153.470(c) and 153.1126(b)).
                  L = ship's length in meters.
                  U = for a ship that is self-propelled, the minimum speed in knots specified in the approved Procedures and Arrangements Manual for discharging Category B NLS residue, but at least 7;
                  U = for a ship that is not self-propelled, the minimum speed in knots specified in the approved Procedures and Arrangements Manual for discharging Category B NLS residue, but at least 4.

                (2) The system must have equipment capable of automatically recording—
                (i) The time of day that discharge of NLS residue through the residue discharge system starts and ends; and
                (ii) The dates on which discharge begins and ends unless the equipment allows a person to enter these dates on the record manually.
                (3) Each system that has the capacity to exceed Q calculated in paragraph (b)(1) of this section must have equipment that—
                (i) Records the NLS residue flow through the system; and
                (ii) Is sufficiently accurate that its recorded values averaged over any 30 second period differ no more than 15% from the actual flow averaged over the same 30 second period.
                (4) Each system that has the capacity to exceed Q calculated under paragraph (b)(1) of this section and does not automatically control the flow rate must have—
                (i) Manual controls that enable the flow to be adjusted to the value of Q calculated in paragraph (b)(1) of this section and that must be moved through at least 25% of their total range of movement for the discharge rate to change from 0.5Q to 1.5Q; and
                (ii) A flow rate meter located where the flow is manually controlled.
                [CGD 81-101, 52 FR 7781, Mar. 12, 1987, as amended by CGD 81-101, 53 FR 28974, Aug. 1, 1988 and 54 FR 12629, Mar. 28, 1989]

                § 153.482
                Stripping quantities and interim standards for Category C NLS tanks on ships built before July 1, 1986: Category C.
                Unless waived under § 153.483 or § 153.491, each Category C NLS cargo tank on ships built before July 1, 1986 must meet the following:
                (a) Unless the tank meets the interim standard provided by paragraph (b) of this section, the tank must have a stripping quantity determined under 153.1604 that is less than 0.95 m3.
                (b) Before October 3, 1994, the tank may have a total NLS residue determined under § 153.1608 that is less than 3.0 m3 or 1/1000th of the tank's capacity.

                § 153.483
                Restricted voyage waiver for Category B and C NLS tanks on ships built before July 1, 1986: Category B and C.
                At its discretion the Coast Guard waives §§ 153.481 and 153.482 under this section and allows a ship to carry Category B and C NLS cargoes between ports or terminals in one or more countries signatory to MARPOL 73/78 if the ship's owner requests a waiver following the procedures in § 153.10 and includes—
                (a) A written pledge to—

                (1) Limit the loading and discharge of Category B and C NLS cargoes in a foreign port to those ports and terminals in countries signatory to MARPOL 73/78 and listed in accordance with paragraph (b) of this section; and

                (2) Prewash the cargo tank as required under § 153.1118 after each Category B or C NLS is unloaded unless the prewash is allowed to be omitted under § 153.1114;
                (b) A list of—
                (1) All foreign ports or terminals at which the ship is expected to load or discharge Category B or C NLS cargo, and
                (2) All foreign ports or terminals at which the ship is expected to discharge Category B or C NLS residue from the tank;
                (c) An estimate of the quantity of NLS residue to be discharged to each foreign port or terminal listed under paragraph (b)(2) of this section;
                (d) Written statements from the owners of adequate reception facilities in the ports and terminals listed in accordance with paragraph (b)(2) of this section who have agreed to take NLS residue from the ship, showing the amount of NLS residue each agrees to take; and

                (e) A written attestation from the person in charge of each port or terminal listed in accordance with paragraph (b)(1) of this section that the administration has determined the port or terminal to have adequate reception facilities for the NLS residue.

                  Note to § 153.483:
                  Certificates of Inspection and any IMO Certificates issued to ships on restricted voyage waivers indicate that while the ship carries an NLS cargo or NLS residue, it is limited to voyages between the ports or terminals listed on the certificate.

                [CGD 81-101, 52 FR 7781, Mar. 12, 1987, as amended by CGD 81-101, 53 FR 28975, Aug. 1, 1988 and 54 FR 12629, Mar. 28, 1989]

                § 153.484
                Prewash equipment.
                Unless the ship operator shows that the prewash equipment specified in this section will be available at discharge or prewash facilities or the equipment is waived under § 153.491, to have its Certificate of Inspection or Certificate of Compliance endorsed to carry a Category A NLS or a Category B or C NLS requiring viscosity or melting point information under § 153.908 (a) and (b), a ship must have the following:
                (a) For the tanks that carry the NLS, a tank washing system capable of washing all interior tank surfaces except those shielded from the washing system spray by ship's structure, and consisting of a wash water supply system and—
                (1) A fixed tank washing machine in each tank; or
                (2) A portable tank washing machine and, if required by the Coast Guard, equipment to move it during washing and when storing.
                (b) Piping, valving, and crossovers needed to arrange the cargo piping so that the wash water passes through the cargo pump and cargo piping during tank washing or discharge of tank wash water.
                (c) If the approved Procedures and Arrangements Manual specifies the hot water prewash required under 153.1108, a means of supplying water to the tank washing machine under paragraph (a) of this section at—
                (1) A temperature of at least 60 °C (140 °F) when it leaves the washing machine; and
                (2) The flow rate needed for the washing machine jets to meet paragraph (a) of this section.

                § 153.486
                Design and equipment for removing NLS residue by ventilation: Categories A, B, C, and D.
                (a) If NLS residue is to be removed from a cargo tank by ventilation, in addition to the equipment required under paragraph (b) of this section the ship must have—
                (1) Openings in the tank deck near the sump or suction point;
                (2) If the openings required by paragraph (a)(1) of this section are insufficient, an access opening for visually determining whether liquid remains in the sump area of the cargo tank after ventilation or some other means for making this determination; and
                (3) An approved Procedures and Arrangements Manual with instructions that meet § 153.490(b)(3).
                (b) Unless the ship operator shows that the ventilation equipment specified in this paragraph will be available from shore when needed, if NLS residue is to be removed from a cargo tank by ventilation, in addition to the equipment required under paragraph (a) of this section the ship must have—

                (1) Portable forced air ventilating equipment fitting the ventilation openings required in paragraph (a) of this section and able to ventilate the extremities of the tank to the extent prescribed in Appendix C of the IMO Standards for Procedures and Arrangements for the Discharge of Noxious Liquid Substances, Resolution MEPC 18(22), 1985; and

                (2) A connector that allows a fan or air supply to be connected to the hose connections for the tank at the manifold.

                  Note:
                  The Clean Air Act (42 U.S.C. 7401 et seq.) allows states to regulate emissions from tank ventilation. There may be other regulations, both local and Federal, that affect the use of tank ventilation for safety or environmental purposes.

                § 153.488
                Design and equipment for tanks carrying high melting point NLSs: Category B.
                Unless waived under § 153.491, for a ship to have its Certificate of Inspection or Certificate of Compliance endorsed allowing a tank to carry a Category B NLS with a melting point of 15 °C or more, the cargo tank must have—
                (a) An arrangement enabling the cargo to be heated before cargo transfer, using heat supplied by the ship or by another source; and
                (b) Sides and bottom separate from the ship's side or bottom shell plating.

                § 153.490
                Cargo Record Book and Approved Procedures and Arrangements Manual: Categories A, B, C, and D.
                (a) Unless waived under § 153.491, to have a Certificate of Inspection or Certificate of Compliance endorsed to carry NLS cargo, a ship must have—
                (1) If U.S., a Cargo Record Book published by the Coast Guard (OMB App. No. 1625-0094), or, if foreign, a Cargo Record Book having the same entries and format as Appendix 4 of Annex II; and
                (2) A Procedures and Arrangements Manual meeting paragraph (b) of this section and approved by—
                (i) The Coast Guard, if the ship is a United States ship or one whose Administration is not signatory to MARPOL 73/78; or
                (ii) The Administration, if the ship is one whose Administration is signatory to MARPOL 73/78.
                (b) Each Procedures and Arrangements Manual under paragraph (a)(2) of this section must include the following:

                (1) The standard format and content prescribed in Chapter 2 and Appendix D of the IMO Standards for Procedures and Arrangements for the Discharge of Noxious Liquid Substances, Resolution MEPC 18(22), 1985, or, for ships for which the only NLS carried is a Category D NLS and ships having a waiver under § 153.483 or § 153.491, the format and content prescribed by the Commandant (CG-ENG).
                (2) If the ship has a tank that carries a cargo under a waiver issued under § 153.483, procedures ensuring that—
                (i) Category B and C NLSs are discharged from the tank only in the ports or terminals listed in accordance with § 153.483(b); and
                (ii) The tank is prewashed after discharging each Category B or C NLS unless § 153.1114 allows the prewash to be omitted.

                (3) If ventilation is used to clean a tank under § 153.1102(b)(2), ventilation procedures that meet those in Appendix C of the IMO Standards for Procedures and Arrangements for the Discharge of Noxious Liquid Substances, Resolution MEPC 18(22), 1985.
                (4) If tank cleaning agents are used, quantities to use and instructions for using the cleaning agents.
                (5) If the tank has the discharge recording equipment required in § 153.481(b), procedures to ensure that no NLS residue is discharged from the tank when the recording equipment is incapacitated unless the concentration and total quantity limits for the NLS in Annex II are not exceeded.
                [CGD 81-101, 52 FR 7781, Mar. 12, 1987, as amended by CGD 81-101, 53 FR 28975, Aug. 1, 1988 and 54 FR 12629, Mar. 28, 1989; USCG-2006-25697, 71 FR 55747, Sept. 25, 2006]

                § 153.491
                Waiver of certain equipment for dedicated cargo tanks.
                (a) The Coast Guard waives §§ 153.440(a)(3), 153.480, 153.481, 153.482, and 153.488 and endorses a ship's Certificate of Inspection or Certificate of Compliance allowing a cargo tank to carry a single, specific NLS cargo and no other cargo if the ship's owner—

                (1) Requests a waiver following the procedures in § 153.10; and

                (2) Pledges in writing that while any waiver is in effect the cargo tank will—
                (i) Carry only the NLS cargo listed on the Certificate of Inspection or Certificate of Compliance;
                (ii) Carry no cargo other than the NLS; and
                (iii) Not be washed or ballasted unless the wash water or ballast water is discharged to a reception facility.
                (b) The Coast Guard waives §§ 153.470 and 153.490(a)(2) if—
                (1) The ship's owner requests a waiver following the procedures in § 153.10;
                (2) The Coast Guard has issued a waiver to each of the ship's NLS cargo tanks under paragraph (a) of this section; and
                (3) The ship's owner adds to the ship's operational manual any provisions for preventing NLS discharge specified by the Commandant (CG-ENG) as a condition for issuing the waiver.
                [CGD 81-101, 52 FR 7781, Mar. 12, 1987, as amended by CGD 81-101, 53 FR 28975, Aug. 1, 1988 and 54 FR 12629, Mar. 28, 1989]

              Special Requirements

                § 153.500
                Inert gas systems.
                When Table 1 refers to this section, a cargo containment system must have a permanent inert gas system that:
                (a) Maintains the vapor space of the containment system in an inert state by filling the vapor space with a gas that is neither reactive with the cargo nor flammable;
                (b) Has a pressure control system that:
                (1) Prevents the inert gas system from raising the cargo tank pressure to more than the relief valve setting; and
                (2) Maintains at least a 3.5 kPa gauge (approx. 0.5 psig) pressure within the containment system at all times, including cargo discharge;
                (c) Has storage for enough inerting gas to replace that normally lost while the tank's atmosphere is maintained in an inert condition (e.g. through tank breathing and relief valve leakage), but in no case an amount less than 5 percent of the tank's capacity when measured with the gas at −18 °C (approx. 0 °F) and a pressure equal to the cargo tank's relief valve setting; and
                (d) Has connections for any supplemental gas supply necessary to maintain the inert gas pressure described in paragraph (b) of this section during cargo discharge.

                § 153.501
                Requirement for dry inert gas.
                When Table 1 refers to this section, an inert gas system for the containment system must supply inert gas containing no more than 100 ppm water.

                § 153.515
                Special requirements for extremely flammable cargoes.
                When Table 1 refers to this section:
                (a) An enclosed space containing a cargo tank must have an inerting system that meets the requirements in § 153.500 applying to the inert gas system of a containment system;
                (b) Cargo discharge pumps must be of a type that does not subject the shaft gland to the cargo under pressure or that is submerged; and
                (c) The cargo tank's relief valve setting must be no less than 21 kPa gauge (approx. 3 psig).

                § 153.520
                Special requirements for carbon disulfide.
                A containment system carrying carbon disulfide must meet the following:
                (a) Each cargo pump must be of the intank type and encased within a cylindrical well that extends from the top of the tank to a point no more than 10 cm (approx. 4 in.) above the bottom of the tank.
                (b) [Reserved]
                (c) The cargo piping and venting systems must be completely independent of those for other cargo.
                (d) Pressure relief valves must be made of type 304 or 316 stainless steel.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 21209, May 17, 1982]

                § 153.525
                Special requirements for unusually toxic cargoes.
                When Table 1 refers to this section a containment system must meet the following:

                (a) Cargo piping and venting systems must be designed so that they can be separated from any containment system endorsed for a cargo not covered by this section.

                (b) A cargo tank's relief valve setting must be not less than 21 kPa gauge (approx. 3 psig).
                (c) All cargo pumps and valves located below the weatherdeck must be operable from the weatherdeck.
                (d) A heat transfer system for the cargo must:
                (1) Be independent of other ship service systems, except for other cargo heat transfer systems, and not enter the engine room;
                (2) Be totally external to the cargo containment system; or
                (3) Be approved by the Commandant (CG-ENG) for use with toxic cargoes.
                (e) The cargo must be separated from any bunkers by at least two bulkheads.
                (f) A cargo containment system must have a vapor return connection.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 21209, May 17, 1982; CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 153.526
                Toxic vapor detectors.
                (a) When Table 1 refers to this section, a tankship must have two toxic vapor detectors, at least one of which must be portable, each able to measure vapor concentrations in the range of the time weighted average (TWA) for the cargo. The portable detector may be a direct reading detector tube instrument. These vapor detectors may be combined with those required by § 153.465.
                (b) When the toxic vapor detectors required by paragraph (a) of this section are not available and the cargo referenced to this section is transferred through a cargo pumproom, the tankship must meet § 153.336(b).
                [CGD 78-128, 47 FR 21210, May 17, 1982]

                § 153.527
                Toxic vapor protection.
                When Table 1 refers to this section, a tankship must have on board for each crew member:
                (a) An emergency escape breathing apparatus (EEBA) approved by the Mining Safety and Health Administration (formerly the Mining Enforcement and Safety Administration) and the National Institute for Occupational Safety and Health, or the tankship's flag administration.
                (b) Where the emergency escape breathing apparatus does not protect the eyes from vapors, a set of goggles that either:
                (1) Meet the specifications of ANSI Practice for Occupational and Educational Eye and Face Protection, Z-87.1(1979); or
                (2) Are approved by the tankship's flag administration.
                [CGD 78-128, 47 FR 21210, May 17, 1982]

                § 153.530
                Special requirements for alkylene oxides.
                When Table 1 refers to this section, a containment system must meet the following:
                (a) Except as provided in paragraphs (b) and (c) of this section, a cargo containment system must be made of:
                (1) Stainless steel other than types 416 and 442; and
                (2) Steel.
                (b) Except as provided in paragraph (c) of this section, gaskets must be composites of spirally wound stainless steel and Teflon or similar fluorinated polymer.
                (c) The Commandant (CG-ENG) approves a cargo containment system using materials other than those described in this section for alkylene oxides on a case by case basis if:
                (1) The person wishing to have the containment system approved completes any tests prescribed by the Commandant (CG-ENG); and
                (2) The Commandant (CG-ENG) approves the results of the tests and the material for use with alkylene oxides.
                (d) The following materials are generally found unsatisfactory for gaskets, packing, insulation, and similar uses in alkylene oxide containment systems and would require extensive testing as described in paragraph (c) of this section before being approved:
                (1) Neoprene or natural rubber if it might be in contact with the alkylene oxide.
                (2) Asbestos or asbestos mixed with other materials such as with many common insulations, packing materials, and gasket materials.
                (3) Materials containing oxides of magnesium, such as mineral wools.

                (e) The tank's relief valve setting must not be less than 21 kPa gauge (approx. 3 psig).

                (f) If the containment system is equipped with a cooling system, the cooling system must:
                (1) Not compress the cargo; and
                (2) Regulate the cargo temperature automatically and allow manual regulation.
                (g) The cargo piping system must:
                (1) Comply with Part 38 of this chapter;
                (2) Be completely separate from all other systems;
                (3) Be assembled from valves, fittings, and accessories having a pressure rating of not less than 1030 kPa gauge (approx. 150 psig) (American National Standards Institute); and
                (4) Have no threaded joints.
                (h) The cargo containment system vapor space and each space listed in paragraphs (k) and (l) of this section must have continuous monitoring of oxygen concentration or have an arrangement to enable sampling with a portable oxygen analyzer.
                (i) Valve disks or disk faces, seats, and other wearing valve parts must be made of stainless steel containing no less than 11 percent chromium.
                (j) The venting system must be independent of other containment or tankship systems.
                (k) When a cargo tank is in an enclosed space, the space must have:
                (1) An inert gas system meeting the requirements that apply to the inert gas system of a containment system in § 153.500, or
                (2) A forced ventilation system meeting the requirements that apply to a cargo handling space ventilation system in § 153.312.
                (l) Cofferdams, cargo tanks, double bottom spaces, void spaces and other enclosed spaces adjacent to an integral cargo tank must have an inert gas system meeting the requirements that apply to the inert gas system of a containment system in § 153.500.
                (m) An intank pump or inert gas displacement must be used to discharge cargo.
                (n) The cargo discharge piping system must have a remotely actuated quick closing shutoff valve that meets § 153.284 at the cargo transfer hose connection.
                (o) Cargo hose must:
                (1) Have the specific approval of the Commandant (CG-ENG) for use in alkylene oxide transfer; and
                (2) Be marked “For Alkylene Oxide Transfer Only”.
                (p) All exposed parts of the cargo containment system above or on the deck, such as tank domes, cargo piping, and loading manifolds, must be covered by a water spray system that:
                (1) Operates automatically in a fire involving the cargo containment system;
                (2) Has at least two remote manual actuators, one in each emergency shutdown station required by § 153.296; and

                (3) Covers the area of application with a uniform spray of

                0.175 l/m2 sec (0.0043 gal/ft2 sec).
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 21210, May 17, 1982; CGD 82-063b, 48 FR 4782, Feb. 3, 1983; CGD 82-063b, 48 FR 39629, Sept. 1, 1983; CGD 81-078, 50 FR 21174, May 22, 1985; USCG-2014-0688, 79 FR 58284, Sept. 29, 2014]

                § 153.545
                Special requirements for liquid sulfur.
                (a) A containment system carrying liquid sulfur must have:
                (1) A cargo tank ventilation system that:
                (i) Maintains the H2S vapor concentration below 1.85 percent by volume; and
                (ii) Prevents sulfur buildup within itself; and
                (2) An alarm system designed to operate when the ventilation system blower fails.
                (b) The void spaces around a cargo tank that carries liquid sulfur must be oil tight.
                (c) A cargo tank that carries liquid sulfur and the void spaces surrounding the tank must have connections for sampling vapor.

                § 153.554
                Special requirements for acids.
                When Table 1 refers to this section:
                (a) Each containment system loading and discharge connection must have a spray shield;

                (b) Each cargo containment system must be separated from bunkers by double walls, such as a cofferdam and piping tunnels; and

                (c) Each vessel must have on board a means to determine whether cargo has leaked into the spaces adjacent to a cargo containment system.

                § 153.555
                Special requirements for inorganic acids.
                When Table 1 refers to this section, a tankship's shell plating must not be a part of the cargo tank.
                [CGD 78-128, 47 FR 21210, May 17, 1982]

                § 153.556
                Special requirements for sulfuric acid and oleum.
                (a) Except as prescribed in paragraphs (b) and (c) of this section, containment systems carrying sulfuric acid, oleum, or contaminated sulfuric acid are approved by the Commandant (CG-ENG) on a case by case basis.
                (b) A containment system carrying sulfuric acid may be:
                (1) Made of unlined steel if the cargo composition is between 70 and 80 or between 90 and 100 percent acid by weight;
                (2) Lined with lead if the cargo composition does not exceed 96 percent acid by weight; or
                (3) Lined with natural rubber or neoprene if the cargo composition does not exceed 51 percent acid by weight.
                (c) A containment system for oleum may be of unlined steel if the concentration of free sulfur trioxide in the oleum exceeds 20 percent by weight.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 153.557
                Special requirements for hydrochloric acid.
                (a) A containment system that carries hydrochloric acid must be lined with:
                (1) Natural rubber;
                (2) Neoprene; or
                (3) A material approved for hydrochloric acid tanks by the Commandant (CG-ENG).
                (b) Containment systems for contaminated hydrochloric acid are approved by the Commandant (CG-ENG) on a case by case basis.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 82-063b, 48 FR 4781, Feb. 3, 1983]

                § 153.558
                Special requirements for phosphoric acid.
                A phosphoric acid containment system must be:
                (a) Lined with natural rubber or neoprene;
                (b) Lined with a material approved for phosphoric acid tanks by the Commandant (CG-ENG); or

                (c) Made of a stainless steel that resists corrosion by phosphoric acid.

                  Note:
                  “Phosphoric acid”, as defined in § 153.2, includes phosphoric acid, superphosphoric acid, and aqueous solutions of phosphoric acid.

                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983; CGD 88-100, 54 FR 40042, Sept. 29, 1989]

                § 153.559
                Special requirements for nitric acid (less than 70 percent).
                A containment system that carries nitric acid (less than 70 percent) must be of stainless steel that resists corrosion by nitric acid.

                § 153.560
                Special requirements for Alkyl (C7-C9) nitrates.
                (a) The carriage temperature of octyl nitrates must be maintained below 100 °C (212 °F) in order to prevent the occurrence of a self-sustaining exothermic decomposition reaction.
                (b) Octyl nitrates may not be carried in a deck tank unless the tank has a combination of insulation and a water deluge system sufficient to maintain the tank's cargo temperature below 100 °C (212 °F) and the cargo temperature rise at below 1.5 °C(2.7 °F)/hour, for a fire of 650 °C (1200 °F).
                [CGD 88-100, 54 FR 40042, Sept. 29, 1989, as amended by CGD 92-100, 59 FR 17028, Apr. 11, 1994; CGD 94-900, 59 FR 45139, Aug. 31, 1994]

                § 153.565
                Special requirement for temperature sensors.
                If a cargo listed in table 1 of this part refers to this section, temperature sensors must be used to monitor the cargo pump temperature to detect overheating due to pump failures, when carrying that cargo.
                [CGD 94-900, 59 FR 45139, Aug. 31, 1994]

                § 153.602
                Special requirements for cargoes reactive with water.
                When Table 1 refers to this section, the air inlet to the pressure-vacuum valve for the cargo tank must be located at least 2m (approx. 6.6 ft) above the weatherdeck.
                [CGD 78-128, 47 FR 21210, May 17, 1982]

              Testing and Inspection

                § 153.806
                Loading information.
                Each tankship must have a manual containing information that enables the master to load and ballast the tankship while keeping structural stresses within design limits.
                [CGD 79-023, 48 FR 51009, Nov. 4, 1983]

                § 153.808
                Examination required for a Certificate of Compliance.
                Before a vessel receives either an initial or a reissued Certificate of Compliance endorsed to carry a cargo from Table 1 of this part, the vessel must call at a U.S. port for an examination during which the Officer in Charge, Marine Inspection, determines whether or not the vessel meets the requirements of this chapter.
                [CGD 81-052, 50 FR 8733, Mar. 5, 1985, as amended by CGD 95-027, 61 FR 26009, May 23, 1996]

                § 153.809
                Procedures for having the Coast Guard examine a vessel for a Certificate of Compliance.
                The owner of a foreign flag vessel wishing to have the Coast Guard conduct a Certificate of Compliance examination, as required by § 153.808, must proceed as follows:
                (a) Notify the Officer in Charge, Marine Inspection of the port where the vessel is to be inspected at least 7 days before the vessel arrives and arrange the exact time and other details of the examination. This notification is in addition to any other pre-arrival notice to the Coast Guard required by other regulations, but may be concurrent with the endorsement application in § 153.9, and must include—
                (1) The name of the vessel's first U.S. port of call;
                (2) The date that the vessel is scheduled to arrive;
                (3) The name and telephone number of the owner's local agent; and
                (4) The names of all cargoes listed in table 1 of this part that are on board the vessel.
                (b) Before the examination required by § 153.808 is begun, make certain that the following plans are on board the vessel and available to the Marine Inspector. These plans include—
                (1) A general arrangement (including the location of fire fighting, safety, and lifesaving gear);
                (2) A capacity plan;
                (3) A schematic diagram of cargo piping on deck and in tanks (including the location of all valves and pumps); and
                (4) A schematic diagram of cargo tank vent piping (including the location of relief valves and flame screens).
                [CGD 95-027, 61 FR 26009, May 23, 1996]

                § 153.812
                Inspection for Certificate of Inspection.
                The rules governing the issuance of Certificates of Inspection are contained in part 31 of this chapter.

            Subpart C—Operations

              Documents and Cargo Information

                § 153.900
                Certificates and authorization to carry a bulk liquid hazardous material.
                (a) Except as allowed in 33 CFR 151.33(a), no ship may carry a cargo of bulk liquid hazardous material or an NLS residue if the bulk liquid hazardous material or NLS is listed in Table 1 or carried under a written permission under paragraph (d) of this section unless the ship meets the following:
                (1) The cargo must be carried in a cargo tank.
                (2) If a United States ship, the ship must have a Subchapter D or I Certificate of Inspection that is endorsed to allow the cargo tank to carry the cargo.
                (3) If a foreign ship, the ship must have a Certificate of Compliance that is endorsed to allow the cargo tank to carry the cargo.

                (4) The ship must have an IMO Certificate of Fitness issued under § 153.12 that is endorsed to allow the cargo tank to carry the cargo if it is—

                (i) A United States self-propelled ship in foreign waters; or
                (ii) A United States non-self-propelled ship in the waters of another Administration signatory to MARPOL 73/78 and the cargo is a Category A, B, or C NLS.
                (b) [Reserved]
                (c) No ship may carry any bulk liquid cargo not listed in § 30.25-1 of this chapter, Table 151.05 of Part 151 of this chapter, Table 1 or Table 2 of this part, Table 4 of Part 154 of this chapter, 33 CFR 151.47, or 33 CFR 151.49 unless the cargo name is endorsed on the Certificate of Inspection or contained in a letter issued under paragraph (d) of this section.
                (d) The Coast Guard at its discretion endorses the Certificate of Inspection with the name of or issues a letter allowing the carriage of an unlisted cargo described under paragraph (c) of this section if—
                (1) The shipowner—
                (i) Requests the Coast Guard to add the cargo; and
                (ii) Supplies any information the Coast Guard needs to develop carriage requirements for the bulk liquid cargo; and
                (2) The ship—
                (i) Has a Certificate of Inspection, Certificate of Compliance, or IOPP Certificate as specified in this part;
                (ii) Meets the design and equipment requirements of this part specified by the Coast Guard; and
                (iii) Meets any additional requirements made by the Coast Guard.
                [CGD 81-101, 52 FR 7783, Mar. 12, 1987, as amended by CGD 81-101, 53 FR 28975, Aug. 1, 1988 and 54 FR 12629, Mar. 28, 1989]

                § 153.901
                Documents: Posting, availability, and alteration.
                (a) No person may operate a United States ship unless the endorsed Certificate of Inspection is readily available on the ship.
                (b) No person may operate a foreign ship unless the endorsed Certificate of Compliance or Certificate of Inspection is readily available on the ship.
                (c) No person may operate a ship under an alternative or waiver granted under this part unless the document granting the alternative or waiver is attached to the ship's Certificate of Inspection or Certificate of Compliance.
                (d) Except as allowed in paragraph (e) of this section, the Coast Guard does not accept the following if altered:
                (1) Certificates of Inspection.
                (2) Certificates of Compliance.
                (3) Certificates of Fitness, unless the alteration is by the issuing authority.
                (4) Approved Procedures and Arrangements Manuals, unless the alteration is approved by the issuing authority.
                (5) NLS Certificates.
                (e) A person wishing to change a Procedures and Arrangements Manual approved by the Coast Guard must submit a copy to the Coast Guard following the procedures for requesting an endorsed Certificate of Inspection in § 153.8.
                [CGD 81-101, 52 FR 7783, Mar. 12, 1987]

                § 153.902
                Expiration and invalidation of the Certificate of Compliance.
                (a) The Certificate of Compliance shows its expiration date.
                (b) The endorsement of a Certificate of Compliance under this part is invalid if the vessel does not have a valid IMO Certificate of Fitness.

                (c) The endorsement on a Certificate of Compliance invalidated under paragraph (b) of this section, becomes valid again once the ship has the IMO Certificate of Fitness revalidated or reissued.

                  Note:
                  See § 153.809 for procedures for having a Certificate of Compliance reissued.

                [CGD 81-101, 52 FR 7784, Mar. 12, 1987; CGD 95-072, 60 FR 50465, Sept. 29, 1995; 60 FR 54106, Oct. 19, 1995; CGD 95-027, 61 FR 26009, May 23, 1996]

                § 153.903
                Operating a United States ship in special areas: Categories A, B, and C.
                No person may operate a United States ship that carries an NLS or NLS residue in a special area unless—
                (a) The ship's Certificate of Inspection is endorsed in accordance with § 153.30; and

                (b) The ship meets the operating requirements applying to special areas in Regulations 5, 5A, 8 and the Standards for Procedures and Arrangements of Annex II.
                [CGD 81-101, 52 FR 7784, Mar. 12, 1987]

                § 153.904
                Limitations in the endorsement.
                No person may operate a tankship unless that person complies with all limitations in the endorsement on the tankship's Certificate of Inspection or Certificate of Compliance.
                [CGD 81-052, 50 FR 8734, Mar. 5, 1985]

                § 153.905
                Regulations required to be on board.
                No person may operate a tankship unless the most recent editions of this part, and parts 35 and 150 of this chapter are on board.
                [CGD 78-128, 47 FR 21210, May 17, 1982]

                § 153.907
                Cargo information.
                (a) The master shall ensure that the following information for each cargo carried under this part is readily available to those on the tankship engaged in cargo operations:
                (1) The name of the cargo as listed in table 1.
                (2) A description of the cargo's appearance and color.
                (3) Hazards in handling the cargo.
                (4) Any special handling procedures for the cargo, such as inerting.
                (5) Procedures to follow if the cargo spills or leaks.
                (6) Procedures for treating a person exposed to the cargo.
                (7) A list of fire fighting procedures and extinguishing agents effective with cargo fires.
                (8) Shipper's name.
                (9) Loading point.
                (10) Approximate quantity of cargo.
                (11) Tank in which the cargo is located.
                (12) The name of an agent in the United States authorized to accept service of legal process for the vessel.
                (b) The master shall make sure that the following information for cargoes other than those carried under this part is readily available on the tankship:
                (1) The name of the cargo as listed in Table 4 of Part 154 of this chapter or § 30.25-1 of this chapter if the cargo is listed in one of these two tables.
                (2) The name of the cargo prescribed in the letter authorizing carriage of the cargo under § 153.900(d) if the cargo is a hazardous or flammable cargo authorized for carriage under that section.
                (3) The shipper's name for the cargo and the name of the shipper if the cargo is neither a hazardous nor flammable cargo.
                [CGD 81-078, 50 FR 21174, May 22, 1985, as amended by CGD 88-100, 54 FR 40042, Sept. 29, 1989]

                § 153.908
                Cargo viscosity and melting point information; measuring cargo temperature during discharge: Categories A, B, and C.
                (a) The person in charge of the ship may not accept a shipment of a Category A, B, or C NLS cargo having a reference to this paragraph in the “Special Requirements” column of Table 1 unless the person has, from the cargo's manufacturer or the person listed as the shipper on the bill of lading, a written statement of the following:
                (1) For Category A or B NLS, the cargo's viscosity at 20 °C in mPa.s and, if the cargo's viscosity exceeds 25 mPa.s at 20 °C, the temperature at which the viscosity is 25 mPa.s.
                (2) For Category C NLS, the cargo's viscosity at 20 °C in mPa.s and, if the cargo's viscosity exceeds 60 mPa.s at 20 °C, the temperature at which the viscosity is 60 mPa.s. If the cargo's viscosity varies from shipment to shipment, the maximum viscosity and maximum temperature values may be supplied.
                (b) The person in charge of the ship may not accept a shipment of a Category A, B, or C cargo having a reference to this paragraph in the “Special Requirements” column of Table 1 unless the person has a written statement of the cargo's melting point in °C from the cargo's manufacturer or the person listed as the shipper on the bill of lading. If the cargo's melting point varies from shipment to shipment, the highest melting point may be supplied.

                (c) The person in charge of the ship shall ensure that the cargo temperature is read and recorded in the Cargo Record Book following the procedures in paragraph (d) of this section when a cargo having a reference to paragraph (a) or (b) of this section in the “Special Requirements” column of Table 1 is unloaded.
                (d) The cargo temperature measured in paragraph (c) of this section must be made using the following procedure:
                (1) Each reading must be made with the sensor or thermometer required by § 153.440(a)(3) or (c). If a portable thermometer is used, it must be located as prescribed for the temperature sensor in § 153.440(a)(3).
                (2) A total of 2 readings must be made, the first reading to be made no more than 30 minutes after cargo transfer begins and the second reading no more than 30 minutes before the main cargo pump is shut down.
                (3) The cargo's temperature is the average of the 2 readings made under paragraph (d)(2) of this section.
                [CGD 81-101, 52 FR 7784, Mar. 12, 1987]

                § 153.909
                Completing the Cargo Record Book and record retention: Categories A, B, C, and D.
                (a) The person in charge of a ship shall ensure that the Cargo Record Book required under § 153.490 is completed immediately after any of the following occurs:
                (1) An NLS cargo is loaded.
                (2) An NLS cargo is transferred between tanks on a ship.
                (3) An NLS cargo is unloaded from a tank.
                (4) A tank that last carried an NLS cargo is prewashed under this part.
                (5) A tank that last carried an NLS cargo is washed, except as reported under paragraph (a)(4) of this section, cleaned, or ventilated.
                (6) Washings from a tank that last carried an NLS cargo are discharged to the sea.
                (7) Tanks that last carried an NLS cargo are ballasted.
                (8) Ballast water is discharged to the sea from a cargo tank that last carried an NLS.
                (9) An NLS cargo or NLS residue is discharged to the sea by accident or except as allowed by this part.
                (10) A Surveyor is present during an operation that this part requires the presence of a Surveyor.
                (11) NLS residue or NLS cargo is transferred from cargo pumproom bilges or transferred to an incinerator.
                (12) A waiver is issued to the ship, ship owner, ship operator, or person in charge of the ship under this part.
                (13) The concentration of a Category A NLS residue is measured under § 153.1120(a).
                (14) Any discharge recording equipment required by § 153.481(b)(2) fails.
                (b) The person in charge of the ship shall ensure that the Cargo Record Book is on board and readily available for inspection and copying by the Coast Guard and when the ship is a U.S. ship in the waters of a foreign country whose Administration is signatory to MARPOL 73/78, the authorities of that country.
                (c) Each officer in charge of an operation listed under paragraph (a) of this section, and each Surveyor observing an operation that this part requires the presence of a Surveyor, shall attest to the accuracy and completeness of each Cargo Record Book entry concerning those operations by signing after each entry.
                (d) After all the entries on a page of the Cargo Record Book are completed, and if the person in charge of the ship agrees with the entries, the person in charge of the ship shall sign the bottom of that page.
                (e) The ship owner or operator shall ensure that—
                (1) Each Cargo Record Book is retained on board the ship for at least 3 years after the last entry; and
                (2) Each discharge recording required by § 153.1126(b)(1) is retained on board the ship for at least three years.
                [CGD 81-101, 52 FR 7784, Mar. 12, 1987]

                § 153.910
                Cargo piping plan.
                No person may operate a tankship unless the tankship has a cargo piping plan that:
                (a) Shows all cargo piping on the tankship;
                (b) Shows all cargo valving, pumps, and other equipment that is used during cargo transfer;
                (c) Shows the cargo tanks;

                (d) Shows any modifications necessary to a containment system that is to be separated as prescribed under Part 150 of this subchapter, or §§ 153.525 and 153.1020;
                (e) Emphasizes the piping and equipment described in paragraphs (a), (b) and (d) of this section by using contrasting colors, line widths, or similar methods; and
                (f) Shows the cargo loading rates chosen under § 153.365(b) for all applicable cargo lines.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 21210, May 17, 1982]

                § 153.912
                Certificate of inhibition or stabilization.
                (a) When a cargo in Table 1 is referred to this section, no person may operate a tankship carrying the cargo without a written certification, carried on the bridge of the tankship, from the shipper that the cargo is:
                (1) Inhibited; or
                (2) Stabilized.
                (b) The certification required by this section must contain the following information:
                (1) Whether the cargo is inhibited or stabilized.
                (2) The name and concentration of the inhibitor or stabilizer.
                (3) The date the inhibitor or stabilizer was added.
                (4) The length of time the inhibitor or stabilizer is effective.
                (5) Any temperature limitations qualifying the inhibitor's or stabilizer's effective lifetime.
                (6) The action to be taken should the duration of the voyage exceed the inhibitor's or stabilizer's useful life.

              General Cargo Operational Requirements

                § 153.920
                Cargo quantity limitations.
                (a) No person may load a cargo tank or operate a tankship that carries a cargo tank containing in excess of 1250 m3 (approx. 44,138 ft3) of cargo requiring a type I containment system.
                (b) No person may load a cargo tank or operate a tankship that carries a cargo tank containing in excess of 3000 m3 (approx. 105,932 ft3) of a cargo requiring a type II containment system.

                § 153.921
                Explosives.
                No person may load, off-load, or carry a cargo listed in this part on board a vessel that carries explosives unless he has the prior written permission of the Commandant (CG-ENG).
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 153.923
                Inerting systems.
                The master shall ensure that the inert gas systems for any cargo that this part requires to be inerted are operating correctly.

              General Vessel Safety

                § 153.930
                Cargo antidotes.

                No person may operate a tankship that carries a cargo listed in Table 1 unless the tankship has on board the antidotes described for the cargo in the Medical First Aid Guide for Use in Accidents Involving Dangerous Goods, published by IMO.

                § 153.931
                Obstruction of pumproom ladderways.
                The master shall ensure that all cargo pumproom ladderways are unobstructed at all times.

                § 153.932
                Goggles and protective clothing.
                (a) The master shall ensure that each person wear a face mask or tight-fitting goggles for eye protection against splashing or spraying liquids if that person is:
                (1) Sampling cargo;
                (2) Transferring cargo;
                (3) Making or breaking a cargo hose connection;
                (4) Gauging a cargo tank; or
                (5) Opening a cargo tank by opening a Butterworth hatch, ullage hatch, cargo tank hatch, or similar opening.
                (b) The master shall ensure that each person wear a face mask or tight-fitting goggles for eye protection against splashing or spraying liquids if the person is:
                (1) In the area of the deck where the cargo tanks, cargo piping, and cargo pumprooms are located while a cargo transfer is taking place; or

                (2) In a cargo pumproom, an enclosed space adjacent to a cargo tank, or a space containing part of a cargo containment system.
                (c) The master shall ensure that each person in paragraphs (a) and (b) of this section wear any additional protective clothing the master believes necessary to protect the person from the cargo's hazards.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 21210, May 17, 1982]

                § 153.933
                Chemical protective clothing.
                When table 1 refers to this section, the following apply:
                (a) The master shall ensure that the following chemical protective clothing constructed of materials resistant to permeation by the cargo being handled is worn by all personnel engaged in an operation listed in paragraph (b) of this section:
                (1) Splash protective eyewear.
                (2) Long-sleeved gloves.
                (3) Boots or shoe covers.
                (4) Coveralls or lab aprons.

                  Note:
                  “Guidelines for the Selection of Chemical Protective Clothing”, Third Edition, 1987, available from the American Conference of Governmental Industrial Hygienists, 1330 Kemper Meadow Drive, Cincinnati, OH 45240-1634, provides information on the proper clothing for the cargo being handled.

                (b) This section applies during the following operations:
                (1) Sampling cargo.
                (2) Transferring cargo.
                (3) Making or breaking cargo hose connections.
                (4) Gauging a cargo tank, unless gauging is by closed system.
                (5) Opening cargo tanks.
                (c) Coveralls or lab aprons may be replaced by splash suits or aprons constructed of light weight or disposable materials if, in the judgment of the master—
                (1) Contact with the cargo being handled is likely to occur only infrequently and accidentally; and
                (2) The splash suit or apron is disposed of immediately after contamination.
                (d) Splash protective eyewear must be tight-fitting chemical-splash goggles, face shields, or similar items intended specifically for eye protection from chemical splashing or spraying.
                (e) The master shall ensure that each person in the vicinity of an operation listed in paragraph (b) of this section or in the vicinity of tanks, piping, or pumps being used to transfer the cargo wears splash protective eyewear under paragraph (d) of this section.
                [CGD 88-100, 54 FR 40042, Sept. 29, 1989, as amended by USCG-1999-6216, 64 FR 53227, Oct. 1, 1999]

                § 153.934
                Entry into spaces containing cargo vapor.
                (a) No person may enter a cargo tank, cargo handling space, pumproom or enclosed space in the cargo area without the permission of the master.
                (b) Before permitting anyone to enter a cargo tank, cargo handling space, pumproom or other enclosed space in the cargo area, the master shall make sure that:
                (1) The space is free of toxic vapors and has sufficient oxygen to support life; or
                (2) Those entering the space wear protective equipment with self-contained breathing apparatus as described in § 153.214(b) and an officer closely supervises the entire operation.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 21210, May 17, 1982]

                § 153.935
                Opening of tanks and cargo sampling.
                (a) Except as provided in paragraph (b) of this section, the master shall ensure that all cargo tank hatches, ullage openings, and tank cleaning openings are tightly closed at all times.
                (b) The master may not authorize the opening of a cargo tank, except:
                (1) To clean a tank;
                (2) To transfer a cargo that Table 1 allows in a containment system having an open gauging system;
                (3) To sample a cargo that Table 1 allows in a containment system having an open gauging system; or
                (4) To sample a cargo that Table 1 allows in a containment system having a restricted gauging system if:
                (i) The tank is not being filled during sampling;

                (ii) The vent system has relieved any pressure in the tank;

                (iii) The person sampling the cargo wears the protective clothing required during cargo transfer; and
                (iv) The tank is closed tightly following sampling.
                (c) The master shall make sure that cargoes requiring closed gauging are sampled only through the controlled sampling arrangement required by § 153.404(d).
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 21210, May 17, 1982]

                § 153.935a
                Storage of cargo samples.
                (a) The master shall make sure that any cargo samples are stored in:
                (1) A designated and ventilated space in the cargo area of the vessel; or
                (2) An area approved by the Commandant (CG-ENG) or the tankship's flag administration for the stowage of cargo samples.
                (b) The master shall make sure that cargo sample bottles are stored:
                (1) In a way that prevents shifting of the sample bottles when the vessel is at sea;
                (2) In bins or containers constructed of materials that are resistant to the cargo samples; and
                (3) Apart from other sample bottles containing incompatible liquids (See part 150, subpart A).
                [CGD 78-128, 47 FR 21211, May 17, 1982, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 153.936
                Illness, alcohol, drugs.
                The master shall ensure that no person participates in cargo related operations who appears to be intoxicated by alcohol or drugs or to be so ill as to be unfit for the particular operation.

              Marking of Cargo Transfer Hose

                § 153.940
                Standards for marking of cargo hose.
                No person may mark a hose assembly as meeting the standards of this section unless the hose assembly meets the following requirements:
                (a) Each hose assembly must have:
                (1) Fully threaded connections;
                (2) Flanges that meet ANSI B16.5, B16.24, or B16.31; or
                (3) Class 1 quick-disconnect couplings that comply with ASTM F 1122 (incorporated by reference, see § 153.4), and are marked “C1-1.”
                (b) Each hose assembly must be marked with the:
                (1) Date of manufacture;
                (2) Working pressure described in paragraph (d) of this section;
                (3) Date of the last test made as prescribed in paragraph (e) of this section; and
                (4) Manufacturer's recommended maximum and minimum temperatures.
                (c) A cargo hose assembly must have a minimum bursting pressure as stated by the manufacturer of at least 5152 kPa gauge (approx. 750 psig).
                (d) The working pressure marked on a hose must meet the following:
                (1) Be at least 1030 kPa gauge (approx. 150 psig).
                (2) Not exceeded 20 per cent (one-fifth) of the manufacturer's stated bursting pressure.
                (3) Not exceed the manufacturer's recommended working pressure.
                (4) Not exceed the test pressure used in the latest test under paragraph (e)(3) of this section.
                (e) A cargo hose assembly must be inspected and tested by placing it in a straight, horizontal position so that its entire external surface is accessible. It must be ascertained that the hose assembly:
                (1) Has no loose covers, kinks, bulges, soft spots, and no gouges, cuts, or slashes that penetrate any hose reinforcement;
                (2) Has no external and, to the extent internal inspection is possible with both ends of the hose open, no internal deterioration; and
                (3) Does not burst, bulge, leak, or abnormally distort under static liquid pressure at least as great as the recommended working pressure.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 21211, May 17, 1982; CGD 88-032, 56 FR 35827, July 29, 1991; USCG-2000-7790, 65 FR 58463, Sept. 29, 2000; USCG-2014-0688, 79 FR 58284, Sept. 29, 2014]

              Cargo Transfer Procedures

                § 153.953
                Signals during cargo transfer.
                The master shall ensure that:

                (a) The tankship displays a red flag in the day and a red light at night when transferring cargo while fast to a dock;
                (b) The tankship displays a red flag when transferring cargo while at anchor; and
                (c) The red flag or the red light is visible from all sides of the tankship.

                § 153.955
                Warning signs during cargo transfer.
                (a) When transferring cargo while fast to a dock or at anchor in port, the master shall ensure that the tankship displays a warning sign at the gangway facing the shore so that it may be seen from the shore and another warning sign facing outboard toward the water so that it may be seen from the water. (See figure 1).
                (b) Except as provided in paragraph (f) of this section, each warning sign must have the following legends:
                (1) Warning.
                (2) Dangerous Cargo.
                (3) No Visitors.
                (4) No Smoking.
                (5) No Open Lights.
                (c) Each letter must be block style, black on a white background.
                (d) Each letter must:
                (1) Be 7.5 cm (approx. 3 in.) high;
                (2) Be 5 cm (approx. 2 in.) wide except for “M” and “W” which must be 7.5 cm (approx. 3 in.) wide and the letter “I” which may be 1.3 cm (approx. 1/2 in.) wide; and

                  EC02FE91.082

                (3) Have 1.3 cm (approx. 1/2 in.) stroke width.
                (e) The spacing must be:
                (1) 1.3 cm (approx. 1/2 in.) between letters of the same word;
                (2) 5 cm (approx. 2 in.) between words;
                (3) 5 cm (approx. 2 in.) between lines; and
                (4) 5 cm (approx. 2 in.) at the borders of the sign.
                (f) Except as described in § 153.1045, the legends “No Smoking” and “No Open Lights” are not required when the cargoes on board the tankship are neither flammable nor combustible.

                § 153.957
                Persons in charge of transferring liquid cargo in bulk or cleaning cargo tanks.
                (a) The owner and operator of the vessel, and his or her agent, and each of them, shall ensure that—
                (1) Enough “Tankerman-PICs” or restricted “Tankerman-PICs”, and “Tankerman-Assistants”, authorized for the classification of cargo carried, are on duty to safely transfer liquid cargo in bulk or to safely clean cargo tanks;

                (2) Each transfer of liquid cargo in bulk and each cleaning of a cargo tank is supervised by a qualified person designated as a person in charge of the transfer or the cleaning under Subpart C of 33 CFR part 155;
                (3) When cargo regulated under this part is due for transfer, the person in charge of the transfer has received special training in the particular hazards associated with the cargo and in all special procedures for its handling; and
                (4) On each foreign vessel, the person in charge understands his or her responsibilities as described in this subchapter.
                (b) Upon request by the Officer in Charge, Marine Inspection, in whose zone the transfer will take place, the owner and operator of the vessel, and his or her agent, and each of them, shall provide documentary evidence that the person in charge has received the training specified by paragraph (a)(3) of this section and is capable of competently performing the procedures necessary for the cargo.
                [CGD 79-116, 60 FR 17158, Apr. 4, 1995]

                § 153.959
                Approval to begin transfer operations required.
                No person may make connections for cargo transfer or transfer cargo unless he has authorization from the person in charge of cargo transfer.

                § 153.964
                Discharge by gas pressurization.
                The person in charge of cargo transfer may not authorize cargo discharge by gas pressurization unless:
                (a) The tank to be offloaded has an SR or PV venting system;
                (b) The pressurization medium is either the cargo vapor or a nonflammable, nontoxic gas inert to the cargo; and
                (c) The pressurizing line has:
                (1) A pressure reducing valve whose setting does not exceed 90% of the tank's relief valve setting and a manual control valve between the pressure reducing valve and the tank; or
                (2) For an inert gas medium:
                (i) A safety relief valve with a cross sectional flow area at least equal to that of the pressurizing line and whose relieving pressure does not exceed 90 percent of the tank's relief valve setting;
                (ii) A manual control valve between the safety relief valve and the tank; and
                (iii) A check valve between the manual control valve and the tank.

                § 153.966
                Discharge by liquid displacement.
                The person in charge of cargo transfer may not authorize cargo discharge by liquid displacement unless the liquid supply line to the tank has:
                (a) A safety relief or pressure reducing valve set to operate at no more than 80 percent of the tank's relief valve setting; and
                (b) A manual control valve between the tank and the supply line's safety relief valve or pressure reducing valve.

                § 153.968
                Cargo transfer conference.
                (a) Before he may begin making connections for cargo transfer, the person in charge of cargo transfer shall confer with the person supervising the cargo transfer at the facility.
                (b) The person in charge of cargo transfer shall discuss the important aspects of the transfer operation, such as the following, with the supervisor at the facility:
                (1) The products to be transferred.
                (2) The cargo loading rates marked on the cargo piping plan or the maximum safe transfer rates.
                (3) The critical or hazardous stages of the transfer operation.
                (4) The emergency procedures in case of a spill.
                (5) If the vessel is equipped with the tank overflow alarm prescribed in § 153.408(c), a procedure for shutdown of shore pumps, shore valves, and ship's valves that prevents piping system pressures from exceeding those for which the piping system is designed.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 21211, May 17, 1982; CGD 81-078, 50 FR 21174, May 22, 1985]

                § 153.970
                Cargo transfer piping.
                The person in charge of cargo transfer shall ensure that:
                (a) Cargo is transferred to or from a cargo tank only through the tankship's cargo piping system;

                (b) Vapor not returned to shore through the tankship's vapor return system is discharged at the height required for the cargo's vent riser in Table 1, and

                (c) All cargo vapor is returned to shore through the valved connection on the venting system if:
                (1) The cargo requires closed gauging, is referenced to § 153.372 or is referenced to § 153.525;
                (2) The transfer terminal has vapor return equipment; and
                (3) In his estimation the vapor return equipment is adequate to handle the vapor expected from the tank.

                § 153.972
                Connecting a cargo hose.
                The person in charge of cargo transfer may not authorize the connection of a hose to a cargo containment system unless:
                (a) He has ensured himself that the cargo will not weaken or damage the hose;
                (b) The hose is marked as meeting the standards of § 153.940;
                (c) The date of the hose's last pressure test is within one year of the date on which the hose is used to transfer cargo;
                (d) The recommended working pressure marked on a hose used for discharge meets or exceeds the working pressure marked on the cargo piping at the hose connection; and
                (e) The cargo's temperature is within the manufacturer's recommended maximum and minimum hose temperatures.

                § 153.975
                Preparation for cargo transfer.
                The person in charge of cargo transfer may not approve or continue cargo transfer unless the following conditions are met:
                (a) No fires or open flames are on deck or in compartments near the hose connections when Table 1 requires the cargo's containment system to have a fire protection system.
                (b) Any electrical bonding of the tankship to the transfer facility is made before the cargo transfer piping is joined.
                (c) Any supplemental inert gas supply necessary to maintain the 3.5 kPa gauge (approx. 0.5 psig) pressure in the tank during offloading (see § 153.500) is connected to the inert gas pressure control system.
                (d) The transfer connections have enough slack to allow for vessel movement.
                (e) The transfer connections are supported by tackles.
                (f) The cargo high level alarms, tank overflow alarms and overflow control systems are functioning correctly when the cargo is loaded.
                (g) Joints and couplings are gasketed and mated tightly.
                (h) Flanges are bolted tightly.
                (i) No repair work is underway in areas where cargo or cargo vapors may collect.
                (j) Cargo and sea valves are properly set, with those sea valves connected to cargo piping lashed or sealed shut.
                (k) Venting system bypass valves are set for cargo transfer and are operating properly.
                (l) All scuppers are plugged.
                (m) Smoking is limited to safe places.
                (n) Fire fighting and safety equipment is ready.
                (o) He is in effective communication with the transfer terminal.
                (p) The person in charge of the transfer terminal has acknowledged that he is ready to transfer.
                (q) Pressures within the cargo transfer and containment systems do not exceed the pressure ranges for which the transfer hose and containment systems are designed.
                (r) No vessels that would hazard cargo transfer are alongside the tankship.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 21211, May 17, 1982]

                § 153.976
                Transfer of packaged cargo or ship's stores.
                The person in charge of cargo transfer may neither begin nor continue the transfer of a flammable or combustible cargo while packaged cargo or ship's stores are transferred unless transfer of the packaged cargo or ship's stores does not hazard transfer of the flammable or combustible cargo.

                § 153.977
                Supervision of cargo transfer.
                The person in charge of cargo transfer shall:

                (a) Supervise the operation of cargo system valves;
                (b) Monitor the cargo loading rate to ensure it does not exceed that stated on the cargo piping plan; and
                (c) Monitor the cargo level in the tanks to make sure they do not overflow.
                [CGD 78-128, 47 FR 21211, May 17, 1982]

                § 153.979
                Gauging with a sounding tube.
                (a) No person may remove the cover of a sounding tube unless he has authorization from the person in charge of cargo transfer.
                (b) The person in charge of cargo transfer may not authorize removal of the cover from a sounding tube gauge unless all tank pressure has been relieved through the tank's venting system.

                § 153.980
                Isolation of automatic closing valves.
                The person in charge of cargo transfer may isolate automatic closing valves described in § 153.408(b) from a cargo containment system if the following conditions are met:
                (a) The containment system carries products to which § 153.408 does not apply.
                (b) The valves are isolated by:
                (1) Removing the valves; or
                (2) Installing removable pipes and blind flanges to by-pass the valves.
                [CGD 78-128, 47 FR 21211, May 17, 1982]

                § 153.981
                Leaving room in tank for cargo expansion.
                The person in charge of cargo transfer shall ensure that the amount of cargo in a tank does not exceed the tank's capacity at any ambient temperature between −18 °C (approx. 0 °F) and 46 °C (approx. 115 °F).

                § 153.983
                Termination procedures.
                Upon completion of the transfer operation, the person in charge of cargo transfer shall ensure that:
                (a) The cargo transfer connections are closed off;
                (b) The transfer lines and hoses are drained of cargo, either into the tank or back to the transfer terminal;
                (c) Any electrical bonding between the vessel and the shore facility is broken only after the cargo hose is disconnected and all spills removed; and
                (d) Each vent system is returned to its nonloading configuration.

              Special Cargo Procedures

                § 153.1000
                Special operating requirements for cargoes reactive with water.
                When Table 1 refers to this section, the master must ensure that the cargo:
                (a) Is carried only in a containment system completely isolated from any systems containing water, such as slop tanks, ballast tanks, cargo tanks containing slops or ballast, their vent lines or piping; and
                (b) Is separated by double walls, such as cofferdams and piping tunnels, from any system containing water, as for example those described in paragraph (a) of this section.

                § 153.1002
                Special operating requirements for heat sensitive cargoes.
                When Table 1 refers to this section, the master shall make sure that:
                (a) The cargo temperature is maintained below the temperature that would induce polymerization, decomposition, thermal instability, evolution of gas or reaction of the cargo;
                (b) Any heating coils in the cargo tank are blanked off; and
                (c) The cargo is not carried in uninsulated deck tanks.
                [CGD 78-128, 47 FR 21211, May 17, 1982]

                § 153.1003
                Prohibited carriage in deck tanks.
                When Table 1 refers to this section, cargoes may not be carried in deck tanks.
                [CGD 95-900, 60 FR 34050, June 29, 1995]

                § 153.1004
                Inhibited and stabilized cargoes.
                (a) Before loading a cargo containment system with a cargo referenced to this section in Table 1, the person in charge of cargo transfer shall make sure that the cargo containment system is free of contaminants that could:

                (1) Catalyze the polymerization or decomposition of the cargo; or

                (2) Degrade the effectiveness of the inhibitor or stabilizer.
                (b) The master shall make sure that the cargo is maintained at a temperature which will prevent crystallization or solidification of the cargo.
                [CGD 78-128, 47 FR 21211, May 17, 1982]

                § 153.1010
                Alkylene oxides.
                (a) Before each loading of a cargo containment system with a cargo referenced to this section in Table 1, the person in charge of cargo transfer shall:
                (1) Unless the tankship is equipped with independent cargo piping that meets paragraph (d) of this section:
                (i) Obtain verification from a Coast Guard Marine Inspector or from a representative of the tankship's flag administration that separation of the alkylene oxide piping system complies with alkylene oxide handling plans approved by the Coast Guard or the tankship's flag administration; and
                (ii) Make sure that each spectacle flange and blank flange connection that is required to separate alkylene oxide piping systems from other systems has a wire and seal attached by a Coast Guard Marine Inspector or a representative of the tankship's flag administration.
                (2) Purge the containment system until the oxygen content of the cargo tank is less than 2% by volume.
                (b) The person in charge of an alkylene oxide cargo transfer shall ensure that:
                (1) No alkylene oxide vapor or liquid is released to the atmosphere during cargo transfer;
                (2) No vapor return system connected to an alkylene oxide containment system is at the same time connected to another containment system;
                (3) Alkylene oxide is discharged only by an intank cargo pump or inert gas displacement;
                (4) Transfer hose is approved by the Commandant (CG-ENG) under § 153.530(o) for alkylene oxide transfer and is marked “For Alkylene Oxide Transfer Only”; and
                (5) A water hose is laid out on deck with water pressure to the nozzle, and all alkylene oxide spillages are washed away immediately.
                (c) While alkylene oxides are onboard the vessel, the master shall make sure that the oxygen content of the vapor space above the alkylene oxide and those spaces specified in § 153.530 (k) and (l) is maintained below 2% by volume.
                (d) Tankships with independent piping for alkylene oxides must have onboard:
                (1) Alkylene oxide handling plans approved by the Coast Guard or the tankship's flag administration; and
                (2) Certification from the Coast Guard or the tankship's flag administration that the cargo piping for alkylene oxides is independent.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 21211, May 17, 1982; CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 153.1011
                Changing containment systems and hoses to and from alkylene oxide service.
                (a) The person in charge of cargo transfer shall make sure that:
                (1) No alkylene oxide is loaded into a containment system that last carried a cargo other than an alkylene oxide unless the containment system has been cleaned and inspected to make sure it is in good condition with no heavy rust accumulations or traces of previous cargoes;
                (2) No alkylene oxide is loaded into a containment system that within the previous three loadings carried a cargo listed in paragraph (b) of this section unless the containment system has been cleaned to the satisfaction of a Coast Guard Marine Inspector or a person specifically authorized by the Commandant (CG-ENG) to approve alkylene oxide tank cleaning;
                (3) No cargo but an alkylene oxide is loaded into a containment system which last carried an alkylene oxide unless the containment system has been cleaned of alkylene oxide to the satisfaction of a Coast Guard Marine Inspector or person specifically authorized by the Commandant (CG-ENG) to approve alkylene oxide tank cleaning; and

                (4) No hose marked “For Alkylene Oxide Transfer Only” is used for the transfer of a cargo other than an alkylene oxide.

                (b) The following cargoes are particularly reactive with alkylene oxides:
                (1) Non-oxidizing mineral acids (e.g. hydrochloric, phosphoric);
                (2) Sulfuric acid;
                (3) Nitric acid;
                (4) Organic acids (e.g. acetic, formic);
                (5) Halogenated organic acids (e.g. chloroacetic);
                (6) Sulfonic acids (e.g. alkyl benzene sulfonic);
                (7) Caustic alkalies (e.g. caustic soda, caustic potash; sodium hydrosulfide);
                (8) Ammonia and ammonia solutions;
                (9) Aliphatic amines;
                (10) Alkanolamines; and
                (11) Oxidizing substances.
                [CGD 78-128, 47 FR 21211, May 17, 1982, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983; CGD 81-078, 50 FR 21174, May 22, 1985]

                § 153.1020
                Unusually toxic cargoes.
                (a) No person may load or carry a cargo referenced to this section in Table 1 unless the cargo's piping and venting systems are separated from piping and venting systems carrying cargoes not referred to this section.
                (b) The master shall ensure that no heat transfer medium that has been circulated through a cargo referenced to this section in Table 1 is circulated through a cargo not referenced to this section unless he determines the medium to be uncontaminated with cargo.
                (c) No person may discharge overboard condensed steam from the heating system of a cargo referenced to this section in Table 1 unless he first determines the condensate to be uncontaminated with cargo.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 21212, May 17, 1982]

                § 153.1025
                Motor fuel antiknock compounds.
                (a) No person may load or carry any other cargo in a containment system approved for motor fuel antiknock compounds containing lead alkyls except a cargo to be used solely in the manufacture of motor fuel antiknock compounds.
                (b) The master shall ensure that no person enter a pumproom or void space that contains piping from a containment system approved for motor fuel antiknock compounds containing lead alkyls unless:
                (1) The pumproom or void space atmosphere has been analyzed for its lead (as Pb) content and found to be less than 0.075 mg/m3; or
                (2) The person follows the procedures for entering a cargo tank described in paragraph (c) of this section.

                (c) No person may enter a cargo tank endorsed for motor fuel antiknock compounds containing lead alkyls without prior specific authorization from the Commandant (CG-ENG). This authorization may be obtained by calling telephone number 202-372-1420 or e-mail hazmatstandards@uscg.mil if the person has previously obtained approval for the cargo tank entry procedure from the Commandant (CG-ENG).
                (d) No person may enter a cargo tank endorsed for motor fuel antiknock compounds if he does not follow the conditions in the authorization under paragraph (c) of this section.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 21212, May 17, 1982; CGD 82-063b, 48 FR 4782, Feb. 3, 1983; CGD 88-100, 54 FR 40042, Sept. 29, 1989; USCG-2006-25697, 71 FR 55747, Sept. 25, 2006; USCG-2012-0832, 77 FR 59785, Oct. 1, 2012]

                § 153.1035
                Acetone cyanohydrin or lactonitrile solutions.
                No person may operate a tankship carrying a cargo of acetone cyanohydrin or lactonitrile solutions, unless that cargo is stabilized with an inorganic acid.
                [CGD 88-100, 54 FR 40042, Sept. 29, 1989]

                § 153.1040
                Carbon disulfide.
                (a) No person may load, carry, or discharge carbon disulfide unless the cargo tank has a water pad over the cargo of at least one meter (approx. 40 in.).
                (b) The person in charge of a carbon disulfide transfer operation shall ensure that carbon disulfide is discharged only by displacement or intank cargo pump.
                (c) No person may remove a cargo pump for a containment system that carries carbon disulfide unless:

                (1) The containment system has a gas free certificate issued under the standards in § 35.01-1 of this chapter; or

                (2) The vapor space in the pump well is filled with water.

                § 153.1045
                Inorganic acids.
                When Table 1 refers to this section, the person in charge of cargo transfer shall ensure that the legends “NO SMOKING” and “NO OPEN LIGHTS” are displayed on the warning sign required in § 153.955(a) when cargo is transferred.

                § 153.1046
                Sulfuric acid.
                No person may liquefy frozen or congealed sulfuric acid other than by external tank heating coils.

                § 153.1052
                Carriage of other cargoes in acid tanks.
                No person shall load or carry other cargoes in a cargo containment system of a U.S. flag ship endorsed to carry sulfuric acid, hydrochloric acid, or phosphoric acid without specific authorization from the Commandant (CG-ENG).
                [CGD 94-900, 59 FR 45139, Aug. 31, 1994, as amended by USCG-2014-0688, 79 FR 58284, Sept. 29, 2014]

                § 153.1060
                Benzene.
                The person in charge of a Coast Guard inspected vessel must ensure that the provisions of part 197, subpart C, of this chapter are applied.
                [CGD 88-040, 56 FR 65006, Dec. 13, 1991]

                § 153.1065
                Sodium chlorate solutions.
                (a) No person may load sodium chlorate solutions into a containment system that previously carried another cargo unless the containment system is thoroughly washed before loading.
                (b) The person in charge of cargo transfer shall make sure that spills of sodium chlorate solutions are immediately washed away.
                [CGD 81-078, 50 FR 21174, May 22, 1985]

              Approval of Surveyors and Handling of Categories A, B, C, and D Cargo and NLS Residue

                Source:
                CGD 81-101, 52 FR 7785, Mar. 12, 1987, unless otherwise noted.

                § 153.1100
                Responsibility of the person in charge.
                The person in charge of the ship shall ensure that—
                (a) The requirements of §§ 153.1102 through 153.1132 are met; and
                (b) The procedures in the approved Procedures and Arrangements Manual are followed.

                § 153.1101
                Procedures for getting a Surveyor: Approval of Surveyors.
                (a) At least 24 hours before a Surveyor is needed, the person wishing the services of a Surveyor must contact the Captain of the Port or the Sector Office that has jurisdiction over the port at which the Surveyor will be needed to—
                (1) Arrange for the Coast Guard to provide a Surveyor; or
                (2) Inform the Coast Guard of the selection of a Surveyor from one of the organizations accepted by the Coast Guard to provide Surveyors.
                (b) Organizations may be accepted by the Coast Guard to provide Surveyors if they—
                (1) Are engaged, as a regular part of their business, in performing inspections or tests of bulk liquid cargo tanks or bulk liquid cargo handling equipment;
                (2) Are familiar with the references in § 153.0(b) and with the requirements of this part;
                (3) Are not controlled by the owners or operators of ships needing the services of the Surveyors or the facilities at which those ships would unload cargo;
                (4) Are not dependent on Coast Guard acceptance under this section to remain in business; and
                (5) Sign a Memorandum of Understanding with the Coast Guard.
                (c) Each application for acceptance as a Surveyor must be submitted to the Commandant (CG-ENG) and must contain the following:
                (1) The name and address of the organization, including subsidiaries and divisions, requesting acceptance by the Coast Guard to provide Surveyors.

                (2) A statement that the organization is not controlled by the owners or operators of ships needing the services of Surveyors or the facilities at which these ships would unload, or a full disclosure of any ownership or controlling interest held by such parties.
                (3) A description of the experience and qualifications of the personnel who would be performing the function of Surveyor.
                (4) A statement that the persons who will be performing the function of Surveyor have been trained in and are familiar with the requirements of Annex II and the regulations in this part.
                (5) A statement that the Coast Guard may verify the information submitted in the application and may examine the persons who will be performing the function of Surveyor to determine their qualifications.
                (d) The acceptance of an organization may be terminated by the Commandant if the organization fails to properly perform or supervise the inspections required in this part.
                [CGD 81-101, 52 FR 7785, Mar. 12, 1987, as amended by USCG-2006-25556, 72 FR 36330, July 2, 2007]

                § 153.1102
                Handling and disposal of NLS residue: Categories A, B, C, and D.

                (a) Except those Category A NLS residues that must be discharged under paragraph (c) of this section, NLS residue from an NLS whose vapor pressure is 5 kPa (50 mbar) or less at 20 °C (68 °F) must be—

                  Note to paragraph (a):
                  The Marine Protection, Research, and Sanctuaries Act allows specific liquids to be discharged to the sea under permits issued by the EPA.

                (1) Unloaded to any consignee;
                (2) Returned to the shipper;
                (3) Discharged to a reception facility;
                (4) Retained on the ship; or
                (5) Discharged to the sea under § 153.1126 or § 153.1128.
                (b) Except those Category A NLS residues that must be discharged under paragraph (c) of this section, NLS residue from an NLS whose vapor pressure is greater than 5 kPa (50 mbar) at 20 °C must be—
                (1) Handled in the same way as the NLS residue under paragraph (a) of this section; or

                (2) Ventilated following a ventilation procedure in the approved Procedures and Arrangements Manual.

                  Note:
                  The Clean Air Act (42 U.S.C. 7401 et seq) allows states to regulate emissions from tank ventilation. There may be other regulations, both local and Federal, that affect the use of tank ventilation for safety or environmental purposes.

                (c) NLS residue containing Category A NLS in pumproom bilges and in spill trays at the manifold must be discharged to a reception facility.
                [CGD 81-101, 52 FR 7785, Mar. 12, 1987, as amended by CGD 81-101, 53 FR 28975, Aug. 1, 1988 and 54 FR 12629, Mar. 28, 1989]

                § 153.1104
                Draining of cargo hose: Categories A, B, C, and D.
                Before a cargo hose used in discharging an NLS from a ship's cargo tank is disconnected, the hose must be drained back to the transfer terminal unless the tank unloading the cargo has a waiver under § 153.483 or § 153.491.
                [CGD 81-101, 53 FR 28975, Aug. 1, 1988 and 54 FR 12629, Mar. 28, 1989]

                § 153.1106
                Cleaning agents.
                No tank cleaning agent other than water or steam may be used to clean an NLS residue from a cargo tank except as prescribed in the approved Procedures and Arrangements Manual.

                § 153.1108
                Heated prewash for solidifying NLS, high viscosity NLS and required prewashes of NLS whose viscosity exceeds 25 mPa sec at 20 °C: Categories A, B, and C.
                (a) When a high viscosity or solidifying cargo is unloaded from a cargo tank, the cargo tank must be prewashed unless § 153.1114 or paragraph (c) of this section allows the prewash to be omitted.
                (b) When a prewash is required for a tank that has unloaded a solidifying cargo or a cargo having a viscosity exceeding 25 mPa sec at 20 °C, the wash water used in the prewash must leave the tank washing machine at a temperature of at least 60 °C (140 °F).

                (c) The prewash required under paragraph (a) of this section may be omitted if the approved Procedures and Arrangements Manual contains a procedure for measuring the temperature of all interior cargo tank surfaces throughout unloading and under the measuring procedure the temperature of these surfaces remains above—

                (1) The temperature of the cargo's melting point if the cargo is a Category B or C solidifying NLS; or
                (2) The temperature at which the cargo's viscosity exceeds—
                (i) 25 mPa.s, if the cargo is a high viscosity Category B NLS; or
                (ii) 60 mPa.s, if the cargo is a high viscosity Category C NLS.
                [CGD 81-101, 53 FR 28975, Aug. 1, 1988 and 54 FR 12629, Mar. 28, 1989]

                § 153.1112
                Prewash for tanks containing Category A NLS residue.
                Unless § 153.1114 allows the prewash to be omitted, a cargo tank that unloads a Category A NLS cargo must be prewashed following the procedures in § 153.1120.

                § 153.1114
                Conditions under which a prewash may be omitted: Categories A, B, and C.
                A prewash required by this part may be omitted if one of the following requirements is met:
                (a) A Surveyor has signed a statement in the Cargo Record Book that the next cargo has been determined to be one that may be loaded without washing the tank, and the tank is not washed or ballasted before it is loaded with the next cargo.

                (b) A Surveyor has signed a statement in the Cargo Record Book that the approved Procedures and Arrangements Manual contains procedures for removing the NLS residue by ventilation, and the cargo tank is not washed or ballasted before being cleaned following the ventilation procedure.

                  Note:
                  The Clean Air Act (42 U.S.C. 7401 et seq.) allows states to regulate emissions from tank ventilation. There may be other regulations, both local and Federal, that affect the use of tank ventilation for safety or environmental purposes.

                (c) The tank requiring the prewash has a waiver issued under § 153.483 or § 153.491 and the waiver states when the tank is to be prewashed.

                § 153.1116
                Prewash for tanks unloaded without following the approved Procedures and Arrangements Manual: Categories B and C.
                If for any reason more Category B or C NLS residue remains in a cargo tank and transfer piping of a ship after unloading than would remain after a normal discharge of the cargo when the unloading procedures in the approved Procedures and Arrangements Manual are followed, the tank must be prewashed following the procedures in § 153.1120 unless—
                (a) Section 153.1114 allows the prewash to be omitted; or
                (b) The residue is reduced using another procedure, and a Surveyor estimates and states in the Cargo Record Book that the cargo tank and transfer piping contain no more NLS residue than they would if discharged following the procedures in the approved Procedures and Arrangements Manual, and no other prewash is required by this part.

                § 153.1118
                Prewash of Categories B and C cargo tanks not meeting stripping standards: Categories B and C.
                (a) Unless § 153.1114 allows the prewash to be omitted, a cargo tank from which a Category B NLS is unloaded must be prewashed using the procedures in § 153.1120(b) if the tank—
                (1) Operates under the interim standard in § 153.481(b); or
                (2) Has a waiver issued under § 153.483.
                (b) Unless § 153.1114 allows the prewash to be omitted, a cargo tank from which a Category C NLS is unloaded must be prewashed using the procedures in § 153.1120(b) if the tank has a waiver issued under § 153.483.

                § 153.1119
                When to prewash and discharge NLS residues from a prewash; unloading an NLS cargo in a country whose Administration is not signatory to MARPOL 73/78: Categories A, B, and C.
                (a) Except as allowed in paragraphs (b), (c), and (e) of this section, each prewash required by this subpart must be completed and all tank washings must be discharged to a reception facility before the ship leaves the unloading port.

                (b) NLS residue from the prewash following the unloading of a Category B NLS may be transferred to a slop tank for discharge under § 153.1126 instead of being discharged under paragraph (a) of this section if the prewash is required solely under § 153.1118(a)(1).

                (c) A tank that is required by this part to be prewashed may be prewashed in a port other than the unloading port if the following conditions are met:

                (1) The person in charge requests permission from the Commandant (CG-ENG) (tel num: 202-372-1420; email: HazmatStandards@uscg.mil) if the prewash port is a foreign port, or the Captain of the Port having jurisdiction over the unloading port if the prewash port is a U.S. port.
                (2) The person in charge supplies with the request required under paragraph (c)(1) of this section—
                (i) The name of the ship;
                (ii) The name of the owner;
                (iii) The name of the NLS;
                (iv) The approximate date the tank will be prewashed if the relocation of the prewash port is for one time only;
                (v) A written agreement to receive the tank washings by a reception facility in the prewash port;
                (vi) When the prewash port or terminal is in a country whose Administration is signatory to MARPOL 73/78, a written attestation from the person in charge of each prewash port or terminal that the Administration has determined the port or terminal to have adequate reception facilities for the NLS residue;
                (vii) Written pledges from the person in charge that—
                (A) The tank to be prewashed will not be washed or ballasted before being prewashed; and
                (B) The ship will be taken to the reception facility and the tank prewashed in accordance with the requirements in § 153.1120; and
                (viii) Any additional information the Captain of the Port or Commandant (CG-ENG) requests to evaluate granting the permission.
                (3) The Coast Guard or Commandant (CG-ENG) has granted the permission in writing, the permission is carried aboard the ship, and the person in charge of the ship has made an entry in the Cargo Record Book stating that the permission has been granted.
                (d) Unless the permission granted under paragraph (c)(4) of this section includes alternate conditions of termination or revocation in writing, the permission is—
                (1) Terminated after the tank is prewashed as pledged in paragraph (c)(3)(vii) of this section or loaded with another cargo;
                (2) Revoked if either of the pledges in paragraph (c)(3)(vii) of this section is invalidated or the agreement in paragraph (c)(3)(v) of this section is repudiated; and
                (3) Revoked at any time the ship is not operated in accordance with the pledges in paragraph (c)(3)(vii) of this section and the conditions listed with the granted permission.
                (e) A U.S. ship that would otherwise be required by this part to prewash in a port without reception facilities must obtain permission from Commandant (CG-ENG) to prewash in an alternate port.
                [CGD 81-101, 52 FR 7785, Mar. 12, 1987, as amended by USCG-2006-25697, 71 FR 55747, Sept. 25, 2006; USCG-2014-0688, 79 FR 58284, Sept. 29, 2014]

                § 153.1120
                Procedures for tank prewash: Categories A, B, and C.
                Except where the approved Procedures and Arrangements Manual prescribes a different procedure, each of the following steps must be done in the order listed for the Coast Guard to consider the tanks prewashed under this part:
                (a) When this part requires a prewash of a tank containing Category A NLS residue and the alternative prewash procedure in paragraph (b) of this section is not used, the prewash must meet the following:
                (1) The prewash may not begin until—
                (i) A Surveyor is present; and
                (ii) Instrumentation or equipment is available that is capable of measuring the concentration of the Category A NLS in the NLS residue and determining whether it is below 0.1 per cent by weight.
                (2) The equipment specified in § 153.484 must be used as prescribed in the approved Procedures and Arrangements Manual for the prewash.

                (3) The wash water must be heated if required by § 153.1108, and water or tank washings must pass through the cargo pump and piping, including any stripping equipment, during washing or during discharge of tank washings.

                (4) The tank washing machine must be placed in all positions specified for the tank's Category A NLS prewash procedure in the approved Procedures and Arrangements Manual.
                (5) The tank must be pumped out each time there are enough tank washings collected in the bottom of the tank for the pump to gain suction, and if the NLS is immiscible with water or is a solidifying cargo, all floating and suspended NLS must be discharged.
                (6) The washing machine must be operated until samples of the discharged tank washings taken by the Surveyor are tested using the equipment required by paragraph (a)(1)(ii) of this section and the concentration of NLS is below 0.1 per cent by weight.
                (7) After the washing is stopped, the remaining tank washings must be pumped out.
                (8) The Cargo Record Book must have items 12 through 14 completed and must show the Surveyor's written certification of their accuracy.
                (9) The Cargo Record Book must have the Surveyor's written concurrence that the prewash procedures specified in the approved Procedures and Arrangements Manual were followed.
                (b) When this part requires a prewash of a tank containing Category B or C NLS residue or when the procedure in this paragraph is used as an alternative to the prewash procedure under paragraph (a) of this section, the prewash must meet the following:
                (1) If the prewash is for a Category A NLS, the prewash may not begin until a Surveyor is present.
                (2) The equipment specified in § 153.484 must be used as prescribed in the approved Procedures and Arrangements Manual for the prewash.
                (3) The wash water must be heated if required by § 153.1108, and water or tank washings must pass through the cargo pump and piping, including any stripping equipment, during washing or during discharge of tank washings.
                (4) Except as required in paragraph (b)(5) of this section, the number of washing machine cycles specified in Table 153.1120 must be completed. If a prewash is required by a section listed under Column 1 of Table 153.1120 and another section listed under Column 2, the number of cycles in Column 1 must be completed but no additional cycles are necessary.
                (5) If the approved Procedures and Arrangements Manual specifies that a tank washing machine must be moved for the prewash of a tank from which a Category A NLS or a solidifying NLS has been unloaded, the number of washing machine cycles specified in Table 153.1120 must be completed at each position to which the washing machine is moved.
                (6) When the NLS is immiscible with water or is a solidifying cargo, the tank must be pumped out each time enough tank washings collect in the bottom of the tank for the pump to gain suction, or the procedures in paragraphs (b)(3), (b)(4), and (b)(5) of this section must be repeated two additional times with the tank pumped out each time, for a total of three washings.
                (7) Items 12 through 14 in the Cargo Record Book must be completed and, if the prewash is for a Category A NLS, verification that the procedures specified in the approved Procedures and Arrangements Manual were followed shown by the Surveyor's endorsement in the Cargo Record Book.

                  Table 153.1120—Number of Washing Machine Cycles in the Prewash Procedure

                    Number of washing machine cycles
                    Column 1: Prewash under § 153.1116 or for a solidifying NLS under § 153.1108
                    Column 2: Prewashes except those listed under column 1

                    Category A NLS
                    2
                    1

                    Category B or C NLS
                    1
                    1/2

                [CGD 81-101, 52 FR 7785, Mar. 12, 1987, as amended by CGD 81-101, 53 FR 28975, Aug. 1, 1988 and 54 FR 12629, Mar. 28, 1989]

                § 153.1122
                Discharges of NLS residue from tank washing other than a prewash: Categories A, B, and C.
                Tank washings that do not result from a prewash and that contain Category A, B, or C NLS residues must be discharged to a reception facility or discharged to the sea under § 153.1126 or § 153.1128 except those tank washings resulting from washing a tank that has been cleaned following a ventilation procedure in the approved Procedures and Arrangements Manual.

                § 153.1124
                Discharges of Category D NLS residue.
                NLS residue from Category D NLSs must be discharged to a reception facility or discharged to the sea using the following procedure:
                (a) Before discharge begins, drain or flush the NLS residue in the tank's piping systems into the tank.
                (b) After draining or flushing, discharge the NLS residue to the sea in accordance with § 153.1128 or transfer it to a slop tank and discharge in accordance with § 153.1126.

                § 153.1126
                Discharge of NLS residue from a slop tank to the sea: Categories A, B, C, and D.
                NLS residue in a slop tank may not be discharged into the sea unless—
                (a) The ship meets the conditions for discharging the NLS residue from a cargo tank in § 153.1128; and
                (b) For Category B NLS residue transferred to the slop tank under § 153.1119(b), the NLS is discharged—
                (1) Through an NLS residue discharge system with the flow recording equipment required in § 153.481(b)(2) operating; and
                (2) At a rate maintained at or below Q in the following:
                For tank contents that are miscible

                  EC13NO91.045

                For tank contents that are immiscible

                Q = KU1.4 L1.6 × 10−5 m3/hr

                  where:

                  Q = maximum permissible slops discharge rate in cubic meters per hour.
                  V = volume of slops in the tank in cubic meters.
                  K = 4.3, except K = 6.45 if Q is distributed between two NLS residue discharge outlets on opposite sides of the ship (see §§ 153.470(c) and 153.481(b)).
                  U = ship's speed in knots.
                  L = ship's length in meters.
                  N = number of tanks containing Category B NLS residue pumped into the slop tank.

                § 153.1128
                Discharge of NLS residue from a cargo tank to the sea: Categories A. B, C, and D.
                The discharge of NLS residue to the sea must be made with the ship at least 22.24 km (12 nautical miles) from the nearest land, and must meet the following additional conditions:
                (a) To discharge the following the ship must be in water at least 25 m (76.2 ft) deep:
                (1) Category B or C NLS residue diluted to less than 1 ppm of the NLS.
                (2) Category B or C NLS residue resulting from washing a tank after the following washing procedure has been completed:
                (i) If the tank is not required to be prewashed under this part, the tank must be washed following the procedures that apply to a prewash of a Category B NLS in § 153.1120 using one washing machine cycle, and the tank washings discharged to a reception facility or to the sea under § 153.1126 or paragraph (a)(1), (c) or (d) of this section.
                (ii) After the tank has been prewashed or has been washed under paragraph (a)(2)(i) of this section, the tank must then be washed with one cycle of the tank washing machine, and the tank washings discharged to a reception facility or to the sea in accordance with § 153.1126 or paragraph (a)(1), (c), or (d) of this section.
                (b) To discharge a Category D NLS residue to which 10 times its volume in water is added and mixed, the ship must be—
                (1) If self-propelled, maintained at a speed of at least 12.97 km/hr (7 knots); and
                (2) If not self-propelled, maintained at a speed of at least 7.41 km/hr (4 knots).
                (c) Each ship built before July 1, 1986 that discharges Category A, B or C NLS residues before January 1, 1988 must be—
                (1) In water at least 25 m (76.2 ft) deep;
                (2) If discharging the residue of a Category A NLS cargo, discharging only residue created by washing the Category A NLS's cargo tank after a prewash;
                (3) If discharging the residue of a Category B NLS cargo, discharging no more than the larger of 1 m3 or 1/3000th the volume of the Category B cargo loaded;

                (4) If discharging the residue of a Category C NLS cargo, discharging no more than the larger of 3 m3 of or

                1/1000th the volume of the Category C cargo loaded;
                (5) If self-propelled, maintained at a speed of at least 12.97 km/hr (7 knots); and
                (6) If not self-propelled, maintained at a speed of at least 7.41 km/hr (4 knots).
                (d) To discharge Category A, B, C, or D NLS residue other than as allowed under paragraphs (a) through (c) of this section, the ship must be—
                (1) In water at least 25 m (76.2 ft) deep;

                (2) Discharging at a rate not exceeding that used for Qd in § 153.470;
                (3) If self-propelled, maintained at speed no less than the minimum specified in the approved Procedures and Arrangements Manual but at least 12.97 km/hr (7 knots);
                (4) If not self-propelled, maintained at a speed no less than the minimum specified in the approved Procedures and Arrangements Manual but at least 7.41 km/hr (4 knots);
                (5) If discharging the residue of a Category A NLS cargo, discharging only residue created by washing the Category A NLS's cargo tank after a prewash;
                (6) If discharging the residue of a Category B NLS cargo, discharging no more than the larger of 1 m3 or 1/3000th the volume of the Category B cargo loaded;
                (7) If discharging the residue of a Category C NLS cargo, discharging no more than the larger of 3 m3 of or
                1/1000th the volume of the Category C cargo loaded;
                (8) Discharging through an NLS residue discharge system meeting § 153.470.
                [CGD 81-101, 52 FR 7785, Mar. 12, 1987, as amended by CGD 81-101, 53 FR 28976, Aug. 1, 1988 and 54 FR 12629, Mar. 28, 1989]

                § 153.1130
                Failure of slops discharge recording equipment; operating with, reporting failures, and replacing pollution equipment: Category A, B, C, D.
                (a) If equipment required in §§ 153.470 through 153.488 fails, the Coast Guard Marine Inspection Office, Sector Office, or Captain of the Port must be notified within 24 hours after the failure.
                (b) No person shall replace a piece of equipment required by §§ 153.470 through 153.488 unless the replacement is—
                (1) Identical to the original equipment; or
                (2) Allowed as an alternative under § 153.10.
                (c) The following conditions apply when discharge recording equipment required under § 153.481(b)(2) fails:
                (1) No NLS residue may be discharged unless the approved Procedures and Arrangements Manual contains procedures for discharging with incapacitated discharge recording equipment while meeting the discharge restrictions of § 153.1126(b) and these procedures are followed.
                (2) The failure of the discharge recording equipment must be recorded in the Cargo Record Book within 24 hours after the failure.
                (3) If the ship operates under a Certificate of Inspection, the failed discharge recording equipment must be repaired or replaced within 60 days after it fails, and the repair or replacement recorded in the Cargo Record Book and reported to the Coast Guard within 24 hours after it is completed.
                [CGD 81-101, 52 FR 7785, Mar. 12, 1987, as amended by USCG-2006-25556, 72 FR 36330, July 2, 2007]

                § 153.1132
                Reporting spills and non-complying discharges: Category A, B, C, and D.
                The following shall be reported following the procedures applying to oil in 33 CFR 151.15 (c), (d), (g), (h):
                (a) All discharges of the NLS that do not meet the requirements of this part.
                (b) All spills into the water.

              Maintenance

                § 153.1500
                Venting system rupture disks.
                The master shall ensure that a relief valve exposed to a cargo after the failure of a rupture disk or breaking pin is cleaned and operates properly before the next cargo is loaded into the tank.

                § 153.1502
                Fixed ballast relocation.
                No person may remove or relocate fixed ballast unless:

                (a) The change is approved by the Commandant (CG-ENG); or

                (b) The ballast is temporarily moved under the supervision of a Coast Guard Marine Inspector for examination or repair of the tankship.
                [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 153.1504
                Inspection of personnel emergency and safety equipment.
                The master shall ensure that the personnel emergency and safety equipment required by § 153.214 is inspected each 30 days and found to be in good condition and operating properly.

            Subpart D—Test and Calculation Procedures for Determining Stripping Quantity, Clingage NLS Residue, and Total NLS Residue

              Source:
              CGD 81-101, 52 FR 7788, Mar. 12, 1987, unless otherwise noted.

              § 153.1600
              Equipment required for conducting the stripping quantity test.
              The operator shall ensure the stripping quantity test is conducted with—
              (a) Equipment that maintains a backpressure of at least 100 kPa (1 atm) (gauge) at the connection of the discharge line of the tank to be tested to the cargo transfer hose, including, but not limited to, piping whose discharge is 10 m above the manifold or a constant pressure valve in the discharge line and set at 100 kPa;
              (b) A container for measuring the volume of water remaining in the tank to an accuracy of ±5%;
              (c) A squeegee or broom to collect standing water on the tank floor;
              (d) One or more containers for collecting and transferring water; and
              (e) One of the following for transferring the water remaining in the tank to the measuring container:
              (1) A wet vacuum.
              (2) A positive displacement pump.
              (3) An eductor with an air/water separator in line.

              § 153.1602
              Test procedure for determining the stripping quantity.
              (a) The stripping quantity of a tank must be determined by testing the tank under the procedures in paragraph (b) of this section unless the Coast Guard agrees under the provisions of § 153.10 to accept the stripping quantity, previously determined under paragraph (b) of this section, of a tank having similar geometry, internal structure, and piping system.
              (b) When testing a tank for stripping quantity, the owner or operator of the ship shall proceed as follows:
              (1) Make arrangements with the Officer in Charge, Marine Inspection, for a Coast Guard Marine Inspector to witness the stripping test.
              (2) Clean and gas free the tanks to be tested.
              (3) Determine the least favorable values of list and trim for drainage within the range allowed by the approved Procedures and Arrangements Manual.
              (4) Maintain the ship's list and trim during the test to that determined under paragraph (b)(3) of this section.
              (5) Load the tank with enough water so that unloading the water simulates the final stages of unloading a full tank of cargo.
              (6) Pump out the water and strip the tank using the procedures specified in the approved Procedures and Arrangements Manual.
              (7) After shutting the manifold valve, open any cargo pump foot valve to allow water trapped in the cargo pump to drain into the tank.
              (8) Open all valves in the piping system except the manifold valve and allow the water to drain into the tank.
              (9) Squeegee or sweep the water drained under paragraphs (b)(7) and (b)(8) of this section and any water that stands in puddles on the tank floor to the tank's low point or sump and collect in the container required by § 153.1600(b) using the equipment required in § 153.1600(e).
              (10) With the manifold valve still closed, drain any water remaining in the piping system on the ship's side of the cargo transfer manifold valve into containers, and add this water to that collected from the tank under paragraph (b)(9) of this section. Water collected from a cargo line serving a block of tanks may be prorated between all the tanks it serves if—

              (i) The ship owner requests, under the provisions of § 153.10, that the water be prorated; and

              (ii) The ship's approved Procedures and Arrangements Manual specifies that no tank in the block be washed until all the tanks in the block have been discharged.
              (c) Include any water that is trapped in dead end pipe sections, either by—
              (1) Draining the pipe sections and adding the water to that collected in the container under paragraphs (b)(9) and (b)(10) of this section; or
              (2) Adding an estimate of the water's volume to the sum calculated in paragraph (d) of this section using the pipe's dimensions, the ship's list and trim, and the geometry of the piping system.
              (d) Measure the volume of water collected in the container under paragraphs (b)(9), (b)(10), and (c)(1) of this section and add to that volume the volume, if any, estimated under paragraph (c)(2) of this section.
              [CGD 81-101, 52 FR 7788, Mar. 12, 1987]

              § 153.1604
              Determining the stripping quantity from the test results.
              (a) For a single test, the stripping quantity is the volume of water calculated under § 153.1602(d).
              (b) If multiple tests are made on a tank without modifications to the tank, pumping system, or stripping procedure between the tests, the stripping quantity must be taken as the average of the stripping quantities for all of the tests.
              (c) If multiple tests are made on a tank with modifications to the tank, pumping system, or stripping procedure between the tests, the stripping quantity is the stripping quantity determined under paragraph (b) of this section using only those tests performed after the last modification.

              § 153.1608
              Calculation of total NLS residue and clingage NLS residue.
              (a) The total NLS residue for each tank is calculated by adding the stripping quantity and the clingage NLS residue.

              (b) The clingage NLS residue for each tank is calculated using the following formula:

              Qclingage = 1.1 × 10−4 Ad + 1.5 × 10−5 Aw + 4.5 × 10−4 L1/2 Ab

                where:

                Ab = Area of the tank bottom added to the area in square meters of tank structural components projected on a horizontal surface
                Ad = Area of the tank underdecks added to the area in square meters of tank structural components projected on a horizontal surface
                Aw = Area of the tank walls added to the area in square meters of tank structural components projected on a vertical surface
                L = Length of tank in meters from fore to aft
                Qclingage = volume of clingage in cubic meters

              When using the formula in this paragraph, areas that are inclined more than 30° from the horizontal may be assumed to be vertical.

                Note:
                The Commandant (CG-ENG) (telephone number 202-372-1420) has information that may be useful in approximating surface areas of typical structural members for the projected area calculations under § 153.1608(b).

              [CGD 81-101, 52 FR 7788, Mar. 12, 1987, as amended by USCG-2006-25697, 71 FR 55747, Sept. 25, 2006; USCG-2012-0832, 77 FR 59785, Oct. 1, 2012]

              Pt. 153, Table 1
              Table 1 to Part 153—Summary of Minimum Requirements

                  Cargo name
                  IMO Annex II Pollution Category
                  Haz.
                  Cargo containment system
                  Ventheight

                  Vent
                  Gauge
                  Fire protection system
                  Special requirements in46 CFR Part 153

                  Electrical hazard class and group

                  a.
                  b.
                  c.
                  d.
                  e.
                  f.
                  g.
                  h.
                  i.
                  j.

                  Acetic acid
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A
                  .238(a), .409, .527, .554, .933
                  I-D

                  Acetic anhydride
                  D
                  S
                  II
                  4m
                  PV
                  Restr
                  A
                  .238(a), .409, .526, .527, .554, .933
                  I-D

                  Acetochlor
                  A
                  P
                  II
                  NR
                  Open
                  Open
                  A
                  .409
                  NA

                  Acetone cyanohydrin
                  A
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A
                  .238(a), .316, .336, .408, .525, .526, .527, .912(a)(2), .933, .1002, .1004, .1020, .1035
                  I-D

                  Acetonitrile
                  III
                  S
                  II
                  B/3
                  PV
                  Restr
                  A
                  .409, .525, .526, .1020
                  I-D

                  Acrylamide solution (50% or less)
                  D
                  S
                  II
                  NR
                  Open
                  Closed
                  NSR
                  .409, .525(a), (c), (d), (e), .912(a)(1), .1002(a), .1004, .1020
                  NA

                  Acrylic acid
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A
                  .238(a), .409, .526, .912(a)(1), .933, .1002(a), .1004
                  I-D

                  Acrylonitrile
                  B
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A
                  .236(a), (c), (d), .316, .408, .525, .526, .527, .912(a)(1), .1004, .1020
                  I-D

                  Adiponitrile
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A
                  .526
                  I-D

                  Alachlor
                  B
                  S/P
                  III
                  NR
                  Open
                  Open
                  A, C
                  .238(a), .409, .440, .488, .908(a), (b)
                  NA

                  Alcohol (C6-C17) (secondary) poly(3-6)ethoxylates
                  A
                  P
                  II
                  NR
                  Open
                  Open
                  A
                  .409
                  NA

                  Alcohol (C6-C17) (secondary) poly(7-12)ethoxylates
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409, .440, .908(a), (b)
                  NA

                  Alcohol(C9-C11) poly(2.5-9) ethoxylate
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409, .440, .908(a)
                  NA

                  Alcohol(C12-C15) poly(...)ethoxylates, see Alcohol(C12-C16) poly(...)ethoxylates

                  Alcohol(C12-C16) poly(1-6)ethoxylates
                  A
                  P
                  II
                  NR
                  Open
                  Open
                  A
                  .409
                  NA

                  Alcohol(C12-C16) poly(7-19)ethoxylates
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409, .440, .908(a)
                  NA

                  Alcohol(C12-C16) poly(20 + )ethoxylates
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  NA

                  Alkanes(C6-C9) (all isomers)
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Alkane(C14-C17) sulfonic acid, sodium salt solution (65% or less)
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .440, .908(a)
                  NA

                  Alkaryl polyether (C9-C20)
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A, B
                  .409; (.440, .908(a)) 1

                  NA

                  Alkenyl(C16-C20) succinic anhydride
                  D
                  S
                  III
                  B/3
                  PV
                  Closed
                  NSR
                  .316, .408, .525, .526, .1020
                  NA

                  Alkyl acrylate-Vinyl pyridine copolymer in Toluene
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  NA

                  Alkylaryl phosphate mixtures (more than 40% Diphenyl tolyl phosphate, less than 0.02% ortho- isomer)
                  A
                  S/P
                  I
                  B/3
                  PV
                  Closed
                  A, B, C
                  .316, .408, .525, .526, .1020
                  NA

                  Alkyl(C3-C4)benzenes (all isomers)
                  A
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Alkyl(C5-C8)benzenes (all isomers)
                  A
                  P
                  II
                  NR
                  Open
                  Open
                  A
                  .409
                  I-D

                  Alkylbenzene, Alkylindane, Alkylindene mixture (each C12-C17)
                  A
                  P
                  II
                  NR
                  Open
                  Open
                  A
                  .409
                  NA

                  Alkylbenzenesulfonic acid (greater than 4%)
                  C
                  S/P
                  III
                  NR
                  Open
                  Open
                  A, B
                  .440, .908(a)
                  NA

                  Alkylbenzenesulfonic acid, sodium salt solution
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .440, .903, .908(a), (b)
                  NA

                  Alkyl(C7-C9) nitrates
                  B
                  S/P
                  II
                  NR
                  Open
                  Open
                  A, B
                  .409, .560, .1002
                  NA

                  Alkyl (C7-C11) phenol poly(4-12) ethoxylate
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409, .440, .488 1, .908(a), (b)
                  I-D

                  Alkyl(C8-C9) phenylamine in aromatic solvent
                  A
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  NA

                  Alkyl(C10-C20, saturated and unsaturated) phosphite
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  NA

                  Alkyl(C8-C10) polyglucoside solution (65% or less)
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .440, .908(a), (b)
                  NA

                  Alkyl(C12-C14) polyglucoside solution (55% or less)
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .409, .440, .908(a), (b)
                  NA

                  Alkyl(C8-C10)/(C12-C14): (40% or less/60% or more) polyglucoside solution (55% or less)
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .409, .440, .908(a), (b)
                  NA

                  Alkyl(C8-C10)/(C12-C14): (50/50%) polyglucoside solution (55% or less)
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .440, .908(a), (b)
                  NA

                  Alkyl(C8-C10)/(C12-C14): (60% or more/40% or less) polyglucoside solution (55% or less)
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .440, .908(a), (b)
                  NA

                  Allyl alcohol
                  B
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A
                  .316, .408, .525, .526, .527, .933, .1020
                  I-C

                  Allyl chloride
                  B
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A
                  .316, .408, .525, .526, .527, .1020
                  I-D

                  Aluminum chloride (30% or less), Hydrochloric acid (20% or less) solution
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  NSR
                  .252, .526, .527, .554, .557, .933, .1045, .1052
                  I-B

                  2-(2-Aminoethoxy) ethanol
                  D
                  S
                  III
                  NR
                  Open
                  Open
                  A, C, D
                  .236(b), (c), .409
                  NA

                  Aminoethylethanolamine
                  D
                  S
                  III
                  NR
                  Open
                  Open
                  A
                  .236(a), (b), (c), (g)
                  NA

                  N-Aminoethylpiperazine
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A
                  .236(b), (c), .409, .526
                  I-C

                  2-Amino-2-methyl-1-propanol (90% or less)
                  D
                  S
                  III
                  NR
                  Open
                  Open
                  A
                  .236(a), (b), (c), (g)
                  I-D

                  Ammonia aqueous (28% or less), see Ammonium hydroxide (28% or less NH3)

                  Ammonium bisulfite solution (70% or less)
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  No
                  .238(e), .526, .933, .1002
                  NA

                  Ammonium hydroxide (28% or less NH3)
                  C
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A, B, C
                  .236(b), (c), (f), .526, .527
                  I-D

                  Ammonium nitrate solution (greater than 45% and less than 93%)
                  D
                  S
                  II
                  NR
                  Open
                  Open
                  NSR
                  .238(d), .252, .336, .409, .554(a), (b)
                  NA

                  Ammonium sulfide solution (45% or less)
                  B
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, C
                  .236(a), (b), (c), (g), .316, .408, .525, .526, .527, .933, .1002, .1020
                  I-D

                  Ammonium thiocyanate (25% or less), Ammonium thiosulfate (20% or less) solution
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  NSR
                  None
                  NA

                  Ammonium thiosulfate solution (60% or less)
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .440, .908(b)
                  NA

                  Amyl acetate (all isomers)
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  tert-Amyl methyl ether
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  NA

                  Aniline
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A
                  .316, .408, .525, .526, .933, .1020
                  I-D

                  Anthracene oil (Coal tar fraction), see Coal tar

                  Aviation alkylates (C8 paraffins and iso-paraffins, b. pt. 95-120 deg. C)

                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  B
                  .409
                  I-C

                  Barium long chain (C11-C50) alkaryl sulfonate
                  B
                  S/P
                  II
                  NR
                  Open
                  Open
                  A, D
                  .408, .440, .525(a), (c), (e), (d), .908(a), .1020
                  NA

                  Barium long chain alkyl (C8-C14) phenate sulfide
                  [A]
                  P
                  II
                  NR
                  Open
                  Open
                  A
                  .409
                  NA

                  Benzene hydrocarbon mixtures 2 (having 10% Benzene or more)
                  C 2

                  S/P
                  III
                  B/3
                  PV
                  Closed
                  A, B
                  .316, .409, .440, .526, .908(b), .933, .1060
                  I-D

                  Benzenesulfonyl chloride
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A, B, D
                  .236(a), (b), (c), (g), .409, .526
                  I-D

                  Benzene, Toluene, Xylene mixtures 2 (having 10% Benzene or more)
                  @C 2

                  S/P
                  III
                  B/3
                  PV
                  Closed
                  B
                  .316, .409, .440, .526, .908(b), .1060
                  I-D

                  Benzyl acetate
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  I-D

                  Benzyl alcohol
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  I-D

                  Benzyl chloride
                  B
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, B
                  .316, .408, .525, .526, .527, .912(a)(2), .1004, .1020
                  I-D

                  Bromochloromethane
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  NSR
                  .236(a), (b), (d), .526, .933
                  NA

                  Butene oligomer
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409
                  NA

                  Butyl acetate (all isomers)
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Butyl acrylate (all isomers)
                  B
                  S/P
                  II
                  4m
                  PV
                  Restr
                  A
                  .409, .526, .912(a)(1), .1002(a), (b), .1004
                  I-D

                  Butylamine (all isomers)
                  C
                  S/P
                  II
                  B/3
                  PV
                  Restr
                  A
                  .236(b), (c), .316, .408, .525, .526, .527, .1020
                  I-D

                  Butylbenzene (all isomers), see Alkyl(C3-C4)benzenes (all isomers)
                  A
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Butyl benzyl phthalate
                  A
                  P
                  II
                  NR
                  Open
                  Open
                  A
                  .409
                  I-D

                    n-Butyl butyrate, see Butyl butyrate (all isomers)

                  Butyl butyrate (all isomers)
                  B
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  1,2-Butylene oxide
                  C
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A, C
                  .372, .409, .440, .500, .526, .530(a), (c), (e)-(g), (m)-(o), .1010, .1011
                  I-B

                  n-Butyl ether
                  C
                  S/P
                  III
                  B/3
                  PV
                  Restr
                  A, D
                  .409, .500, .525, .526, .1020
                  I-C

                  Butyl heptyl ketone
                  [C]
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  NA

                    iso-Butyl isobutyrate, see Butyl butyrate (all isomers)

                  Butyl methacrylate
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A, D
                  .409, .526, .912(a)(1), .1002(a), (b), .1004
                  I-D

                  Butyl methacrylate, Decyl methacrylate, Cetyl-Eicosyl methacrylate mixture
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A, C, D
                  .912(a)(1), .1002(a), (b), .1004
                  I-D

                  n-Butyl propionate
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Butyl toluene
                  @A
                  P
                  II
                  NR
                  Open
                  Open
                  A
                  .409
                  I-D

                  Butyraldehyde (all isomers)
                  C
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409, .526
                  I-C

                  Butyric acid
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A
                  .238(a), .554
                  I-D

                  Calcium alkyl(C9)phenol sulfide, polyolefin phosphorosulfide mixture
                  A
                  P
                  II
                  NR
                  Open
                  Open
                  A, B
                  .409
                  NA

                    Calcium bromide, Zinc bromide solution, see Drilling brine (containing Zinc salts)

                  Calcium hypochlorite solution (15% or less)
                  C
                  S/P
                  III
                  4m
                  PV
                  Restr
                  NSR
                  .236(a), (b)
                  NA

                  Calcium hypochlorite solution (more than 15%)
                  B
                  S/P
                  III
                  4m
                  PV
                  Restr
                  NSR
                  .236(a), (b), .409
                  NA

                  Calcium long chain alkyl(C5-C10) phenate
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  NA

                  Calcium long chain alkyl salicylate (C13 + )
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A, B
                  (.440, .903, .908(a)) 1

                  NA

                  Camphor oil
                  B
                  S/P
                  II
                  4m
                  PV
                  Restr
                  A, B
                  .409
                  I-D

                  Carbolic oil
                  A
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A
                  .408, .440, .525, .526, .908(b), .933, .1020
                  NA

                  Carbon disulfide
                  B
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  C
                  .236(c), .252, .408, .500, .515, .520, .525, .526, .527, .1020, .1040
                  I-A

                  Carbon tetrachloride
                  B
                  S/P
                  III
                  B/3
                  PV
                  Closed
                  NSR
                  .316, .409, .525, .526, .527, .1020
                  NA

                  Cashew nut shell oil (untreated)
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A, B
                  .526, .933
                  NA

                  Caustic potash solution
                  C
                  S/P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .236(a), (c), (g), .933
                  NA

                  Caustic soda solution
                  D
                  S
                  III
                  NR
                  Open
                  Open
                  NSR
                  .236(a), (c), (g), .933
                  NA

                  Cetyl-Eicosyl methacrylate mixture
                  III
                  S
                  III
                  NR
                  Open
                  Open
                  A, C, D
                  .912(a)(1), .1002(a), (b), .1004
                  NA

                  Chlorinated paraffins (C10-C13)
                  A
                  P
                  I
                  NR
                  Open
                  Open
                  A
                  .408
                  NA

                  Chloroacetic acid (80% or less)
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  NSR
                  .238(e), .408, .440, .554, .908(b)
                  I-D

                  Chlorobenzene
                  B
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A, B
                  .409, .526
                  I-D

                  Chloroform
                  B
                  S/P
                  III
                  B/3
                  PV
                  Restr
                  NSR
                  .409, .525, .526, .527, .1020
                  NA

                  (crude) Chlorohydrins
                  D
                  S
                  II
                  B/3
                  PV
                  Closed
                  A
                  .408, .525, .526, .1020
                  I-D

                  4-Chloro-2-methylphenoxyacetic acid, dimethylamine salt solution
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .236(a), (b), (c), (g)
                  NA

                  o-Chloronitrobenzene
                  B
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, B, C, D
                  .316, .336, .408, .440, .525, .526, .908(a), (b), .933, .1020
                  NA

                  1-(4-Chlorophenyl)-4,4-dimethyl pentan-3-one
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A, B, D
                  .409, .440, .488, .908(a), (b)
                  NA

                  2- or 3-Chloropropionic acid
                  C
                  S/P
                  III
                  NR
                  Open
                  Open
                  A
                  .238(a), (b), .440, .554, .908(a), (b)
                  NA

                  Chlorosulfonic acid
                  C
                  S/P
                  I
                  B/3
                  PV
                  Closed
                  NSR
                  .408, .525, .526, .527, .554, .555, .602, .933, .1000, .1020, .1045
                  I-B

                  o-Chlorotoluene
                  A
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A, B, C
                  .409, .526
                  I-D

                  m-Chlorotoluene
                  B
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A, B, C
                  .409, .526
                  I-D

                  p-Chlorotoluene
                  B
                  S/P
                  II
                  4m
                  PV
                  Restr
                  A, B, C
                  .409, .440, .526, .908(b)
                  I-D

                  Chlorotoluenes (mixed isomers)
                  A
                  S/P
                  II
                  4m
                  PV
                  Restr
                  A, B, C
                  .409, .526
                  I-D

                  Coal tar
                  A
                  S/P
                  II
                  4m
                  PV
                  Restr
                  B, D
                  .409, .933, .1060
                  I-D

                  Coal tar naphtha solvent
                  B
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A, D
                  .409, .526, .933, .1060
                  I-D

                  Coal tar pitch (molten)
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  B, D
                  .252, .409, .933, .1060
                  I-D

                  Cobalt naphthenate in solvent naphtha
                  A
                  S/P
                  II
                  4m
                  PV
                  Restr
                  A, D
                  .409, .526
                  I-D

                  Coconut oil, fatty acid
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .440, .903, .908(a), (b)
                  NA

                  Cottonseed oil, fatty acid
                  [C]
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .440, .903, .908(a)
                  NA

                  Creosote (coal tar)
                  A
                  S/P
                  II
                  NR
                  Open
                  Open
                  A, B, D
                  .409
                  I-D

                  Creosote (wood)
                  A
                  S/P
                  II
                  NR
                  Open
                  Open
                  A, B, D
                  .409
                  NA

                  Cresols (all isomers)
                  A
                  S/P
                  II
                  NR
                  Open
                  Open
                  A, B
                  .409, .440, .908(b)
                  I-D

                    Cresols with less than 5% Phenol, see Cresols (all isomers)

                    Cresols with 5% or more Phenol, see Phenol

                  Cresylate spent caustic (mixtures of Cresols and Caustic soda solutions)
                  A
                  S/P
                  II
                  NR
                  Open
                  Open
                  NSR
                  .236(a), (c), .409, .933
                  NA

                  Cresylic acid, dephenolized
                  A
                  S/P
                  II
                  NR
                  Open
                  Open
                  A, B
                  .409
                  NA

                  Cresylic acid, sodium salt solution, see Cresylate spent caustic

                  Crotonaldehyde
                  A
                  S/P
                  II
                  B/3
                  PV
                  Restr
                  A
                  .316, .409, .525, .526, .527, .1020
                  I-C

                    Cumene (isopropylbenzene), see Propylbenzene (all isomers)

                  1,5,9-Cyclododecatriene
                  A
                  S/P
                  I
                  4m
                  PV
                  Restr
                  A
                  .236(b), (c), .408, .526, .912(a)(1), .1002(a), (b), .1004
                  I-D

                  Cycloheptane
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Cyclohexane
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409, .440, .908(b)
                  I-D

                  Cyclohexanone
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A
                  .236(a), (b), .409, .526
                  I-D

                  Cyclohexanone, Cyclohexanol mixture
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A
                  .236(a), (b), .526
                  I-D

                  Cyclohexyl acetate
                  B
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Cyclohexylamine
                  C
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A, C, D
                  .236(a), (b), (c), (g), .409, .526
                  I-D

                  1,3-Cyclopentadiene dimer (molten)
                  B
                  P
                  II
                  4m
                  PV
                  Restr
                  A
                  .409, .440, .488, .908(a), (b)
                  I-C

                  Cyclopentane
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Cyclopentene
                  B
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  p-Cymene
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  iso-Decaldehyde
                  @C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  I-C

                  n-Decaldehyde
                  @B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  I-C

                  Decanoic acid
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .440, .903, .908(a), (b)
                  NA

                  Decene
                  B
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Decyl acetate
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409
                  NA

                  (iso-, n-) Decyl acrylate
                  A
                  S/P
                  II
                  NR
                  Open
                  Open
                  A, C, D
                  .236(a), (b), (c), .409, .912(a)(1), .1002(a), (b), .1004
                  I-D

                  Decyl alcohol (all isomers)
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409, .440, .908(b)
                  I-D

                  Decyloxytetrahydro-thiophene dioxide
                  A
                  S/P
                  II
                  B/3
                  PV
                  Restr
                  A
                  .409, .526
                  NA

                  Dibromomethane
                  C
                  S/P
                  II
                  4m
                  PV
                  Restr
                  NSR
                  .236(a), (b), (d), .408, .525(a), (c), (d), (e), .526, .933, .1020
                  NA

                  Dibutylamine
                  C
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A, B, C, D
                  .236(b), (c), .409, .526
                  I-C

                  Dibutyl hydrogen phosphonate
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409, .440, .908(a)
                  NA

                    ortho-Dibutyl phthalate
                  A
                  P
                  II
                  NR
                  Open
                  Open
                  A
                  .409
                  I-D

                  Dichlorobenzene (all isomers) 1

                  B
                  S/P
                  II
                  4m
                  PV
                  Restr
                  A, B, D
                  .236(a), (b), .409, .440, .488 1, .526, .908(a), (b) 1

                  I-D

                  3,4-Dichloro-1-butene
                  B
                  S/P
                  III
                  B/3
                  PV
                  Closed
                  A, B, C
                  .316, .409, .525(a), (c), (d), (e), .526, .527, .933, .1020
                  I-D

                  1,1-Dichloroethane
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A, B
                  .409, .526, .527
                  I-D

                  2,2′-Dichloroethyl ether
                  B
                  S/P
                  II
                  4m
                  PV
                  Restr
                  A
                  .236(a), (b), .409, .526
                  I-C

                  1,6-Dichlorohexane
                  B
                  S/P
                  II
                  4m
                  PV
                  Restr
                  A, B
                  .409, .526
                  NA

                  2,2′-Dichloroisopropyl ether
                  C
                  S/P
                  II
                  B/3
                  PV
                  Restr
                  A, B, C, D
                  .236(a), (b), .316, .408(a), .440, .525, .526, .1020
                  I-D

                  Dichloromethane
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  NSR
                  .526
                  I-D

                  2,4-Dichlorophenol 4

                  A
                  S/P
                  II
                  4m
                  PV
                  Restr
                  A, B, C, D
                  .236(a), (b), (c), (g), .409, .440, .500, .501, .526, .908(b), .933
                  I-D

                  2,4-Dichlorophenoxyacetic acid, diethanolamine salt solution
                  A
                  S/P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .236(a), (b), (c), (g), .409
                  NA

                  2,4-Dichlorophenoxyacetic acid, dimethylamine salt solution
                  A
                  S/P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .236(a), (b), (c), (g), .409
                  NA

                  2,4-Dichlorophenoxyacetic acid, triisopropanolamine salt solution
                  A
                  S/P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .236(a), (b), (c), (g), .409
                  NA

                  1,1-Dichloropropane
                  C
                  S/P
                  II
                  B/3
                  PV
                  Restr
                  A, B
                  .409, .525, .526, .1020
                  I-D

                  1,2-Dichloropropane
                  C
                  S/P
                  II
                  B/3
                  PV
                  Restr
                  A, B
                  .409, .525, .526, .1020
                  I-D

                  1,3-Dichloropropane
                  D
                  S
                  II
                  B/3
                  PV
                  Restr
                  A, B
                  .409, .525, .526, .1020
                  I-D

                  1,3-Dichloropropene
                  B
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, B
                  .316, .336, .408, .525, .526, .527, .1020
                  I-D

                  Dichloropropene, Dichloropropane mixtures
                  B
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, B, C, D
                  .316, .336, .408, .526, .527
                  I-D

                  2,2-Dichloropropionic acid
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A
                  .238(e), .266, .500, .501, .554, .933
                  NA

                  Diethanolamine
                  D
                  S
                  III
                  NR
                  Open
                  Open
                  A
                  .236(b), (c)
                  NA

                  Diethylamine
                  C
                  S/P
                  III
                  B/3
                  PV
                  Restr
                  A
                  .236(a), (b), (c), (g), .409, .525, .526, .527, .1020
                  I-C

                  Diethylaminoethanol, see Diethylethanolamine

                  2,6-Diethylaniline
                  C
                  S/P
                  III
                  NR
                  Open
                  Open
                  B, C, D
                  .236(b), .409, .440, .908(b)
                  NA

                  Diethylbenzene
                  A
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Diethylenetriamine
                  D
                  S
                  III
                  NR
                  Open
                  Open
                  A
                  .236(b), (c)
                  NA

                  Diethylethanolamine
                  C
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A, C
                  .236(a), (b), (c), (g), .409, .526
                  I-C

                  Diethyl ether, see Ethyl ether

                  Di-(2-ethylhexyl) phosphoric acid
                  C
                  S/P
                  III
                  NR
                  Open
                  Open
                  A, B, C, D
                  .236(b), (c)
                  I-D

                  Diethyl phthalate
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  I-D

                  Diethyl sulfate
                  B
                  S/P
                  II
                  4m
                  PV
                  Closed
                  A, D
                  .236(a), (c), (d), .409, .526, .933
                  I-D

                  Diglycidyl ether of Bisphenol A
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409, .440, .908(a)
                  NA

                  Diglycidyl ether of Bisphenol F
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409, .440, .908(a)
                  NA

                  Di-n-hexyl adipate
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409
                  NA

                  Diisobutylamine
                  C
                  S/P
                  II
                  4m
                  PV
                  Restr
                  A, B, C, D
                  .236(a), (b), (c), (g), .409, .525(a), (c), (d), (e), .526, .1020
                  I-C

                  Diisobutylcarbinol
                  @C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  I-D

                  Diisobutylene
                  B
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Diisobutyl phthalate
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409, .440, .908(a)
                  I-D

                  Diisopropanolamine
                  C
                  S/P
                  III
                  NR
                  Open
                  Open
                  A
                  .236(b), (c), .440, .908(a), (b)
                  I-D

                  Diisopropylamine
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A
                  .236(b), (c), .408, .525, .526, .527, .1020
                  I-C

                  Diisopropylbenzene (all isomers)
                  A
                  P
                  II
                  NR
                  Open
                  Open
                  A
                  .409
                  I-D

                  N,N-Dimethylacetamide
                  D
                  S
                  III
                  B/3
                  PV
                  Restr
                  B
                  .236(b), .316, .525, .526, .527, .1020
                  I-D

                  N,N-Dimethylacetamide solution (40% or less)
                  D
                  S
                  III
                  B/3
                  PV
                  Restr
                  B
                  .236(b), .316, .526
                  I-D

                  Dimethyl adipate
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409, .440, .908(b)
                  NA

                  Dimethylamine solution (45% or less)
                  C
                  S/P
                  III
                  B/3
                  PV
                  Restr
                  A, C, D
                  .236(a), (b), (c), (g), .409, .525, .526, .527, .1020
                  I-C

                  Dimethylamine solution (over 45% but not over 55%)
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, C, D
                  .236(a), (b), (c), (g), .316, .408, .525, .526, .527, .1020
                  I-C

                  Dimethylamine solution (over 55% but not over 65%)
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, C, D
                  .236(a), (b), (c), (g), .316, .372, .408, .525, .526, .527, .1020
                  I-C

                  2,6-Dimethylaniline
                  [C]
                  S/P
                  III
                  NR
                  Open
                  Open
                  B, C, D
                  .236(b), .409, .440, .908(b)
                  I-D

                  N,N-Dimethylcyclohexylamine
                  C
                  S/P
                  II
                  B/3
                  PV
                  Restr
                  A, C
                  .236(a), (b), (c), (g), .316, .409, .525, .526, .527, .1020
                  NA

                  N,N-Dimethyldodecylamine
                  A
                  S/P
                  I
                  NR
                  Open
                  Open
                  B
                  .236(b), .408
                  NA

                  Dimethylethanolamine
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A, D
                  .236(b), (c), .409, .526
                  I-C

                  Dimethylformamide
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A, D
                  .236(b), .409, .526
                  I-D

                  Dimethyl glutarate
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  NA

                  Dimethyl hydrogen phosphite
                  B
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A, D
                  .526
                  NA

                  Dimethyl naphthalene sulfonic acid, sodium salt solution
                  [A]
                  P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .409
                  NA

                  Dimethyloctanoic acid
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .440, .903, .908(b)
                  I-D

                  Dimethyl phthalate
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  I-D

                  Dimethyl succinate
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .440, .908(b)
                  NA

                  Dinitrotoluene (molten)
                  A
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A
                  .316, .408, .525, .526, .527, .1003, .1020
                  I-C

                  1,4-Dioxane
                  D
                  S
                  II
                  B/3
                  PV
                  Closed
                  A
                  .408, .525, .526, .1020
                  I-C

                  Dipentene
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Diphenyl
                  A
                  P
                  I
                  NR
                  Open
                  Open
                  B
                  .408
                  I-D

                  Diphenylamine (molten)
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  B, D
                  .236(b), .409, .440, .488, .908(b)
                  NA

                  Diphenylamines, alkylated
                  A
                  P
                  II
                  NR
                  Open
                  Open
                  A
                  .409
                  NA

                  Diphenylamine, reaction product with 2,2,4-Trimethylpentene
                  A
                  S/P
                  I
                  NR
                  Open
                  Open
                  A
                  .408
                  NA

                  Diphenyl, Diphenyl ether mixtures
                  A
                  P
                  I
                  NR
                  Open
                  Open
                  B
                  .408
                  I-D

                  Diphenyl ether
                  A
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409
                  I-D

                  Diphenyl ether, Biphenyl phenyl ether mixture
                  A
                  P
                  III
                  NR
                  Open
                  Open
                  A, B
                  .409
                  NA

                  Diphenylmethane diisocyanate 6

                  B
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, B, C 6, D
                  .236(a), (b), .316, .409, .440, .500, .501, .525, .526, .602, .908(a), .1000, .1020
                  NA

                  Diphenylol propane-epichlorohydrin resins
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A, B
                  .409, .440, .908(a)
                  NA

                  Di-n-propylamine
                  C
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A
                  .236(b), (c), .409, .525, .526, .1020
                  I-C

                  Dithiocarbamate ester (C7-C35)
                  A
                  P
                  II
                  NR
                  Open
                  Open
                  A, D
                  .409
                  NA

                  Dodecanol
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409, .440, .488, .908(a), (b)
                  I-D

                  Dodecene (all isomers)
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409
                  I-D

                  Dodecyl alcohol, see Dodecanol

                  Dodecylamine, Tetradecylamine mixture
                  A
                  S/P
                  II
                  4m
                  PV
                  Restr
                  A, D
                  .236(b), (c), .409, .526
                  NA

                  Dodecyldimethylamine, Tetradecyldimethylamine mixture
                  A
                  S/P
                  II
                  NR
                  Open
                  Open
                  B, C, D
                  .236(b), .409
                  NA

                  Dodecyl diphenyl ether disulfonate solution
                  A
                  S/P
                  II
                  NR
                  Open
                  Open
                  NSR
                  .409
                  NA

                  Dodecyl hydroxypropyl sulfide
                  A
                  P
                  I
                  NR
                  Open
                  Open
                  A
                  .408
                  NA

                  Dodecyl methacrylate
                  III
                  S
                  III
                  NR
                  Open
                  Open
                  A, C
                  .236(b), (c), .912(a)(1), .1004
                  I-D

                  Dodecyl-Octadecyl methacrylate mixture
                  D
                  S
                  III
                  NR
                  Open
                  Restr
                  A, D
                  .236(b), .912(a)(1), .1002(a), (b), .1004
                  NA

                  Dodecyl-Pentadecyl methacrylate mixture
                  III
                  S
                  III
                  NR
                  Open
                  Open
                  A, C, D
                  .912(a)(1), .1002(a), (b), .1004
                  NA

                  Dodecyl phenol
                  A
                  P
                  I
                  NR
                  Open
                  Open
                  A
                  .408
                  I-D

                  Drilling brine (containing Zinc salts)
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .409
                  NA

                  Epichlorohydrin
                  A
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A
                  .316, .408, .525, .526, .527, .1020
                  I-C

                  Ethanolamine
                  D
                  S
                  III
                  NR
                  Open
                  Open
                  A
                  .236(b), (c), .526
                  I-D

                  2-Ethoxyethyl acetate
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-C

                  Ethyl acrylate
                  A
                  S/P
                  II
                  4m
                  PV
                  Restr
                  A
                  .409, .526, .527, .912(a)(1), .1002(a), (b), .1004
                  I-D

                  Ethylamine
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  C, D
                  .236(b), (c), .252, .372, .409, .525, .526, .527, .1020
                  I-D

                  Ethylamine solution (72% or less)
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, C
                  .236(a), (b), (c), (g), .372, .408, .525(a), (c), (d), (e), .526, .527, .1020
                  I-D

                  Ethyl amyl ketone
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Ethylbenzene
                  B
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  N-Ethylbutylamine
                  C
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A
                  .236(a), (b), (c), (g), .409, .525(a), (c), (d), (e), .526, .1020
                  I-C

                  Ethyl tert-butyl ether
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-C

                  Ethyl butyrate
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Ethylcyclohexane
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  N-Ethylcyclohexylamine
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A, C
                  .236(a), (b), (c), (g), .409, .526
                  I-C

                  S-Ethyl dipropylthiocarbamate
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  NA

                  Ethylene chlorohydrin
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, D
                  .316, .408, .525, .526, .527, .933, .1020
                  I-D

                  Ethylene cyanohydrin
                  D
                  S
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  NA

                  Ethylenediamine
                  C
                  S/P
                  II
                  4m
                  PV
                  Restr
                  A
                  .236(b), (c), .409, .440, .526, .908(b)
                  I-D

                  Ethylene dibromide
                  B
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  NSR
                  .408, .440, .525, .526, .527, .908(b), .1020
                  NA

                  Ethylene dichloride
                  B
                  S/P
                  II
                  4m
                  PV
                  Restr
                  A, B
                  .236(b), .408, .526
                  I-D

                  Ethylene glycol butyl ether acetate
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  I-C

                  Ethylene glycol diacetate
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  I-D

                    Ethylene glycol ethyl ether acetate, see 2-Ethoxyethyl acetate

                  Ethylene glycol methyl ether acetate
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  I-C

                  Ethylene glycol monoalkyl ether
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-C

                   Including:

                   2-Ethoxyethanol

                   Ethylene glycol butyl ether

                   Ethylene glycol tert-butyl ether

                   Ethylene glycol ethyl ether

                   Ethylene glycol hexyl ether

                   Ethylene glycol methyl ether

                   Ethylene glycol n-propyl ether

                   Ethylene glycol isopropyl ether

                  Ethylene oxide (30% or less), Propylene oxide mixture
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, C
                  .252, .372, .408, .440, .500, .525, .526, .530, .1010, .1011, .1020
                  I-B

                  Ethyl ether
                  III
                  S
                  II
                  4m
                  PV
                  Closed
                  A
                  .236(g), .252, .372, .408, .440, .500, .515, .526, .527
                  I-C

                  Ethyl-3-ethoxypropionate
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  NA

                  2-Ethylhexanol
                  @C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  I-D

                  2-Ethylhexyl acrylate
                  B
                  S/P
                  III
                  NR
                  Open
                  Open
                  A
                  .409, .912(a)(1), .1002(a), (b), .1004
                  I-D

                  2-Ethylhexylamine
                  B
                  S/P
                  II
                  B/3
                  PV
                  Restr
                  A
                  .236(b), (c), .409, .525, .526, .1020
                  I-D

                  Ethyl hexyl phthalate
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  NA

                  Ethylidene norbornene
                  B
                  S/P
                  III
                  B/3
                  PV
                  Restr
                  A, B, C, D
                  .236(b), .409, .526
                  NA

                  Ethyl methacrylate
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A, B, D
                  .409, .526, .912(a)(1), .1002(a), (b), .1004
                  I-D

                  Ethylphenol
                  A
                  S/P
                  III
                  NR
                  Open
                  Open
                  B
                  .409
                  I-D

                  2-Ethyl-3-propylacrolein
                  A
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409, .526
                  I-C

                  Ethyl toluene
                  B
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Ferric chloride solutions
                  C
                  S/P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .409, .440, .554, .555, .908(b), .1045
                  I-B

                  Ferric nitrate, Nitric acid solution
                  C
                  S/P
                  II
                  4m
                  PV
                  Restr
                  NSR
                  .408, .526, .527, .554, .555, .559, .933, .1045
                  I-B

                  Fluorosilicic acid (30% or less)
                  C
                  S/P
                  III
                  B/3
                  PV
                  Restr
                  NSR
                  .252, .526, .527, .554, .555, .933, .1045
                  I-B

                  Formaldehyde (50% or more), Methanol mixtures
                  #
                  S/P
                  III
                  4m
                  PV
                  Closed
                  A
                  .409, .526, .527
                  I-B

                  Formaldehyde solution (37% to 50%)
                  C
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409, .440, .526, .527, .908(b)
                  I-B

                  Formic acid
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A
                  .238(b), (c), .409, .526, .527, .554, .933
                  I-D

                  Fumaric adduct of rosin, water dispersion
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .409, .440, .908(a)
                  NA

                  Furfural
                  C
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409, .526
                  I-C

                  Furfuryl alcohol
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  I-C

                  Glutaraldehyde solution (50% or less)
                  D
                  S
                  III
                  NR
                  Open
                  Open
                  NSR
                  None
                  NA

                  Glycidyl ester of C10 Trialkyl acetic acid, see Glycidyl ester of Tridecyl acetic acid

                  Glycidyl ester of Tridecyl acetic acid
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409
                  NA

                  Glyoxylic acid solution (50% or less)
                  D
                  S
                  III
                  NR
                  Open
                  Open
                  A, C, D
                  .238(e), .554(a), (b), (c), .933, .1002
                  NA

                  Heptane (all isomers), see Alkanes(C6-C9) (all isomers)
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Heptanol (all isomers)
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Heptene (all isomers)
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Heptyl acetate
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409
                  NA

                  Hexamethylenediamine (molten)
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  C
                  .236(a), (b), (c), (g), .316, .336, .409, .440, .525, .526, .527, .908(a), (b), .933, .1020
                  NA

                  Hexamethylenediamine solution
                  C
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A
                  .236(b), (c), .409, .440, .526, .908(b)
                  I-D

                  Hexamethylene diisocyanate. 6

                  B
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, C 6, D
                  .238(d), .252, .316, .336, .408, .500, .501, .525, .526, .527, .602, .1000, .1020
                  NA

                  Hexamethyleneimine
                  C
                  S/P
                  II
                  4m
                  PV
                  Restr
                  A, C
                  .236(a), (b), (c), (g), .409, .526
                  I-C

                  Hexane (all isomers), see Alkanes(C6-C9)
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Hexene (all isomers)
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Hexyl acetate
                  B
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Hydrochloric acid
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  NSR
                  .252, .526, .527, .554, .557, .933, .1045, .1052
                  I-B

                  Hydrogen peroxide solutions (over 8% but not over 60%)
                  C
                  S/P
                  III
                  B/3
                  PV
                  Closed
                  NSR
                  .238(a), (c), .355, .409, .440(a)(1)&(2), .500, .933, .1004(a)(2), .1500
                  NA

                  Hydrogen peroxide solutions (over 60% but not over 70%)
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  NSR
                  .238(a), (c), .355, .409, .440(a)(1)&(2), .500, .933, .1004(a)(2), .1500
                  NA

                  2-Hydroxyethyl acrylate
                  B
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A
                  .408, .525, .526, .912(a)(1), .933, .1002(a), (b), .1004, .1020
                  NA

                  N,N-bis(2-Hydroxyethyl) oleamide
                  B
                  P
                  II
                  4m
                  PV
                  Restr
                  A
                  .409, .440, .488, .908(a), (b)
                  NA

                  2-Hydroxy-4-(methylthio)butanoic acid
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .440, .903, .908(a)
                  NA

                    alpha-hydro-omega-Hydroxytetradeca(oxytetra methylene), see Poly(tetramethylene ether) glycols (mw 950-1050)

                  Icosa (oxypropane-2,3-diyl)s
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409, .440, .908(a)
                  NA

                  Isophorone diamine
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A
                  .236(b), (c), .526
                  NA

                  Isophorone diisocyanate 6

                  B
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, B, C 6, D
                  .236(a), (b), .316, .409, .500, .501, .525, .526, .602, .1000, .1020
                  NA

                  Isoprene
                  C
                  S/P
                  III
                  4m
                  PV
                  Restr
                  B
                  .372, .409, .440, .912(a)(1), .1002(a), (b), .1004
                  I-D

                    Isopropylbenzene, see Propylbenzene (all isomers)

                  Lactonitrile solution (80% or less)
                  B
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, C, D
                  .238(d), .252, .316, .336, .408, .440, .525, .526, .527, .908(a), .912(a)(2), .1002, .1004, .1020, .1035
                  I-D

                  Lauric acid
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409, .440, .488, .908(a), (b)
                  NA

                  Lauryl polyglucose (50% or less), see Alkyl(C12-C14) polyglucoside solution (55% or less)

                  Long chain alkaryl polyether (C11-C20)
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A, B
                  (.440, .903, .908(a)) 1

                  NA

                  Long chain polyetheramine in alkyl(C2-C4)benzenes
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409, .440, .903, .908(a)
                  I-D

                  Magnesium long chain alkyl salicylate (C11 + )
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A, B
                  (.440, .903, .908(a)) 1

                  NA

                  Maleic anhydride 7

                  D
                  S
                  III
                  4m
                  PV
                  Restr

                    7A, C
                  None
                  I-D

                  Mercaptobenzothiazol, sodium salt solution, see Sodium-2-mercaptobenzothiazol solution

                  Mesityl oxide
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A
                  .236(b), (c), .409, .526
                  I-D

                  Metam sodium solution
                  A
                  S/P
                  II
                  NR
                  Open
                  Open
                  NSR
                  .236(a), (b), (c), (g), .409
                  NA

                  Methacrylic acid
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A
                  .238(a), .526, .912(a)(1), .1002(a), .1004
                  NA

                  Methacrylic resin in Ethylene dichloride
                  B
                  S/P
                  II
                  4m
                  PV
                  Restr
                  A, B
                  .236(b), .408, .440, .526, .908(a)
                  I-D

                  Methacrylonitrile
                  D
                  S
                  II
                  B/3
                  PV
                  Closed
                  A
                  .236(b), .316, .408, .525, .526, .527, .912(a)(1), .1002(a), .1004, .1020
                  NA

                  N-(2-Methoxy-1-methyl ethyl)-2-ethyl-6-methyl chloroacetanilide, see Metolachlor

                  Methyl acrylate
                  B
                  S/P
                  II
                  4m
                  PV
                  Restr
                  A, B
                  .409, .526, .527, .912(a)(1), .1002(a), (b), .1004
                  I-D

                  Methylamine solution (42% or less)
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, C, D
                  .236(a), (b), (c), (g), .316, .408, .525, .526, .527, .1020
                  I-D

                  Methylamyl acetate
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Methylamyl alcohol
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Methyl butyrate
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Methylcyclohexane
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Methylcyclopentadiene dimer
                  B
                  P
                  III
                  4m
                  PV
                  Restr
                  B
                  .409
                  I-B

                  Methyl diethanolamine
                  D
                  S
                  III
                  NR
                  Open
                  Open
                  A
                  .236(b), (c)
                  I-C

                    Methylene chloride, see Dichloromethane

                  2-Methyl-6-ethylaniline
                  C
                  S/P
                  III
                  NR
                  Open
                  Open
                  A, B, C, D
                  None
                  NA

                  2-Methyl-5-ethylpyridine
                  B
                  S/P
                  III
                  NR
                  Open
                  Open
                  A, D
                  .236(b), .409
                  I-D

                  Methyl formate
                  D
                  S
                  II
                  B/3
                  PV
                  Restr
                  A
                  .372, .408, .440, .525, .526, .527, .1020
                  I-D

                  Methyl heptyl ketone
                  B
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  2-Methyl-2-hydroxy-3-butyne
                  III
                  S
                  III
                  4m
                  PV
                  Restr
                  A, B, C, D
                  .236(b), (d), (f), (g), .409, .526
                  I-D

                  Methyl methacrylate
                  D
                  S
                  II
                  4m
                  PV
                  Restr
                  A, B
                  .409, .526, .912(a)(1), .1002(a), (b), .1004
                  I-D

                  Methyl naphthalene (molten)
                  A
                  S/P
                  II
                  4m
                  PV
                  Restr
                  A, D
                  .409
                  I-D

                    2-Methyl-1-pentene (Hexene (all isomers)), see Alkanes(C6-C9)

                    4-Methyl-1-pentene (Hexene (all isomers)), see Alkanes(C6-C9)

                  Methyl tert-pentyl ether, see tert-Amyl methyl ether

                  2-Methylpyridine
                  D
                  S
                  II
                  B/3
                  PV
                  Closed
                  A, C
                  .236(b), .408, .525(a), (c), (d), (e), .1020
                  I-D

                  3-Methylpyridine
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, C
                  .236(b), .408, .525(a), (c), (d), (e), .1020
                  I-D

                  4-Methylpyridine
                  D
                  S
                  II
                  B/3
                  PV
                  Closed
                  A, C, D
                  .236(b), .408, .440, .525(a), (c), (d), (e), .526, .908(b), .1020
                  I-D

                  Methyl salicylate
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409
                  I-D

                  alpha-Methylstyrene
                  A
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A, D
                  .409, .526, .912(a)(1), .1002(a), (b), .1004
                  I-D

                  3-(Methylthio) propionaldehyde
                  B
                  S/P
                  III
                  B/3
                  PV
                  Closed
                  B, C
                  .238(e), .316, .408, .525, .526, .527, .1020
                  NA

                  Metolachlor
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409
                  NA

                  Morpholine
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A
                  .236(b), (c), .409
                  I-C

                  Motor fuel anti-knock compounds (containing lead alkyls)
                  A
                  S/P
                  I
                  B/3
                  PV
                  Closed
                  A, B, C
                  .252, .316, .336, .408, .525, .526, .527, .933, .1020, .1025
                  I-D

                  Naphthalene (molten)
                  A
                  S/P
                  II
                  4m
                  PV
                  Restr
                  A, D
                  .409, .440, .908(b)
                  I-D

                  Naphthalene sulfonic acid, sodium salt solution (40% or less)
                  [A]
                  P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .409
                  NA

                  Naphthenic acid
                  A
                  P
                  II
                  NR
                  Open
                  Open
                  A
                  .409
                  NA

                  Naphthenic acid, sodium salt solution
                  [A]
                  P
                  II
                  NR
                  Open
                  Open
                  NSR
                  .409
                  NA

                  Neodecanoic acid
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  NA

                  Nitrating acid (mixture of sulfuric and nitric acids)
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  NSR
                  .316, .408, .526, .527, .554, .555, .556, .559, .602, .933, .1000, .1045
                  I-B

                  Nitric acid (70% or less)
                  C
                  S/P
                  II
                  4m
                  PV
                  Restr
                  NSR
                  .408, .526, .527, .554, .555, .559, .933, .1045
                  I-B

                  Nitrobenzene
                  B
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, D
                  .316, .336, .408, .440, .525, .526, .908(b), .933, .1020
                  I-D

                  Nitroethane 7

                  D
                  S
                  III
                  4m
                  PV
                  Restr

                    7A, C
                  .236(b), .409, .526, .1002(a), (b), .1003
                  I-C

                  Nitroethane, 1-Nitropropane (each 15% or more) mixture 7

                  D
                  S
                  III
                  4m
                  PV
                  Restr

                    7A
                  .236(b), .409, .526, .1002
                  I-C

                  o-Nitrophenol (molten)
                  B
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, C, D
                  .409, .440, .525, .526, .908(a), (b), .1020
                  NA

                  1- or 2-Nitropropane 7

                  D
                  S
                  III
                  4m
                  PV
                  Restr

                    7A, C
                  .409, .526
                  I-C

                  Nitropropane (60%), Nitroethane (40%) mixture 7

                  D
                  S
                  III
                  4m
                  PV
                  Restr

                    7A, C
                  .236(b), .409, .526
                  I-C

                  Nitropropane (20%), Nitroethane (80%) mixture 7

                  D
                  S
                  III
                  4m
                  PV
                  Restr

                    7A, C
                  .236(b), .409, .526, .1002(a), (b), .1003
                  I-C

                  (o-, p-) Nitrotoluene
                  B
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, B
                  .316, .408, .440, .525, .526, .908(b), .1020
                  I-D

                  Nonane (all isomers), see Alkanes(C6-C9)
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  B, C
                  .409
                  I-D

                  Nonene (all isomers)
                  B
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Nonyl acetate
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409
                  I-D

                  Nonyl alcohol (all isomers)
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  I-D

                  Nonyl phenol
                  A
                  P
                  II
                  NR
                  Open
                  Open
                  A
                  .409
                  I-D

                  Nonyl phenol poly(4 + )ethoxylates
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409, .440, .488 1, .908(a), (b)
                  I-D

                  Noxious liquid, N.F., (1) n.o.s. (“trade name” contains “principal components”) ST 1, Cat A
                  A
                  P
                  I
                  NR
                  Open
                  Open
                  A
                  .408
                  NA

                  Noxious liquid, F., (2) n.o.s. (“trade name” contains “principal components”) ST 1, Cat A
                  A
                  P
                  I
                  4m
                  PV
                  Restr
                  A
                  .408
                  NA

                  Noxious liquid, N.F., (3) n.o.s. (“trade name” contains “principal components”) ST 2, Cat A
                  A
                  P
                  II
                  NR
                  Open
                  Open
                  A
                  .409
                  NA

                  Noxious liquid, F., (4) n.o.s. (“trade name” contains “principal components”) ST 2, Cat A
                  A
                  P
                  II
                  4m
                  PV
                  Restr
                  A
                  .409
                  NA

                  Noxious liquid, N.F., (5) n.o.s. (“trade name” contains “principal components”) ST 2, Cat B
                  B
                  P
                  II
                  NR
                  Open
                  Open
                  A
                  .409; (.440, .908) 1

                  NA

                  Noxious liquid, N.F., (6) n.o.s. (“trade name” contains “principal components”) ST 2, Cat B, mp. equal to or greater than 15 deg. C
                  B
                  P
                  II
                  NR
                  Open
                  Open
                  A
                  .409, .440, .488, .908(b); (.908(a)) 1

                  NA

                  Noxious liquid, F., (7) n.o.s. (“trade name” contains “principal components”) ST 2, Cat B
                  B
                  P
                  II
                  4m
                  PV
                  Restr
                  A
                  .409; (.440, .908) 1

                  NA

                  Noxious liquid, F., (8) n.o.s. (“trade name” contains “principal components”) ST 2, Cat B, mp. equal to or greater than 15 deg. C
                  B
                  P
                  II
                  4m
                  PV
                  Restr
                  A
                  .409, .440, .488, .908(b); (.908(a)) 1

                  NA

                  Noxious liquid, N.F., (9) n.o.s. (“trade name” contains “principal components”) ST 3, Cat A
                  A
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409
                  NA

                  Noxious liquid, F., (10) n.o.s. (“trade name” contains “principal components”) ST 3, Cat A
                  A
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  NA

                  Noxious liquid, N.F., (11) n.o.s. (“trade name” contains “principal components”) ST 3, Cat B
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  (.409, .440, .908) 1

                  NA

                  Noxious liquid, N.F., (12) n.o.s. (“trade name” contains “principal components”) ST 3, Cat B, mp. equal to or greater than 15 deg. C
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409, .440, .488, .908(b); (.908(a)) 1

                  NA

                  Noxious liquid, F., (13) n.o.s. (“trade name” contains “principal components”) ST 3, Cat B
                  B
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409; (.440, .908) 1

                  NA

                  Noxious liquid, F., (14) n.o.s. (“trade name” contains “principal components”) ST 3, Cat B, mp. equal to or greater than 15 deg. C
                  B
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409, .440, .488, .908(b); (.908(a)) 1

                  NA

                  Noxious liquid, N.F., (15) n.o.s. (“trade name” contains “principal components”) ST 3, Cat C
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  (.440, .903, .908) 1

                  NA

                  Noxious liquid, F., (16) n.o.s. (“trade name” contains “principal components”) ST 3, Cat C
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  (.440, .903, .908) 1

                  NA

                  Octane (all isomers), see Alkanes(C6-C9)
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Octanol (all isomers)
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  I-D

                  Octene (all isomers)
                  B
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Octyl acetate
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  I-D

                  Octyl aldehydes
                  B
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409, .440, .908(b)
                  I-C

                    Octyl nitrates (all isomers), see Alkyl(C7-C9) nitrates

                  Olefin mixtures (C5-C7)
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Olefin mixtures (C5-C15)
                  B
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  alpha-Olefins (C6-C18) mixtures
                  B
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409, .440, .908(a), (b)
                  I-D

                  Oleum
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  NSR
                  .316, .408, .440, .526, .527, .554, .555, .556, .602, .908(a), .933, .1000, .1045, .1052
                  I-B

                  Oleylamine
                  A
                  S/P
                  II
                  4m
                  PV
                  Restr
                  A
                  .409, .526
                  NA

                  Palm kernel acid oil
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A, B
                  .440, .903, .908(a), (b)
                  NA

                  Paraldehyde
                  C
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409, .440, .908(b)
                  I-C

                  Paraldehyde-ammonia reaction product
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A
                  .236 (a), (b), (c), (g), .525(a), (c), (e), .408, .526, .1020
                  NA

                  Pentachloroethane
                  B
                  S/P
                  II
                  B/3
                  PV
                  Restr
                  NSR
                  .316, .409, .525, .526, .1020
                  NA

                  1,3-Pentadiene
                  C
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A, B
                  .409, .526, .912(a)(1), .1002, .1004
                  I-D

                  Pentane (all isomers)
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .372, .409
                  I-D

                  n-Pentanoic acid (64%), 2-Methyl butyric acid (36%) mixture
                  D
                  S
                  II
                  B/3
                  Open
                  Closed
                  A, D
                  .238(a), .408, .525(a), (c), (e), .554, .933, .1020
                  I-D

                  Pentene (all isomers)
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  n-Pentyl propionate
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Perchloroethylene
                  B
                  S/P
                  III
                  B/3
                  PV
                  Restr
                  NSR
                  .409, .526
                  NA

                  Phenol (or solutions with 5% or more Phenol)
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A
                  .408, .440, .488, .525, .526, .908(a), (b), .933, .1020
                  I-D

                  1-Phenyl-l-xylyl ethane
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A, B
                  None
                  NA

                  Phosphate esters, alkyl(C12-C14)amine
                  B
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  NA

                  Phosphoric acid
                  D
                  S
                  III
                  NR
                  Open
                  Open
                  NSR
                  .554, .555, .558, .1045, .1052, .933
                  I-B

                  Phthalic anhydride (molten)
                  C
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A, D
                  .440, .908(a), (b)
                  I-D

                    Pinene, see the alpha- or beta- isomers

                  alpha-Pinene
                  A
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  beta-Pinene
                  B
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Pine oil
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .440, .908(a)
                  I-D

                  Polyalkyl(C18-C22) acrylate in Xylene
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409, .440, .903, .908(a)
                  NA

                  Polyalkylene oxide polyol
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .440, .903, .908(a)
                  NA

                  Poly(2 + )cyclic aromatics
                  A
                  P
                  II
                  4m
                  PV
                  Restr
                  A, D
                  .409
                  I-D

                  Polyethylene polyamines
                  C
                  S/P
                  III
                  NR
                  Open
                  Open
                  A
                  .236(b), (c), .400, .440, .908(b)
                  NA

                  Polyferric sulfate solution
                  C
                  S/P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .238(d)
                  NA

                  Polyisobutenamine in aliphatic (C10-C14) solvent
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .903
                  NA

                  Polymethylene polyphenyl isocyanate 6

                  D
                  S
                  II
                  B/3
                  PV
                  Closed
                  A, C 6, D
                  .236(a), (b), .409, .500, .501, .525, .526, .602, .1000, .1020
                  NA

                  Polyolefinamine (C28-C250)
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  NA

                  Polyolefinamine in alkyl(C2-C4)benzenes
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409, .440, .903, .908(a)
                  I-D

                  Polyolefin phosphorosulfide, barium derivative (C28-C250)
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A, B
                  (.440, .903, .908(a)) 1

                  NA

                  Poly(tetramethylene ether) glycols (mw 950-1050)
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A, D
                  .409, .440, .488, .908(a), (b)
                  NA

                  Potassium hydroxide solution, see Caustic potash solution

                  Potassium oleate
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409
                  NA

                  Potassium thiosulfate (50% or less)
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  NSR
                  None
                  NA

                  iso-Propanolamine
                  C
                  S/P
                  III
                  NR
                  Open
                  Open
                  A
                  .236(b), (c), .440, .526, .903, .908(b)
                  I-D

                  n-Propanolamine
                  C
                  S/P
                  III
                  NR
                  Open
                  Open
                  A, D
                  .236(b), (c), .440, .526, .908(b)
                  NA

                  Propionaldehyde
                  C
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A
                  .316, .409, .526, .527
                  I-C

                  Propionic acid
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A
                  .238(a), .409, .527, .554, .933
                  I-D

                  Propionic anhydride
                  C
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A
                  .238(a), .526
                  I-D

                  Propionitrile
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, D
                  .252, .316, .336, .408, .525, .526, .527, .1020
                  I-D

                  iso-Propylamine
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  C, D
                  .236(b), (c), .372, .408, .440, .525, .526, .527, .1020
                  I-D

                  iso-Propylamine solution (70% or less)
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  C, D
                  .236(a), (b), (c), (g), .408, .440, .525, .526, .527, .1020
                  I-D

                  n-Propylamine
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, C, D
                  .236(b), (c), .408, .500, .525, .526, .527, .1020
                  I-D

                    n-Propylbenzene, see Propylbenzene (all isomers)

                  Propylbenzene (all isomers)
                  A
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  n-Propyl chloride
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A, B
                  .409
                  I-D

                  iso-Propylcyclohexane
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409, .440, .903, .908(a)
                  I-D

                  Propylene dimer
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  NA

                  Propylene oxide
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, C
                  .372, .408, .440, .500, .526, .530, .1010, .1011
                  I-B

                  Propylene tetramer
                  B
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Propylene trimer
                  B
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  iso-Propyl ether
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A
                  .409, .500, .515, .912(a)(1)
                  I-D

                  Pyridine
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A
                  .236(b), .409
                  I-D

                  Rosin, see Rosin oil

                  Rosin oil
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409, .440, .488, .908(a), (b)
                  I-D

                  Rosin soap (disproportionated) solution
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409
                  NA

                  Sodium alkyl (C14-C17) sulfonates 60-65% solution, see Alkane (C14-C17) sulfonic acid, sodium salt solution

                  Sodium aluminate solution
                  D
                  S
                  III
                  NR
                  Open
                  Open
                  NSR
                  .236(a), (b), (c), (g), .933
                  NA

                  Sodium borohydride (15% or less), Sodium hydroxide solution
                  C
                  S/P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .236(a), (b), (c), (g), .440, .908(a), .933
                  NA

                  Sodium chlorate solution (50% or less)
                  III
                  S
                  III
                  NR
                  Open
                  Open
                  NSR
                  .409, .933, .1065
                  NA

                  Sodium dichromate solution (70% or less)
                  C
                  S/P
                  II
                  B/3
                  Open
                  Closed
                  NSR
                  .236(b), (c), .408, .525, .933, .1020
                  NA

                    Sodium dimethyl naphthalene sulfonate solution, see Dimethyl naphthalene sulfonic acid, sodium salt solution

                  Sodium hydrogen sulfide (6% or less), Sodium carbonate (3% or less) solution
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .409
                  NA

                  Sodium hydrogen sulfite solution (45% or less)
                  D
                  S
                  III
                  NR
                  Open
                  Open
                  NSR
                  None
                  NA

                  Sodium hydrosulfide solution (45% or less)
                  B
                  S/P
                  III
                  4m
                  PV
                  Restr
                  NSR
                  .409, .440, .526, .908(b), .933
                  NA

                  Sodium hydrosulfide, Ammonium sulfide solution
                  B
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, C
                  .236(a), (b), (c), (g), .316, .372, .408, .525, .526, .527, .933, .1002, .1020
                  NA

                  Sodium hydroxide solution, see Caustic soda solution

                  Sodium hypochlorite solution (15% or less)
                  C
                  S/P
                  III
                  4m
                  PV
                  Restr
                  NSR
                  .236(a), (b), .933
                  NA

                  Sodium long chain alkyl salicylate (C13 + )
                  [C]
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  (.440, .903, .908(a)) 1

                  NA

                  Sodium-2-mercaptobenzothiazol solution
                  B
                  S/P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .236(a), (b), (c), (g), .409, .440, .908(b), .933
                  NA

                    Sodium N-methyldithiocarbamate solution, see Metam sodium solution

                    Sodium naphthalene sulfonate solution (40% or less), see Naphthalene sulfonic acid, sodium salt solution (40% or less)

                    Sodium naphthenate solution, see Naphthenic acid, sodium salt solution

                  Sodium nitrite solution
                  B
                  S/P
                  II
                  NR
                  Open
                  Open
                  NSR
                  .408, .525(a), (c), (d), (e), .1020
                  NA

                  Sodium petroleum sulfonate
                  B
                  S/P
                  II
                  NR
                  Open
                  Open
                  A
                  .409, .440, .908(a)
                  NA

                  Sodium silicate solution
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  NA

                  Sodium sulfide solution (15% or less)
                  B
                  S/P
                  III
                  B/3
                  PV
                  Closed
                  NSR
                  .236(a), (b), .409, .440, .526, .908(b)
                  NA

                  Sodium sulfite solution (25% or less)
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .409, .440, .908(b)
                  NA

                  Sodium tartrates, Sodium succinates solution
                  D
                  S
                  III
                  NR
                  Open
                  Open
                  A, B
                  .238(e)
                  NA

                  Sodium thiocyanate solution (56% or less)
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .238(a), .409
                  NA

                  Styrene monomer

                  B
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A, B
                  .236(b), .409, .912(a)(1), .1002(a), (b), .1004
                  I-D

                  Sulfohydrocarbon, long chain (C18 + ) alkylamine mixture
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A, B
                  .409; (.440, .908(a)) 1

                  NA

                  Sulfur (molten)
                  III
                  S
                  III
                  NR
                  Open
                  Open
                  NSR
                  .252, .440, .526, .545
                  I-C

                  Sulfuric acid
                  C
                  S/P
                  III
                  NR
                  Open
                  Open
                  NSR
                  .440, .554, .555, .556, .602, .908(a), (b), .933, .1000, .1045, .1046, .1052
                  I-B

                  Tall oil (crude and distilled)
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409, .440, .488, .908(a), (b)
                  NA

                  Tall oil, fatty acid (resin acids less than 20%)
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .440, .908(a), (b)
                  NA

                  Tall oil fatty acid, barium salt
                  B
                  S/P
                  III
                  NR
                  Open
                  Open
                  A
                  .409, .440, .908(a)
                  NA

                  Tall oil soap (disproportionated) solution
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409, .440, .908(a), (b)
                  NA

                  1,1,2,2-Tetrachloroethane
                  B
                  S/P
                  III
                  B/3
                  PV
                  Restr
                  NSR
                  .316, .409, .525, .526, .1020
                  NA

                  Tetraethylenepentamine 3

                  D
                  S
                  III
                  NR
                  Open
                  Open
                  A
                  .236(b), (c), (g)
                  I-C

                  Tetrahydrofuran
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A, D
                  .409, .526, .912(a)(2), .1004
                  I-C

                  Tetrahydronaphthalene
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  I-D

                  Tetramethylbenzene (all isomers)
                  A
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  I-D

                  Toluene
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Toluenediamine
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, B, C, D
                  .236(a), (b), (c), (g), .316, .408, .440, .525, .526, .527, .908(a), (b), .933, .1020
                  NA

                  Toluene diisocyanate 6

                  C
                  S/P
                  II
                  4m
                  PV
                  Closed
                  A, C 6, D
                  .236(b), .316, .408, .440, .500, .501, .525, .526, .527, .602, .908(b), .1000, .1020
                  I-D

                  o-Toluidine
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, C
                  .316, .408, .525, .526, .933, .1020
                  I-D

                  Tributyl phosphate
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409
                  I-D

                  1,2,3-Trichlorobenzene (molten)
                  A
                  S/P
                  I
                  B/3
                  PV
                  Closed
                  A, C, D
                  .316, .408, .440, .526, .908(b), .933
                  I-D

                  1,2,4-Trichlorobenzene
                  B
                  S/P
                  II
                  4m
                  PV
                  Restr
                  A, B,C,
                  .409, .440, .526, .908(b),
                  I-D

                  1,1,1-Trichloroethane
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409
                  I-D

                  1,1,2-Trichloroethane
                  C
                  S/P
                  III
                  B/3
                  PV
                  Restr
                  NSR
                  .409, .525, .526, .933, .1020
                  I-D

                  Trichloroethylene
                  C
                  S/P
                  III
                  B/3
                  PV
                  Restr
                  NSR
                  .316, .409, .525, .526, .1020
                  I-D

                  1,2,3-Trichloropropane
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, B, C, D
                  .316, .408, .525, .526, .933, .1020
                  I-D

                  1,1,2-Trichloro-1,2,2-trifluoroethane
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  NSR
                  None
                  NA

                  Tricresyl phosphate (less than 1% of the ortho isomer)
                  A
                  P
                  II
                  NR
                  Open
                  Open
                  A
                  .409
                  I-D

                  Tricresyl phosphate (1% or more of the ortho isomer)
                  A
                  S/P
                  I
                  4m
                  PV
                  Closed
                  A, B
                  .408, .525(a), (c), (d), (e), .1020
                  I-D

                  Tridecanoic acid
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409, .440, .488, .908(a), (b)
                  NA

                  Triethanolamine
                  D
                  S
                  III
                  NR
                  Open
                  Open
                  A
                  .236(a), (b), (c), (g)
                  I-C

                  Triethylamine
                  C
                  S/P
                  II
                  B/3
                  PV
                  Restr
                  A, B, C
                  .236(b), (c), .409, .525, .526, .527, .1020
                  I-C

                  Triethylbenzene
                  A
                  P
                  II
                  NR
                  Open
                  Open
                  A
                  .409
                  I-D

                  Triethylene glycol di-(2-ethylbutyrate)
                  [C]
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  I-C

                  Triethylenetetramine
                  D
                  S
                  III
                  NR
                  Open
                  Open
                  A
                  .236(a), (b), (c)
                  I-C

                  Triethyl phosphite
                  B
                  S/P
                  III
                  B/3
                  PV
                  Restr
                  A, B, D
                  .409, .526
                  NA

                  Triisopropylated phenyl phosphates
                  A
                  P
                  II
                  NR
                  Open
                  Open
                  A
                  .409
                  NA

                  Trimethylacetic acid
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A, C
                  .238(a), .266, .554
                  I-D

                  Trimethylamine solution (30% or less)
                  C
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, C
                  .236(a), (b), (c), (g), .372, .408, .440, .525, .526, .527, .908(b), .1020
                  I-C

                  Trimethylbenzene (all isomers)
                  A
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Trimethylhexamethylenediamine (2,2,4- and 2,4,4- isomers)
                  D
                  S
                  III
                  NR
                  Open
                  Open
                  A, C
                  .236(a), (b), (c), (g), .409
                  NA

                  Trimethylhexamethylene diisocyanate (2,2,4- and 2,4,4- isomers) 6

                  B
                  S/P
                  II
                  B/3
                  PV
                  Closed
                  A, C 6

                  .316, .409, .500, .501, .525, .526, .602, .1000, .1020
                  NA

                  2,2,4-Trimethyl-1,3-pentanediol-1-isobutyrate
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  None
                  I-D

                  Trimethyl phosphite
                  #
                  S
                  III
                  4m
                  PV
                  Restr
                  A, D
                  .409, .526, .602, .1000
                  I-D

                  1,3,5-Trioxane
                  D
                  S
                  III
                  4m
                  PV
                  Restr
                  A, D
                  .409
                  I-C

                  Trixylenyl phosphate
                  A
                  P
                  I
                  NR
                  Open
                  Open
                  A
                  .408
                  NA

                  Trixylyl phosphate, see Trixylenyl phosphate

                  Turpentine
                  B
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  I-D

                  Undecanoic acid
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .440, .908(a), (b)
                  NA

                  1-Undecene
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409
                  I-D

                    1- Undecyl alcohol
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A
                  .409, .440, .908(b)
                  I-D

                  Urea, Ammonium nitrate solution (containing more than 2% NH3)
                  C
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A
                  .236(b), .526
                  I-D

                  Valeraldehyde (all isomers)
                  C
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409, .500, .526
                  I-C

                  Vinyl acetate
                  C
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409, .912(a)(1), .1002(a), (b), .1004
                  I-D

                  Vinyl ethyl ether
                  C
                  S/P
                  II
                  4m
                  PV
                  Closed
                  A
                  .236(b), (d), (f), (g), .252, .372, .408, .440, .500, .515, .526, .527, .912(a)(1), .1002(a), (b), .1004
                  I-C

                  Vinylidene chloride
                  D
                  S
                  II
                  4m
                  PV
                  Restr
                  B
                  .236(a), (b), .372, .409, .440, .500, .526, .527, .912(a)(1), .1002(a), (b), .1004
                  I-D

                  Vinyl neodecanate
                  B
                  S/P
                  III
                  NR
                  Open
                  Open
                  A, B
                  .409, .912(a)(1), .1002(a), (b), .1004
                  NA

                  Vinyltoluene
                  A
                  S/P
                  III
                  4m
                  PV
                  Restr
                  A, B, D
                  .236(a), (b), (c), (g), .409, .912(a)(1), .1002(a), (b), .1004
                  I-D

                  White spirit (low (15-20%) aromatic)
                  B
                  P
                  II
                  4m
                  PV
                  Restr
                  A
                  .409
                  NA

                  Xylenes 8 (ortho-, meta-, para-)
                  C
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409, .440, .908(b) 8

                  I-D

                  Xylenes, Ethylbenzene (10% or more) mixture
                  B
                  P
                  III
                  4m
                  PV
                  Restr
                  A
                  .409
                  NA

                  Xylenol
                  B
                  S/P
                  III
                  NR
                  Open
                  Open
                  A, B
                  .409, .440, .908(a), (b)
                  NA

                  Zinc alkaryl dithiophosphate (C7-C16)
                  C
                  P
                  III
                  NR
                  Open
                  Open
                  A, B
                  (.440, .903, .908(a)) 1

                  NA

                  Zinc alkyl dithiophosphate (C3-C14)
                  B
                  P
                  III
                  NR
                  Open
                  Open
                  A, B
                  .409; (.440, .908(a)) 1

                  NA

                Column Heading Footnotes:

                a. The cargo name must be as it appears in this column (see 153.900, 153.907). Words in italics are not part of the cargo name but may be used in addition to the cargo name. When one entry references another entry by use of the word “see”, and both names are in roman type, either name may be used as the cargo name (e.g., Diethyl ether, see Ethyl ether). However, the referenced entry is preferred.
                The provisions contained in 46 CFR part 197, subpart C, apply to liquid cargoes containing 0.5% or more benzene by volume.
                b. This column lists the IMO Annex II Pollution Category.
                  A, B, C, D—NLS Category of Annex II of MARPOL 73/78.
                  III—Appendix III of Annex II (non-NLS cargoes) of MARPOL 73/78.
                  #—No determination of NLS status. For shipping on an oceangoing vessel, see 46 CFR 153.900(c).
                  [ ]—A NLS category in brackets indicates that the product is provisionally categorized and that further data are necessary to complete the evaluation of its pollution hazards. Until the hazard evaluation is completed, the pollution category assigned is used.
                  @—The NLS category has been assigned by the U.S. Coast Guard, in absence of one assigned by the IMO. The category is based upon a GESAMP Hazard Profile or by analogy to a closely related product having an NLS assigned.
                c. This column lists the hazard(s) of the commodity:
                  S—The commodity is included because of its safety hazards.
                  P—The commodity is included because of its pollution hazards.
                  S/P—The commodity is included because of both its safety and pollution hazards.
                d. This column lists the type of containment system the cargo must have (see 153.230 through 153.232).
                e. This column lists the height of any vent riser required (see 153.350 and 153.351).
                f. This column lists any vent control valve required (see 153.355).

                g. This column lists the type of gauging system required (see 153.400 through 153.406).

                h. This column lists the type of fire protection system required. Where more than one system is listed, any listed system may be used. A dry chemical system may not be substituted for either type of foam system unless the dry chemical system is listed as an alternative or the substitution is approved by Commandant (CG-ENG) (telephone number 202-372-1420) (see 153.460). The types are as follows:
                  A is a foam system for water soluble cargoes (polar solvent foam).
                  B is a foam system for water insoluble cargoes (non-polar solvent foam).
                  C is a water spray system.
                  D is a dry chemical system.
                  NSR means there is no special requirement applying to fire protection systems.
                i. This column lists sections that apply to the cargo in addition to the general requirements of this part. The 153 Part number is omitted.
                j. This column lists the electrical hazard class and group used for the cargo when determining requirements for electrical equipment under Subchapter J (Electrical Engineering) of this chapter.
                A number of electrical hazard class and group assignments are based upon that which appears in “Classification of Gases, Liquids and Volatile Solids Relative to Explosion-Proof Electrical Equipment”, Publication NMAB 353-5, National Academy Press, 1982, when not appearing in NFPA 497M, “Manual for Classification of Gases, Vapors and Dusts for Electrical Equipment in Hazardous (Classified) Locations.”
                The I-B electrical hazard does not apply to weather deck locations (see 46 CFR Part 111) for inorganic acids: Chlorosulfonic acid; Hydrochloric acid; Nitrating acid; Nitric acid (70% or less); Oleum; Phosphoric acid; Sulfuric acid.
                Abbreviations used in the Table:
                  NR—No requirement.
                  NA—Not applicable.
                Abbreviations for Noxious Liquid cargoes:
                  N.F.—non-flammable (flash point greater than 60 deg C (140 deg F) closed cup (cc)).
                  F.—flammable (flash point less than or equal to 60 deg C (140 deg F) closed cup (cc)).
                  n.o.s.—not otherwise specified.
                  ST—Ship type.
                  Cat—Pollution category.
                Footnotes for Specific Cargoes:
                1. Special applicability:
                  153.440 and .908(a) apply to the chemical, and mixtures containing the chemical, with a viscosity of 25 mPa.s at 20 deg C (68 deg F).
                  153.440 and .908(b) apply to the chemical, and mixtures containing the chemical, with a melting point of 0 deg C (32 deg F) and above.
                  153.488 applies to the chemical, and mixtures containing the chemical, with a melting point of 15 deg C (59 deg F) and above.
                2. Benzene containing cargoes.
                  Applies to mixtures containing no other components with safety hazards and where the pollution category is C or less.
                3. Diammonium salt of Zinc ethylenediaminetetraacetic acid solution; Tetraethylenepentamine.
                  Aluminum is a questionable material of construction with this cargo since pitting and corrosion has been reported. The IMO Chemical Code prohibits aluminum as a material of construction for this cargo.
                4. 2,4-Dichlorophenol.
                  Some tank pitting has been reported when this cargo is contaminated with water, including moisture in the air. The IMO Chemical Code requires that the vapor space over this cargo be kept dry.
                5. Reserved.
                6. Diphenylmethane diisocyanate; Hexamethylene diisocyanate; Isophorone diisocyanate; Polymethylene polyphenyl isocyanate; Toluene diisocyanate; Trimethylhexamethylene diisocyanate (2,2,4- and 2,4,4- isomers).
                  Water is effective in extinguishing open air fires but will generate hazardous quantities of gas if put on the cargo in enclosed spaces.
                7. Maleic anhydride; Nitroethane; Nitroethane, 1-Nitropropane mixtures; 1- or 2-Nitropropane; Nitropropane, Nitroethane mixtures.
                  Dry chemical extinguishers should not be used on fires involving these cargoes since some dry chemicals may react with the cargo and cause an explosion.
                8. Xylenes.
                  Special requirement .908(b) only applies to the para- (p-) isomer, and mixtures containing the para-isomer having a melting point of 0 deg C (32 deg F) or more.

              [USCG-2000-7079, 65 FR 67196, Nov. 8, 2000, as amended by USCG-2012-0832, 77 FR 59785, Oct. 1, 2012]

              Pt. 153, Table 2
              Table 2 to Part 153—Cargoes Not Regulated Under Subchapters D or O of This Chapter When Carried in Bulk on Non-Oceangoing Barges

                The cargoes listed in this table are not regulated under subchapter D or O of this title when carried in bulk on non-oceangoing barges. Category X, Y, or Z noxious liquid substance (NLS) cargo, as defined in Annex II of MARPOL 73/78, listed in this table, or any mixture containing one or more of these cargoes, must be carried under this subchapter if carried in bulk on an oceangoing ship.

                  Cargoes
                  Pollutioncategory

                    Acrylic acid/ethenesulfonic (alternately ethenesulphonic) acid copolymer with phosphonate groups, sodium salt solution

                    Z

                  Aluminum sulfate (alternately Aluminium sulphate) solution
                  Y

                  2-Amino-2-hydroxymethyl-1,3-propanediol solution
                  #

                  Ammonium hydrogen phosphate solution
                  Z

                  Ammonium lignosulfonate (alternately lignosulphonate) solutions, see also Lignin liquor
                  Z

                  Ammonium nitrate solution (45% or less)
                  #

                  Ammonium phosphate, urea solution, see also Urea/Ammonium phosphate solution
                  #

                  Ammonium polyphosphate solution
                  Z

                  Ammonium sulfate (alternately sulphate) solution
                  Z

                  Ammonium thiosulfate (alternately thiosulphate) solution (60% or less)
                  Z

                  Apple juice
                  OS

                  Calcium bromide solution
                  Z

                  Calcium carbonate slurry
                  OS

                  Calcium chloride solution
                  Z

                  Calcium hydroxide slurry
                  Z

                  Calcium lignosulfonate (alternately lignosulphonate) solution, see also Lignin liquor
                  Z

                    Calcium nitrate solutions (50% or less)

                    Z

                  Calcium nitrate/Magnesium nitrate/Potassium chloride solution
                  Z

                  Caramel solutions
                  #

                    Chlorinated paraffins (C14-C17) (with 50% Chlorine or more, and less than 1% C13 or shorter chains)

                    X

                  Chlorinated paraffins (C14-C17) (with 52% Chlorine)
                  #

                  2-Chloro-4-ethylamino-6-isopropylamino-5-triazine solution
                  #

                  4-Chloro-2-methylphenoxyacetic acid, dimethylamine salt solution
                  Y

                  Choline chloride solutions
                  Z

                  Clay slurry
                  OS

                  Coal slurry
                  OS

                    Dextrose solution, see Glucose solution.

                  Diethylenetriaminepentaacetic acid, pentasodium salt solution
                  Z

                  1,4-Dihydro-9,10-dihydroxy anthracene, disodium salt solution
                  #

                  Dodecenylsuccinic acid, dipotassium salt solution
                  #

                  Drilling brine (containing Calcium, Potassium, or Sodium salts) (see also Potassium chloride solution (10% or more))
                  #

                  Drilling brines, including: Calcium bromide solution, Calcium chloride solution and Sodium chloride solution (if non-flammable and non-combustible)
                  Z

                  Drilling brines (containing Zinc salts)
                  X

                  Drilling mud (low toxicity) (if non-flammable and non-combustible)
                  #

                  Ethylene-Vinyl acetate copolymer (emulsion)
                  Y

                  Ferric hydroxyethylethylenediamine triacetic acid, trisodium salt solution
                  #

                  Fish solubles (water-based fish meal extracts)
                  #

                  Fructose solution
                  #

                  Glucose solution
                  OS

                  Glycine, Sodium salt solution
                  Z

                  Glyphosate solution (not containing surfactant)
                  Y

                  Hexamethylenediamine adipate solution
                  #

                  Hexamethylenediamine adipate (50% in water)
                  Z

                  N-(Hydroxyethyl)ethylenediamine triacetic acid, trisodium salt solution
                  Y

                  Kaolin clay solution
                  #

                  Kaolin slurry
                  OS

                  Kraft pulping liquor (free alkali content, 1% or less) including: Black, Green, or White liquor

                  #

                  Lignin liquor (free alkali content, 1% or less)
                  Z

                    including:

                  Ammonium lignosulfonate (alternately lignosulphonate) solution
                  Z

                  Calcium lignosulfonate (alternately lignosulphonate) solution
                  Z

                  Sodium lignosulfonate (alternately lignosulphonate) solution
                  Z

                  Ligninsulfonic (alternately ligninsulphonic) acid, Sodium salt solution
                  Z

                  Magnesium chloride solution
                  Z

                  Magnesium hydroxide slurry
                  Z

                  Magnesium sulfonate (alternately sulphonate) solution
                  #

                    Maltitol solution

                    OS

                    Microsilica slurry

                    OS

                  Milk
                  #

                  Molasses
                  OS

                  Molasses residue (from fermentation)
                  #

                  Naphthalenesulfonic (alternately Naphthalenesulphonic) acid-Formaldehyde copolymer, sodium salt solution
                  Z

                  Naphthenic acid, sodium salt solution
                  #

                    Nitrilotriacetic acid, trisodium salt solution

                    Y

                  Noxious liquid, NF, (1) n.o.s. (“trade name” contains “principal components”) ST 1, Cat X (if non-flammable and non-combustible)
                  X

                  Noxious liquid, NF, (3) n.o.s. (“trade name” contains “principal components”) ST 2, Cat X (if non-flammable and non-combustible)
                  X

                  Noxious liquid, NF, (5) n.o.s. (“trade name” contains “principal components”) ST 2, Cat Y (if non-flammable and non-combustible)
                  Y

                  Noxious liquid, NF, (7) n.o.s. (“trade name” contains “principal components”) ST 3, Cat Y (if non-flammable and non-combustible)
                  Y

                  Noxious liquid, NF, (9) n.o.s. (“trade name” contains “principal components”) ST 3, Cat Z (if non-flammable and non-combustible)
                  Z

                  Noxious liquid, NF, (11) n.o.s. (“trade name” contains “principal components”) Cat Z (if non-flammable and non-combustible)
                  Z

                  Noxious liquid, NF, (12) n.o.s. (“trade name” contains “principal components”) Cat OS (if non-flammable and non-combustible)
                  OS

                    Orange juice (concentrated)

                    OS

                    Orange juice (not concentrated)

                    OS

                    Pentasodium salt of Diethylenetriaminepentaacetic acid solution, see Diethylenetriaminepentaacetic acid, pentasodium salt solution.

                  Polyaluminum (alternately Polyaluminium) chloride solution
                  Z

                    Potassium chloride solution (26% or more), see Drilling brines, including: Calcium bromide solution, Calcium chloride solution, and Sodium chloride solution.

                    Potassium chloride solution (less than 26%)

                    OS

                  Potassium formate solutions
                  Z

                    Potassium thiosulfate (alternately thiosulphate) (50% or less)

                    Y

                  Sewage sludge, treated (treated so as to pose no additional decompositional and fire hazard; stable, non-corrosive, non-toxic, non-flammable)

                  #

                  Silica slurry
                  #

                  Sludge, treated (treated so as to pose no additional decompositional and fire hazard; stable, non-corrosive, non-toxic, non-flammable)

                  #

                  Sodium acetate, Glycol, Water mixture (containing 1% or less Sodium hydroxide) (if non-flammable or non-combustible)
                  #

                  Sodium acetate solutions
                  Z

                  Sodium alkyl (C14-C17) sulfonates (alternately sulphonates) (60-65% solution)
                  Y

                  Sodium aluminosilicate slurry
                  Z

                    Sodium bicarbonate solution (less than 10%)

                    OS

                  Sodium carbonate solution
                  Z

                    Sodium hydrogen sulfide (alternately sulphide) (6% or less)/Sodium carbonate (3% or less) solution

                    Z

                  Sodium lignosulfonate (alternately lignosulphonate) solution, see also Lignin liquor
                  Z

                    Sodium naphthenate solution (free alkali content 3% or less), see Naphthenic acid, sodium salt solution.

                  Sodium poly(4+)acrylate solutions
                  Z

                  Sodium silicate solution
                  Y

                  Sodium sulfate (alternately sulphate) solutions
                  Z

                    Sodium sulfite (alternately sulphite) solution (25% or less)

                    Y

                    Sodium thiocyanate solution (56% or less)

                    Y

                  Sorbitol solution
                  OS

                  Sulfonated (alternately Sulphonated) polyacrylate solution
                  Z

                    Tetrasodium salt of Ethylenediaminetetraaacetic acid solution, see Ethylenediaminetetraacetic acid, tetrasodium salt solution.

                  Titanium dioxide slurry
                  Z

                  1,1,1-Trichloroethane
                  Y

                  1,1,2-Trichloro-1,2,2-trifluoroethane
                  Y

                    Trisodium salt of N-(Hydroxyethyl)ethylenediaminetriacetic acid solution, see N-(Hydroxyethyl)ethylenediaminetriacetic acid, trisodium salt solution.

                  Urea, Ammonium mono- and di-hydrogen phosphate, Potassium chloride solution
                  #

                  Urea/Ammonium nitrate solution *
                  Z

                  Urea/Ammonium phosphate solution
                  Z

                  Urea solution
                  Z

                  Vanillin black liquor (free alkali content, 1% or less)
                  #

                  Vegetable protein solution (hydrolyzed) (if non-flammable and non-combustible)
                  OS

                  Water
                  OS

                    Zinc bromide, Calcium bromide solution, see Drilling brines (containing Zinc salts).

                  Explanation of symbols and abbreviations used in this table:

                “#” = No determination of noxious liquid substance status. For shipping on an oceangoing vessel, see 46 CFR 153.900(c).

                  Bolded entries were added from the March 2012 Annex to the 2007 edition of the IBC Code (MEPC 63/23/Add.1), the December 2012 IMO Marine Environmental Protection Committee Circular (MEPC.2/Circ.18), or the December 2013 IMO Marine Environmental Protection Committee Circular (MEPC.2/Circ.19).
                “Cat” = Pollution category.
                “NF” = Non-flammable (flash point greater than 60 °C (140 °F) closed cup).
                “n.o.s.” = Not otherwise specified.

                “OS” = Other substances, at present considered to present no harm to marine resources, human health, amenities, or other legitimate uses of the sea when discharged into the sea from tank cleaning or deballasting operations.

                “see” = A redirection to the preferred, alternative cargo name-for example, in “Tetrasodium salt of Ethylenediaminetetraaacetic acid solution, see Ethylenediaminetetraacetic acid, tetrasodium salt solution,” the pollution category for “Tetrasodium salt of Ethylenediaminetetraaacetic acid solution” will be found under the preferred, alternative cargo name “Ethylenediaminetetraacetic acid, tetrasodium salt solution.”
                “ST” = Ship type, as defined in Chapter 2 of the IBC Code.
                “X, Y, Z” = Noxious liquid substance category of Annex II of MARPOL 73/78.

              [78 FR 50208, Aug. 16, 2013, as amended at USCG-2013-0423, 85 FR 21728, Apr. 17, 2020]

              Appendix I to Part 153 [Reserved]

              Pt. 153, App. II
              Appendix II to Part 153—Metric Units Used in Part 153

                  Parameter
                  Metric (SI unit)
                  Abbreviation
                  Equivalent to English or common metric

                  Force
                  Newton
                  N
                  0.225 lbs.

                  Length
                  Meter
                  m
                  39.37 in.

                  Centimeter
                  cm
                  .3937 in.

                  Pressure
                  Pascal
                  Pa
                  1.450 × 10−4 lbs/in 2.

                  Kilo-Pascal (1,000 Pascals)
                  kPa
                  0.145 lbs/in 2.

                  Kilo-Pascal
                  kPa
                  1.02 × 10−2 kg/cm2.

                  ......do
                  kPa
                  1 × 10 3 N/m 2.

                  Temperature
                  Degree Celsius
                  °C
                  5/9 (°F-32).

                  Viscosity
                  milli-Pascal second
                  mPa. sec
                  1.0 centipoise.

                  Volume
                  Cubic meter
                  m 3

                  264 gallons (gal).

                  ......do
                  m 3

                  35.3 ft. 3

              [CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 21212, May 17, 1982; CGD 81-101, 52 FR 7799, Mar. 12, 1987. Redesignated by CGD 92-100, 59 FR 17045, Apr. 11, 1994]

          Pt. 154
          PART 154—SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES

              Subpart A—General
              Sec.
              154.1
              Incorporation by reference.
              154.3
              Purpose.
              154.5
              Applicability.
              154.7
              Definitions, acronyms, and terms.
              154.9
              Issuance of documents.
              154.12
              Existing gas vessel: Endorsements and requirements.
              154.15
              U.S. flag vessel: Endorsement application.
              154.17
              U.S. flag vessel: Certificate of Inspection endorsement.
              154.19
              U.S. flag vessel: IMO certificate issuance.
              154.22
              Foreign flag vessel: Certificate of Compliance endorsement application.
              154.24
              Foreign flag vessel: IMO Certificate.
              154.30
              [Reserved]
              154.32
              Equivalents.
              154.34
              Special approval: Requests.
              154.36
              Correspondence and vessel information: Submission.
              154.40
              Right of appeal.

              Subpart B—Inspections and Tests

                Examination Requirements for Foreign Flag Vessels
                154.150
                Examination required for a Certificate of Compliance.
                154.151
                Procedures for having the Coast Guard examine a vessel for a Certificate of Compliance.

              Subpart C—Design, Construction, and Equipment

                Hull Structure
                154.170
                Outer hull steel plating.
                154.172
                Contiguous steel hull structure.
                154.174
                Transverse contiguous hull structure.
                154.176
                Longitudinal contiguous hull structure.
                154.178
                Contiguous hull structure: Heating system.
                154.180
                Contiguous hull structure: Welding procedure.
                154.182
                Contiguous hull structure: Production weld test.
                154.188
                Membrane tank: Inner hull steel.
                154.195
                Aluminum cargo tank: Steel enclosure.

                Ship Survival Capability and Cargo Tank Location
                154.200
                Stability requirements: General.
                154.235
                Cargo tank location.

                Ship Arrangements
                154.300
                Segregation of hold spaces from other spaces.
                154.305
                Segregation of hold spaces from the sea.
                154.310
                Cargo piping systems.
                154.315
                Cargo pump and cargo compressor rooms.
                154.320
                Cargo control stations.
                154.325
                Accommodation, service, and control spaces.
                154.330
                Openings to accommodation, service, or control spaces.
                154.340
                Access to tanks and spaces in the cargo area.
                154.345
                Air locks.
                154.350
                Bilge and ballast systems in the cargo area.
                154.355
                Bow and stern loading piping.
                154.356
                Cargo emergency jettisoning piping.

                Cargo Containment Systems
                154.401
                Definitions.
                154.405
                Design vapor pressure (Po) of a cargo tank.
                154.406
                Design loads for cargo tanks and fixtures: General.
                154.407
                Cargo tank internal pressure head.
                154.408
                Cargo tank external pressure load.
                154.409
                Dynamic loads from vessel motion.
                154.410
                Cargo tank sloshing loads.
                154.411
                Cargo tank thermal loads.
                154.412
                Cargo tank corrosion allowance.

                Integral Tanks
                154.418
                General.
                154.419
                Design vapor pressure.
                154.420
                Tank design.
                154.421
                Allowable stress.

                Membrane Tanks
                154.425
                General.
                154.426
                Design vapor pressure.
                154.427
                Membrane tank system design.
                154.428
                Allowable stress.
                154.429
                Calculations.
                154.430
                Material test.
                154.431
                Model test.
                154.432
                Expansion and contraction.

                Semi-Membrane Tanks
                154.435
                General.
                154.436
                Design vapor pressure.

                Independent Tank Type A
                154.437
                General.
                154.438
                Design vapor pressure.
                154.439
                Tank design.
                154.440
                Allowable stress.

                Independent Tank Type B
                154.444
                General.
                154.445
                Design vapor pressure.
                154.446
                Tank design.
                154.447
                Allowable stress.
                154.448
                Calculations.
                154.449
                Model test.

                Independent Tank Type C and Process Pressure Vessels
                154.450
                General.
                154.451
                Design vapor pressure.
                154.452
                External pressure.
                154.453
                Failure to meet independent tank type C standards.

                Secondary Barrier
                154.459
                General.
                154.460
                Design criteria.

                Insulation
                154.465
                General.
                154.466
                Design criteria.
                154.467
                Submission of insulation information.

                Support System
                154.470
                General.
                154.471
                Design criteria.
                154.476
                Cargo transfer devices and means.

                Cargo and Process Piping Systems
                154.500
                Cargo and process piping standards.
                154.503
                Piping and piping system components: Protection from movement.
                154.506
                Mechanical expansion joint: Limits in a piping system.
                154.512
                Piping: Thermal isolation.
                154.514
                Piping: Electrical bonding.
                154.516
                Piping: Hull protection.
                154.517
                Piping: Liquid pressure relief.
                154.519
                Piping relief valves.
                154.520
                Piping calculations.
                154.522
                Materials for piping.
                154.524
                Piping joints: Welded and screwed couplings.
                154.526
                Piping joints: Flange connection.
                154.528
                Piping joints: Flange type.
                154.530
                Valves: Cargo tank MARVS 69 kPa gauge (10 psig) or lower.
                154.532
                Valves: Cargo tank MARVS greater than 69 kPa gauge (10 psig).
                154.534
                Cargo pumps and cargo compressors.
                154.536
                Cargo tank gauging and measuring connections.
                154.538
                Cargo transfer connection.
                154.540
                Quick-closing shut-off valves: Emergency shut-down system.
                154.544
                Quick-closing shut-off valves.
                154.546
                Excess flow valve: Closing flow.
                154.548
                Cargo piping: Flow capacity.
                154.550
                Excess flow valve: Bypass.

                Cargo Hose
                154.551
                Cargo hose: General.

                154.552
                Cargo hose: Compatibility.
                154.554
                Cargo hose: Bursting pressure.
                154.556
                Cargo hose: Maximum working pressure.
                154.558
                Cargo hose: Marking.
                154.560
                Cargo hose: Prototype test.
                154.562
                Cargo hose: Hydrostatic test.

                Materials
                154.605
                Toughness test.
                154.610
                Design temperature not colder than 0 °C (32 °F).
                154.615
                Design temperature below 0 °C (32 °F) and down to −55 °C (−67 °F).
                154.620
                Design temperature below −55 °C (−67 °F) and down to −165 °C (−265 °F).
                154.625
                Design temperature below 0 °C (32 °F) and down to −165 °C (−265 °F).
                154.630
                Cargo tank material.

                Construction
                154.650
                Cargo tank and process pressure vessel welding.
                154.655
                Stress relief for independent tanks type C.
                154.660
                Pipe welding.
                154.665
                Welding procedures.

                Cargo Pressure and Temperature Control
                154.701
                Cargo pressure and temperature control: General.
                154.702
                Refrigerated carriage.
                154.703
                Methane (LNG).
                154.705
                Cargo boil-off as fuel: General.
                154.706
                Cargo boil-off as fuel: Fuel lines.
                154.707
                Cargo boil-off as fuel: Ventilation.
                154.708
                Cargo boil-off as fuel: Valves.
                154.709
                Cargo boil-off as fuel: Gas detection equipment.

                Cargo Vent Systems
                154.801
                Pressure relief systems.
                154.802
                Alternate pressure relief settings.
                154.804
                Vacuum protection.
                154.805
                Vent masts.
                154.806
                Capacity of pressure relief valves.

                Atmospheric Control in Cargo Containment Systems
                154.901
                Atmospheric control within cargo tanks and cargo piping systems.
                154.902
                Atmospheric control within hold and interbarrier spaces.
                154.903
                Inert gas systems: General.
                154.904
                Inert gas system: Controls.
                154.906
                Inert gas generators.
                154.908
                Inert gas generator: Location.
                154.910
                Inert gas piping: Location.
                154.912
                Inerted spaces: Relief devices.

                Electrical
                154.1000
                Applicability.
                154.1002
                Definition.
                154.1005
                Equipment approval.
                154.1010
                Electrical equipment in gas-dangerous space or zone.
                154.1015
                Lighting in gas-dangerous space.
                154.1020
                Emergency power.

                Firefighting
                Firefighting System: Exterior Water Spray
                154.1105
                Exterior water spray system: General.
                154.1110
                Areas protected by system.
                154.1115
                Discharge.
                154.1120
                Nozzles.
                154.1125
                Pipes, fittings, and valves.
                154.1130
                Sections.
                154.1135
                Pumps.
                Firefighting System: Dry Chemical
                154.1140
                Dry chemical system: General.
                154.1145
                Dry chemical supply.
                154.1150
                Distribution of dry chemical.
                154.1155
                Hand hose line: Coverage.
                154.1160
                Monitor coverage of system.
                154.1165
                Controls.
                154.1170
                Hand hose line: General.

                Cargo Area: Mechanical Ventilation System
                154.1200
                Mechanical ventilation system: General.
                154.1205
                Mechanical ventilations system: Standards.
                154.1210
                Hold space, void space, cofferdam, and spaces containing cargo piping.

                Instrumentation
                154.1300
                Liquid level gauging system: General.
                154.1305
                Liquid level gauging system: Standards.
                154.1310
                Closed gauge shut-off valve.
                154.1315
                Restricted gauge excess flow valve.
                154.1320
                Sighting ports, tubular gauge glasses, and flat plate type gauge glasses.
                154.1325
                Liquid level alarm system: All cargo tanks.
                154.1330
                Liquid level alarm system: Independent tank type C.
                154.1335
                Pressure and vacuum protection.
                154.1340
                Temperature measuring devices.
                154.1345
                Gas detection.
                154.1350
                Flammable gas detection system.
                154.1360
                Oxygen analyzer.
                154.1365
                Audible and visual alarms.
                154.1370
                Pressure gauge and vacuum gauge marking.
                154.1375
                Readout for temperature measuring device: Marking.

                Safety Equipment
                154.1400
                Safety equipment: All vessels.
                154.1405
                Respiratory protection.
                154.1410
                Decontamination shower.
                154.1415
                Air compressor.
                154.1420
                Stretchers and equipment.
                154.1430
                Equipment locker.
                154.1435
                Medical first aid guide.
                154.1440
                Antidotes.

              Subpart D—Special Design and Operating Requirements
              154.1700
              Purpose.
              154.1702
              Materials of construction.
              154.1705
              Independent tank type C.
              154.1710
              Exclusion of air from cargo tank vapor spaces.
              154.1715
              Moisture control.
              154.1720
              Indirect refrigeration.
              154.1725
              Ethylene oxide.
              154.1730
              Ethylene oxide: Loading and off-loading.
              154.1735
              Methyl acetylene-propadiene mixture.
              154.1740
              Vinyl chloride: Inhibiting and inerting.
              154.1745
              Vinyl chloride: Transferring operations.
              154.1750
              Butadiene or vinyl chloride: Refrigeration system.
              154.1755
              Nitrogen.
              154.1760
              Liquid ammonia.

              Subpart E—Operations
              154.1800
              Special operating requirements under Part 35 of this chapter.
              154.1801
              Certificates, letters, and endorsements: U.S. flag vessels.
              154.1802
              Certificates, letters, and endorsements: Foreign flag vessels.
              154.1803
              Expiration of Certificates of Compliance.
              154.1804
              Document posted in wheelhouse.
              154.1806
              Regulations on board.
              154.1808
              Limitations in the endorsement.
              154.1809
              Loading and stability manual.
              154.1810
              Cargo manual.
              154.1812
              Operational information for terminal personnel.
              154.1814
              Cargo information cards.
              154.1816
              Cargo location plan.
              154.1818
              Certification of inhibition.
              154.1820
              Shipping document.
              154.1822
              Shipping document: Copy for transfer terminal.
              154.1824
              Obstruction of pumproom ladderways.
              154.1826
              Opening of cargo tanks and cargo sampling.
              154.1828
              Spaces containing cargo vapor: Entry.
              154.1830
              Warning sign.
              154.1831
              Persons in charge of transferring liquid cargo in bulk or preparing cargo tanks.
              154.1834
              Cargo transfer piping.
              154.1836
              Vapor venting as a means of cargo tank pressure and temperature control.
              154.1838
              Discharge by gas pressurization.
              154.1840
              Protective clothing.
              154.1842
              Cargo system: Controls and alarms.
              154.1844
              Cargo tanks: Filling limits.
              154.1846
              Relief valves: Changing set pressure.
              154.1848
              Inerting.
              154.1850
              Entering cargo handling spaces.
              154.1852
              Air breathing equipment.
              154.1854
              Methane (LNG) as fuel.
              154.1858
              Cargo hose.
              154.1860
              Integral tanks: Cargo colder than −10 °C (14 °F).
              154.1862
              Posting of speed reduction.
              154.1864
              Vessel speed within speed reduction.
              154.1866
              Cargo hose connection: Transferring cargo.
              154.1868
              Portable blowers in personnel access openings.
              154.1870
              Bow and stern loading.
              154.1872
              Cargo emergency jettisoning.
              Appendix A to Part 154—Equivalent Stress
              Appendix B to Part 154—Stress Analyses Definitions

            Authority:
            46 U.S.C. 3703, 9101; Department of Homeland Security Delegation No. 0170.1.

            Source:
            CGD 74-289, 44 FR 26009, May 3, 1979, unless otherwise noted.

            Editorial Note:
            Nomenclature changes to part 154 appear part 154 appear by CGD-95-072, 60 FR 50466, Sept. 29, 1995, CGD-96-041, 61 FR 50732, Sept. 27, 1996, USCG-2009-0702, 74 FR 49235, Sept. 25, 2009, and USCG-2012-0832, 77 FR 59785, Oct. 1, 2012.

            Subpart A—General

              Source:
              CGD 77-069, 52 FR 31626, Aug. 21, 1987, unless otherwise noted.

              § 154.1
              Incorporation by reference.

              (a) Certain materials are incorporated by reference into this part with approval of the Director of the Federal Register in accordance with 5 U.S.C. 552(a). The Office of the Federal Register publishes a list “Material Approved for Incorporation by Reference,” which appears in the Finding Aids section of this volume. To enforce any edition other than the one listed in paragraph (b) of this section, notice of change must be published in the Federal Register and the material made available. All approved material is on file at the Coast Guard Headquarters. Contact Commandant (CG-ENG), Attn: Office of Design and Engineering Systems, U.S. Coast Guard Stop 7509, 2703 Martin Luther King Jr. Avenue SE., Washington, DC 20593-7509; or contact the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.

              (b) The materials approved for incorporation by reference in this part are:

                American Bureau of Shipping (ABS)
                ABS Plaza, 16855 Northchase Drive, Houston, TX 77060
                Rules for Building and Classing Steel Vessels, 1981
                American National Standards Institute
                11 West 42nd Street, New York, NY 10036
                ANSI Z89.1-69 Safety Requirements for Industrial Head Protection, 1969
                ANSI Z87.1-79 Practice for Occupational and Educational Eye and Face Protection, 1979
                American Society for Testing and Materials (ASTM)
                100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.
                ASTM A 20/A 20M-97a, Standard Specification for General Requirements for Steel Plates for Pressure Vessels—154.610
                ASTM F 1014-92, Standard Specification for Flashlights on Vessels—154.1400

                  Note:
                  All other documents referenced in this part are still in effect.

                International Maritime Organization
                Publications Section, 4 Albert Embankment, London SE1 7SR, United Kingdom
                Resolution A.328(IX), Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk, 1976
                Code For Existing Ships Carrying Liquefied Gases in Bulk, 1976
                Medical First Aid Guide for Use in Accidents Involving Dangerous Goods
                Underwriters Laboratories, Inc.
                12 Laboratory Drive, Research Triangle Park, NC 27709-3995
                UL No. 783-79 Standard for Safety, Electric Flashlights for Use in Hazardous Locations, Class 1, Groups C and D, 1979.

              [CGD 77-069, 52 FR 31626, Aug. 21, 1987, as amended by CGD 82-042, 53 FR 17705, May 18, 1988; CGD 82-042, 53 FR 18949, May 25, 1988; CGD 88-070, 53 FR 34535, Sept. 7, 1988; CGD 96-041, 61 FR 50732, Sept. 27, 1996; CGD 97-057, 62 FR 51048, Sept. 30, 1997; USCG-1999-5151, 64 FR 67183, Dec. 1, 1999; USCG-2000-7790, 65 FR 58463, Sept. 29, 2000; 69 FR 18803, Apr. 9, 2004; USCG-2013-0671, 78 FR 60155, Sept. 30, 2013]

              § 154.3
              Purpose.
              The purpose of this part is to prescribe rules for new and existing gas vessels.

              § 154.5
              Applicability.
              This part applies to each self-propelled vessel that has on board bulk liquefied gases as cargo, cargo residue or vapor, except subpart C does not apply if the vessel meets § 154.12 (b), (c), or (d).

              § 154.7
              Definitions, acronyms, and terms.
              As used in this part:

                “A” Class Division means a division as defined in Regulation 3 of Chapter II-2 of the 1974 Safety Convention.

                Accommodation spaces means public spaces, corridors, lavatories, cabins, offices, hospitals, cinemas, game and hobby rooms, pantries containing no cooking appliances, and spaces used in a similar fashion.

                Boiling point means the temperature at which a substance's vapor pressure is equal to the atmospheric barometric pressure.

                Breadth (B) means the maximum width of the vessel in meters measured amidships to the molded line of the frame in a ship with a metal shell and to the outer surface of the hull in a ship with a shell of any other material.

                Cargo area means that part of the vessel that contains the cargo containment system, cargo pump rooms, cargo compressor rooms, and the deck areas over the full beam and the length of the vessel above them, but does not include the cofferdams, ballast spaces, or void spaces at the after end of the aftermost hold space or the forward end of the forwardmost hold space.

                Cargo containment system means the arrangement for containment of the cargo including a primary and secondary barrier, associated insulation and any intervening spaces, and adjacent structure that is necessary for the support of these elements.

                Cargo service space means space within the cargo area that is more than 2 m2 (21.5 ft.2) in deck area and used for work shops, lockers, or store rooms.

                Cargo tank means the liquid tight shell that is the primary container of the cargo.

                Certificate of Compliance means a certificate issued by the Coast Guard to a foreign flag vessel after it is examined and found to comply with regulations in this chapter.

                Cofferdam means the isolating space between two adjacent steel bulkheads or decks, which could be a void space or a ballast space.

                Contiguous hull structure includes the inner deck, the inner bottom plating, longitudinal bulkhead plating, transverse bulkhead plating, floors, webs, stringers, and attached stiffeners.

                Control space means those spaces in which the vessel's radio, main navigating equipment, or the emergency source of power is located or in which the fire control equipment, other than firefighting control equipment under § 154.1140 to § 154.1170, is centralized.

                Design temperature means the minimum cargo temperature the Coast Guard allows for loading, unloading, or carriage.

                Design vapor pressure (Po) means the maximum gauge pressure at the top of the cargo tank for the design of the cargo tank.

                Document means a Certificate of Inspection for a U.S. flag vessel or a Certificate of Compliance for a foreign flag vessel.

                Existing gas vessel means a self-propelled vessel that—
              (a) Is delivered on or before October 31, 1976; or
              (b) Is delivered between October 31, 1976 and June 30, 1980, and is not a new gas vessel.

                Flammable cargoes includes the following liquefied gases from Table 4 (follows § 154.1872):

                Acetaldehyde
                Butadiene
                Butane
                Butylene
                Dimethylamine
                Ethane
                Ethylamine
                Ethyl chloride
                Ethylene
                Ethylene oxide
                Methane (LNG)
                Methyl acetylene-propadiene mixture
                Methyl bromide
                Methyl chloride
                Propane
                Propylene
                Vinyl chloride

                Gas-dangerous space includes the following spaces:
              (a) A space in the cargo area without arrangements to provide a safe atmosphere at all times.
              (b) An enclosed space outside the cargo area through which any piping that may contain liquid or gaseous cargo passes, or within which that piping terminates, without arrangements to prevent gas from escaping into the space.
              (c) A cargo containment system and cargo piping.
              (d) A hold space where cargo is carried in a cargo containment system:
              (1) With a secondary barrier; or
              (2) Without a secondary barrier.
              (e) A space separated from a hold space under paragraph (d)(1) of this definition by a single gastight boundary.
              (f) A cargo pumproom and a cargo compressor room.
              (g) A zone on the weather deck or a semi-enclosed space on the weather deck within 3.05 m (10 ft) of any cargo tank outlet, gas or vapor outlet, cargo pipe flange, cargo valve, or of entrances and ventilation openings to a cargo pump room or a cargo compressor room.
              (h) Except for existing gas vessels, the weather deck over the cargo area and 3.05 m (10 ft) forward and aft of the cargo area on the weather deck to 2.4 m (8 ft) above the weather deck.
              (i) A zone within 2.4 m (8 ft) of the outer surface of a cargo containment system where the surface is exposed to the weather.
              (j) An enclosed or semi-enclosed space in which there is piping containing cargo, except those—
              (1) With gas sampling lines for gas detection equipment under § 154.1350(n); or
              (2) In which boil-off gas is used as fuel under § 154.703.
              (k) A space for storage of cargo hoses.
              (l) An enclosed or semi-enclosed space having an opening into any gas-dangerous space or zone.

                Gas-safe space means a space that is not a gas-dangerous space.

                Hold space means the space enclosed by the vessel's structure in which there is a cargo containment system.

                IMO stands for the lnternational Maritime Organization.

                IMO Certificate means a Certificate of Fitness for the Carriage of Liquefied Gases in Bulk issued under the IMO—

              (a) “Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk”, adopted November 12, 1975 by Assembly Resolution A.328(IX), as amended;
              (b) “Code for Existing Ships Carrying Liquefied Gases in Bulk”, adopted November 12, 1975, as amended; or
              (c) “Recommendations Concerning Ships Not Covered by the Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk”, (Resolution A.328(IX)), adopted November 12, 1975 by Assembly Resolution A.329(IX).

                Independent tank is a cargo tank that is permanently affixed to the vessel, is self-supporting, and is not part of the hull or essential to the strength or integrity of the hull.

                Independent tank type A is an independent cargo tank designed primarily using classification society classical ship structural analysis procedures.

                Independent tank type B is an independent cargo tank designed from model tests, refined analytical tools, and analysis methods to determine stress levels, fatigue life, and crack propagation characteristics.

                Independent tank type C (pressure tank) is an independent cargo tank meeting pressure vessel criteria where the dominant stress producing load is design vapor pressure.

                Insulation space means a space, that could be an interbarrier space, occupied wholly or in part by insulation.

                Integral tank means a cargo tank that is a structural part of the vessel's hull and is influenced in the same manner and by the same loads that stress the adjacent hull structure.

                Interbarrier space means the space between a primary and a secondary barrier, with or without insulation or other material.

                Length (L) is ninety-six percent of the total length in meters on a waterline at eighty-five percent of the least molded depth measured from the top of the keel or the length from the foreside of the stem to the axis of the rudder stock on the waterline, whichever is greater. In vessels having a rake of keel, the waterline is parallel to the design waterline.

                Liquefied gas means a cargo having a vapor pressure of 172 kPa (25 psia) or more at 37.8 °C (100 °F).

                MARVS stands for the Maximum Allowable Relief Valve Setting.

                Membrane tank is a cargo tank that is not self-supporting and consists of a thin layer (membrane) supported through insulation by the adjacent hull structure.

                New gas vessel means a self-propelled vessel that—
              (a) Is constructed under a building contract awarded after October 31, 1976;
              (b) In the absence of a building contract, has a keel laid or is at a similar stage of construction after December 31, 1976;
              (c) Is delivered after June 30, 1980; or
              (d) Has undergone a major conversion for which—
              (1) The building contract is awarded after October 31, 1976;
              (2) In the absence of a building contract, conversion is begun after December 31, 1976; or
              (3) Conversion is completed after June 30, 1980.

                Primary barrier means the inner boundary that contains the cargo when the cargo containment system includes two boundaries.

                Process pressure vessel means a pressure vessel that is used in a reliquefaction, cargo heating, or other system that processes cargo.

                Remote group alarm means an audible and visual alarm that alerts when an alarm condition exists but does not identify that condition.

                Secondary barrier means the liquid resisting outer boundary of a cargo containment system when the cargo containment system includes two boundaries.

                Semi-membrane tank is a cargo tank that is not self-supporting and that can expand and contract due to thermal, hydrostatic, and pressure loadings. It consists of flat surfaces, supported through insulation by the adjacent hull structure, and shaped corners that connect the flat surfaces.

                Service space means a space outside the cargo area that is used for a galley, pantry containing cooking appliances, locker or store room, workshop except those in machinery spaces, and similar spaces and trunks to those spaces.

                Shut-off valve is a valve that closes a pipeline and provides nominal metal to metal contact between the valve operating parts, including the disc and gate, and the valve body.

                Specific gravity (p) means the ratio of the density of the cargo at the design temperature to the density of water at 4 °C (39 °F).

                Tank cover is the structure protecting those parts of the cargo containment system that protrude through the weather deck and providing continuity to the deck structure.

                Tank dome means the uppermost portion of the cargo tank. For below deck cargo containment systems, it means the uppermost portion of the cargo tank that protrudes through the weather deck or through the tank cover.

                Toxic cargoes includes the following liquefied gases from Table 4 (follows § 154.1872):

                Acetaldehyde
                Ammonia, anhydrous
                Dimethylamine
                Ethylamine
                Ethyl chloride
                Ethylene oxide
                Methyl bromide
                Methyl chloride
                Sulfur dioxide
                Vinyl chloride

                Vapor pressure means the absolute equilibrium pressure of the saturated vapor above the liquid, expressed in kPa (psia), at a specific temperature.

                Void space means an enclosed space in the cargo area outside of the cargo containment system, except a hold space, ballast space, fuel oil tank, cargo pump or compressor room, or any space used by personnel.

                1974 Safety Convention stands for the International Convention on Safety of Life at Sea, 1974, done at London, November 1, 1974.

              § 154.9
              Issuance of documents.
              The Coast Guard issues an endorsed Certificate of Inspection to a U.S. flag vessel or an endorsed Certificate of Compliance to a foreign flag vessel that meets this part.

              § 154.12
              Existing gas vessel: Endorsements and requirements.
              (a) Except an existing gas vessel under paragraph (b), (c), or (d) of this section, an existing gas vessel must meet subpart C of this part if the owner desires a document endorsed for the carriage of a cargo listed in Table 4 (follows § 154.1872).
              (b) If an existing gas vessel is issued a document by the Coast Guard before November 1, 1987 that is endorsed for the carriage of a cargo listed in Table 4 (follows § 154.1872), and the owner desires the same endorsement on a reissued document, the vessel must—
              (1) Continue to meet the same design and construction standards under which the Coast Guard issued the original document; and
              (2) Meet paragraph (e) of this section.
              (c) If an existing gas vessel is issued a document by the Coast Guard before November 1, 1987 that is endorsed for the carriage of a cargo listed in Table 4 (follows § 154.1872), and the owner desires an endorsement for a different cargo listed in that table, the vessel must—
              (1) Continue to meet the same design and construction standards under which the Coast Guard issued the original document;
              (2) Meet paragraph (e) of this section;
              (3) Meet subpart D for the different cargo; and
              (4) Meet any additional requirements of this part that the Commandant (CG-ENG) determines to be necessary for safety.
              (d) If an existing gas vessel does not meet paragraph (b) or (c) of this section and the owner desires a document endorsed for the carriage of a cargo listed in Table 4 (follows § 154.1872), the vessel must—
              (1) Have a letter from the Coast Guard dated before November 1, 1987 stating that—
              (i) Review of the vessel's plans for the carriage of that cargo is completed; or
              (ii) The vessel's IMO Certificate endorsed for the carriage of that cargo is accepted;

              (2) Meet the plans that were reviewed and marked “Examined” or “Approved” by the Coast Guard, or meet the standards under which the IMO Certificate was issued;
              (3) Meet paragraph (e) of this section; and
              (4) Meet any additional requirements of this part that the Commandant (CG-ENG) determines to be necessary for safety.
              (e) If the owner of a vessel desires any document endorsement described in paragraph (b), (c), or (d) of this section, the existing gas vessel must meet the requirements in each of the following:
              (1) Section 154.310 (d) and (e).
              (2) Section 154.320 (b) and (c).
              (3) Section 154.330 (a) through (e).
              (4) Section 154.340(d).
              (5) Section 154.345 (a), (b)(1) through (b)(5), (b)(7) and (c).
              (6) Section 154.476(a).
              (7) Section 154.519(a)(2).
              (8) Section 154.534.
              (9) Section 154.538.
              (10) Section 154.540 (c) and (d).
              (11) Section 154.556.
              (12) Section 154.558.
              (13) Section 154.560.
              (14) Section 154.562.
              (15) Section 154.703.
              (16) Section 154.705.
              (17) Section 154.706.
              (18) Section 154.707.
              (19) Section 154.708.
              (20) Section 154.709.
              (21) Section 154.904.
              (22) Section 154.906.
              (23) Section 154.908(a), unless the space is separated from the accommodation, service, or control space by a steel door that—
              (i) Is watertight when tested with a firehose at not less than 207 kPa gauge (30 psig);
              (ii) Has a means to self-close and does not have latches or other devices designed to hold it open; and
              (iii) Has an audible and visual alarm on both sides of the door which is actuated when the door is open.
              (24) Section 154.910.
              (25) Section 154.912.
              (26) Sections 154.1110 through 154.1130, except §§ 154.1115(b), 154.1120(b), and 154.1125 (c) and (f).
              (27) Section 154.1145, except an existing gas vessel with a cargo carrying capacity of less than 2500 m 3 (88,200 ft 3) may have only one self-contained dry chemical storage unit if that unit—
              (i) is installed before November 1, 1987; and
              (ii) Has the capacity to meet § 154.1145 (d) and (e), and § 154.1170(e).
              (28) Section 154.1150 (a) and (b).
              (29) Section 154.1155.
              (30) Section 154.1160.
              (31) Section 154.1165 (a), (b), (d), and (f).
              (32) Section 154.1170 (b) through (f).
              (33) Section 154.1200 (a), (b)(1), and (b)(2).
              (34) Section 154.1205(f).
              (35) Section 154.1325.
              (36) Section 154.1335(e).
              (37) Section 154.1350 (e), (f), (i), (o), and (u).

              § 154.15
              U.S. flag vessel: Endorsement application.
              (a) A person who desires the endorsement required under § 154.1801 for a U.S. flag vessel must submit an application for an endorsement of the vessel's Subchapter D Certificate of Inspection under the procedures in § 91.55-15 of this chapter.
              (b) The person requesting an endorsement under paragraph (a) of this section must submit to the Coast Guard, if requested—
              (1) Calculations for hull design required by § 172.175 of this chapter;
              (2) The plans and information listed in §§ 54.01-18, 56.01-10, 91.55-5 (a), (b), (d), (g), and (h), and 110.25-1 of this chapter;
              (3) Plans for the dry chemical supply and distribution systems, including the controls; and
              (4) Any other vessel information, including, but not limited to plans, design calculations, test results, certificates, and manufacturer's data, needed to determine whether or not the vessel meets the standards of this part.

              § 154.17
              U.S. flag vessel: Certificate of Inspection endorsement.

              The Certificate of Inspection for a U.S. flag vessel allowed to carry a liquefied gas listed in Table 4 has the following endorsement for each cargo, with the corresponding carriage requirement data inserted:

                Inspected and approved for the carriage of ___ at a maximum allowable relief valve setting of ___ kPa gauge (___ psig) with an F factor of ___, a maximum external pressure of ___ kPa gauge (___ psig), a minimum service temperature of ___ °C (___ °F), and a maximum specific gravity of ___. Hull type ___.

              § 154.19
              U.S. flag vessel: IMO certificate issuance.
              (a) Either a classification society authorized under 46 CFR part 8, or the Coast Guard Officer in Charge, Marine Inspection, issues an IMO Certificate to a U.S. flag vessel when requested by the owner or representative, if—
              (1) The vessel meets the requirements of this part; and
              (2) It is a new gas vessel, it meets the IMO Resolution A.328(IX), “Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk, 1975”; or
              (3) It is an existing gas vessel, it meets the IMO “Code for Existing Ships Carrying Liquefied Gases in Bulk, 1975”.
              (b) The IMO Certificate expires on the same date that the vessel's Certificate of Inspection expires.
              [CGD 77-069, 52 FR 31626, Aug. 21, 1987, as amended by CGD 95-010, 62 FR 67537, Dec. 24, 1997]

              § 154.22
              Foreign flag vessel: Certificate of Compliance endorsement application.
              (a) A person who desires an endorsed Certificate of Compliance to meet § 154.1802(a) of this part for a foreign flag vessel, whose flag administration issues IMO Certificates, must submit to the Commanding Officer (MSC), Attn: Marine Safety Center, U.S. Coast Guard Stop 7430, 2703 Martin Luther King Jr. Avenue SE., Washington, DC 20593-7430, in a written or electronic format, an application that includes the following:
              (1) The vessel's valid IMO Certificate.
              (2) A description of the vessel.
              (3) Specifications for the cargo containment system.
              (4) A general arrangement plan of the vessel.
              (5) A midship section plan of the vessel.
              (6) Schematic plans of the liquid and vapor cargo piping.
              (7) A firefighting and safety plan.
              (8) If the applicant is requesting an endorsement for the carriage of ethylene oxide, a classification society certification that the vessel meets § 154.1725(a) (4), (5), and (7).
              (9) If the vessel is a new gas vessel, or an existing vessel that does not meet § 154.12 (b), (c), or (d)—
              (i) A certification from a classification society that the vessel—
              (A) Has enhanced grades of steel meeting § 154.170 (b)(1) and (b)(2) for crack arresting purposes in the deck stringer, sheer strake, and bilge strake; and
              (B) Meets § 154.701, or if the vessel carries methane, meets § 154.703, by having the capability of cargo tank pressure and temperature control without venting; and
              (ii) The vessel's valid SOLAS Cargo Ship Safety Construction Certificate and Cargo Ship Safety Equipment Certificate.
              (10) Any additional plans, certificates, and information needed by the Commanding Officer, Marine Safety Center to determine whether or not the vessel meets this part.
              (b) A person who desires an endorsed Certificate of Compliance to meet § 154.1802(b) for a foreign flag vessel, whose flag administration does not issue IMO Certificates, must submit to the Commanding Officer, Marine Safety Center the plans, calculations, and information under § 154.15(b).
              [CGD 77-069, 52 FR 31626, Aug. 21, 1987, as amended by CGD 88-070, 53 FR 34535, Sept. 7, 1988; CGD 89-025, 54 FR 19571, May 8, 1989; CGD 95-072, 60 FR 50466, Sept. 29, 1995; 60 FR 54106, Oct. 19, 1995; USCG-2005-23172, 70 FR 75734, Dec. 21, 2005; USCG-2007-29018, 72 FR 53967, Sept. 21, 2007; USCG-2013-0671, 78 FR 60155, Sept. 30, 2013; USCG-2016-0498, 82 FR 35092, July 28, 2017]

              § 154.24
              Foreign flag vessel: IMO Certificate.

              (a) An IMO Certificate issued under the IMO Resolution A.328(IX),”Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk, 1975” is usually sufficient evidence of compliance with this part for the Coast Guard to endorse a foreign flag vessel's Certificate of Compliance with the name of each cargo in Table 4 (follows § 154.1872) that is listed on the IMO Certificate, if the information listed in item 3 of the IMO Certificate shows that—

              (1) The design ambient temperatures meet § 154.174 and § 154.176;
              (2) The cargo tank design stress factors and resulting MARVS of independent tanks type B or C meet § 154.447 or § 154.450; and
              (3) The cargo tank MARVS of a type IIPG ship meets § 172.175(c) of this chapter.
              (b) If a foreign flag existing gas vessel meets § 154.12 (b), (c), or (d), the vessel's IMO Certificate issued under the IMO “Code for Existing Ships Carrying Liquefied Gases in Bulk, 1975” is usually sufficient evidence of compliance with the requirements of § 154.12(e) for the Coast Guard to endorse the Certificate of Compliance with the name of each cargo in Table 4 (follows § 154.1872) that is listed on the IMO Certificate; however if a foreign flag existing gas vessel does not meet § 154.12 (b), (c), or (d), an IMO Certificate issued under the IMO “Code for Existing Ships Carrying Liquefied Gases in Bulk, 1975” is not acceptable evidence of compliance with the requirements of this part for the endorsement of a Certificate of Compliance.

              § 154.30
              [Reserved]

              § 154.32
              Equivalents.
              (a) A vessel that fails to meet the standards in this part for an endorsement on a Certificate of Inspection or a Certificate of Compliance may meet an alternate standard if the Commandant (CG-ENG) finds that the alternate standard provides an equivalent or greater level of protection for the purpose of safety.
              (b) The Commandant (CG-ENG) considers issuance of a finding of equivalence to the standard required by this part if the person requesting the finding submits a written application to the Commandant (CG-ENG) that includes—
              (1) A detailed explanation of the vessel's characteristics that do not meet the requirements in this part; and
              (2) An explanation of how each substituted standard would enable the vessel to meet a level of safety that would be equivalent to or greater than the standard in this part.
              (c) Operational methods or procedures may not be substituted for a particular fitting, material, appliance, apparatus, item, or type of equipment required in this part.

              § 154.34
              Special approval: Requests.
              Each request for special approval must be in writing and submitted to the Commandant (CG-ENG), Attn: Office of Design and Engineering Systems, U.S. Coast Guard Stop 7509, 2703 Martin Luther King Jr. Avenue SE., Washington, DC 20593-7509.
              [CGD 77-069, 52 FR 31626, Aug. 21, 1987, as amended by USCG-2013-0671, 78 FR 60155, Sept. 30, 2013]

              § 154.36
              Correspondence and vessel information: Submission.
              Correspondence to the Coast Guard and all vessel information submitted to the Coast Guard must be in English, except—
              (a) IMO Certificates may be in French; and
              (b) SOLAS Certificates may be in the official language of the flag administration.

              § 154.40
              Right of appeal.
              Any person directly affected by a decision or action taken under this part, by or on behalf of the Coast Guard, may appeal therefrom in accordance with subpart 1.03 of this chapter.
              [CGD 88-033, 54 FR 50381, Dec. 6, 1989]

            Subpart B—Inspections and Tests

              Examination Requirements for Foreign Flag Vessels

                § 154.150
                Examination required for a Certificate of Compliance.
                Before a vessel receives an initial or reissued Certificate of Compliance endorsed with the name of a cargo from Table 4 of this part, the vessel must call at a United States port for an examination, during which the Officer in Charge, Marine Inspection, determines whether or not the vessel meets the requirements of this chapter.
                [CGD 81-052, 50 FR 8734, Mar. 5, 1985]

                § 154.151
                Procedures for having the Coast Guard examine a vessel for a Certificate of Compliance.
                To have the Coast Guard examine the vessel for a Certificate of Compliance, as required in § 154.150, the owner of a foreign flag vessel must proceed as follows:
                (a) After submitting an application under § 154.22, await notification by the Commanding Officer, Marine Safety Center that review of the vessel's plans or IMO Certificate and supporting documents is complete.
                (b) Except when paragraph (c) of this section applies,
                (1) After receiving notification from Commanding Officer, Marine Safety Center that review is complete and the application is acceptable, dispatch the vessel to a United States port;
                (2) Notify the Officer in Charge, Marine Inspection, for the port where the vessel is to be inspected at least seven days before the vessel arrives and arrange the exact time and other details of the examination. This notification is in addition to any other pre-arrival notice to the Coast Guard required by other regulations and must include:
                (i) The name of the vessel's first U.S. port of call;
                (ii) The date the vessel is scheduled to arrive;
                (iii) The name and telephone number of the owner's local agent; and
                (iv) The names of all cargoes listed in Table 4 of this part that are on board the vessel;
                (3) Make sure that the following items are available on board the vessel for the use of the Marine Inspector before beginning the examination required by § 154.150:
                (i) A general arrangement (including the location of firefighting, safety, and lifesaving gear); and
                (ii) The cargo manual required by § 154.1810.
                (c) If the vessel was accepted for U.S. service on the basis of Coast Guard plan review under § 154.22(b), the vessel owner must notify Commanding Officer, Marine Safety Center 14 days prior to the vessel's arrival at a U.S. port. This notification must include:
                (1) The name of the vessel's first U.S. port of call;
                (2) The date the vessel is scheduled to arrive;
                (3) The name and telephone number of the owner's local agent; and
                (4) The names of all cargoes listed in Table 4 of this part that are on board the vessel.
                [CGD 81-052, 50 FR 8734, Mar. 5, 1985; 50 FR 15895, Apr. 23, 1985; CGD 77-069, 52 FR 31630, Aug. 21, 1987; CGD 95-072, 60 FR 50466, Sept. 29, 1995; 60 FR 54106, Oct. 19, 1995; USCG-2013-0671, 78 FR 60155, Sept. 30, 2013]

            Subpart C—Design, Construction and Equipment

              Hull Structure

                § 154.170
                Outer hull steel plating.
                (a) Except as required in paragraph (b) of this section, the outer hull steel plating, including the shell and deck plating must meet the material standards of the American Bureau of Shipping published in “Rules for Building and Classing Steel Vessels” 1981.
                (b) Along the length of the cargo area, grades of steel must be as follows:
                (1) The deck stringer and sheer strake must be at least Grade E steel or a grade of steel that has equivalent chemical properties, mechanical properties, and heat treatment, and that is specially approved by the Commandant (CG-ENG).
                (2) The strake at the turn of the bilge must be Grade D, Grade E, or a grade of steel that has equivalent chemical properties, mechanical properties, and heat treatment, and that is specially approved by the Commandant (CG-ENG).
                (3) The outer hull steel of vessels must meet the standards in § 154.172 if the hull steel temperature is calculated to be below −5 °C (23 °F) assuming:
                (i) For any waters in the world, the ambient cold conditions of still air at 5 °C (41 °F) and still sea water at 0 °C (32 °F);

                (ii) For cargo containment systems with secondary barriers, the temperature of the secondary barrier is the design temperature; and

                (iii) For cargo containment systems without secondary barriers, the temperature of the cargo tank is the design temperature.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983; CGD 77-069, 52 FR 31630, Aug. 21, 1987]

                § 154.172
                Contiguous steel hull structure.
                (a) Except as allowed in paragraphs (b) and (c) of this section, plates, forgings, forged and rolled fittings, and rolled and forged bars and shapes used in the construction of the contiguous steel hull structure must meet the thickness and steel grade in Table 1 for the temperatures under §§ 154.174(b) and 154.176(b).
                (b) for a minimum temperature, determined under §§ 154,174(b) and 154.176(b), below −25 °C (−13 °F), the contiguous steel hull structure must meet § 54.25-10 for that minimum temperature.
                (c) If a steel grade that is not listed in Table 1 has the equivalent chemical properties, mechanical properties, and heat treatment of a steel grade that is listed, the steel grade not listed may be specially approved by the Commandant (CG-ENG), for use in the contiguous hull structure.

                  Table 1—Minimum Temperature, Thickness, and Steel Grades in Contiguous Hull Structures

                    Minimumtemperature

                    Steel thickness
                    Steel 1 grade

                    0 °C (32 °F)
                    All
                    Standards of the American Bureau of Shipping published in “Rules for Building and Classing Steel Vessels”, 1981

                    −10 °C (14 °F)
                    T≤112.5 mm (1/2 in.)
                    B

                    12.5<t≤25.5 mm (1 in.)
                    D

                    >25.5 mm (1 in.)
                    E

                    −25 °C (−13 °F)
                    t≤112.5 mm (1/2 in.)
                    D

                    >12.5 mm (1/2 in.)
                    E

                    1 Steel grade of the American Bureau of Shipping published in “Rules for Building and Classing Steel Vessels”, 1981.

                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983; CGD 77-069, 52 FR 31630, Aug. 21, 1987]

                § 154.174
                Transverse contiguous hull structure.
                (a) The transverse contiguous hull structure of a vessel having cargo containment systems without secondary barriers must meet the standards of the American Bureau of Shipping published in “Rules for Building and Classing Steel Vessels”, 1981.
                (b) The transverse contiguous hull structure of a vessel having cargo containment systems with secondary barriers must be designed for a temperature that is:
                (1) Colder than the calculated temperature of this hull structure when:
                (i) The temperature of the secondary barrier is the design temperature, and
                (ii) The ambient cold condition under § 154.176(b)(1)(ii) and (iii) are assumed; or
                (2) Maintained by the heating system under § 154.178.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 77-069, 52 FR 31630, Aug. 21, 1987]

                § 154.176
                Longitudinal contiguous hull structure.
                (a) The longitudinal contiguous hull structure of a vessel having cargo containment systems without secondary barriers must meet the standards of the American Bureau of Shipping published in “Rules for Building and Classing Steel Vessels”, 1981.
                (b) The longitudinal contiguous hull structure of a vessel having cargo containment systems with secondary barriers must be designed for a temperature that is:
                (1) Colder than the calculated temperature of this hull structure when:
                (i) The temperature of the secondary barrier is the design temperature; and
                (ii) For any waters in the world except Alaskan waters, the ambient cold condition of:
                (A) Five knots air at −18 °C (0 °F); and
                (B) Still sea water at 0 °C (32 °F); or
                (iii) For Alaskan waters the ambient cold condition of:
                (A) Five knots air at −29 °C (−20 °F); and
                (B) Still sea water at −2 °C (28 °F); or

                (2) Maintained by the heating system under § 154.178, if, without heat, the contiguous hull structure is designed for a temperature that is colder than the calculated temperature of the hull structure assuming the:
                (i) Temperature of the secondary barrier is the design temperature; and
                (ii) Ambient cold conditions of still air at 5 °C (41 °F) and still sea water at 0 °C (32 °F).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 77-069, 52 FR 31630, Aug. 21, 1987]

                § 154.178
                Contiguous hull structure: Heating system.
                The heating system for transverse and longitudinal contiguous hull structure must:
                (a) Be shown by a heat load calculation to have the heating capacity to meet § 154.174(b)(2) or § 154.176(b)(2);
                (b) Have stand-by heating to provide 100% of the required heat load and distribution determined under paragraph (a); and
                (c) Meet Parts 52, 53, and 54 of this chapter.

                § 154.180
                Contiguous hull structure: Welding procedure.
                Welding procedure tests for contiguous hull structure designed for a temperature colder than −18 °C (0 °F) must meet § 54.05-15 and subpart 57.03 of this chapter.

                § 154.182
                Contiguous hull structure: Production weld test.
                If a portion of the contiguous hull structure is designed for a temperature colder than −34 °C (−30 °F) and is not part of the secondary barrier, each 100m (328 ft.) of full penetration butt welded joints in that portion of the contiguous hull structure must pass the following production weld tests in the position that the joint is welded:
                (a) Bend tests under § 57.06-4 of this chapter.
                (b) A Charpy V-notch toughness test under § 57.06-5 of this chapter on one set of 3 specimens alternating the notch location on successive tests between the center of the weld and the most critical location in the heat affected zone. 2

                    2 The most critical location in the heat affected zone of the weld is based on procedure qualification results, except austenitic stainless steel need have notches only in the center of the weld.

                (c) If the contiguous hull structure does not pass the test under paragraph (b) of this section, the retest procedures under § 54.05-5(c) must be met.

                § 154.188
                Membrane tank: Inner hull steel.
                For a vessel with membrane tanks, the inner hull plating thickness must meet the deep tank requirements of the American Bureau of Shipping published in “Rules for Building and Classing Steel Vessels”, 1981.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 77-069, 52 FR 31630, Aug. 21, 1987]

                § 154.195
                Aluminum cargo tank: Steel enclosure.
                (a) An aluminum cargo tank and its dome must be enclosed by the vessel's hull structure or a separate steel cover.
                (b) The steel cover for the aluminum cargo tank must meet the steel structural standards of the American Bureau of Shipping published in “Rules for Building and Classing Steel Vessels”, 1981.
                (c) The steel cover for the aluminum tank dome must be:
                (1) At least 3.2 mm (1/8 in.) thick;
                (2) Separated from the tank dome, except at the support points; and
                (3) Thermally isolated from the dome.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 77-069, 52 FR 31630, Aug. 21, 1987]

              Ship Survival Capability and Cargo Tank Location

                § 154.200
                Stability requirements: General.
                Each vessel must meet the applicable requirements in subchapter S of this chapter.
                [CGD 79-023, 48 FR 51009, Nov. 4, 1983]

                § 154.235
                Cargo tank location.
                (a) For type IG hulls, cargo tanks must be located inboard of:

                (1) The transverse extent of damage for collision penetration specified in Table 172.180 of this chapter;

                (2) The vertical extent of damage for grounding penetration specified in Table 172.180 of this chapter; and
                (3) 30 inches (760 mm) from the shell plating.
                (b) For type IIG, IIPG, and IIIG hulls, cargo tanks must be located inboard of:
                (1) The vertical extent of damage for grounding penetration specified in Table 172.180 of this chapter; and
                (2) 30 inches (760 mm) from the shell plating.
                (c) In vessels having membrane and semi-membrane tanks, the vertical and transverse extents of damage must be measured to the inner hull.
                (d) For type IIG, IIPG, and IIIG hulls, cargo tank suction wells may penetrate into the area of bottom damage specified as the vertical extent of damage for grounding penetration in Table 172.180 of this chapter if the penetration is the lesser of 25% of the double bottom height or 13.8 in. (350 mm).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 79-023, 48 FR 51010, Nov. 4, 1983]

              Ship Arrangements

                § 154.300
                Segregation of hold spaces from other spaces.
                Hold spaces must be segregated from machinery and boiler spaces, accommodation, service and control spaces, chain lockers, potable, domestic and feed water tanks, store rooms and spaces immediately below or outboard of hold spaces by a:
                (a) Cofferdam, fuel oil tank, or single gastight A-60 Class Division of all welded construction in a cargo containment system not required by this part to have a secondary barrier;
                (b) Cofferdam or fuel oil tank in a cargo containment system required by this part to have a secondary barrier; or
                (c) If there are no sources of ignition or fire hazards in the adjoining space, single gastight A-O Class Division of all welded construction.

                § 154.305
                Segregation of hold spaces from the sea.
                In vessels having cargo containment systems required by this part to have a secondary barrier, hold spaces must be segregated from the sea by:
                (a) A double bottom if the cargo tanks meet this part for design temperatures colder than −10 °C (14 °F); and
                (b) Wing tanks if the cargo tanks meet this part for design temperatures colder than −55 °C (−67 °F).

                § 154.310
                Cargo piping systems.
                Cargo liquid or vapor piping must:
                (a) Be separated from other piping systems, except where an interconnection to inert gas or purge piping is required by § 154.901(a);
                (b) Not enter or pass through any accommodation, service, or control space;
                (c) Except as allowed under § 154.703, not enter or pass through a machinery space other than a cargo pump or compressor room;
                (d) Be in the cargo area except:
                (1) As allowed under § 154.703;
                (2) Bow and stern loading piping; and
                (3) Emergency jettisoning piping.
                (e) Be above the weather deck except:
                (1) As allowed under § 154.703;
                (2) Pipes in a trunk traversing void spaces above a cargo containment system; and
                (3) Pipes for draining, venting, or purging interbarrier and hold spaces;
                (f) Connect into the cargo containment system above the weather deck except:
                (1) Pipes in a trunk traversing void spaces above a cargo containment system; and
                (2) Pipes for draining, venting, or purging interbarrier and hold spaces.
                (g) Be inboard of the transverse cargo tank location required by § 154.235, except for athwartship shore connection manifolds not subject to internal pressure at sea.

                § 154.315
                Cargo pump and cargo compressor rooms.
                (a) Cargo pump rooms and cargo compressor rooms must be above the weather deck and must be within the cargo area.
                (b) Where pumps and compressors are driven by a prime mover in an adjacent gas safe space:
                (1) The bulkhead or deck must be gastight; and

                (2) The shafting passing through the bulkhead or deck must be sealed by a fixed oil reservoir gland seal, a pressure grease seal, or another type of positive pressure seal specially approved by the Commandant (CG-ENG).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.320
                Cargo control stations.
                (a) Cargo control stations must be above the weather deck.
                (b) If a cargo control station is in accommodation, service, or control spaces or has access to such a space, the station must:
                (1) Be a gas safe space;
                (2) Have an access to the space that meets § 154.330; and
                (3) Have indirect reading instrumentation, except for gas detectors.
                (c) Cargo control stations, including a room or area, must contain all alarms, indicators, and remote controls associated with each cargo tank that the station controls.

                § 154.325
                Accommodation, service, and control spaces.
                (a) Accommodation, service, and control spaces must be outside the cargo area.
                (b) If a hold space having a cargo containment system, required by this part to have a secondary barrier, is separated from any accommodation, service, or control space by a cruciform joint, there must be a cofferdam providing at least 760 mm (30 inches) by 760 mm (30 inches) clearance on one side of the cruciform joint.

                § 154.330
                Openings to accommodation, service, or control spaces.
                (a) Entrances, forced or natural ventilation intakes and exhausts, and other openings to accommodation, service, or control spaces, except as allowed in paragraph (c) of this section, must be:
                (1) At least L/25 or 3.05m (10 ft) from the athwartship bulkhead facing the cargo area, whichever is farther, except that the distance need not exceed 5m (16.4 ft); and
                (2) On a house athwartship bulkhead not facing the cargo area or on the outboard side of the house.
                (b) Each port light, located on the athwartship bulkhead of a house facing the cargo area or the house sides within the distance specified in paragraph (a)(1) of this section, must be a fixed type.
                (c) Wheelhouse doors and windows that are not fixed may be within the distance specified in paragraph (a)(1) of this section from the athwartship bulkhead of a house facing the cargo area, if they have gaskets and pass a tightness test with a fire hose at not less than 207 kPa gauge (30 psig).
                (d) Port lights in the hull plating below the uppermost continuous deck and in the first tier of the superstructure must be a fixed type.
                (e) Air intakes and openings into accommodation, service, and control spaces must have metal closures that pass a tightness test with a fire hose at not less than 207 kPa gauge (30 psig).
                (f) On liquefied toxic gas vessels, the closures required in paragraph (e) of this section must be capable of being closed from inside the space.

                § 154.340
                Access to tanks and spaces in the cargo area.
                (a) Each cargo tank must have a manhole from the weather deck, the clear opening of which is at least 600 mm by 600 mm (23.6 in. by 23.6 in.).
                (b) Each access into and through a void space or other gas-dangerous space in the cargo area, except spaces described in paragraph (e) of the definition for “gas-dangerous space” in § 154.7, must—
                (1) Have a clear opening of at least 600 mm by 600 mm (23.6 in. by 23.6 in.) through horizontal openings, hatches, or manholes;
                (2) Have a clear opening of at least 600 mm by 800 mm (23.6 in. by 31.5 in.) through bulkheads, frames or other vertical structural members; and
                (3) Have a fixed ladder if the lower edge of a vertical opening is more than 600 mm (23.6 in.) above the deck or bottom plating.
                (c) Each access trunk in the cargo area must be at least 760 mm (30 in.) in diameter.

                (d) The lower edge of each access from the weather deck to gas-safe spaces in the cargo area must be at least 2.4 m (7.9 ft.) above the weather deck or the access must be through an air lock that meets § 154.345.

                (e) The inner hull in the cargo area must be accessible for inspection from at least one side without the removal of any fixed structure or fitting.
                (f) The hold space insulation in the cargo area must be accessible for inspection from at least one side from within the hold space or there must be a means, that is specially approved by the Commandant, of determining from outside the hold space whether or not the hold space insulation meets this part.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 77-069, 52 FR 31630, Aug. 21, 1987]

                § 154.345
                Air locks.
                (a) An air lock may be used for access from a gas-dangerous zone on the weather deck to a gas-safe space.
                (b) Each air lock must:
                (1) Consist of two steel doors, at least 1.5 m (4.9 ft.) but not more than 2.5 m (8.2 ft.) apart, each gasketed and tight when tested with a fire hose at not less 207 kPa gauge (30 psig);
                (2) Have self-closing doors with no latches or other devices for holding them open;
                (3) Have an audible and visual alarm on both sides which are actuated when both door securing devices are in other than the fully closed position at the same time;
                (4) Have mechanical ventilation in the space between the doors from a gas-safe area;
                (5) Have a pressure greater than that of the gas-dangerous area on the weather deck;
                (6) Have the rate of air change in the space between the doors of at least 8 changes per hour; and
                (7) Have the space between the doors monitored for cargo vapor leaks under § 154.1350.
                (c) In addition to the requirements of paragraphs (a) and (b) of this section, no gas-safe space on a liquefied flammable gas carrier may have an air lock unless the space:
                (1) Is mechanically ventilated to make the pressure in the space greater than that in the air lock; and
                (2) Has a means of automatically de-energizing all electrical equipment that is not explosion-proof in the space when the pressure in the space falls to or below the pressure in the air lock.

                § 154.350
                Bilge and ballast systems in the cargo area.
                (a) Hold, interbarrier, and insulation spaces must have a means of sounding the space or other means of detecting liquid leakage specially approved by the Commandant (CG-ENG).
                (b) Each hold and insulation space must have a bilge drainage system.
                (c) Interbarrier spaces must have an eductor or pump for removing liquid cargo and returning it to the cargo tanks or to an emergency jettisoning system meeting § 154.356.
                (d) Spaces in the cargo containment portion of the vessel, except ballast spaces and gas-safe spaces, must not connect to pumps in the main machinery space.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.355
                Bow and stern loading piping.
                (a) Bow and stern loading piping must:
                (1) Meet § 154.310;
                (2) Be installed in an area away from the accommodation, service, or control space on type IG hulls;
                (3) Be clearly marked;
                (4) Be segregated from the cargo piping by a removable spool piece in the cargo area or by at least two shut-off valves in the cargo area that have means of locking to meet § 154.1870(a);
                (5) Have a means for checking for cargo vapor between the two valves under paragraph (a)(4) of this section;
                (6) Have fixed inert gas purging lines; and
                (7) Have fixed vent lines for purging with inert gas to meet § 154.1870(b).
                (b) Entrances, forced or natural ventilation intakes, exhausts, and other openings to accommodation, service, or control spaces that face the bow or stern loading area must meet § 154.330.

                § 154.356
                Cargo emergency jettisoning piping.
                Emergency jettisoning piping must:
                (a) Meet § 154.355(a);

                (b) Be designed to allow cargo discharge without the outer hull steel temperature falling below the minimum temperatures under §§ 154.170 and 154.172; and
                (c) Be specially approved by the Commandant (CG-ENG).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

              Cargo Containment Systems

                § 154.401
                Definitions.
                As used in §§ 154.440 and 154.447:
                “σY” means the minimum yield strength of the tank material, including weld metal, at room temperature.
                “σB” means minimum tensile strength of the tank material, including weld metals, at room temperature.

                § 154.405
                Design vapor pressure (Po) of a cargo tank.
                (a) The design vapor pressure (Po) of a cargo tank must be equal to or greater than the MARVS.
                (b) The Po of a cargo tank must be equal to or greater than the vapor pressure of the cargo at 45 °C (113 °F) if:
                (1) The cargo tank has no temperature control for the cargo; and
                (2) The vapor pressure of the cargo results solely from ambient temperature.
                (c) The Po of a cargo tank may be exceeded under harbor conditions if specially approved by the Commandant (CG-ENG).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.406
                Design loads for cargo tanks and fixtures: General.
                (a) Calculations must show that a cargo tank and its fixtures are designed for the following loads:
                (1) Internal pressure head.
                (2) External pressure load.
                (3) Dynamic loads resulting from the motion of the vessel.
                (4) Transient or stationary thermal loads if the design temperature is colder than −55 °C (−67 °F) or causes thermal stresses in cargo tank supports.
                (5) Sloshing loads, if the cargo tank is designed for partial loads.
                (6) Loads resulting from vessel's deflection.
                (7) Tank weight, cargo weight, and corresponding support reaction.
                (8) Insulation weight.
                (9) Loads of a pipe tower and any other attachments to the cargo tank.
                (10) Vapor pressure loads in harbor conditions allowed under § 154.405.
                (11) Gas pressurization if the cargo tank is designed for gas pressurization as a means of cargo transfer.
                (b) A cargo tank must be designed for the most unfavorable static heel angle within a 0° to 30° range without exceeding the allowable stress of the material.
                (c) A hydrostatic or hydropneumatic test design load must be specially approved by the Commandant (CG-ENG).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983; USCG-2014-0688, 79 FR 58284, Sept. 29, 2014]

                § 154.407
                Cargo tank internal pressure head.

                (a) For the calculation required under § 154.406(a)(1) and (b), the internal pressure head (heq), must be determined from the following formula:

                heq = 10 Po + (hgd)max

                  where:

                  hgd (the value of internal pressure, in meters of fresh water, resulting from the combined effects of gravity and dynamic accelerations of a full tank) = aβ Zβ Y;

                  where:

                  aβ = dimensionless acceleration relative to the acceleration of gravity resulting from gravitational and dynamic loads in the β direction (see figure 1);
                  Zβ = largest liquid height (m) above the point where the pressure is to be determined in the β direction (see figure 2);
                  Y = maximum specific weight of the cargo (t/m3) at the design temperature.

                  EC02FE91.083

                  EC02FE91.084

                (b) The (hgd) max is determined for the β direction, on the ellipse in Figure 1, which gives the maximum value for hgd.
                (c) When the longitudinal acceleration is considered in addition to the vertical transverse acceleration, an ellipsoid must be used in the calculations instead of the ellipse contained in Figure 1.

                § 154.408
                Cargo tank external pressure load.
                For the calculation required under § 154.406 (a)(2) and (b), the external pressure load must be the difference between the minimum internal pressure (maximum vacuum), and the maximum external pressure to which any portion of the cargo tank may be simultaneously subjected.

                § 154.409
                Dynamic loads from vessel motion.

                (a) For the calculation required under § 154.406 (a)(3) and (b), the dynamic loads must be determined from the long term distribution of vessel motions, including the effects of surge, sway, heave, roll, pitch, and yaw on irregular seas that the vessel may experience during 108 wave encounters. The speed used for this calculation may be reduced from the ship service speed if specially approved by the Commandant (CG-ENG) and if that reduced speed is used in the hull strength calculation under § 31.10-5(c) of this chapter.
                (b) If the loads determined under paragraphs (c), (d), or (e) of this section result in a design stress that is lower than the allowable stress of the material under §§ 154.610, 154.615, or 154.620, the allowable stress must be reduced to that stress determined in paragraphs (c), (d), or (e).

                (c) If a tank is designed to avoid plastic deformation and buckling, then acceleration components of the dynamic loads must be determined for the largest loads the vessel may experience during an operating life corresponding to the probability level of 10−8, by using one of the following methods:
                (1) Method 1 is a detailed analysis of the vessel's acceleration components.

                (2) Method 2 applies to vessels of 50 m (164 ft) or more in length and is an analysis by the following formulae that corresponds to a 10−8 probability level in the North Atlantic:
                (i) Vertical acceleration under paragraph (f)(1) of this section:

                  EC02FE91.085

                  EC02FE91.086

                (d) If a cargo tank is designed to avoid fatigue, the dynamic loads determined under paragraph (a) of this section must be used to develop the dynamic spectrum.

                (e) If a cargo tank is designed to avoid uncontrolled crack propagation, the dynamic loads are:
                (1) Determined under paragraph (a) of this section; and
                (2) For a load distribution for a period of 15 days by the method in Figure 3.

                  EC02FE91.087

                (f) When determining the accelerations for dynamic loads under paragraph (a) of this section, the accelerations acting in a cargo tank must be estimated for the cargo tank's center of gravity and include the following component accelerations:
                (1) Vertical accelerations, meaning the motion acceleration of heave and pitch, and of any roll normal to the vessel base that has an effect on the component acceleration.
                (2) Transverse acceleration, meaning the motion acceleration of sway, yaw and roll, and gravity component of roll.
                (3) Longitudinal acceleration, meaning the motion acceleration of surge and pitch and gravity component of pitch.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.410
                Cargo tank sloshing loads.
                (a) For the calculation required under § 154.406 (a)(5) and (b), the determined sloshing loads resulting from the accelerations under § 154.409(f) must be specially approved by the Commandant (CG-ENG).
                (b) If the sloshing loads affect the cargo tank scantlings, an analysis of the effects of the sloshing loads in addition to the calculation under paragraph (a) of this section must be specially approved by the Commandant (CG-ENG).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.411
                Cargo tank thermal loads.
                For the calculations required under § 154.406(a)(4), the following determined loads must be specially approved by the Commandant (CG-ENG):
                (a) Transient thermal loads for the cooling down periods of cargo tanks for design temperatures lower than −55 °C (−67 °F).
                (b) Stationary thermal loads for cargo tanks for design temperatures lower than −55 °C (−67 °F) that cause high thermal stress.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.412
                Cargo tank corrosion allowance.
                A cargo tank must be designed with a corrosion allowance if the cargo tank:
                (a) is located in a space that does not have inert gas or dry air; or

                (b) carries a cargo that corrodes the tank material.

                  Note:
                  Corrosion allowance for independent tank type C is contained in § 54.01-35 of this chapter.

              Integral Tanks

                § 154.418
                General.
                An integral tank must not be designed for a temperature colder than −10 °C (14 °F), unless the tank is specially approved by the Commandant (CG-ENG).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.419
                Design vapor pressure.
                The Po of an integral tank must not exceed 24.5 kPa gauge (3.55 psig) unless special approval by the Commandant (CG-ENG) allows a Po between 24.5 kPa gauge (3.55 psig) and 69 kPa gauge (10 psig).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.420
                Tank design.
                (a) The structure of an integral tank must meet the deep tank scantling standards of the American Bureau of Shipping published in “Rules for Building and Classing Steel Vessels”, 1981.
                (b) The structure of an integral tank must be designed and shown by calculation to withstand the internal pressure determined under § 154.407.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 77-069, 52 FR 31630, Aug. 21, 1987]

                § 154.421
                Allowable stress.

                The allowable stress for the integral tank structure must meet the American Bureau of Shipping's allowable stress for the vessel's hull published in “Rules for Building and Classing Steel Vessels”, 1981.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 77-069, 52 FR 31630, Aug. 21, 1987]

              Membrane Tanks

                § 154.425
                General.
                The design of the hull structure and the design of the membrane tank system, that includes the membrane tank, secondary barrier, including welds, the supporting insulation, and pressure control equipment, must be specially approved by the Commandant (CG-ENG).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.426
                Design vapor pressure.
                The Po of a membrane tank must not exceed 24.5 kPa gauge (3.55 psig) unless special approval by the Commandant (CG-ENG) allows a Po between 24.5 kPa gauge (3.55 psig) and 69 kPa gauge (10 psig).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.427
                Membrane tank system design.
                A membrane tank system must be designed for:
                (a) Any static and dynamic loads with respect to plastic deformation and fatigue;
                (b) Combined strains from static, dynamic, and thermal loads;
                (c) Preventing collapse of the membrane from:
                (1) Over-pressure in the interbarrier space;
                (2) Vacuum in the cargo tank;
                (3) Sloshing in a partially filled cargo tank; and
                (4) Hull vibrations; and
                (d) The deflections of the vessel's hull.

                § 154.428
                Allowable stress.
                The membrane tank and the supporting insulation must have allowable stresses that are specially approved by the Commandant (CG-ENG).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.429
                Calculations.
                The tank design load calculations for a membrane tank must include the following:
                (a) Plastic deformation and fatigue life resulting from static and dynamic loads in the membrane and the supporting insulation.
                (b) The response of the membrane and its supporting insulation to vessel motion and acceleration under the worst weather conditions. Calculations from a similar vessel may be submitted to meet this paragraph.
                (c) The combined strains from static, dynamic, and thermal loads.

                § 154.430
                Material test.
                (a) The membrane and the membrane supporting insulation must be made of materials that withstand the combined strains calculated under § 154.429(c).
                (b) Analyzed data of a material test for the membrane and the membrane supporting insulation must be submitted to the Commandant (CG-ENG).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.431
                Model test.
                (a) The primary and secondary barrier of a membrane tank, including the corners and joints, must withstand the combined strains from static, dynamic, and thermal loads calculated under § 154.429(c).
                (b) Analyzed data of a model test for the primary and secondary barrier of the membrane tank must be submitted to the Commandant (CG-ENG).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.432
                Expansion and contraction.
                The support system of a membrane tank must allow for thermal and physical expansion and contraction of the tank.

              Semi-Membrane Tanks

                § 154.435
                General.
                (a) The design of a semi-membrane tank, the supporting insulation for the tank, and the supporting hull structure for the tank must be specially approved by the Commandant (CG-ENG).
                (b) A semi-membrane tank must be designed to meet:
                (1) § 154.425 through § 154.432;
                (2) § 154.437 through § 154.440; or
                (3) § 154.444 through § 154.449.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.436
                Design vapor pressure.
                The Po of a semi-membrane tank must not exceed 24.5 kPa gauge (3.55 psig) unless special approval by the Commandant (CG-ENG) allows a Po between 24.5 kPa gauge (3.55 psig) and 69 kPa gauge (10 psig).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

              Independent Tank Type A

                § 154.437
                General.
                An independent tank type A must meet § 154.438 through § 154.440.

                § 154.438
                Design vapor pressure.

                (a) If the surface of an independent tank type A are mostly flat surfaces, the Po must not exceed 69 kPa gauge (10 psig).

                (b) If the surfaces of an independent tank type A are formed by bodies of revolution, the design calculation of the Po must be specially approved by the Commandant (CG-ENG).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983; USCG-2014-0688, 79 FR 58284, Sept. 29, 2014]

                § 154.439
                Tank design.
                An independent tank type A must meet the deep tank standard of the American Bureau of Shipping published in “Rules for Building and Classing Steel Vessels”, 1981, and must:
                (a) Withstand the internal pressure determined under § 154.407;
                (b) Withstand loads from tank supports calculated under §§ 154.470 and 154.471; and
                (c) Have a corrosion allowance that meets § 154.412.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 77-069, 52 FR 31630, Aug. 21, 1987]

                § 154.440
                Allowable stress.
                (a) The allowable stresses for an independent tank type A must:

                (1) For tank web frames, stringers, or girders of carbon manganese steel or aluminum alloys, meet σB/2.66 or σY/1.33, whichever is less; and
                (2) For other materials, be specially approved by the Commandant (CG-ENG).

                (b) A greater allowable stress than required in paragraph (a)(1) of this section may be specially approved by the Commandant (CG-ENG) if the equivalent stress (σc) is calculated from the formula in appendix A of this part.
                (c) Tank plating must meet the American Bureau of Shipping's deep tank standards, for an internal pressure head that meets § 154.439(a), published in “Rules for Building and Classing Steel Vessels”, 1981.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983; CGD 77-069, 52 FR 31630, Aug. 21, 1987]

              Independent Tank Type B

                § 154.444
                General.
                An independent tank type B must be designed to meet §§ 154.445 through 154.449.

                § 154.445
                Design vapor pressure.

                If the surfaces of an independent tank type B are mostly flat surfaces, the Po must not exceed 69 kPa gauge (10 psig).

                § 154.446
                Tank design.
                An independent tank type B must meet the calculations under § 154.448.

                § 154.447
                Allowable stress.

                (a) An independent tank type B designed from bodies of revolution must have allowable stresses 3
                   determined by the following formulae:

                    3 See Appendix B for stress analyses definitions.

                σm≤f

                σL≤1.5 f

                σb≤1.5 F

                σL + σb≤1.5 F

                σm + σb≤1.5 F

                  where:

                  σm = equivalent primary general membrane stress 4

                      4 See Appendix A for equivalent stress.

                  σL = equivalent primary local membrane stress 4

                  σb = equivalent primary bending stress 4

                  f = the lesser of (σB/A) or (σY/B)
                  F = the lesser of (σB/C) or (σY/D)
                  A, B, C, and D = stress factors in Table 2.

                  Table 2—Values for Stress Factors

                    Nickel steel and carbon manganese steel values
                    Austenitic steel values
                    Aluminum alloy values

                    Stress factors:

                    A
                    4.0
                    4.0
                    4.0

                    B
                    2.0
                    1.6
                    1.5

                    C
                    3.0
                    3.0
                    3.0

                    D
                    1.5
                    1.5
                    1.5

                (b) An independent tank type B designed from plane surfaces must have allowable stresses specially approved by the Commandant (CG-ENG).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.448
                Calculations.
                The following calculations for an independent tank type B must be specially approved by the Commandant (CG-ENG):
                (a) Plastic deformation, fatigue life, buckling, and crack propagation resulting from static and dynamic loads on the tank and its support.
                (b) A three-dimensional analysis of the stress exerted by the hull on the tank, its support, and its keys.
                (c) The response of the tank and its support to the vessel's motion and acceleration in irregular waves or calculations from a similar vessel.
                (d) A tank buckling analysis considering the maximum construction tolerance.
                (e) A finite element analysis using the loads determined under § 154.406.
                (f) A fracture mechanics analysis using the loads determined under § 154.406.
                (g) The cumulative effects of the fatigue load from the following formula:

                  EC02FE91.088

                  where:

                  ni = the number of stress cycles at each stress level during the life of the vessel;
                  Ni = the number of cycles to failure for corresponding stress levels from the Wohler (S-N) curve;
                  Nj = the number of cycles to failure from the fatigue load by loading and unloading the tank; and
                  Cw = 0.5 or less. A Cw of greater than 0.5 but not exceeding 1.0 may be specially approved by the Commandant (G-MTH).

                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.449
                Model test.
                The following analyzed data of a model test of structural elements for independent tank type B must be submitted to the Commandant (CG-ENG) for special approval:
                (a) Stress concentration factors.
                (b) Fatigue life.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

              Independent Tank Type C and Process Pressure Vessels

                § 154.450
                General.
                Independent tanks type C and process pressure vessels must be designed to meet the requirements under Part 54 of this chapter, except § 54.01-40(b), and:
                (a) The calculation under § 54.01-18 (b)(1) must also include the design loads determined under § 154.406;
                (b) The calculated tank plating thickness, including any corrosion allowance, must be the minimum thickness without a negative plate tolerance; and
                (c) The minimum tank plating thickness must not be less than:

                (1) 5mm (3/16 in.) for carbon-manganese steel and nickel steel;

                (2) 3mm (1/8 in.) for austenitic steels; or
                (3) 7mm (9/32 in.) for aluminum alloys.

                § 154.451
                Design vapor pressure.
                The Po (kPa) of an independent tank type C must be calculated by the following formula:

                Po = 196 + AC(ρ) 3/2

                  where:

                  A = 1.813 (σm/ΔσA) 2;
                  σm = design primary membrane stress;

                    ΔσA = (allowable dynamic membrane stress for double amplitude at probability level Q = 10−8) 53.9 MPa (7821 psi) for ferritic and martensitic steels and 24.5 MPa (3555 psi) for 5083-0 aluminum;
                  C = a characteristic tank dimension that is the greatest of h, 0.75b, or 0.45 l;

                  where:

                  h = the height of the tank or the dimension in the vessel's vertical direction, in meters;
                  b = the width of the tank or the dimension in the vessel's transverse direction; in meters; and
                  l = the length of the tank or the dimension in the vessel's longitudinal direction, in meters; and

                    ρ = the specific gravity of the cargo.

                § 154.452
                External pressure.
                The design external pressure, Pe, for an independent tank type C must be calculated by the following formula:

                Pe = P1 + P2 + P3 + P4

                  where:

                  P1 = the vacuum relief valve setting for tanks with a vacuum relief valve, or 24.5 kPa gauge (3.55 psig) for tanks without a vacuum relief valve.
                  P2 = 0, or the pressure relief valve setting for an enclosed space containing any portion of a pressure vessel.
                  P3 = total compressive load in the tank shell from the weight of the tank, including corrosion allowance, weight of insulation, weight of dome, weight of pipe tower and piping, the effect of the partially filled tank, the effect of acceleration and hull deflection, and the local effect of external and internal pressure.
                  P4 = 0, or the external pressure from the head of water from any portion of the pressure vessel on exposed decks.

                § 154.453
                Failure to meet independent tank type C standards.
                If the Commandant (CG-ENG) determines during plan review, that a tank designed as an independent tank type C fails to meet the standards under § 154.450, § 154.451, and 154.452 and cannot be redesigned to meet those standards, the tank may be redesigned as an independent tank type A or B.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983; USCG-2014-0688, 79 FR 58284, Sept. 29, 2014]

              Secondary Barrier

                § 154.459
                General.
                (a) Each cargo tank must have a secondary barrier that meets Table 3 and except as allowed in Table 3, the hull must not be the secondary barrier.
                (b) If the Commandant (CG-ENG) specially approves an integral tank for a design temperature at atmospheric pressure lower than −10 °C (14 °F), the integral tank must have a complete secondary barrier that meets § 154.460.
                (c) If the Commandant (CG-ENG) specially approves a semi-membrane tank under the requirements of an independent tank type B, the semi-membrane tank may have a partial secondary barrier specially approved by the Commandant (CG-ENG).
                (d) If Table 3 allows the hull to be a secondary barrier, the vessel's hull must:
                (1) Meet §§ 154.605 through 154.630; and
                (2) Be designed for the stresses resulting from the design temperature.

                  Table 3—Secondary Barriers for Tanks

                    Tank type
                    Cargo temperature (T) at atmospheric pressure
                    T≥−10 °C (14 °F)
                    T<-10 °C (14 °F)≥55 °C (−67 °F)
                    T<−55 °C (−67 °F)

                    Integral
                    No secondary barrier required
                    Tank type not usually allowed 1

                    Tank type not allowed.

                    Membrane
                    ......do
                    Complete secondary barrier 1

                    Complete secondary barrier.

                    Semi-membrane
                    ......do
                    ......do
                      Do.

                    Independent:

                    Type A
                    ......do
                    ......do
                      Do.

                    Type B
                    ......do
                    Partial secondary barrier 1

                    Partial secondary barrier.

                    Type C
                    ......do
                    No secondary barrier required
                    No secondary barrier required.

                    1 The hull may be a secondary barrier.

                (14 U.S.C. 632; 46 U.S.C. 369, 375, and 416; 49 U.S.C. 1655(b); 49 CFR 1.46(b))
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.460
                Design criteria.
                At static angles of heel up through 30°, a secondary barrier must
                (a) If a complete secondary barrier is required in § 154.459, hold all of the liquid cargo in the cargo tank for at least 15 days under the dynamic loads in § 154.409(e);
                (b) If a partial secondary barrier is permitted in § 154.459, hold any leakage of liquid cargo corresponding to the extent of failure under § 154.448(a) after initial detection or primary barrier leak for at least 15 days under the dynamic loads in § 154.409(e);
                (c) If the primary barrier fails, prevent the temperature of the vessel's structure from falling below the minimum allowable service temperature of the steel; and
                (d) Be designed so that a cargo tank failure does not cause a failure in the secondary barrier.

              Insulation

                § 154.465
                General.
                If the design temperature is below −10 °C (14 °F), the cargo tank insulation must prevent the temperature of the vessel's hull from cooling below the minimum temperature allowed under § 154.172.

                § 154.466
                Design criteria.
                (a) The insulation for a cargo tank without a secondary barrier must be designed for the cargo tank at the design temperature, and for a vessel operating in:
                (1) Any waters in the world, except Alaskan waters, for the ambient cold condition of:
                (i) Five knots air at −18 °C (0 °F); and
                (ii) Still sea water at 0 °C (32 °F); or
                (2) Alaskan waters for the ambient cold condition of:
                (i) Five knots air at −29 °C (20 °F); and
                (ii) Still sea water at −2 °C (28 °F).
                (b) The insulation for a cargo tank with a secondary barrier must be designed for the secondary barrier at the design temperature, and the ambient cold conditions listed under paragraph (a)(1) or paragraph (a)(2) of this section.
                (c) The insulation material must be designed for any loads transmitted from adjacent hull structure.
                (d) Insulation for cargo tank and piping must meet § 38.05-20 of this chapter.
                (e) Powder or granulated insulation must:
                (1) Not compact from vibrations of the vessel;
                (2) Maintain the thermal conductivity listed under § 154.467; and
                (3) Not exert a static pressure greater than the external design pressure of the cargo tank under § 154.408.

                § 154.467
                Submission of insulation information.
                The following insulation information must be submitted for special approval by the Commandant (CG-ENG):
                (a) Compatibility with the cargo.
                (b) Solubility in the cargo.
                (c) Absorption of the cargo.
                (d) Shrinkage.
                (e) Aging.
                (f) Closed cell content.
                (g) Density.
                (h) Mechanical properties.
                (i) Thermal expansion.
                (j) Abrasion.
                (k) Cohesion.
                (l) Thermal conductivity.
                (m) Resistance to vibrations.
                (n) Resistance to fire and flame spread.
                (o) The manufacturing and installation details of the insulation including:
                (1) Fabrication;

                (2) Storage;
                (3) Handling;
                (4) Erection; and
                (5) Quality control.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

              Support System

                § 154.470
                General.
                (a) A cargo tank must have a support system that:
                (1) prevents movement of the cargo tank under the static and dynamic loads in § 154.406; and
                (2) allows the cargo tank to contract and expand from temperature variation and hull deflection without exceeding the design stress of the cargo tank and the hull.
                (b) The cargo tank support system must have a key that prevents rotation of the cargo tank.
                (c) An independent tank must have supports with an antifloatation system that withstands the upward force of the tank without causing plastic deformation that endangers the hull structure when the tank is:
                (1) Empty; and
                (2) In a hold space flooded to the summer load draft of the vessel.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by USCG-2014-0688, 79 FR 58285, Sept. 29, 2014]

                § 154.471
                Design criteria.
                (a) The cargo tank support system must be designed:
                (1) For the loads in § 154.406(a);
                (2) To not exceed the allowable stress under this part at a static angle of heel of 30°;
                (3) To withstand a collision force equal to at least one-half the weight of the cargo tank and cargo from forward and one-quarter the weight of the cargo tank and cargo from aft; and
                (4) For the largest resulting acceleration in Figure 1, including rotational and translation effects.
                (b) The cargo tank support design loads in paragraph (a) of this section may be analyzed separately.

                § 154.476
                Cargo transfer devices and means.
                (a) If a cargo pump in a cargo tank is not accessible for repair when the cargo tank is in use, the cargo tank must have an additional means of cargo transfer, such as another pump or gas pressurization.
                (b) If cargo is transferred by gas pressurization, the pressurizing line must have a safety relief valve that is set at less than 90 percent of the tank relief valve setting.

              Cargo and Process Piping Systems

                § 154.500
                Cargo and process piping standards.
                The cargo liquid and vapor piping and process piping systems must meet the requirements in §§ 154.503 through 154.562, Subparts 56.01 through 56.35, §§ 56.50-20 and 56.50-105, and Subparts 56.60 through 56.97 of this chapter.

                § 154.503
                Piping and piping system components: Protection from movement.
                Where thermal movement and movements of the cargo tank and the hull structure may cause stresses that exceed the design stresses, the piping and piping system components and cargo tanks must be protected from movement by:
                (a) Offsets;
                (b) Loops;
                (c) Bends;
                (d) Mechanical expansion joints including:
                (1) Bellows;
                (2) Slip joints;
                (3) Ball joints; or
                (e) Other means specially approved by the Commandant (CG-ENG).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.506
                Mechanical expansion joint: Limits in a piping system.
                Mechanical expansion joints in a piping system outside of a cargo tank:
                (a) May be installed only if offsets, loops or bends cannot be installed due to limited space or piping arrangement;
                (b) Must be a bellows type; and

                (c) Must not have insulation or a cover unless necessary to prevent damage.

                § 154.512
                Piping: Thermal isolation.
                Low temperature piping must be thermally isolated from any adjacent hull structure to prevent the temperature of that structure from dropping below the minimum temperature for the hull material under § 154.170.

                § 154.514
                Piping: Electrical bonding.
                (a) Cargo tanks or piping that are separated from the hull structure by thermal isolation must be electrically bonded to the hull structure by a method under paragraph (c) of this section.
                (b) A pipe joint or a hose connection fitting that has a gasket must be electrically bonded by a method under paragraph (c) of this section that bonds:
                (1) Both sides of the connection to the hull structure; or
                (2) Each side of the connection to the other side.
                (c) An electrical bond must be made by at least one of the following methods:
                (1) A metal bonding strap attached by welding or bolting.
                (2) Two or more bolts that give metal to metal contact between the bolts and the parts to be bonded.
                (3) Metal to metal contact between adjacent parts under designed operating conditions.

                § 154.516
                Piping: Hull protection.
                A vessel's hull must be protected from low temperature liquid leakage by a drip pan, or other means specially approved by the Commandant (CG-ENG), at:
                (a) Each piping connection dismantled on a routine basis;
                (b) Cargo discharge and loading manifolds; and
                (c) Pump seals.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.517
                Piping: Liquid pressure relief.
                The cargo loading and discharge crossover headers, cargo hoses, and cargo loading arms must have means to relieve cargo pressure and to remove liquid cargo.

                § 154.519
                Piping relief valves.
                (a) The liquid relief valve that protects the cargo piping system from liquid pressure exceeding the design pressure must discharge into:
                (1) A cargo tank; or
                (2) A cargo vent mast if that vent mast has a means for the detection and removal of the liquid cargo that is specially approved by the Commandant (CG-ENG).
                (b) A relief valve on a cargo pump that protects the cargo piping system must discharge into the pump suction.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.520
                Piping calculations.
                A piping system must be designed to meet the allowable stress values under § 56.07-10 of this chapter and, if the design temperature is −110 °C (−166 °F) or lower, the stress analysis must be specially approved by the Commandant (CG-ENG) and must include:
                (a) Pipe weight loads;
                (b) Acceleration loads;
                (c) Internal pressure loads;
                (d) Thermal loads; and
                (e) Loads from the hull.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.522
                Materials for piping.
                (a) The materials for piping systems must meet § 154.625 for the minimum design temperature of the piping, except the material for open ended vent piping may be specially approved by the Commandant (CG-ENG) if:
                (1) The temperature of the cargo at the pressure relief valve setting is −55 °C (−67 °F) or warmer; and
                (2) Liquid cannot discharge to the vent piping.

                (b) Materials for piping outside the cargo tanks must have a melting point of at least 925 °C (1697 °F), except for short lengths of pipes with fire resisting insulation that are attached to the cargo tanks.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by USCG-2014-0688, 79 FR 58285, Sept. 29, 2014]

                § 154.524
                Piping joints: Welded and screwed couplings.
                Pipe lengths without flanges must be joined by one of the following:
                (a) A butt welded joint with complete penetration at the weld root except that for design temperatures colder than −10 °C (14 °F) the butt weld must be double welded or must be welded using:
                (1) A backing ring that for design pressures greater than 979 kPa gauge (142 psig) must be removed after the weld is completed;
                (2) A consumable insert; or
                (3) An inert gas back-up on the first weld pass.
                (b) A slip-on welded joint with sleeves and attachment welds is allowed for an open ended pipe with an external diameter of 50 mm (2 in.) or less and a design temperature of −55 °C (−67 °F), or warmer.
                (c) A socket weld fitting with attachment welds is allowed for pipe with an external diameter of 50 mm (2 in.) or less and a design temperature of −55 °C (−67 °F) or warmer.
                (d) Screwed couplings are allowed for instrumentation and control piping that meets § 56.30-20 and § 56.50-105 (a)(4) and (b)(4) of this chapter.
                (e) A method or fitting specially approved by the Commandant (CG-ENG).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.526
                Piping joints: Flange connection.
                Flange connections for pipe joints must meet § 56.30-10 and § 56.50-105 (a)(4) and (b)(4) of this chapter.

                § 154.528
                Piping joints: Flange type.
                (a) A flange must be one of the following types:
                (1) Welding neck.
                (2) Slip-on.
                (3) Socket weld.
                (b) If the piping is designed for a temperature between −10 °C (14 °F) and −55 °C (−67 °F), the pipe flange may be a:
                (1) Slip-on type, if the nominal pipe size is 100 mm (4 in.) or less;
                (2) Socket weld, if the nominal pipe size is 50 mm (2 in.) or less; or
                (3) Welding neck.
                (c) If the piping is designed for a temperature lower than −55 °C (−67 °F), the pipe flange must be a welding neck type.

                § 154.530
                Valves: Cargo tank MARVS 69 kPa gauge (10 psig) or lower.
                (a) Except those connections for tank safety relief valves and for liquid level gauging devices other than those under §§ 154.536 and 154.1310, liquid and vapor connections on a cargo tank with a MARVS of 69 kPa gauge (10 psig) or lower must have shut-off valves that—
                (1) Are located as close to the tank as practical;
                (2) Are capable of local manual operation; and
                (3) May be remotely controlled.
                (b) The cargo piping system for a cargo tank with a MARVS of 69 kPa gauge (10 psig) or lower must have at least one remotely controlled quick-closing shut-off valve for closing liquid and vapor piping between vessel and shore that meets §§ 154.540 and 154.544.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 77-069, 52 FR 31630, Aug. 21, 1987]

                § 154.532
                Valves: Cargo tank MARVS greater than 69 kPa gauge (10 psig).
                (a) Except connections for tank safety relief valves and except for liquid level gauging devices other than those under §§ 154.536 and 154.1310, liquid and vapor connections on a cargo tank with a MARVS greater than 69 kPa gauge (10 psig) must have, as close to the tank as practical, a:
                (1) Stop valve capable of local manual operation; and
                (2) A remotely controlled quick-closing shut-off valve.
                (b) If the nominal pipe size of a liquid or vapor connection is less than 50 mm (2 in.), an excess flow valve may be substituted for the quick-closing valve under paragraph (a) of this section.

                (c) One valve may be substituted for the manual controlled stop valve and the remotely controlled quick-closing shut-off valve required under paragraph (a) of this section if that valve:
                (1) Meets §§ 154.540 and 154.544; and
                (2) Is capable of local manual operation.

                § 154.534
                Cargo pumps and cargo compressors.
                Cargo pumps and cargo compressors must shut-down automatically when the quick-closing shut-off valves under §§ 154.530 and 154.532 are closed by the emergency shut-down system required under § 154.540.

                § 154.536
                Cargo tank gauging and measuring connections.
                Unless the outward flow from a cargo tank is less than the flow through a circular hole of 1.4 mm (0.055 in.) in diameter, cargo tank connections for gauging or measuring devices must have the excess flow, shut-off, or quick-closing shut-off valves under § 154.530 or § 154.532.

                § 154.538
                Cargo transfer connection.
                A cargo transfer connection must have a:
                (a) Remotely controlled quick-closing shut-off valve that meets §§ 154.540 and 154.544; or
                (b) Blank flange.

                § 154.540
                Quick-closing shut-off valves: Emergency shut-down system.
                The quick-closing shut-off valves under §§ 154.530, 154.532, and 154.538 must have an emergency shut-down system that:
                (a) Closes all the valves;
                (b) Is actuated by a single control in at least two locations remote from the quick-closing valves;
                (c) Is actuated by a single control in each cargo control station under § 154.320; and
                (d) Has fusible elements at each tank dome and cargo loading and discharge manifold that melt between 98 °C (208 °F) and 104 °C (220 °F) and actuate the emergency shut-down system.

                § 154.544
                Quick-closing shut-off valves.
                The quick-closing shut-off valve under §§ 154.530, 154.532 and 154.538 must:
                (a) Be a shut-off valve;
                (b) Close from the time of actuation in 30 seconds or less;
                (c) Be the fail-closed type; and
                (d) Be capable of local manual closing.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 77-069, 52 FR 31630, Aug. 21, 1987]

                § 154.546
                Excess flow valve: Closing flow.
                (a) The rated closing flow of vapor or liquid cargo for an excess flow valve must be specially approved by the Commandant (CG-ENG).
                (b) An excess flow valve allowed under § 154.532(b) must close automatically at the rated closing flow.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.548
                Cargo piping: Flow capacity.
                Piping with an excess flow valve must have a vapor or liquid flow capacity that is greater than the rated closing flow under § 154.546.

                § 154.550
                Excess flow valve: Bypass.
                If the excess flow valve allowed under § 154.532(b) has a bypass, the bypass must be of 1.0 mm (0.0394 in.) or less in diameter.

              Cargo Hose

                § 154.551
                Cargo hose: General.
                Each of the vessel's liquid and vapor cargo hose for loading or discharging cargo must meet §§ 154.552 through 154.562.

                § 154.552
                Cargo hose: Compatibility.
                Liquid and vapor cargo hoses must:
                (a) Not chemically react with the cargo; and
                (b) Withstand design temperature.

                § 154.554
                Cargo hose: Bursting pressure.
                Cargo hose that may be exposed to the pressure in the cargo tank, the cargo pump discharge, or the vapor compressor discharge must have a bursting pressure of at least five times the maximum working pressure on the hose during cargo transfer.

                § 154.556
                Cargo hose: Maximum working pressure.
                A cargo hose must have a maximum working pressure not less than the maximum pressure to which it may be subjected and at least 1034 kPa gauge (150 psig).

                § 154.558
                Cargo hose: Marking.
                Each cargo hose must be marked with the:
                (a) Maximum working pressure; and
                (b) Minimum service temperature for service at other than ambient temperature.

                § 154.560
                Cargo hose: Prototype test.
                (a) Each cargo hose must be of a type that passes a prototype test at a pressure of at least five times its maximum working pressure at or below the minimum service temperature.
                (b) Each cargo hose must not be the hose used in the prototype test.

                § 154.562
                Cargo hose: Hydrostatic test.
                Each cargo hose must pass a hydrostatic pressure test at ambient temperature of at least one and a half times its specified maximum working pressure but not more than two-fifths its bursting pressure.

              Materials

                § 154.605
                Toughness test.
                (a) Each toughness test under §§ 154.610 through 154.625 must meet Subpart 54.05 of this chapter.
                (b) If subsize test specimens are used for the Charpy V-notch toughness test, the Charpy V-notch energy must meet Table 54.05-20 (a) of this chapter.

                § 154.610
                Design temperature not colder than 0 °C (32 °F).
                Materials for cargo tanks for a design temperature not colder than 0 °C (32 °F) must meet the following:
                (a) The tank materials must meet §§ 54.25-1 and 54.25-3 of this chapter.
                (b) Plates, forgings, rolled and forged bars and shapes must be carbon manganese steel or other material allowed under §§ 154.615, 154.620, and 154.625.
                (c) Plates must be normalized or quenched and tempered and where the thickness exceeds 20 mm (0.787 in.), made with fine grain practice, austenitic grain size of five or finer. A control rolling procedure may be substituted for normalizing if specially approved by the Commandant (CG-ENG). Plate for an independent tank type C must also meet the requirements of ASTM A 20 (incorporated by reference, see § 154.1) and § 54.01-18(b)(5) of this chapter.
                (d) For integral and independent type A tanks, the American Bureau of Shipping's grade D not exceeding 20 mm (0.787 in.) in thickness, and Grade E hull structural steel are allowed if the steel meets § 54.05-10 of this chapter.
                (e) The tensile properties under paragraph (a) of this section must be determined for:
                (1) Each plate as rolled; and
                (2) Each five short ton batch of forgings, forged or rolled fittings, and forged or rolled bars and shapes.
                (f) The specified yield strength must not exceed 637 MPa (92.43 Ksi) and when it exceeds 490 MPa (71.10 Ksi), the hardness of the weld and the heat affected zone must be specially approved by the Commandant (CG-ENG).
                (g) The Charpy V-notch impact energy must be determined for:
                (1) Each plate as rolled; and
                (2) Each five short ton batch of forgings, forged or rolled fittings and rolled or forged bars and shapes.
                (h) The orientation and required impact energy of a 10 mm × 10 mm (0.394 in. × 0.394 in.) Charpy V-notch specimen must be:
                (1) For plates; transverse specimen and 27.4 J (20 ft-lbs); and
                (2) For forgings, forged and rolled fittings and rolled and forged bars: longitudinal specimen and 41.1 J (30 ft-lbs).
                (i) The test temperature of the Charpy V-notch specimens is as follows:

                    Material Thickness
                    Test Temperature

                    t≤20 mm (0.788 in.)
                    0 °C (32 °F)

                    20<t<30 mm (1.182 in.)
                    −20 °C (−4 °F)

                    30<t<40 mm (1.576 in.)
                    −40 °C (−40 °F)

                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983; USCG-1999-5151, 64 FR 67183, Dec. 1, 1999]

                § 154.615
                Design temperature below 0 °C (32 °F) and down to −55 °C (−67 °F).
                Plates, forgings, forged or rolled or forged bars and shapes for cargo tanks and secondary barriers for a design temperature below 0 °C (32 °F) and down to −55 °C (−67 °F) must meet § 54.25-10 of this chapter.

                § 154.620
                Design temperature below −55 °C (−67 °F) and down to −165 °C (−265 °F).
                Plates, forgings and forged or rolled fittings, and rolled, forged or extruded bars and shapes for cargo tanks, secondary barriers, and process pressure vessels for a design temperature below −55 °C (−67 °F) and down to −165 °C (−265 °F) must:
                (a) Meet § 54.25-10(b)(2), § 54.25-15, or § 54.25-20 of this chapter; or
                (b) Be of an aluminum alloy that is specially approved by the Commandant (CG-ENG).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.625
                Design temperature below 0 °C (32 °F) and down to −165 °C (−265 °F).
                Pipes, tubes, forgings, castings, bolting, and nuts for cargo and process piping for a design temperature below 0 °C (32 °F) and down to −165 °C (−265 °F) must meet § 56.50-105 of this chapter.

                § 154.630
                Cargo tank material.
                (a) If a material of a cargo tank is not listed in §§ 154.610, 154.615 or § 154.620, the allowable stress of that material must be specially approved by the Commandant (CG-ENG).

                (b) For cargo tanks of aluminum alloys with welded connections, the minimum tensile strength (σB) for the calculations under § 154.440, § 154.447 and § 154.450 must be the minimum tensile strength of the alloy in the annealed condition.
                (c) Increased yield strength and tensile strength of a material at low temperature for independent tanks type A, B, and C must be specially approved by the Commandant (CG-ENG).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

              Construction

                § 154.650
                Cargo tank and process pressure vessel welding.
                (a) Cargo tank and process pressure vessel welding must meet Subpart 54.05 and Part 57 of this chapter.
                (b) Welding consumables used in welding cargo tanks must meet § 57.02-4 of this chapter.
                (c) Independent tanks must meet the following:
                (1) Each welded joint of the shells must be a full penetration butt weld, except dome to shell connections may have full penetration tee welds.
                (2) Each nozzle weld must be of the full penetration type, except for small penetrations on domes.
                (d) Each welded joint in an independent tank type C or in a process pressure vessel must meet part 54 of this chapter, except that any backing rings must be removed unless specially approved by the Commandant (CG-OES).
                (e) Each welded joint in a membrane tank must meet the quality assurance measures, weld procedure qualification, design details, materials, construction, inspection, and production testing of components developed during the prototype testing program that are specially approved by the Commandant (CG-OES) under this part.
                (f) Each welded joint in a semi-membrane tank must meet paragraph (c) or (e) of this section.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.655
                Stress relief for independent tanks type C.
                For a design temperature colder than −10 °C (14 °F), an independent tank type C of:
                (a) Carbon and carbon-manganese steel must be stress relieved by post-weld heat treatment under § 54.25-7 of this chapter or by mechanical stress relief under subpart 54.30 of this chapter; or
                (b) Materials other than carbon and carbon manganese steel must be stress relieved as required under part 54 of this chapter. The procedure for stress relieving must be specially approved by the Commandant (CG-OES).

                § 154.660
                Pipe welding.
                (a) Pipe welding must meet part 57 of this chapter.
                (b) Longitudinal butt welds, in piping that does not meet a standard or specification under § 56.60-1 of this chapter, and girth butt welds must meet the following:
                (1) Butt welds of pipes made from carbon, carbon manganese, or low alloy steels must meet § 56.50-105 of this chapter, including the requirements for post-weld heat treatment.
                (2) Except for piping inside an independent cargo tank type A, B, or C, butt welds must be 100% radiographically tested if the design temperature is lower than −10 °C (14 °F), and:
                (i) The wall thickness is greater than 10 mm (0.394 in.); or
                (ii) The nominal pipe diameter is greater than 100 mm (nominal 4 in.).
                (3) If Table 4 references this section, butt welds for deck cargo piping exceeding 75 mm (3 in.) in diameter must be 100% radiographically tested.
                (4) Butt welds of pipes not meeting paragraph (b)(2) or (b)(3) of this section must meet the non-destructive testing requirements under Subpart 56.95 of this chapter.

                § 154.665
                Welding procedures.
                Welding procedure tests for cargo tanks for a design temperature colder than 0 °C (32 °F), process pressure vessels, and piping must meet § 54.05-15 and Subpart 57.03 of this chapter.

              Cargo Pressure and Temperature Control

                § 154.701
                Cargo pressure and temperature control: General.
                Except as allowed under § 154.703, cargo tanks must:
                (a) Have their safety relief valves set at a pressure equal to or greater than the vapor pressure of the cargo at 45 °C (113 °F) but not greater than the MARVS under § 154.405; or
                (b) Be refrigerated by a system meeting § 154.702, and each refrigerated incompatible cargo refrigerated by a separate system.

                § 154.702
                Refrigerated carriage.
                (a) Each refrigeration system must:
                (1) Have enough capacity to maintain the cargo vapor pressure in each cargo tank served by the system below the set pressure of the relief valves under ambient temperatures of 45 °C (113 °F) still air and 32 °C (89.6 °F) still water with the largest unit in the system inoperative; or
                (2) Have a standby unit with a capacity at least equal to the capacity of the largest refrigeration unit in the system.
                (b) For the purpose of this section, a “refrigeration unit” includes a compressor and its motors and controls.
                (c) Each refrigeration system must:
                (1) Have a heat exchanger with an excess capacity of 25 percent of the required capacity; or
                (2) A standby heat exchanger.
                (d) Where cooling water is used in a refrigeration system:
                (1) The cooling water pump or pumps must be used exclusively for the system;
                (2) Each pump must have suction lines from sea chests on the port and starboard sides of the vessel; and
                (3) There must be a standby pump, that may be used for:
                (i) Non-essential purposes on the vessel; or
                (ii) Essential purposes on the vessel, if the pump is sized to simultaneously provide for the capacity requirements for the essential purposes and the refrigeration cooling water.
                (e) Each refrigeration system must use refrigerants that are compatible with the cargo and, for cascade units, with each other.
                (f) The pressure of the heat transfer fluid in each cooling coil in a tank must be greater than the pressure of the cargo.

                § 154.703
                Methane (LNG).
                Unless a cargo tank carrying methane (LNG) can withstand the pressure build up due to boil-off for 21 days, the pressure in the cargo tank must be maintained below the set pressure of the safety relief valve for at least 21 days by:
                (a) A refrigeration system that meets § 154.702;

                (b) A waste heat or catalytic furnace that burns boil-off gas, and:

                (1) Maintains the stack exhaust temperature below 535 °C (995 °F);
                (2) Exhibits no visible flame; and
                (3) Is specially approved by the Commandant (CG-OES);
                (c) Boilers, inert gas generators, and combustion engines in the main propelling machinery space that use boil-off gas as fuel; or
                (d) Equipment for services, other than those under paragraph (c) of this section, that use boil-off gas as fuel and that are located:
                (1) In the main propelling machinery space; or
                (2) a space specially approved by the Commandant (CG-OES).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.705
                Cargo boil-off as fuel: General.
                (a) Each cargo boil-off fuel system under § 154.703(c) must meet §§ 154.706 through 154.709.
                (b) The piping in the cargo boil-off fuel system must have a connection for introducing inert gas and for gas freeing the piping in the machinery space.
                (c) A gas fired main propulsion boiler or combustion engine must have a fuel oil fired pilot that maintains fuel flow as required under § 154.1854 if the gas fuel supply is cut-off.

                § 154.706
                Cargo boil-off as fuel: Fuel lines.
                (a) Gas fuel lines must not pass through accommodation, service, or control spaces. Each gas fuel line passing through other spaces must have a master gas fuel valve and meet one of the following:
                (1) The fuel line must be a double-walled piping system with the annular space containing an inert gas at a pressure greater than the fuel pressure. Visual and audible alarms must be installed at the machinery control station to indicate loss of inert gas pressure.
                (2) The fuel line must be installed in a mechanically exhaust-ventilated pipe or duct, having a rate of air change of at least 30 changes per hour. The pressure in the space between the inner pipe and outer pipe or duct must be maintained at less than atmospheric pressure. Continuous gas detection must be installed to detect leaks in the ventilated space. The ventilation system must meet § 154.1205.
                (b) Each double wall pipe or vent duct must terminate in the ventilation hood or casing under § 154.707(a). Continuous gas detection must be installed to indicate leaks in the hood or casing.

                § 154.707
                Cargo boil-off as fuel: Ventilation.
                (a) A ventilation hood or casing must be installed in areas occupied by flanges, valves, and piping at the fuel burner to cause air to sweep across them and be exhausted at the top of the hood or casing.
                (b) The hood or casing must be mechanically exhaust-ventilated and meet § 154.1205.
                (c) The ventilated hood or casing must have an airflow rate specially approved by the Commandant.

                § 154.708
                Cargo boil-off as fuel: Valves.
                (a) Gas fuel lines to the gas consuming equipment must have two fail-closed automatic valves in series. A third valve, designed to fail-open, must vent that portion of pipe between the two series valves to the open atmosphere.
                (b) The valves under paragraph (a) of this section must be arranged so that loss of boiler forced draft, flame failure, or abnormal gas fuel supply pressure automatically causes the two series valves to close and the vent valve to open. The function of one of the series valves and the vent valve may be performed by a single three-way valve.
                (c) A master gas fuel valve must be located outside the machinery space, but be operable from inside the machinery space and at the valve. The valve must automatically close when there is:
                (1) A gas leak detected under § 154.706(a)(2) or § 154.706(b);
                (2) Loss of the ventilation under § 154.706(a)(2) or § 154.707(c); or
                (3) Loss of inert gas pressure within the double-walled piping system under § 154.706(a)(1).

                § 154.709
                Cargo boil-off as fuel: Gas detection equipment.
                (a) The continuous gas detection system required under § 154.706(a)(2) and (b) must:
                (1) Meet § 154.1350(c), (d), and (j) through (s); and
                (2) Have a device that:
                (i) Activates an audible and visual alarm at the machinery control station and in the wheelhouse if the methane concentration reaches 1.5 percent by volume; and
                (ii) Closes the master gas fuel valve required under § 154.708(c) before the methane concentration reaches 3 percent by volume.
                (b) The number and arrangement of gas sampling points must be specially approved by the Commandant (CG-OES).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

              Cargo Vent Systems

                § 154.801
                Pressure relief systems.
                (a) Each cargo tank that has a volume of 20m3 (706 ft.3) or less must have at least one pressure relief valve.
                (b) Each cargo tank that has a volume of more than 20m3 (706 ft.3) must have at least two pressure relief valves of the same nominal relieving capacity.
                (c) Each pressure relief valve must:
                (1) Meet Subpart 162.018 of this chapter or, if the valve is also capable of vacuum relief and the MARVS is 69 kPa gauge (10 psig) or less, Subpart 162.017 of this chapter, and have at least the capacity required under § 154.806;
                (2) Not be set for a higher pressure than the MARVS;
                (3) Have a fitting for sealing wire that prevents the set pressure from being changed without breaking the sealing wire;
                (4) Be fitted on the cargo tank to remain in the vapor phase under conditions of 15° list and of 0.015 L trim by both the bow and stern;
                (5) Vent to a vent mast under § 154.805, except a relief valve may vent to a common tank relief valve header if the back pressure is included in determining the required capacity under § 154.806;
                (6) Not vent to a common header or common vent mast if the relief valves are connected to cargo tanks carrying chemically incompatible cargoes;
                (7) Not have any stop valves or other means of isolating the cargo tank from its relief valve unless:
                (i) The stop valves are interlocked or arranged so that only one pressure relief valve is out of service at any one time;
                (ii) The interlock arrangement automatically shows the relief valve that is out of service; and
                (iii) The other valves have the relieving capacity required under § 154.806, or all relief valves on the cargo tank are the same size and there is a spare of the same size, or there is a spare for each relief valve on a cargo tank.
                (d) The pressure relief system must:
                (1) If the design temperature is below 0 °C (32 °F), be designed to prevent the relief valve from becoming inoperative due to ice formation; and
                (2) Be designed to prevent chattering of the relief valve.
                [CGD 74-289, 44 FR 26009, May 3, 1979; 44 FR 59234, Oct. 15, 1979]

                § 154.802
                Alternate pressure relief settings.
                Cargo tanks with more than one relief valve setting must have one of the following arrangements:
                (a) Relief valves that:
                (1) Are set and sealed under § 154.801(c);
                (2) Have the capacity under § 154.806; and
                (3) Are interlocked so that cargo tank venting can occur at any time.
                (b) Relief valves that have spacer pieces or springs that:
                (1) Change the set pressure without pressure testing to verify the new setting; and
                (2) Can be installed without breaking the sealing wire required under § 154.801(c)(3).

                § 154.804
                Vacuum protection.

                (a) Except as allowed under paragraph (b) of this section, each cargo tank must have a vacuum protection system meeting paragraph (a)(1) of this section and either paragraph (a)(2) or (a)(3) of this section.
                (1) There must be a means of testing the operation of the system.
                (2) There must be a pressure switch that operates an audible and visual alarm in the cargo control station identifying the tank and the alarm condition and a remote group audible and visual alarm in the wheelhouse. Both alarms must be set at or below 80% of the maximum external design pressure differential of the cargo tanks. There must be a second, independent pressure switch that automatically shuts off all suction of cargo liquid or vapor from the cargo tank and secures any refrigeration of that tank at or below the maximum external design pressure differential.
                (3) There must be a vacuum relief valve that:
                (i) Has a gas flow capacity at least equal to the maximum cargo discharge rate per tank;
                (ii) Is set to open at or below the maximum external design pressure differential; and
                (iii) Admits inert gas, cargo vapor from a source other than a cargo vapor header, or air except as prohibited under § 154.1710.
                (b) A vacuum protection system does not have to be installed if the cargo tank is designed to withstand:
                (1) A maximum external pressure differential exceeding 24.5 kPa gauge (3.55 psig); and
                (2) The maximum external pressure differential that can be obtained:
                (i) At maximum discharge rates with no vapor return to the cargo tanks;
                (ii) By operation of the cargo refrigeration system; or
                (iii) By drawing off vapor for use in accordance with § 154.703(c)
                [CGD 74-289, 44 FR 26009, May 3, 1979; 44 FR 59234, Oct. 15, 1979]

                § 154.805
                Vent masts.
                Relief valves or common vent headers from relief valves must discharge to a vent mast that:
                (a) Discharges vertically upward;
                (b) Has a rain cap or other means of preventing the entrance of rain or snow;
                (c) Has a screen with 25mm (1 inch) wire mesh or bars not more than 25mm (1 in.) apart on the discharge port;
                (d) Extends at least to a height of B/3 or 6m (19.7 ft.), whichever is greater, above the weather deck and 6m (19.7 ft.) above the working level;
                (e) For a cargo tank, does not exhaust cargo vapors within a radius of B or 25m (82 ft.), whichever is less, from any forced or natural ventilation intake or other opening to an accommodation, service, control station, or other gas-safe space, except that for vessels less than 90m (295 ft.) in length, shorter distances may be specially approved by the Commandant (CG-OES);
                (f) For a containment system, except a cargo tank, does not exhaust vapor within a radius of 10m (32.8 ft.) or less from any forced or natural ventilation intake or other opening to an accommodation, service, control station, or other gas-safe space;
                (g) Has drains to remove any liquid that may accumulate; and
                (h) Prevents accumulations of liquid at the relief valves.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.806
                Capacity of pressure relief valves.
                Pressure relief valves for each cargo tank must have a combined relief capacity, including the effects of back pressure from vent piping, headers, and masts, to discharge the greater of the following with not more than a 20% rise in cargo tank pressure above the set pressure of the relief valves:
                (a) The maximum capacity of an installed cargo tank inerting system if the maximum attainable working pressure of the cargo tank inerting system exceeds the set pressure of the relief valves.
                (b) The quantity of vapors generated from fire exposure that is calculated under § 54.15-25 of this chapter.

              Atmospheric Control in Cargo Containment Systems

                § 154.901
                Atmospheric control within cargo tanks and cargo piping systems.
                (a) Each vessel must have a piping system for purging each cargo tank and all cargo piping.
                (b) The piping system must minimize the pocketing of gas or air remaining after purging.
                (c) For cargo tanks certificated to carry flammable gases, the piping system must allow purging the tank of flammable vapors before air is introduced and purging the tank of air before the tank is filled with cargo.
                (d) Each cargo tank must have:
                (1) Gas sampling points at its top and bottom; and
                (2) Gas sampling line connections that are valved and capped above the deck.

                § 154.902
                Atmospheric control within hold and interbarrier spaces.
                (a) Vessels certificated to carry flammable cargo in cargo containment systems with full secondary barriers must have an inert gas system or onboard storage of inert gas that provides enough inert gas to meet the requirements of § 154.1848 for 30 days consumption.
                (b) Vessels certificated to carry flammable cargo in cargo containment systems with partial secondary barriers must:
                (1) Have an inert gas system or onboard inert gas storage that can inert the largest hold and interbarrier space so that the oxygen concentration is 8 percent or less by volume; and
                (2) Meet paragraph (a) or (c)(2) of this section.
                (c) Vessels certificated to carry only nonflammable cargo in cargo containment systems with secondary barriers must:
                (1) Meet paragraph (a) of this section; or
                (2) Have air drying systems that reduce the dew point of air admitted to hold or interbarrier spaces below the temperature of any surface in those spaces or −45 °C (−49 °F), whichever is warmer.
                (d) Vessels with refrigerated independent tanks type C must have inert gas or air drying systems that reduce the dew point of any inert gas or air admitted to the hold spaces below the temperature of any surface in those spaces or −45 °C (−49 °F), whichever is warmer.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by USCG-2014-0688, 79 FR 58285, Sept. 29, 2014]

                § 154.903
                Inert gas systems: General.
                (a) Inert gas carried or generated to meet §§ 154.901, 154.902, and 154.1848 must be non-flammable and non-reactive with the cargoes that the vessel is certificated to carry and the materials of construction of the cargo tanks, hold and interbarrier spaces, and insulation.
                (b) The boiling point and dew point at atmospheric pressure of the inert gas must be below the temperature of any surface in those spaces or −45 °C (−49 °F), whichever is warmer.
                (c) For the temperatures and pressures at which the gas is stored and used, storage vessels and inert gas piping must meet §§ 154.450 and 154.500 respectively.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by USCG-2014-0688, 79 FR 58285, Sept. 29, 2014]

                § 154.904
                Inert gas system: Controls.
                The inert gas system must have:
                (a) At least one check valve in the cargo area to prevent the back flow of cargo vapor into the inert gas system, or another means specially approved by the Commandant (CG-OES);
                (b) If the inert gas system is in the machinery space or another space outside the cargo area, a second check valve in the cargo area meeting paragraph (a) of this section;
                (c) Automatic and manual inert gas pressure controls; and
                (d) Valves to isolate each inerted space.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.906
                Inert gas generators.
                The inert gas generator must:

                (a) Produce an inert gas containing less than 5% oxygen by volume;
                (b) Have a device to continuously sample the discharge of the generator for oxygen content; and
                (c) Have an audible and visual alarm in the cargo control station that alarms when the inert gas contains 5% or more oxygen by volume.

                § 154.908
                Inert gas generator: Location.
                (a) Except as allowed in paragraph (b) of this section, an inert gas generator must be located in the main machinery space or a space that is not in the cargo area and does not have direct access to any accommodation, service, or control space.
                (b) An inert gas generator that does not use flame burning equipment may be located in the cargo area if specially approved by the Commandant (CG-OES).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.910
                Inert gas piping: Location.
                Inert gas piping must not pass through or terminate in an accommodation, service, or control space.

                § 154.912
                Inerted spaces: Relief devices.
                Inerted spaces must be fitted with relief valves, rupture discs, or other devices specially approved by the Commandant (CG-OES).
                [CGD 74-289, 44 FR 26009, May 3, 1979; CGD 82-063b, 48 FR 39629, Sept. 1, 1983]

              Electrical

                § 154.1000
                Applicability.
                Sections 154.1005 through 154.1020 apply to flammable cargo and ammonia carriers.

                § 154.1002
                Definition.
                For the purposes of §§ 154.1005 through 154.1020, “gas-dangerous” does not include the weather deck of an ammonia carrier.

                § 154.1005
                Equipment approval.
                (a) Electrical equipment that is required to be intrinsically safe or explosion proof under § 154.1010 must be specially approved by the Commandant or listed as intrinsically safe or explosion proof by an independent laboratory that is specially approved by the Commandant (CG-OES), for Class I Division I locations and the Group that is specified in Table 4 for the cargo carried.
                (b) Each submerged cargo pump motor installation must be specially approved by the Commandant (CG-OES).
                (c) Electrical equipment that must be intrinsically safe to meet § 154.1010 must meet the definition in § 110.15-100(i) of this chapter.
                (d) Electrical equipment that must be explosion proof to meet § 154.1010 must meet § 110.15-65(e) of this chapter.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.1010
                Electrical equipment in gas-dangerous space or zone.
                (a) Except as allowed in this section, electrical equipment must not be installed in a gas-dangerous space or zone.
                (b) Intrinsically safe electrical equipment and wiring may be in a gas-dangerous space or zone.
                (c) A submerged cargo pump motor may be in a cargo tank if:
                (1) Low liquid level, motor current, or pump discharge pressure automatically shuts down power to the pump motor if the pump loses suction;
                (2) There is an audible and visual alarm at the cargo control station that actuates if the motor shuts down under the requirements of paragraph (c)(1) of this section; and
                (3) There is a lockable circuit breaker or lockable switch that disconnects the power to the motor.
                (d) A supply cable for a submerged cargo pump motor may be in a hold space.
                (e) A hold space that has a tank that is not required to have a secondary barrier under § 154.459 may only have:
                (1) Through runs of cable;
                (2) Explosion-proof lighting fixtures;
                (3) Depth sounding devices in gas-tight enclosures;
                (4) Log devices in gas-tight enclosures; and

                (5) Impressed current cathodic protection system electrodes in gas-tight enclosures.
                (f) A space that is separated by a gastight steel boundary from a hold space that has a cargo tank that must have a secondary barrier, under the requirements of § 154.459, may only have:
                (1) Through runs of cable;
                (2) Explosion-proof lighting fixtures;
                (3) Depth sounding devices in gastight enclosures;
                (4) Log devices in gastight enclosures;
                (5) Impressed current cathodic protection system electrodes in gastight enclosures;
                (6) Explosion-proof motors that operate cargo system valves or ballast system valves; and
                (7) Explosion-proof bells for general alarm systems.
                (g) A cargo handling room may only have:
                (1) Explosion-proof lighting fixtures; and
                (2) Explosion-proof bells for general alarm systems.
                (h) A space for cargo hose storage may only have:
                (1) Explosion-proof lighting fixtures; and
                (2) Through runs of cable.
                (i) A space that has cargo piping may only have:
                (1) Explosion-proof lighting fixtures; and
                (2) Through runs of cable.
                (j) A gas-dangerous zone on the weather deck may only have:
                (1) Explosion-proof equipment that is for the operation of the vessel; and
                (2) Through runs of cable.
                (k) A space, except those under paragraphs (e) through (j) of this section, that has a direct opening to a gas-dangerous space or zone may only have the electrical equipment allowed in the gas-dangerous space or zone.

                § 154.1015
                Lighting in gas-dangerous space.
                (a) Each gas-dangerous space that has lighting fixtures must have at least two branch circuits for lighting.
                (b) Each switch and each overcurrent protective device for any lighting circuit that is in a gas-dangerous space must open each conductor of the circuit simultaneously.
                (c) Each switch and each overcurrent protective device for lighting in a gas-dangerous space must be in a gas-safe space.

                § 154.1020
                Emergency power.
                The emergency generator must be designed to allow operation at the final angle of heel under § 154.230(a).

              Firefighting
              Firefighting System: Exterior Water Spray

                § 154.1105
                Exterior water spray system: General.
                Each liquefied flammable gas vessel and each liquefied toxic gas vessel must have an exterior water spray system that meets §§ 154.1110 through 154.1135.

                § 154.1110
                Areas protected by system.
                Each water spray system must protect:
                (a) All cargo tank surfaces that are not covered by the vessel's hull structure or a steel cover;
                (b) Each cargo tank dome;
                (c) Each on-deck storage vessel for flammable or toxic liquefied gases;
                (d) Each cargo discharge and loading manifold;
                (e) Each quick-closing valve under §§ 154.530, 154.532, and 154.538, and other control valves essential to cargo flow;
                (f) Each boundary facing the cargo area of each superstructure that contains accommodation, service, or control spaces;
                (g) Each boundary facing the cargo area of each deckhouse that contains accommodation, service, or control spaces; and
                (h) Each boundary of each deckhouse that is within the cargo area and that is manned during navigation of the vessel or during cargo transfer operations, except the deckhouse roof if it is 2.4 m (8 ft.) or higher above the cargo containing structure.
                [CGD 74-289, 44 FR 26009, May 3, 1979; 44 FR 59234, Oct. 15, 1979]

                § 154.1115
                Discharge.

                (a) The discharge density of each water spray system must be at least:

                (1) 10000 cm3/m2/min. (0.25 gpm/ft.2) over each horizontal surface; and
                (2) 4000 cm3/m2/min. (0.10 gpm/ft.2) against vertical surface, including the water rundown.
                (b) The water spray protection under § 154.1110 (d) and (e) must cover an area in a horizontal plane extending at least 0.5 m (19 in.) in each direction from the pipes, fittings, and valves, or the area of the drip tray, whichever is greater.

                § 154.1120
                Nozzles.
                (a) Nozzles for the water spray system must be spaced to provide the minimum discharge density under § 154.1115 in each part of the protected area.
                (b) The vertical distance between water spray nozzles for the protection of vertical surfaces must be 3.7 m (12 ft.) or less.

                § 154.1125
                Pipes, fittings, and valves.
                (a) Each pipe, fitting, and valve for each water spray system must meet Part 56 of this chapter.
                (b) Each water spray main that protects more than one area listed in § 154.1110 must have at least one isolation valve at each branch connection and at least one isolation valve downstream of each branch connection to isolate damaged sections.
                (c) Each valved cross-connection from the water spray system to the fire main must be outside of the cargo area.
                (d) Each pipe, fitting, and valve for the water spray system must be made of fire resistant and corrosion resistant materials, such as galvanized steel or galvanized iron pipe.
                (e) Each water spray system must have a means of drainage to prevent corrosion of the system and freezing of accumulated water in subfreezing temperatures.
                (f) Each water spray system must have a dirt strainer that is located at the water spray system manifold or pump.

                § 154.1130
                Sections.
                (a) If a water spray system is divided into sections, each section must at least include the entire deck area bounded by the length of a cargo tank and the full beam of the vessel.
                (b) If a water spray system is divided into sections, the control valves must be at a single manifold that is aft of the cargo area.

                § 154.1135
                Pumps.
                (a) Water to the water spray system must be supplied by:
                (1) A pump that is only for the use of the system;
                (2) A fire pump; or
                (3) A pump specially approved by the Commandant (CG-OES).
                (b) Operation of a water spray system must not interfere with simultaneous operation of the fire main system at its required capacity. There must be a valved cross-connection between the two systems.
                (c) Except as allowed under paragraph (d) of this section, each pump for each water spray system must have the capacity to simultaneously supply all areas named in § 154.1110.
                (d) If the water spray system is divided into sections, the pump under paragraph (a) of this section must have the capacity to simultaneously supply the required discharge density under § 154.1115(a) for:
                (1) The areas in §§ 154.1110(f) through (h) and 154.1115(b); and
                (2) The largest section that includes the required protection under § 154.1110 (a), (b), and (c).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

              Firefighting System: Dry Chemical

                § 154.1140
                Dry chemical system: General.
                Each liquefied flammable gas carrier must have a dry chemical firefighting system that meets §§ 154.1145 through 154.1170, Part 56 and Subpart 162.039 of this chapter.

                § 154.1145
                Dry chemical supply.
                (a) A vessel with a cargo carrying capacity less that 1000 m3 (35,300 ft.3) must have at least one self-contained dry chemical storage unit for the cargo area with an independent inert gas pressurizing source adjacent to each unit.

                (b) A vessel with a cargo carrying capacity of 1000 m3 (35,300 ft.3) or more must have at least two self-contained dry chemical storage units for the cargo area with an independent inert gas pressurizing source adjacent to each unit.
                (c) A vessel with bow and stern loading and discharge areas must have at least one self-contained dry chemical storage unit with an independent inert gas pressurizing source adjacent to the unit for each area.
                (d) Each dry chemical storage unit and associated piping must be designed for:
                (1) Sequential discharge of each hose line and each monitor for 45 seconds; and
                (2) Simultaneous discharge of all hose lines and monitors for 45 seconds.
                (e) Each fully charged dry chemical storage unit must have the greater of the following:
                (1) Enough dry chemical to provide for sequential discharge of each attached hose and monitor for 45 seconds.
                (2) Enough dry chemical to provide for simultaneous discharge of all attached hoses and monitors for 45 seconds.

                § 154.1150
                Distribution of dry chemical.
                (a) All locations on the above deck cargo area and the cargo piping outside that cargo area must be protected by:
                (1) At least two dry chemical hand hose lines; or
                (2) At least one dry chemical hand hose line and one dry chemical monitor.
                (b) At least one dry chemical storage unit and hand hose line or monitor must be at the after end of the cargo areas.
                (c) Each cargo loading and discharge manifold must be protected by at least one dry chemical monitor.

                § 154.1155
                Hand hose line: Coverage.
                The coverage for the area for a hand hose line under § 154.1150 must not exceed the length of the hand hose line except the coverage for the protection of areas that are inaccessible to personnel must not exceed one-half the projection of the hose at its rated discharge, or 10 m (32.8 ft.), whichever is less.

                § 154.1160
                Monitor coverage of system.
                The coverage of each dry chemical system monitor under § 154.1150 must not exceed:
                (a) 10 m (32.8 ft.) at 10 kg/sec (22 lb/sec);
                (b) 30 m (98.4 ft.) at 25 kg/sec (55 lb/sec);
                (c) 40 m (131.2 ft.) at 45 kg/sec (99 lb/sec);
                (d) An interpolation between 10 m (32.8 ft.) at 10 kg/sec (22 lb/sec) and 30 m (98.4 ft.) at 25 kg/sec (55 lb/sec); or
                (e) An interpolation between 30 m (98.4 ft.) at 25 kg/sec (55 lb/sec) and 40 m (131.2 ft.) at 45 kg/sec (99 lb/sec).

                § 154.1165
                Controls.
                (a) Each dry chemical hand hose line must be one that can be actuated at its hose reel or hose storage cabinet.
                (b) Each dry chemical monitor must be one that can be actuated and controlled at the monitor.
                (c) A dry chemical monitor for the cargo loading and discharging manifold areas must be one that can be:
                (1) Actuated from a location other than the monitor and manifold area; and
                (2) Except for pre-aimed monitors, controlled from a location other than the monitor and manifold area.
                (d) Each dry chemical storage unit must have independent piping with a stop valve in the piping for each remote hand hose line and remote monitor where the piping connects to the storage container, if the unit has:
                (1) More than one hand hose line;
                (2) More than one monitor; or
                (3) A combination of hand hose lines and monitors.
                (e) Each stop valve under paragraph (d) of the section must be capable of:
                (1) Manual operation; and
                (2) Being opened from the hose reel or monitor to which it is connected.
                (f) Damage to any dry chemical system hose, monitor, pipe or control circuits must not prevent the operation of other hoses, monitors, or control circuit that are connected to the same storage unit.

                § 154.1170
                Hand hose line: General.
                Each dry chemical hand hose line must:
                (a) Not be longer than 33m (108 ft.);

                (b) Be stored on a hose reel or in a hose cabinet and be one that is operable whether or not it is unwound from a hose reel or removed from a hose cabinet;
                (c) Be non-kinkable;
                (d) Have a nozzle with a valve to start and stop the flow of chemical;
                (e) Have a capacity of at least 3.5 kg/sec (7.7 lb./sec); and
                (f) Be one that can be operated by one person.

              Cargo Area: Mechanical Ventilation System

                § 154.1200
                Mechanical ventilation system: General.
                (a) Each cargo compressor room, pump room, gas-dangerous cargo control station, and space that contains cargo handling equipment must have a fixed, exhaust-type mechanical ventilation system.
                (b) The following must have a supply-type mechanical ventilation system:
                (1) Each space that contains electric motors for cargo handling equipment.
                (2) Each gas-safe cargo control station in the cargo area.
                (3) Each gas-safe space in the cargo area.
                (4) Each space that contains inert gas generators, except main machinery spaces.

                § 154.1205
                Mechanical ventilation system: Standards.
                (a) Each exhaust type mechanical ventilation system required under § 154.1200 (a) must have ducts for vapors from the following:
                (1) The deck level.
                (2) Bilges.
                (3) If the vapors are lighter than air, the top of each space that personnel enter during cargo handling operations.
                (b) The discharge end of each duct under paragraph (a) of this section must be at least 10 m (32.8 ft.) from ventilation intakes and openings to accommodations, service, control station, and other gas-safe spaces.
                (c) Each ventilation system under § 154.1200 (a) and (b)(1) must change the air in that space and its adjoining trunks at least 30 times each hour.
                (d) Each ventilation system for a gas-safe cargo control station in the cargo area must change the air in that space at least eight times each hour.
                (e) A ventilation system must not recycle vapor from ventilation discharges.
                (f) Each mechanical ventilation system must have its operational controls outside the ventilated space.
                (g) No ventilation duct for a gas-dangerous space may pass through any machinery, accommodation, service, or control space, except as allowed under § 154.703.
                (h) Each electric motor that drives a ventilation fan must not be within the ducts for any space that may contain flammable cargo vapors.
                (i) Ventilation impellers and the housing in way of those impellers on a flammable cargo carrier must meet one of the following:
                (1) The impeller, housing, or both made of non-metallic material that does not generate static electricity.
                (2) The impeller and housing made of non-ferrous material.
                (3) The impeller and housing made of austenitic stainless steel.
                (4) The impeller and housing made of ferrous material with at least 13mm (0.512 in.) tip clearance.
                (j) No ventilation fan may have any combination of fixed or rotating components made of an aluminum or magnesium alloy and ferrous fixed or rotating components.
                (k) Each ventilation intake and exhaust must have a protective metal screen of not more than 13mm (0.512 in.) square mesh.

                § 154.1210
                Hold space, void space, cofferdam, and spaces containing cargo piping.
                (a) Each hold space, void space, cofferdam, and spaces containing cargo piping must have:
                (1) A fixed mechanical ventilation system; or
                (2) A fixed ducting system that has a portable blower that meets § 154.1205(i) and (j).
                (b) A portable blower in any personnel access opening must not reduce the area of that opening so that the opening does not meet § 154.340.

              Instrumentation

                § 154.1300
                Liquid level gauging system: General.
                (a) If Table 4 lists a closed gauge for a cargo, the liquid level gauging system under § 154.1305 must be closed gauges that do not have any opening through which cargo liquid or vapor could escape, such as an ultrasonic device, float type device, electronic or magnetic probe, or bubble tube indicator.
                (b) If Table 4 lists a restricted gauge for a cargo, the liquid level gauging system under § 154.1305 must be closed gauges that meet paragraph (a) of this section or restricted gauges that do not vent the cargo tank's vapor space, such as a fixed tube, slip tube, or rotary tube.

                § 154.1305
                Liquid level gauging system: Standards.
                (a) Each cargo tank must have at least one liquid level gauging system that is operable:
                (1) At pressures up to, and including, the MARVS of the tank; and
                (2) At temperatures that are within the cargo handling temperature range for all cargoes carried.
                (b) Unless the cargo tank has one liquid gauging system that can be repaired and maintained when the tank contains cargo, each cargo tank must have at least two liquid level gauging systems that meet paragraph (a) of this section.
                (c) Each liquid level gauging system must measure liquid levels from 400 mm (16 in.) or less from the lowest point in the cargo tank, except collection wells, to 100 percent full.

                § 154.1310
                Closed gauge shut-off valve.
                Each closed gauge that is not mounted directly on the cargo tank must have a shut-off valve that is as close to the tank as practical.

                § 154.1315
                Restricted gauge excess flow valve.
                Each restricted gauge that penetrates a cargo tank must have an excess flow valve unless the gauge meets § 154.536.

                § 154.1320
                Sighting ports, tubular gauge glasses, and flat plate type gauge glasses.
                (a) Cargo tanks may have sighting ports as a secondary means of liquid level gauging in addition to the gauges under § 154.1305, if:
                (1) The tank has a MARVS that is less than 69 kPa gauge (10 psig);
                (2) The port has a protective cover and an internal scale; and
                (3) The port is above the liquid level.
                (b) Tubular gauge glasses must not be liquid level gauges for cargo tanks.
                (c) Plate type gauge glasses must not be liquid level gauges for cargo tanks, except deck tanks if the gauge connections have excess flow valves.

                § 154.1325
                Liquid level alarm system: All cargo tanks.
                Except as allowed under § 154.1330, each cargo tank must have a high liquid level alarm system that:
                (a) Is independent of the liquid level gauging system under § 154.1305;
                (b) Actuates quick-closing valves under §§ 154.530, 154.532, and 154,538 or a stop valve in the cargo tank loading line to prevent the tank from becoming 100 percent liquid full and without causing the pressure in the loading lines to exceed the design pressure; and
                (c) Actuates an audible and visual alarm at the cargo control station at the liquid level at which the valves under paragraph (b) of this section are actuated or at some lower liquid level.

                § 154.1330
                Liquid level alarm system: Independent tank type C.
                Independent tanks type C need not have the high liquid level alarm system under § 154.1325 if:
                (a) The tank volume is less than 200 m3 (7,060 ft.3); or
                (b) The tank can withstand the maximum possible pressure during loading, that pressure is below the relief valve setting, and overflow of the tank cannot occur.

                § 154.1335
                Pressure and vacuum protection.
                (a) Each cargo tank must have the following:
                (1) A pressure gauge that:
                (i) Monitors the vapor space;
                (ii) Is readable at the tank; and

                (iii) Has remote readouts at the cargo control station.
                (2) If vacuum protection is required under § 154.804, a vacuum gauge meeting paragraphs (a)(1)(i), (a)(1)(ii), and (a)(1)(iii) of this section.
                (b) The vessel must have at least one high pressure alarm that:
                (1) Actuates before the pressure in any cargo tank exceeds the maximum pressure specially approved by the Commandant (CG-OES); and
                (2) Actuates an audible and visual alarm at the cargo control station, and a remote group alarm in the wheelhouse.
                (c) If vacuum protection is required under § 154.804, the vessel must have at least one low pressure alarm that:
                (1) Actuates before the pressure in any cargo tank falls below the minimum pressure specially approved by the Commandant (CG-522); and
                (2) Actuates an audible and visual alarm at the cargo control station, and a remote group alarm in the wheelhouse.
                (d) At least one pressure gauge must be fitted on each:
                (1) Enclosed hold;
                (2) Enclosed interbarrier space;
                (3) Cargo pump discharge line;
                (4) Liquid cargo manifold; and
                (5) Vapor cargo manifold.
                (e) There must be a local manifold pressure gauge between each manifold stop valve and each hose connection to the shore.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.1340
                Temperature measuring devices.
                (a) Each cargo tank must have devices that measure the temperature:
                (1) At the bottom of the tank; and
                (2) Near the top of the tank and below the maximum liquid level allowed under § 154.1844.
                (b) Each device required by paragraph (a) must have a readout at the cargo control station.
                (c) Except for independent tanks type C, each cargo containment system for a design temperature colder than −55 °C (−67 °F) must have temperature measuring devices that meet the following:
                (1) The number and location of the devices must be specially approved by the Commandant (CG-OES).
                (2) The devices must be within the cargo tank's insulation or on the adjacent hull structure.
                (3) Each device must show the temperature continuously or at regular intervals of one hour or less.
                (4) Each device must actuate an audible and visual alarm at the cargo control station and a remote group alarm in the wheelhouse before the temperature of the steel of the adjacent hull structure is cooled below the lowest temperature allowed for the steel under § 154.172.
                (d) For each cargo tank with a design temperature colder than −55 °C (−67 °F), the number and arrangement of the devices that show the temperature of the tank during cool down procedures must be specially approved by the Commandant (CG-OES).
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.1345
                Gas detection.
                (a) Each vessel carrying a cargo that is designated with an “I” or “I and T” in Table 4 must have:
                (1) A fixed flammable gas detection system that meets § 154.1350; and
                (2) Two portable gas detectors that can each measure 0 to 100% of the lower flammable limit of the cargo carried.
                (b) Each vessel carrying a cargo that is designated with a “T” or “I and T” in Table 4 must have:
                (1) Two portable gas detectors that show if the concentration of cargo is above or below the threshold limit value listed in 29 CFR 1910.1000 for that cargo; and
                (2) Fixed gas sampling tubes in each hold space and interbarrier space with:
                (i) The number of tubes specially approved by the Commandant (CG-OES);
                (ii) Each tube valved and capped above the main deck unless it is connected to a fixed toxic gas detector;
                (iii) If the vessel carries cargo that is heavier than the atmosphere of the space, each tube's open end in the lower part of the space;

                (iv) If the vessel carries cargo that is lighter than the atmosphere of the space, each tube's open end in the upper part of the space;
                (v) If the vessel carries cargo that is heavier than the atmosphere of the space and another cargo that is lighter than the atmosphere of the space, tubes with their open ends in the lower part of the space and tubes with their open ends in the upper part of the space; and
                (vi) If the vessel carries cargo that can be both heavier and lighter than the atmosphere of the space, tubes with their open ends in the lower part of the space and tubes with their open ends in the upper part of the space.
                (c) A vessel that carries methyl bromide or sulfur dioxide must have a fixed gas detection system that is not located in a gas-safe space.
                (d) A vessel that carries sulfur dioxide must have a fixed gas detection system that meets § 154.1350 except paragraph (j).
                (e) Each alarm under § 154.1350(e) on a vessel that carries methyl bromide or sulfur dioxide must be set at or below the threshold limit value listed in 29 CFR 1910.1000 for the cargo carried.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

                § 154.1350
                Flammable gas detection system.
                (a) The vessel must have a fixed flammable gas detection system that has sampling points in:
                (1) Each cargo pump room;
                (2) Each cargo compressor room;
                (3) Each motor room for cargo handling machinery;
                (4) Each cargo control station that is not gas-safe;
                (5) Each hold space, interbarrier space, and other enclosed spaces, except fuel oil or ballast tanks, in the cargo area, unless the vessel has independent tanks type C; and
                (6) Each space between the doors of an air lock under § 154.345.
                (b) The sampling points under paragraph (a) of this section must meet § 154.1345(b)(2) (iii) through (vi).
                (c) Gas sampling lines for the flammable gas detection system must not pass through any gas-safe space, except the gas-safe space in which the gas detection equipment is located.
                (d) Gas detection systems must have a readout with meters that show flammable gas concentration over the concentration or volume ranges under paragraph (t) or (u) of this section.
                (e) Each flammable gas detection system must have audible and visual alarms that are actuated at a cargo concentration that is 30% or less of the lower flammable limit in air of the cargo carried.
                (f) Each flammable gas detection system must have an audible and visual alarm for power failure and loss of gas sampling flow.
                (g) The alarms under paragraphs (e) and (f) of this section must signal in the space where the gas detection system's readout is located and must meet § 154.1365.
                (h) Remote group alarms, that indicate that one of the alarm conditions under paragraphs (e) and (f) of this section exists, must meet § 154.1365 and must be in each wheelhouse and in each cargo control station if the gas detection system's readout is not located in those spaces.
                (i) Each flammable gas detection system must monitor each sampling point at 30 minute or shorter intervals.
                (j) Electrical equipment for each flammable gas detection system that is in a gas-dangerous space or area must meet §§ 154.1000 through 154.1015.
                (k) Each flammable gas detection system must have enough flame arrestors for all gas sampling lines to prevent flame propagation to the spaces served by the system through the sampling lines.
                (l) Each flammable gas detection system must have a filter that removes particulate matter in each gas sampling line.
                (m) Each filter under paragraph (l) of this section must be located where it can be removed during vessel operation, unless it can be freed by back pressure.
                (n) Each flammable gas detection system in a gas-safe space must:
                (1) Have a shut-off valve in each sampling line from an enclosed space, such as a hold or interbarrier space; and

                (2) Exhaust gas to a safe location in the open atmosphere and away from all ignition sources.

                (o) Each flammable gas detection system must not have common sampling lines, except sampling lines may be manifolded at the gas detector location if each line has an automatic valve that prevents cross-communication between sampling points.
                (p) Each flammable gas detection system must have at least one connection for injecting zero gas and span gas into the system for testing and calibration.
                (q) Each flammable gas detection system must have span gas for testing and calibration that is of known concentration.
                (r) The calibration test procedure and type and concentration of span gas under paragraph (q) of this section must be on or in each gas analyzer cabinet.
                (s) Each flammable gas detection system must have at least one flow meter capable of measuring the flow to the gas analyzer, and must provide a means for ensuring that there is a positive flow in the right direction in each sampling line at all times.
                (t) Each flammable gas detection system must measure gas concentrations that:
                (1) Are at least 0% through 200% of the alarm concentration; and
                (2) Allow calibration of the equipment with span gas.
                (u) In each hold and each interbarrier space that contains tanks other than independent tanks type A, B, or C, the flammable gas detection system must measure cargo concentrations of 0 to 100% by volume with:
                (1) An analyzer other than the one under paragraph (t) of this section; or
                (2) The analyzer under paragraph (t) of this section with a scale switch that automatically returns the analyzer to the concentration range under paragraph (t) of this section when released.

                § 154.1360
                Oxygen analyzer.
                The vessel must have a portable analyzer that measures oxygen levels in an inert atmosphere.

                § 154.1365
                Audible and visual alarms.
                (a) Each audible alarm must have an arrangement that allows it to be turned off after sounding. For remote group alarms this arrangement must not interrupt the alarm's actuation by other faults.
                (b) Each visual alarm must be one that can be turned off only after the fault that actuated it is corrected.
                (c) Each visual alarm must be marked to show the type and, except for remote group alarms, the location of each fault that actuates it.
                (d) Each vessel must have means for testing each alarm.

                § 154.1370
                Pressure gauge and vacuum gauge marking.
                Each pressure gauge and vacuum gauge under § 154.1335(a) must be marked with the maximum and minimum pressures that are specified on the vessel's certificate for the cargo carried.

                § 154.1375
                Readout for temperature measuring device: Marking.
                Each readout under § 154.1340 for a device that measures temperature in a cargo tank must be marked with the design temperature specified for the cargo tank on the vessel's certificate.

              Safety Equipment

                § 154.1400
                Safety equipment: All vessels.
                (a) Instead of the equipment under § 35.30-20 of this chapter, a vessel of less than 25,000 m3 cargo capacity must have the following personnel safety equipment:
                (1) Six self-contained, pressure-demand-type, air-breathing apparatus approved by the Mining Enforcement and Safety Administration (MESA) or the National Institute for Occupational Safety and Health (NIOSH), each having at least a 30 minute capacity.
                (2) Nine spare bottles of air for the self-contained air-breathing apparatus, each having at least a 30 minute capacity.
                (3) Six steel-cored lifelines.
                (4) Six Type II or Type III flashlights constructed and marked in accordance with ASTM F 1014 (incorporated by reference, see § 154.1).
                (5) Three fire axes.

                (6) Six helmets that meet ANSI Safety Requirements for Industrial Head Protection, Z-89.1 (1969).

                (7) Six sets of boots and gloves that are made of rubber or other electrically non-conductive material.
                (8) Six sets of goggles that meet the specifications of ANSI Practice for Occupational and Educational Eye and Face Protection, Z-87.1 (1979).
                (9) Three outfits that protect the skin from scalding steam and the heat of a fire, and that have a water resistant outer surface.
                (10) Three chemical protective outfits that protect the wearers from the particular personnel hazards presented by the cargo vapor.
                (b) Instead of the equipment under § 35.30-20 of this chapter, a vessel of 25,000 m3 cargo capacity or more must have the following personnel safety equipment:
                (1) Eight self-contained, pressure-demand-type, air-breathing apparatus approved by the Mining Enforcement and Safety Administration (MESA) or the National Institute for Occupational Safety and Health (NIOSH), each having at least a 30 minute capacity.
                (2) Nine spare bottles of air for the self-contained air-breathing apparatus, each having at least a 30 minute capacity.
                (3) Eight steel-cored lifelines.
                (4) Eight Type II or Type III flashlights constructed and marked in accordance with ASTM F 1014 (incorporated by reference, see § 154.1).
                (5) Three fire axes.
                (6) Eight helmets that meet ANSI Safety Requirements for Industrial Head Protection, Z-89.1 (1969).
                (7) Eight sets of boots and gloves that are made of rubber or other electrically non-conductive material.
                (8) Eight sets of goggles that meet the specifications of ANSI Practice for Occupational and Educational Eye and Face Protection, Z-87.1 (1979).
                (9) Five outfits that protect the skin from scalding steam and the heat of a fire, and that have a water resistant outer surface.
                (10) Three chemical protective outfits that protect the wearers from the particular personnel hazards presented by the cargo vapor.
                (c) When Table 4 references this section, a vessel carrying the listed cargo must have the following additional personnel protection equipment:
                (1) Three self-contained, pressure-demand-type, air-breathing apparatus approved by the Mining Enforcement and Safety Administration (MESA) or the National Institute for Occupational Safety and Health (NIOSH), each having at least a 30 minute capacity.
                (2) Nine spare bottles of air for the self-contained air-breathing apparatus, each having at least a 30 minute capacity.
                (3) Three steel-cored lifelines.
                (4) Three Type II or Type III flashlights constructed and marked in accordance with ASTM F 1014 (incorporated by reference, see § 154.1).
                (5) Three helmets that meet ANSI Safety Requirements for Industrial Head Protection, Z-89.1 (1969).
                (6) Three sets of boots and gloves that are made of rubber or other electrically non-conductive material.
                (7) Three sets of goggles that meet the specifications of ANSI Practice for Occupational and Educational Eye and Face Protection, Z-87.1 (1979).
                (8) Three chemical protective outfits that protect the wearers from the particular personnel hazards presented by the cargo vapor.
                [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 77-069, 52 FR 31630, Aug. 21, 1987; CGD 82-042, 17705, May 18, 1988; USCG-1999-5151, 64 FR 67183, Dec. 1, 1999]

                § 154.1405
                Respiratory protection.
                When Table 4 references this section, a vessel carrying the listed cargo must have:
                (a) Respiratory protection equipment for each person on board that protects the person from the cargo vapor for at least 5 minutes; and
                (b) Two additional sets of respiratory protection equipment that:
                (1) Are stowed in the wheelhouse; and
                (2) Protects the wearer from the cargo vapor for at least 5 minutes.

                § 154.1410
                Decontamination shower.
                When Table 4 references this section, a vessel carrying the listed cargo must have a decontamination shower and an eye wash that:
                (a) Are on the weatherdeck; and
                (b) Have their location marked EMERGENCY SHOWER in letters:
                (1) 7.6 cm (3 in.) high; and
                (2) 5.1 cm (2 in.) wide.

                § 154.1415
                Air compressor.
                Each vessel must have an air compressor to recharge the bottles for the air-breathing apparatus.

                § 154.1420
                Stretchers and equipment.
                Each vessel must have:
                (a) Two stretchers or wire baskets; and
                (b) Equipment for lifting an injured person from a cargo tank, hold, or void space.

                § 154.1430
                Equipment locker.
                One of each item of equipment under §§ 154.1400 and 154.1420 must be stowed in a marked locker:
                (a) On the open deck in or adjacent to the cargo area; or
                (b) In the accommodation house, near to a door that opens onto the main deck.

                § 154.1435
                Medical first aid guide.
                Each vessel must have a copy of the IMO Medical First Aid Guide for Use in Accidents Involving Dangerous Goods, printed by IMO, London, U.K.

                § 154.1440
                Antidotes.

                Each vessel must have the antidotes prescribed in the IMO Medical First Aid Guide for Use in Accidents Involving Dangerous Goods, printed by IMO, London, U.K. for the cargoes being carried.

            Subpart D—Special Design and Operating Requirements

              § 154.1700
              Purpose.
              This subpart prescribes design and operating requirements that are unique for certain cargoes regulated by this part.

              § 154.1702
              Materials of construction.
              When Table 4 references one of the following paragraphs in this section, the materials in the referenced paragraph must not be in components that contact the cargo liquid or vapor:
              (a) Aluminum and aluminum bearing alloys.
              (b) Copper and copper bearing alloys.
              (c) Zinc or galvanized steel.
              (d) Magnesium.
              (e) Mercury.
              (f) Acetylide forming materials, such as copper, silver, and mercury.

              § 154.1705
              Independent tank type C.
              The following cargoes must be carried in an independent tank type C that meets § 154.701(a):
              (a) Ethylene oxide.
              (b) Methyl bromide.
              (c) Sulfur dioxide.

              § 154.1710
              Exclusion of air from cargo tank vapor spaces.
              When a vessel is carrying acetaldehyde, butadiene, ethylene oxide, or vinyl chloride, the master shall ensure that air is:
              (a) Purged from the cargo tanks and associated piping before the cargo is loaded; and
              (b) Excluded after the cargo is loaded by maintaining a positive pressure of at least 13.8 kPa gauge (2 psig) by:
              (1) Introducing a gas that:
              (i) Is not reactive;
              (ii) Is not flammable; and
              (iii) Does not contain more than 0.2% oxygen by volume; or
              (2) Controlling the cargo temperature.

              § 154.1715
              Moisture control.
              When a vessel is carrying sulfur dioxide, the master shall ensure that:
              (a) A cargo tank is dry before it is loaded with sulfur dioxide; and
              (b) Air or inert gas admitted into a cargo tank carrying sulfur dioxide during discharging or tank breathing has a moisture content equal to or less than the moisture content of air with a dew point of −45 °C (−49 °F) at atmospheric pressure.
              [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by USCG-2014-0688, 79 FR 58285, Sept. 29, 2014]

              § 154.1720
              Indirect refrigeration.
              A refrigeration system that is used to cool acetaldehyde, ethylene oxide, or methyl bromide, must be an indirect refrigeration system that does not use vapor compression.

              § 154.1725
              Ethylene oxide.
              (a) A vessel carrying ethylene oxide must:

              (1) Have cargo piping, vent piping, and refrigeration equipment that have no connections to other systems;
              (2) Have valves, flanges, fittings, and accessory equipment made of steel, stainless steel, except types 416 and 442, or other material specially approved by the Commandant (CG-OES);
              (3) Have valve disk faces, and other wearing parts of valves made of stainless steel containing not less than 11% chromium;
              (4) Have gaskets constructed of spirally wound stainless steel with Teflon or other material specially approved by the Commandant (CG-OES);
              (5) Not have asbestos, rubber, or cast iron components in the cargo containment system and piping;
              (6) Not have threaded joints in cargo piping;
              (7) Have a water spray system under § 154.1105 that protects the above deck cargo piping; and
              (8) Have a nitrogen inerting system or on board nitrogen gas storage that can inert the vapor space of an ethylene oxide cargo tank for a period of 30 days under the condition of paragraph (e) of this section.
              (b) Cargo hose used for ethylene oxide must:
              (1) Be specially approved by the Commandant (CG-OES); and
              (2) Be marked “For (Alkylene or Ethylene) Oxide Transfer Only.”
              (c) Ethylene oxide must be maintained at less than 30 °C (86 °F).
              (d) Cargo tank relief valves for tanks containing ethylene oxide must be set at 539 kPa gauge (78.2 psig) or higher.
              (e) The vapor space of a cargo tank carrying ethylene oxide must be maintained at a nitrogen concentration of 45% by volume.
              (f) A vessel must have a method for jettisoning ethylene oxide that meets §§ 154.356 and 154.1872.
              [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983; USCG-2014-0688, 79 FR 58285, Sept. 29, 2014]

              § 154.1730
              Ethylene oxide: Loading and off loading.
              (a) The master shall ensure that before ethylene oxide is loaded into a cargo tank:
              (1) The tank is thoroughly clean, dry, and free of rust;
              (2) The hold spaces are inerted with an inert gas that meets § 154.1710(b)(1); and
              (3) The cargo tank vapor space is inerted with nitrogen.
              (b) Ethylene oxide must be off loaded by a deepwell pump or inert gas displacement.
              (c) Ethylene oxide must not be carried in deck tanks.

              § 154.1735
              Methyl acetylene-propadiene mixture.
              (a) The composition of the methyl acetylene-propadiene mixture at loading must be within the following limits or specially approved by the Commandant (CG-OES):
              (1) One composition is:
              (i) Maximum methyl acetylene and propadiene molar ratio of 3 to 1;
              (ii) Maximum combined concentration of methyl acetylene and propadiene of 65 mole percent;
              (iii) Minimum combined concentration of propane, butane, and isobutane of 24 mole percent, of which at least one-third (on a molar basis) must be butanes and one-third propane; and
              (iv) Maximum combined concentration of propylene and butadiene of 10 mole percent.
              (2) A second composition is:
              (i) Maximum methyl acetylene and propadiene combined concentration of 30 mole percent;
              (ii) Maximum methyl acetylene concentration of 20 mole percent;
              (iii) Maximum propadiene concentration of 20 mole percent;
              (iv) Maximum propylene concentration of 45 mole percent;
              (v) Maximum butadiene and butylenes combined concentration of 2 mole percent;
              (vi) A minimum saturated C 4 hydrocarbon concentration of 4 mole percent; and
              (vii) A minimum propane concentration of 25 mole percent.
              (b) A vessel carrying a methyl acetylene-propadiene mixture must have a refrigeration system without vapor compression or have a refrigeration system with the following features:

              (1) A vapor compressor that does not raise the temperature and pressure of the vapor above 60 °C (140 °F) and 1.72 MPa gauge (250 psig) during its operation and that does not allow vapor to stagnate in the compressor while it continues to run.
              (2) Discharge piping from each compressor stage or each cylinder in the same stage of a reciprocating compressor that has:
              (i) Two temperature actuated shutdown switches set to operate at 60 °C (140 °F) or less;
              (ii) A pressure actuated shutdown switch set to operate at 1.72 MPa gauge (250 psig) or less; and
              (iii) A safety relief valve set to relieve at 1.77 MPa gauge (256 psig) or less.
              (3) A relief valve that vents to a mast meeting § 154.805 and that does not relieve into the compressor suction line.
              (4) An alarm that sounds in the cargo control station and in the wheelhouse when any of the high pressure or high temperature switches under paragraphs (b)(2)(i) and (b)(2)(ii) of this section operate.
              (c) A vessel carrying a methyl acetylene-propadiene mixture must have separate cargo piping, vent piping, and refrigeration equipment for methyl acetylene-propadiene that are segregated from other cargo piping, vent piping and refrigeration equipment on the vessel.
              [CGD 74-289, 44 FR 26009, May 3, 1979; 44 FR 59234, Oct. 15, 1979; CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

              § 154.1740
              Vinyl chloride: Inhibiting and inerting.
              When a vessel is carrying vinyl chloride, the master shall ensure that:
              (a) Section 154.1818 is met; or
              (b) Section 154.1710 is met, and the oxygen content of inert gas is less than 0.1% by volume.

              § 154.1745
              Vinyl chloride: Transferring operations.
              A vessel carrying vinyl chloride must meet the requirements of § 151.50-34(g) through (k) of this chapter.
              [CGD 95-012, 60 FR 48051, Sept. 18, 1995]

              § 154.1750
              Butadiene or vinyl chloride: Refrigeration system.
              A refrigeration system for butadiene or vinyl chloride must not use vapor compression unless it:
              (a) Avoids any stagnation points where uninhibited liquid can accumulate; or
              (b) Has inhibited liquid from the cargo tank added to the vapor upstream of the condenser.

              § 154.1755
              Nitrogen.
              Except for deck tanks and their piping systems, cargo containment systems and piping systems carrying nitrogen must be specially approved by the Commandant (CG-OES).
              [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

              § 154.1760
              Liquid ammonia.
              The master shall ensure that no person sprays liquid ammonia into a cargo tank containing more than 8% oxygen by volume.

            Subpart E—Operations

              § 154.1800
              Special operating requirements under Part 35 of this chapter.
              Each vessel must meet the requirements of Part 35 of this chapter except § 35.30-20.

              § 154.1801
              Certificates, letters, and endorsements: U.S. flag vessels.
              No person may operate a U.S. flag vessel unless the vessel has a Certificate of Inspection, issued under Subchapter D of this chapter, which is endorsed with the name of the cargo that it is allowed to carry.

              § 154.1802
              Certificates, letters and endorsements: Foreign flag vessels.
              (a) No person may operate on the navigable waters of the United States a foreign flag vessel, whose flag administration issues IMO Certificates, unless the vessel has:

              (1) An IMO Certificate issued by the flag administration that is endorsed with the name of the cargo that it is allowed to carry, and, except when entering United States waters to be examined as required by § 154.150, a Certificate of Compliance 1 issued by the Coast Guard endorsed under this part with the name of the cargo that it is allowed to carry; or
              (2) Special approval under § 154.30.
              (b) No person may operate on the navigable waters of the United States a foreign flag vessel, whose flag administration does not issue IMO Certificates, unless the vessel has:
              (1) Except when entering United States waters to be examined as required by § 154.150, a Certificate of Compliance 1
                 issued by the Coast Guard endorsed under this part with the name of the cargo it is allowed to carry; or

                  1 Until the Certificate of Compliance form is developed, the Letter of Compliance with a Subchapter O endorsement for the carriage of liquefied gases will serve the purpose of the endorsed Certificate of Compliance.

              (2) Special approval under § 154.30.
              (c) No person may operate on the navigable waters of the United States a foreign flag vessel unless the vessel has onboard the following plans and information which except for the certificates under paragraph (c)(1) of this section, are in English:
              (1) The vessel's Cargo Ship Safety Construction Certificate and Cargo Ship Safety Equipment Certificate issued under the International Convention for Safety of Life at Sea, 1974.
              (2) A description and schematic plan of the arrangement for inerting cargo tanks, hold spaces, and interbarrier spaces.
              (3) A description of the cargo tank gauging equipment.
              (4) A description and instruction manual for the calibration of the cargo leak detector equipment.
              (5) A schematic plan that shows the locations of leak detectors and sampling points.
              (6) If the vessel carries methane, a description of the systems for cargo temperature and pressure control. (See §§ 154.703 through 154.709).
              [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 81-052, 50 FR 8735, Mar. 5, 1985; CGD 77-069, 52 FR 31631, Aug. 21, 1987; CGD 90-008, 55 FR 30663, July 26, 1990]

              § 154.1803
              Expiration of Certificates of Compliance.
              (a) A Certificate of Compliance expires after a period not to exceed twenty-four months from the date of the examination under § 154.150.
              (b) If a vessel's IMO Certificate of Fitness expires or otherwise becomes invalid, its Certificate of Compliance becomes invalid for the carriage of cargoes listed in Table 4 of this part or authorized by special approval under § 154.12. To maintain the validity of the Certificate of Compliance, the vessel's owner must submit a copy of any revised or reissued IMO Certificate to Commanding Officer, Marine Safety Center.
              [CGD 81-052, 50 FR 8735, Mar. 5, 1985; CGD 95-072, 60 FR 50466, Sept. 29, 1995; 60 FR 54106, Oct. 19, 1995]

              § 154.1804
              Document posted in wheelhouse.
              No person may operate a U.S. flag vessel unless the documents under § 154.1801 are under glass in a conspicuous place in the wheelhouse.

              § 154.1806
              Regulations on board.
              No person may operate a U.S. flag vessel unless a copy of this part and a copy of Part 35 of this chapter are on board.

              § 154.1808
              Limitations in the endorsement.
              No person may operate a vessel unless that person complies with all limitations in the endorsement on the vessel's Certificate of Inspection or Certificate of Compliance.
              [CGD 81-052, 50 FR 8735, Mar. 5, 1985]

              § 154.1809
              Loading and stability manual.
              (a) No person may operate a vessel unless that vessel has on board a loading and stability manual.
              (b) The loading and stability manual must contain:

              (1) Information that enables the master to load and ballast the vessel while keeping structural stresses within design limits; and

              (2) The information required by § 170.110 of this chapter.
              [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 79-023, 49 FR 51010, Nov. 4, 1983]

              § 154.1810
              Cargo manual.
              (a) No person may operate a foreign flag vessel, whose flag administration does not issue IMO Certificates, on the navigable waters of the United States, or a U.S. flag vessel, unless the vessel has on board a cargo manual containing the following information:
              (1) A description of each cargo carried, its handling hazards as a liquid or as a gas including frostbite or asphyxiation, its safety equipment and necessary first aid measures required by this part.
              (2) A description of the dangers of asphyxiation from the inerting gases used on the vessel.
              (3) The measures that mitigate embrittlement of steel structure in way of cargo leakage.
              (4) The use of the firefighting systems on the vessel.
              (5) The features of the cargo containment system that affect its operation and maintenance, including pressure and temperature ranges and relief valve settings.
              (6) Pressures, temperatures, and liquid levels for all operations.
              (7) General information derived from the first loading of the vessel.
              (8) Alarm settings.
              (9) Descriptions of the components of the cargo system, including the following:
              (i) Liquid cargo system.
              (ii) Liquid recirculating or condensate return system.
              (iii) Cargo tank cool-down system.
              (iv) Cargo tank warm-up or vaporization system.
              (v) Gas main system.
              (vi) Cargo tank or compressor relief system and blocked liquid or gas relief system.
              (vii) Inerting system.
              (viii) Boil-off gas compressor or reliquefaction system.
              (ix) Gas detection systems.
              (x) Alarm or safety indication systems.
              (xi) Cargo jettisoning system.
              (xii) The system for using boil-off gas as fuel.
              (10) A description of cargo loading and discharge operations, including simultaneous handling of multigrades of cargo and ballast.
              (11) A description of cargo operations during the voyage.
              (12) A description of cargo tank cool-down and warm-up operations including purging with inert gas and air.
              (13) A description of hull and cargo tank temperature monitoring systems.
              (14) A description of gas detection systems and alarm or safety systems.
              (15) A description of the following conditions and their symptoms, including emergency measures and corrective actions:
              (i) Cargo or ballast valve malfunction.
              (ii) Low cargo tank gas pressure.
              (iii) High fill level shutdown.
              (iv) Gas compressor shutdown.
              (v) Hull cold spots.
              (vi) Cargo piping leaks.
              (vii) Primary or secondary barrier failure.
              (viii) Hold boundary structural failure.
              (ix) Fire in vent mast head.
              (x) Reliquefaction plant failure.
              (xi) Vaporizer malfunction or failure.
              (xii) Piping or cargo valve freeze-up.
              (16) Any other matters relating to operation of the cargo systems.
              (17) The operational means to maintain the vessel in a condition of positive stability in accordance with the loading and stability manual under § 154.1809 through all conditions of:
              (i) Loading and deballasting; and
              (ii) Unloading and ballasting.
              (b) The master shall ensure that the cargo manual is kept up-to-date.

              § 154.1812
              Operational information for terminal personnel.
              The master shall ensure that terminal personnel are told the operational information required by § 154.1810(a)(17).

              § 154.1814
              Cargo information cards.

              (a) No person may operate a vessel unless a cargo information card for each cargo being transported is carried either in the wheelhouse, in the ship's office, or in another location easily accessible to the person in charge of the watch.
              (b) When a vessel is moored at a terminal, the master shall ensure that a set of information cards is in the possession of the terminal's person in charge of cargo transfer operations.
              (c) Each card must be at least 17 cm × 24 cm (63/4 in. × 91/2 in.), have printing on one side only, and must contain the following information about the cargo:
              (1) Name as listed in Table 4.
              (2) Appearance.
              (3) Odor.
              (4) Safe handling procedures, including special handling instructions, and handling hazards.
              (5) Procedures to follow in the event of spills, leaks, or uncontrolled cargo release.
              (6) Procedures to be followed if a person is exposed to the cargo.
              (7) Firefighting procedures and materials.

              § 154.1816
              Cargo location plan.
              The master shall ensure that:
              (a) A cargo location plan is prepared that gives:
              (1) The location and number of each cargo tank; and
              (2) The name of the cargo in each tank;
              (b) One cargo location plan is kept with the sets of cargo information cards required under § 154.1814; and
              (c) The cargo names in the cargo location plan do not differ from the names of the cargoes listed in Table 4.

              § 154.1818
              Certification of inhibition.
              (a) Except as provided in § 154.1740(b), no person may operate a vessel carrying butadiene or vinyl chloride without carrying in the wheelhouse written certification from the shipper that the product is inhibited.
              (b) The certification required by this section must contain the following information:
              (1) The name and concentration of the inhibitor.
              (2) The date the inhibitor was added.
              (3) The expected duration of the inhibitor's effectiveness.
              (4) Any temperature limitations qualifying the inhibitor's effective lifetime.
              (5) The action to be taken if the time of the voyage exceeds the inhibitor's lifetime.

              § 154.1820
              Shipping document.
              No person may operate a vessel without carrying a shipping document in the wheelhouse that lists for each cargo on board:
              (a) The cargo tank in which the cargo is stowed;
              (b) The name of the shipper;
              (c) The location of the loading terminal;
              (d) The cargo name as listed in Table 4; and
              (e) The approximate quantity of the cargo.

              § 154.1822
              Shipping document: Copy for transfer terminal.
              While a vessel is moored at a transfer terminal, the master shall ensure that at least one copy of the shipping document is given to the terminal's person in charge of cargo transfer.

              § 154.1824
              Obstruction of pumproom ladderways.
              The master shall ensure that each cargo pumproom access is unobstructed.

              § 154.1826
              Opening of cargo tanks and cargo sampling.
              (a) The master shall ensure that each cargo tank opening is fully closed at all times.
              (b) The master may authorize the opening of a cargo tank:
              (1) During tank cleaning; and
              (2) To sample a cargo that Table 4 allows to be carried in a containment system having a restricted gauging system if:
              (i) The cargo tank is not being filled during sampling;
              (ii) The vent system has relieved any pressure in the tank; and
              (iii) The person sampling the cargo wears protective clothing.
              (c) The master shall ensure that cargoes requiring closed gauging as listed in Table 4 are sampled only through the controlled sampling arrangement of the cargo tank.

              § 154.1828
              Spaces containing cargo vapor: Entry.
              (a) No person may enter a cargo handling space without the permission of the master or without following a safety procedure established by the master.
              (b) Before allowing anyone to enter a cargo handling space, the master shall ensure that:
              (1) The space is free of toxic vapors and has an oxygen concentration of at least 19.5 percent oxygen by volume; or
              (2) Those entering the space wear protective equipment with breathing apparatus and an officer closely supervises the entire operation in the space.

              § 154.1830
              Warning sign.
              (a) The master shall ensure that a vessel transferring cargo, while fast to a dock or while at anchor in port, displays a warning sign:
              (1) At the gangway facing the shore so that the sign may be seen from the shore; and
              (2) Facing outboard towards the water so that the sign may be seen from the water.
              (b) Except as provided in paragraph (e) of this section, each warning sign must have the following words:
              (1) Warning.
              (2) Dangerous Cargo.
              (3) No Visitors.
              (4) No Smoking.
              (5) No Open Lights.
              (c) Each letter in the words on the sign must:
              (1) Be block style;
              (2) Be black on a white background;
              (3) Be 7.6 cm (3 in.) high;
              (4) Be 5.1 cm (2 in.) wide, except for “M” and “W” which must be 7.6 cm (3 in.) wide, and the letter “I” which may be 1.3 cm (1/2 in.) wide; and
              (5) Have 1.3 cm (1/2 in.) stroke width.
              (d) The spacing between letters must be:
              (1) 1.3 cm (1/2 in.) between letters of the same word on the sign;
              (2) 5.1 cm (2 in.) between words;
              (3) 5.1 cm (2 in.) between lines; and
              (4) 5.1 cm (2 in.) at the borders of the sign.
              (e) The words “No Smoking” and “No Open Lights” may be omitted when the cargoes on board a vessel are not flammable.
              (f) When a vessel carries or transfers vinyl chloride, the warning sign under paragraph (b) of this section must also have the words “Cancer Suspect Agent.”

              § 154.1831
              Persons in charge of transferring liquid cargo in bulk or preparing cargo tanks.
              (a) The owner and operator of the vessel, and his or her agent, and each of them, shall ensure that—
              (1) Enough “Tankerman-PICs” or restricted “Tankerman-PICs”, and “Tankerman-Assistants”, authorized for the classification of cargo carried, are on duty to safely conduct a transfer of liquid cargo in bulk or a cool-down, warm-up, gas-free, or air-out of each cargo tank;
              (2) Each transfer of liquid cargo in bulk, and each cool-down, warm-up, gas-free, or air-out of a cargo tank, is supervised by a person designated as a person in charge of the transfer that possesses the qualifications required by 33 CFR 155.710;
              (3) On each foreign tankship, the person in charge of either a transfer of liquid cargo in bulk or a cool-down, warm-up, gas-free, or air-out of a cargo tank possesses the qualifications required by 33 CFR 155.710;
              (4) When cargo regulated under this part is being transferred, the person in charge of the transfer has received special training in the particular hazards associated with the cargo and in all special procedures for its handling; and
              (5) On each foreign vessel, the person in charge understands his or her responsibilities as described in this subchapter.
              (b) Upon request by the Officer in Charge, Marine Inspection, in whose zone the transfer will take place, the owner and operator of the vessel, and his or her agent, and each of them, shall provide documentary evidence that the person in charge has received the training specified by paragraph (a)(4) of this section and is capable of competently performing the procedures necessary for the cargo.
              [CGD 79-116, 60 FR 17158, Apr. 4, 1995]

              § 154.1834
              Cargo transfer piping.
              The person in charge of cargo transfer shall ensure that cargo is transferred to or from a cargo tank only through the cargo piping system.

              § 154.1836
              Vapor venting as a means of cargo tank pressure and temperature control.
              When the vessel is on the navigable waters of the United States, the master shall ensure that the cargo pressure and temperature control system under §§ 154.701 through 154.709 is operating and that venting of cargo is unnecessary to maintain cargo temperature and pressure control, except under emergency conditions.

              § 154.1838
              Discharge by gas pressurization.
              The person in charge of cargo transfer may not authorize cargo discharge by gas pressurization unless:
              (a) The tank to be offloaded is an independent tank type B or C;
              (b) The pressurizing medium is the cargo vapor or a nonflammable, nontoxic gas that is inert with the cargo; and
              (c) The pressurizing line has:
              (1) A pressure reducing valve that has a setting that is 90 percent or less of the tank's relief valve setting; and
              (2) A manual control valve between the pressure reducing valve and the tank.

              § 154.1840
              Protective clothing.
              The person in charge of cargo transfer shall ensure that each person involved in a cargo transfer operation, except those assigned to gas-safe cargo control rooms, wears protective clothing.

              § 154.1842
              Cargo system: Controls and alarms.
              The master shall ensure that the cargo emergency shut-down system and the alarms under § 154.1325 are tested and working before cargo is transferred.

              § 154.1844
              Cargo tanks: Filling limits.
              (a) Unless a higher limit is specified on the certificate the master shall ensure that a cargo tank is not loaded:
              (1) More than 98 percent liquid full; or
              (2) In excess of the volume determined under the following formula:

                EC02FE91.089

                where:

                VL = maximum volume to which the tank may be loaded;
                V = volume of the tank;
                dr = density at the reference temperature specified in paragraph (b) of this section; and
                dL = density of the cargo at the loading temperature and pressure.

              (b) The reference temperature to be used in paragraph (a)(2) of this section is the temperature corresponding to the vapor pressure of the cargo at the set pressure of the pressure relief valves.

              § 154.1846
              Relief valves: Changing set pressure.
              The master shall:
              (a) Supervise the changing of the set pressure of relief valves under § 154.802(b);
              (b) Enter the change of set pressure in the vessel's log; and
              (c) Ensure that a sign showing the set pressure is posted:
              (1) In the cargo control room or station; and
              (2) At each relief valve.

              § 154.1848
              Inerting.
              (a) The master shall ensure that:
              (1) Hold and interbarrier spaces on a vessel with full secondary barriers are inerted so that the oxygen concentration is 8 percent or less by volume when flammable cargoes are carried;
              (2) Hold and interbarrier spaces contain only dry air or inert gas on:
              (i) A vessel with partial secondary barriers;
              (ii) A vessel with full secondary barriers when non-flammable cargoes are carried; and
              (iii) A vessel with refrigerated independent tanks type C;

              (3) When cargo tanks containing flammable vapor are to be gas freed, the flammable vapors are purged from the tank by inert gas before air is admitted; and

              (4) When gas free cargo tanks are to be filled with a flammable cargo, air is purged from the tank by inert gas until the oxygen concentration in the tank is 8 percent or less by volume before cargo liquid or vapor is introduced.
              (b) Inert gas must be supplied from the shore or from the vessel's inert gas system.

              § 154.1850
              Entering cargo handling spaces.
              (a) The master shall ensure that the ventilation system under § 154.1200 is in operation for 30 minutes before a person enters one of the following:
              (1) Spaces containing cargo pumps, compressors, and compressor motors.
              (2) Gas-dangerous cargo control spaces.
              (3) Other spaces containing cargo handling equipment.
              (b) The master shall ensure that a warning sign listing the requirement for use of the ventilation system, is posted outside of each space under paragraph (a) of this section.
              (c) The master shall ensure that no sources of ignition are put in a cargo handling space on a vessel carrying flammable cargo unless the space is gas free.

              § 154.1852
              Air breathing equipment.
              (a) The master shall ensure that a licensed officer inspects the compressed air breathing equipment at least once each month.
              (b) The master shall enter in the vessel's log a record of the inspection required under paragraph (a) of this section that includes:
              (1) The date of the inspection; and
              (2) The condition of the equipment at the time of the inspection.

              § 154.1854
              Methane (LNG) as fuel.
              (a) If methane (LNG) vapors are used as fuel in the main propulsion system of a vessel, the master shall ensure that the fuel oil fired pilot under § 154.705(c) is used when the vessel is on the navigable waters of the United States.
              (b) When the methane (LNG) fuel supply is shut down due to loss of ventilation or detection of gas, the master shall ensure that the methane (LNG) fuel supply is not used until the leak or other cause of the shutdown is found and corrected.
              (c) The master shall ensure that the required procedure under paragraph (b) of this section is posted in the main machinery space.
              (d) The master shall ensure that the oxygen concentration in the annular space of the fuel line under § 154.706(a)(1) is 8% or less by volume before methane (LNG) vapors are admitted to the fuel line.

              § 154.1858
              Cargo hose.
              The person in charge of cargo transfer shall ensure that cargo hose used for cargo transfer service meets §§ 154.552 through 154.562.

              § 154.1860
              Integral tanks: Cargo colder than −10 °C (14 °F).
              The master shall ensure that an integral tank does not carry a cargo colder than −10 °C (14 °F) unless that carriage is specially approved by the Commandant (CG-OES).
              [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

              § 154.1862
              Posting of speed reduction.
              If a speed reduction is specially approved by the Commandant under § 154.409, the master shall ensure that the speed reduction is posted in the wheelhouse.

              § 154.1864
              Vessel speed within speed reduction.
              The master shall ensure that the speed of the vessel is not greater than the posted speed reduction.

              § 154.1866
              Cargo hose connection: Transferring cargo.
              No person may transfer cargo through a cargo hose connection unless the connection has the remotely controlled quick closing shut off valve required under § 154.538.

              § 154.1868
              Portable blowers in personnel access openings.
              The master shall ensure that a portable blower in a personnel access opening does not reduce the area of the opening so that it does not meet § 154.340.

              § 154.1870
              Bow and stern loading.
              (a) When the bow or stern loading piping is not in use, the master shall lock closed the shut-off valves under § 154.355(a)(4) or remove the spool piece under § 154.355(a)(4).
              (b) The person in charge of cargo transfer shall ensure that after the bow or stern loading piping is used it is purged of cargo vapors with inert gas.
              (c) The person in charge of cargo transfer shall ensure that entrances, forced or natural ventilation intakes, exhausts, and other openings to any deck house alongside the bow or stern loading piping are closed when this piping is in use.
              (d) The person in charge of cargo transfer shall ensure that bow or stern loading piping installed in the area of the accommodation, service, or control space is not used for transfer of the following:
              (1) Acetaldehyde.
              (2) Ammonia, anhydrous.
              (3) Dimethylamine.
              (4) Ethylamine.
              (5) Ethyl Chloride.
              (6) Methyl Chloride.
              (7) Vinyl Chloride.

              § 154.1872
              Cargo emergency jettisoning.
              (a) The master shall ensure that emergency jettisoning piping under § 154.356, except bow and stern loading and discharging piping, is only used when an emergency exists.
              (b) Emergency jettisoning piping when being used may be outside of the transverse tank location under § 154.310.
              (c) The master shall ensure that cargo is not jettisoned in a U.S. port.
              (d) When ethylene oxide is carried, the master shall ensure that the emergency jettisoning piping with associated pumps and fittings is on-line and ready for use for an emergency.
              (e) The master shall lock closed the shut-off valves under § 154.356 when the emergency jettisoning piping is not in use.
              (f) The person in charge of cargo transfer shall ensure that after the emergency jettisoning piping is used it is purged of cargo vapors with inert gas.
              (g) The person in charge of cargo transfer shall ensure that entrances, forced or natural ventilation intakes, exhausts, and other openings to accommodation, service, or control spaces facing the emergency jettisoning piping area and alongside the emergency jettisoning piping are closed when this piping is in use.

                Table 4—Summary of Minimum Requirements

                  Cargo name 1

                  Ship type
                  Independent tank type C required
                  Control of cargo tank vapor space
                  Vapor detection 2

                  Gauging 3

                  Electrical hazard class and group 4

                  Special requirements

                  Acetaldehyde
                  IIG/IIPG

                  Inert
                  I & T
                  C
                  I-C
                  154.1410 (c), 154.1410, 154.1710, 154.1720, 154.1870.

                  Ammonia, anhydrous
                  IIG/IIPG

                  T
                  C
                  I-D
                  154.1000, 154.1400 (c), 154.1405, 154.1410, 154.1702 (b), (c), (e), 154.1760, 154.1870.

                  Butadiene
                  IIG/IIPG

                  Inert
                  I
                  R
                  I-B
                  154.1702 (b), (d), (f), 154.1710, 154.1750, 154.1818.

                  Butane
                  IIG/IIPG

                  I
                  R
                  I-D
                  None.

                  Butylene
                  IIG/IIPG

                  I
                  R
                  I-D
                  None.

                  Dimethylamine
                  IIG/IIPG

                  I & T
                  C
                  I-C
                  154.1400 (c), 154.1405, 154.1410, 154.1702 (b), (c), (e), 154.1870.

                  Ethane
                  IIG

                  I
                  R
                  I-D
                  None.

                  Ethylamine
                  IIG/IIPG

                  I & T
                  C
                  I-C
                  154.1400 (c), 154.1405, 154.1410, 154.1702 (b), (c), (e), 154.1870.

                  Ethyl Chloride
                  IIG/IIPG

                  I & T
                  R
                  I-D
                  154.1870.

                  Ethylene
                  IIG

                  I
                  R
                  I-C
                  None.

                  Ethylene oxide
                  IG
                  Yes
                  Inert
                  I & T
                  C
                  I-B
                  154.660 (b) (3), 154.1400 (c), 154.1405, 154.1410, 154.1702 (b), (d), (f), 154.1705, 154.1710, 154.1720, 154.1725, 154.1730, 154.1870 (a), (b).

                  Methane (LNG)
                  IIG

                  I
                  C
                  I-D
                  154.703 through 154.709, 154.1854.

                  Methyl acetylene-propadiene mixture
                  IIG/IIPG

                  I
                  R
                  I
                  154.1735.

                  Methyl bromide
                  IG
                  Yes

                  I & T
                  C
                  I-D
                  154.660 (b) (3), 154.1345 (c) (d), 154.1400 (c), 154.1405, 154.1410, 154.1702 (a), (d), 154.1705, 154.1720, 154.1870 (a), (b).

                  Methyl chloride
                  IIG/IIPG

                  I & T
                  C
                  I-D
                  154.1702 (a), 154.1870.

                  Nitrogen
                  IIIG

                  O
                  C

                  154.1755.

                  Propane
                  IIG/IIPG

                  I
                  R
                  I-D
                  None.

                  Propylene
                  IIG/IIPG

                  I
                  R
                  I-D
                  None.

                  Refrigerant
                  IIIG

                  R

                  None.

                  Sulfur dioxide
                  IG
                  Yes
                  Dry
                  T
                  C

                  154.660 (b) (3), 154.1345 (c), (d), 154.1400 (c), 154.1405, 154.1410, 154.1705, 154.1715, 154.1720, 154.1870 (a), (b).

                  Vinyl chloride
                  IIG/IIPG

                  I & T
                  C
                  I-D
                  154.1405, 154.1410, 154.1702 (a) (b) (d) (f), 154.1710, 154.1740, 154.1745, 154.1750, 154.1818, 154.1830 (f), 154.1870.

                  1 Refrigerant gases include non-toxic, non-flammable gases such as: dichlorodifluoromethane, dichloromonofluoromethane, dichlorotetrafluoroethane, monochlorodifluoromethane, monochlorotetrafluoroethane, and monochlorotrifluoromethane.

                  2 As used in this column: “I” stands for flammable vapor detection; “T” stands for toxic vapor detection; “O” stands for oxygen detection; and see §§ 154.1345 thru 154.1360.

                  3 As used in this column: “C” stands for closed gauging; “R” stands for restricted gauging; and see § 154.1300.

                  4 The designations used in this column are from the National Electrical Code.

              [CGD 74-289, 44 FR 26009, May 3, 1979; 44 FR 59234, Oct. 15, 1979]

              Pt. 154, App. A
              Appendix A to Part 154—Equivalent Stress
              I. Equivalent stress (σ c) is calculated by the following formula or another formula specially approved by the Commandant (CG-522) as equivalent to the following:

                EC02FE91.090

              where:

              σx = total normal stress in “x” direction.
              σy = total normal stress in “y” direction.
              τxy = total shear stress in “xy” plane.

              II. When the static and dynamic stresses are calculated separately, the total stresses in paragraph I are calculated from the following formulae or another formulae specially approved by the Commandant (CG-522) as equivalent to the following:

                EC02FE91.091

                EC02FE91.092

                EC02FE91.093

              III. Each dynamic and static stress is determined from its acceleration component and its hull strain component from hull deflection and torsion.
              [CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

              Pt. 154, App. B
              Appendix B to Part 154—Stress Analyses Definitions
              The following are the standard definitions of stresses for the analysis of an independent tank type B:

                Normal stress means the component of stress normal to the plane of reference.

                Membrane stress means the component of normal stress that is uniformly distributed and equal to the average value of the stress across the thickness of the section under consideration.

                Bending stress means the variable stress across the thickness of the section under consideration, after the subtraction of the membrane stress.

                Shear stress means the component of the stress acting in the plane of reference.

                Primary stress means the stress produced by the imposed loading that is necessary to balance the external forces and moments. (The basic characteristic of a primary stress is that it is not self-limiting. Primary stresses that considerably exceed the yield strength result in failure or at least in gross deformations.)

                Primary general membrane stress means the primary membrane stress that is so distributed in the structure that no redistribution of load occurs as a result of yielding.

                Primary local membrane stress means the resulting stress from both a membrane stress, caused by pressure or other mechanical loading, and a primary or a discontinuity effect that produces excessive distortion in the transfer of loads to other portions of the structure. (The resulting stress is a primary local membrane stress although it has some characteristics of a secondary stress.) A stress region is local if:

                EC02FE91.094

                EC02FE91.095

              where:

              S1 = distance in the meridional direction over which the equivalent stress exceeds 1.1 f.
              S2 = distance in the meridional direction to another region where the limits for primary general membrane stress are exceeded.
              R = mean radius of the vessel.
              t = wall thickness of the vessel at the location where the primary general membrane stress limit is exceeded.
              f = allowable primary general membrane stress.

                Secondary stress means a normal stress or shear stress caused by constraints of adjacent parts or by self-constraint of a structure. The basic characteristic of a secondary stress is that it is self-limiting. Local yielding and minor distortions can satisfy the conditions that cause the stress to occur.

          PART 155 [RESERVED]

        SUBCHAPTER P—MANNING OF VESSELS [RESERVED]

      FINDING AIDS
      A list of CFR titles, subtitles, chapters, subchapters and parts and an alphabetical list of agencies publishing in the CFR are included in the CFR Index and Finding Aids volume to the Code of Federal Regulations which is published separately and revised annually.
      Table of CFR Titles and Chapters
      Alphabetical List of Agencies Appearing in the CFR
      List of CFR Sections Affected

      Chap.

      Table of CFR Titles and Chapters
      (Revised as of October 1, 2020)

        Title 1—General Provisions
        I
        Administrative Committee of the Federal Register (Parts 1—49)
        II
        Office of the Federal Register (Parts 50—299)
        III
        Administrative Conference of the United States (Parts 300—399)
        IV
        Miscellaneous Agencies (Parts 400—599)
        VI
        National Capital Planning Commission (Parts 600—699)

        Title 2—Grants and Agreements
        Subtitle A—Office of Management and Budget Guidance for Grants and Agreements
        I
        Office of Management and Budget Governmentwide Guidance for Grants and Agreements (Parts 2—199)
        II
        Office of Management and Budget Guidance (Parts 200—299)
        Subtitle B—Federal Agency Regulations for Grants and Agreements
        III
        Department of Health and Human Services (Parts 300—399)
        IV
        Department of Agriculture (Parts 400—499)
        VI
        Department of State (Parts 600—699)
        VII
        Agency for International Development (Parts 700—799)
        VIII
        Department of Veterans Affairs (Parts 800—899)
        IX
        Department of Energy (Parts 900—999)
        X
        Department of the Treasury (Parts 1000—1099)
        XI
        Department of Defense (Parts 1100—1199)
        XII
        Department of Transportation (Parts 1200—1299)
        XIII
        Department of Commerce (Parts 1300—1399)
        XIV
        Department of the Interior (Parts 1400—1499)
        XV
        Environmental Protection Agency (Parts 1500—1599)
        XVIII
        National Aeronautics and Space Administration (Parts 1800—1899)
        XX
        United States Nuclear Regulatory Commission (Parts 2000—2099)
        XXII
        Corporation for National and Community Service (Parts 2200—2299)
        XXIII
        Social Security Administration (Parts 2300—2399)
        XXIV
        Department of Housing and Urban Development (Parts 2400—2499)
        XXV
        National Science Foundation (Parts 2500—2599)
        XXVI

        National Archives and Records Administration (Parts 2600—2699)

        XXVII
        Small Business Administration (Parts 2700—2799)
        XXVIII
        Department of Justice (Parts 2800—2899)
        XXIX
        Department of Labor (Parts 2900—2999)
        XXX
        Department of Homeland Security (Parts 3000—3099)
        XXXI
        Institute of Museum and Library Services (Parts 3100—3199)
        XXXII
        National Endowment for the Arts (Parts 3200—3299)
        XXXIII
        National Endowment for the Humanities (Parts 3300—3399)
        XXXIV
        Department of Education (Parts 3400—3499)
        XXXV
        Export-Import Bank of the United States (Parts 3500—3599)
        XXXVI
        Office of National Drug Control Policy, Executive Office of the President (Parts 3600—3699)
        XXXVII
        Peace Corps (Parts 3700—3799)
        LVIII
        Election Assistance Commission (Parts 5800—5899)
        LIX
        Gulf Coast Ecosystem Restoration Council (Parts 5900—5999)

        Title 3—The President
        I
        Executive Office of the President (Parts 100—199)

        Title 4—Accounts
        I
        Government Accountability Office (Parts 1—199)

        Title 5—Administrative Personnel
        I
        Office of Personnel Management (Parts 1—1199)
        II
        Merit Systems Protection Board (Parts 1200—1299)
        III
        Office of Management and Budget (Parts 1300—1399)
        IV
        Office of Personnel Management and Office of the Director of National Intelligence (Parts 1400—1499)
        V
        The International Organizations Employees Loyalty Board (Parts 1500—1599)
        VI
        Federal Retirement Thrift Investment Board (Parts 1600—1699)
        VIII
        Office of Special Counsel (Parts 1800—1899)
        IX
        Appalachian Regional Commission (Parts 1900—1999)
        XI
        Armed Forces Retirement Home (Parts 2100—2199)
        XIV
        Federal Labor Relations Authority, General Counsel of the Federal Labor Relations Authority and Federal Service Impasses Panel (Parts 2400—2499)
        XVI
        Office of Government Ethics (Parts 2600—2699)
        XXI
        Department of the Treasury (Parts 3100—3199)
        XXII
        Federal Deposit Insurance Corporation (Parts 3200—3299)
        XXIII
        Department of Energy (Parts 3300—3399)
        XXIV
        Federal Energy Regulatory Commission (Parts 3400—3499)
        XXV
        Department of the Interior (Parts 3500—3599)
        XXVI
        Department of Defense (Parts 3600—3699)

        XXVIII
        Department of Justice (Parts 3800—3899)
        XXIX
        Federal Communications Commission (Parts 3900—3999)
        XXX
        Farm Credit System Insurance Corporation (Parts 4000—4099)
        XXXI
        Farm Credit Administration (Parts 4100—4199)
        XXXIII
        U.S. International Development Finance Corporation (Parts 4300—4399)
        XXXIV
        Securities and Exchange Commission (Parts 4400—4499)
        XXXV
        Office of Personnel Management (Parts 4500—4599)
        XXXVI
        Department of Homeland Security (Parts 4600—4699)
        XXXVII
        Federal Election Commission (Parts 4700—4799)
        XL
        Interstate Commerce Commission (Parts 5000—5099)
        XLI
        Commodity Futures Trading Commission (Parts 5100—5199)
        XLII
        Department of Labor (Parts 5200—5299)
        XLIII
        National Science Foundation (Parts 5300—5399)
        XLV
        Department of Health and Human Services (Parts 5500—5599)
        XLVI
        Postal Rate Commission (Parts 5600—5699)
        XLVII
        Federal Trade Commission (Parts 5700—5799)
        XLVIII
        Nuclear Regulatory Commission (Parts 5800—5899)
        XLIX
        Federal Labor Relations Authority (Parts 5900—5999)
        L
        Department of Transportation (Parts 6000—6099)
        LII
        Export-Import Bank of the United States (Parts 6200—6299)
        LIII
        Department of Education (Parts 6300—6399)
        LIV
        Environmental Protection Agency (Parts 6400—6499)
        LV
        National Endowment for the Arts (Parts 6500—6599)
        LVI
        National Endowment for the Humanities (Parts 6600—6699)
        LVII
        General Services Administration (Parts 6700—6799)
        LVIII
        Board of Governors of the Federal Reserve System (Parts 6800—6899)
        LIX
        National Aeronautics and Space Administration (Parts 6900—6999)
        LX
        United States Postal Service (Parts 7000—7099)
        LXI
        National Labor Relations Board (Parts 7100—7199)
        LXII
        Equal Employment Opportunity Commission (Parts 7200—7299)
        LXIII
        Inter-American Foundation (Parts 7300—7399)
        LXIV
        Merit Systems Protection Board (Parts 7400—7499)
        LXV
        Department of Housing and Urban Development (Parts 7500—7599)
        LXVI
        National Archives and Records Administration (Parts 7600—7699)
        LXVII
        Institute of Museum and Library Services (Parts 7700—7799)
        LXVIII
        Commission on Civil Rights (Parts 7800—7899)
        LXIX
        Tennessee Valley Authority (Parts 7900—7999)
        LXX
        Court Services and Offender Supervision Agency for the District of Columbia (Parts 8000—8099)
        LXXI
        Consumer Product Safety Commission (Parts 8100—8199)
        LXXIII
        Department of Agriculture (Parts 8300—8399)

        LXXIV
        Federal Mine Safety and Health Review Commission (Parts 8400—8499)
        LXXVI
        Federal Retirement Thrift Investment Board (Parts 8600—8699)
        LXXVII
        Office of Management and Budget (Parts 8700—8799)
        LXXX
        Federal Housing Finance Agency (Parts 9000—9099)
        LXXXIII
        Special Inspector General for Afghanistan Reconstruction (Parts 9300—9399)
        LXXXIV
        Bureau of Consumer Financial Protection (Parts 9400—9499)
        LXXXVI
        National Credit Union Administration (Parts 9600—9699)
        XCVII
        Department of Homeland Security Human Resources Management System (Department of Homeland Security—Office of Personnel Management) (Parts 9700—9799)
        XCVIII
        Council of the Inspectors General on Integrity and Efficiency (Parts 9800—9899)
        XCIX
        Military Compensation and Retirement Modernization Commission (Parts 9900—9999)
        C
        National Council on Disability (Parts 10000—10049)
        CI
        National Mediation Board (Part 10101)

        Title 6—Domestic Security
        I
        Department of Homeland Security, Office of the Secretary (Parts 1—199)
        X
        Privacy and Civil Liberties Oversight Board (Parts 1000—1099)

        Title 7—Agriculture
        Subtitle A—Office of the Secretary of Agriculture (Parts 0—26)
        Subtitle B—Regulations of the Department of Agriculture
        I
        Agricultural Marketing Service (Standards, Inspections, Marketing Practices), Department of Agriculture (Parts 27—209)
        II
        Food and Nutrition Service, Department of Agriculture (Parts 210—299)
        III
        Animal and Plant Health Inspection Service, Department of Agriculture (Parts 300—399)
        IV
        Federal Crop Insurance Corporation, Department of Agriculture (Parts 400—499)
        V
        Agricultural Research Service, Department of Agriculture (Parts 500—599)
        VI
        Natural Resources Conservation Service, Department of Agriculture (Parts 600—699)
        VII
        Farm Service Agency, Department of Agriculture (Parts 700—799)
        VIII

        Agricultural Marketing Service (Federal Grain Inspection Service, Fair Trade Practices Program), Department of Agriculture (Parts 800—899)

        IX
        Agricultural Marketing Service (Marketing Agreements and Orders; Fruits, Vegetables, Nuts), Department of Agriculture (Parts 900—999)
        X
        Agricultural Marketing Service (Marketing Agreements and Orders; Milk), Department of Agriculture (Parts 1000—1199)
        XI
        Agricultural Marketing Service (Marketing Agreements and Orders; Miscellaneous Commodities), Department of Agriculture (Parts 1200—1299)
        XIV
        Commodity Credit Corporation, Department of Agriculture (Parts 1400—1499)
        XV
        Foreign Agricultural Service, Department of Agriculture (Parts 1500—1599)
        XVI
        [Reserved]
        XVII
        Rural Utilities Service, Department of Agriculture (Parts 1700—1799)
        XVIII
        Rural Housing Service, Rural Business-Cooperative Service, Rural Utilities Service, and Farm Service Agency, Department of Agriculture (Parts 1800—2099)
        XX
        [Reserved]
        XXV
        Office of Advocacy and Outreach, Department of Agriculture (Parts 2500—2599)
        XXVI
        Office of Inspector General, Department of Agriculture (Parts 2600—2699)
        XXVII
        Office of Information Resources Management, Department of Agriculture (Parts 2700—2799)
        XXVIII
        Office of Operations, Department of Agriculture (Parts 2800—2899)
        XXIX
        Office of Energy Policy and New Uses, Department of Agriculture (Parts 2900—2999)
        XXX
        Office of the Chief Financial Officer, Department of Agriculture (Parts 3000—3099)
        XXXI
        Office of Environmental Quality, Department of Agriculture (Parts 3100—3199)
        XXXII
        Office of Procurement and Property Management, Department of Agriculture (Parts 3200—3299)
        XXXIII
        Office of Transportation, Department of Agriculture (Parts 3300—3399)
        XXXIV
        National Institute of Food and Agriculture (Parts 3400—3499)
        XXXV
        Rural Housing Service, Department of Agriculture (Parts 3500—3599)
        XXXVI
        National Agricultural Statistics Service, Department of Agriculture (Parts 3600—3699)
        XXXVII
        Economic Research Service, Department of Agriculture (Parts 3700—3799)
        XXXVIII
        World Agricultural Outlook Board, Department of Agriculture (Parts 3800—3899)
        XLI
        [Reserved]
        XLII

        Rural Business-Cooperative Service and Rural Utilities Service, Department of Agriculture (Parts 4200—4299)

        L
        Rural Business-Cooperative Service, Rural Housing Service, and Rural Utilities Service, Department of Agriculture (Parts 5001—5099)

        Title 8—Aliens and Nationality
        I
        Department of Homeland Security (Parts 1—499)
        V
        Executive Office for Immigration Review, Department of Justice (Parts 1000—1399)

        Title 9—Animals and Animal Products
        I
        Animal and Plant Health Inspection Service, Department of Agriculture (Parts 1—199)
        II
        Agricultural Marketing Service (Federal Grain Inspection Service, Fair Trade Practices Program), Department of Agriculture (Parts 200—299)
        III
        Food Safety and Inspection Service, Department of Agriculture (Parts 300—599)

        Title 10—Energy
        I
        Nuclear Regulatory Commission (Parts 0—199)
        II
        Department of Energy (Parts 200—699)
        III
        Department of Energy (Parts 700—999)
        X
        Department of Energy (General Provisions) (Parts 1000—1099)
        XIII
        Nuclear Waste Technical Review Board (Parts 1300—1399)
        XVII
        Defense Nuclear Facilities Safety Board (Parts 1700—1799)
        XVIII
        Northeast Interstate Low-Level Radioactive Waste Commission (Parts 1800—1899)

        Title 11—Federal Elections
        I
        Federal Election Commission (Parts 1—9099)
        II
        Election Assistance Commission (Parts 9400—9499)

        Title 12—Banks and Banking
        I
        Comptroller of the Currency, Department of the Treasury (Parts 1—199)
        II
        Federal Reserve System (Parts 200—299)
        III
        Federal Deposit Insurance Corporation (Parts 300—399)
        IV
        Export-Import Bank of the United States (Parts 400—499)
        V
        (Parts 500—599) [Reserved]
        VI
        Farm Credit Administration (Parts 600—699)
        VII
        National Credit Union Administration (Parts 700—799)
        VIII
        Federal Financing Bank (Parts 800—899)
        IX
        (Parts 900—999)[Reserved]

        X
        Bureau of Consumer Financial Protection (Parts 1000—1099)
        XI
        Federal Financial Institutions Examination Council (Parts 1100—1199)
        XII
        Federal Housing Finance Agency (Parts 1200—1299)
        XIII
        Financial Stability Oversight Council (Parts 1300—1399)
        XIV
        Farm Credit System Insurance Corporation (Parts 1400—1499)
        XV
        Department of the Treasury (Parts 1500—1599)
        XVI
        Office of Financial Research (Parts 1600—1699)
        XVII
        Office of Federal Housing Enterprise Oversight, Department of Housing and Urban Development (Parts 1700—1799)
        XVIII
        Community Development Financial Institutions Fund, Department of the Treasury (Parts 1800—1899)

        Title 13—Business Credit and Assistance
        I
        Small Business Administration (Parts 1—199)
        III
        Economic Development Administration, Department of Commerce (Parts 300—399)
        IV
        Emergency Steel Guarantee Loan Board (Parts 400—499)
        V
        Emergency Oil and Gas Guaranteed Loan Board (Parts 500—599)

        Title 14—Aeronautics and Space
        I
        Federal Aviation Administration, Department of Transportation (Parts 1—199)
        II
        Office of the Secretary, Department of Transportation (Aviation Proceedings) (Parts 200—399)
        III
        Commercial Space Transportation, Federal Aviation Administration, Department of Transportation (Parts 400—1199)
        V
        National Aeronautics and Space Administration (Parts 1200—1299)
        VI
        Air Transportation System Stabilization (Parts 1300—1399)

        Title 15—Commerce and Foreign Trade
        Subtitle A—Office of the Secretary of Commerce (Parts 0—29)
        Subtitle B—Regulations Relating to Commerce and Foreign Trade
        I
        Bureau of the Census, Department of Commerce (Parts 30—199)
        II
        National Institute of Standards and Technology, Department of Commerce (Parts 200—299)
        III
        International Trade Administration, Department of Commerce (Parts 300—399)
        IV
        Foreign-Trade Zones Board, Department of Commerce (Parts 400—499)
        VII

        Bureau of Industry and Security, Department of Commerce (Parts 700—799)

        VIII
        Bureau of Economic Analysis, Department of Commerce (Parts 800—899)
        IX
        National Oceanic and Atmospheric Administration, Department of Commerce (Parts 900—999)
        XI
        National Technical Information Service, Department of Commerce (Parts 1100—1199)
        XIII
        East-West Foreign Trade Board (Parts 1300—1399)
        XIV
        Minority Business Development Agency (Parts 1400—1499)
        Subtitle C—Regulations Relating to Foreign Trade Agreements
        XX
        Office of the United States Trade Representative (Parts 2000—2099)
        Subtitle D—Regulations Relating to Telecommunications and Information
        XXIII
        National Telecommunications and Information Administration, Department of Commerce (Parts 2300—2399) [Reserved]

        Title 16—Commercial Practices
        I
        Federal Trade Commission (Parts 0—999)
        II
        Consumer Product Safety Commission (Parts 1000—1799)

        Title 17—Commodity and Securities Exchanges
        I
        Commodity Futures Trading Commission (Parts 1—199)
        II
        Securities and Exchange Commission (Parts 200—399)
        IV
        Department of the Treasury (Parts 400—499)

        Title 18—Conservation of Power and Water Resources
        I
        Federal Energy Regulatory Commission, Department of Energy (Parts 1—399)
        III
        Delaware River Basin Commission (Parts 400—499)
        VI
        Water Resources Council (Parts 700—799)
        VIII
        Susquehanna River Basin Commission (Parts 800—899)
        XIII
        Tennessee Valley Authority (Parts 1300—1399)

        Title 19—Customs Duties
        I
        U.S. Customs and Border Protection, Department of Homeland Security; Department of the Treasury (Parts 0—199)
        II
        United States International Trade Commission (Parts 200—299)
        III
        International Trade Administration, Department of Commerce (Parts 300—399)
        IV
        U.S. Immigration and Customs Enforcement, Department of Homeland Security (Parts 400—599) [Reserved]

        Title 20—Employees' Benefits
        I
        Office of Workers' Compensation Programs, Department of Labor (Parts 1—199)
        II
        Railroad Retirement Board (Parts 200—399)
        III
        Social Security Administration (Parts 400—499)
        IV
        Employees' Compensation Appeals Board, Department of Labor (Parts 500—599)
        V
        Employment and Training Administration, Department of Labor (Parts 600—699)
        VI
        Office of Workers' Compensation Programs, Department of Labor (Parts 700—799)
        VII
        Benefits Review Board, Department of Labor (Parts 800—899)
        VIII
        Joint Board for the Enrollment of Actuaries (Parts 900—999)
        IX
        Office of the Assistant Secretary for Veterans' Employment and Training Service, Department of Labor (Parts 1000—1099)

        Title 21—Food and Drugs
        I
        Food and Drug Administration, Department of Health and Human Services (Parts 1—1299)
        II
        Drug Enforcement Administration, Department of Justice (Parts 1300—1399)
        III
        Office of National Drug Control Policy (Parts 1400—1499)

        Title 22—Foreign Relations
        I
        Department of State (Parts 1—199)
        II
        Agency for International Development (Parts 200—299)
        III
        Peace Corps (Parts 300—399)
        IV
        International Joint Commission, United States and Canada (Parts 400—499)
        V
        Broadcasting Board of Governors (Parts 500—599)
        VII
        Overseas Private Investment Corporation (Parts 700—799)
        IX
        Foreign Service Grievance Board (Parts 900—999)
        X
        Inter-American Foundation (Parts 1000—1099)
        XI
        International Boundary and Water Commission, United States and Mexico, United States Section (Parts 1100—1199)
        XII
        United States International Development Cooperation Agency (Parts 1200—1299)
        XIII
        Millennium Challenge Corporation (Parts 1300—1399)
        XIV
        Foreign Service Labor Relations Board; Federal Labor Relations Authority; General Counsel of the Federal Labor Relations Authority; and the Foreign Service Impasse Disputes Panel (Parts 1400—1499)
        XV
        African Development Foundation (Parts 1500—1599)
        XVI
        Japan-United States Friendship Commission (Parts 1600—1699)
        XVII
        United States Institute of Peace (Parts 1700—1799)

        Title 23—Highways
        I
        Federal Highway Administration, Department of Transportation (Parts 1—999)
        II
        National Highway Traffic Safety Administration and Federal Highway Administration, Department of Transportation (Parts 1200—1299)
        III
        National Highway Traffic Safety Administration, Department of Transportation (Parts 1300—1399)

        Title 24—Housing and Urban Development
        Subtitle A—Office of the Secretary, Department of Housing and Urban Development (Parts 0—99)
        Subtitle B—Regulations Relating to Housing and Urban Development
        I
        Office of Assistant Secretary for Equal Opportunity, Department of Housing and Urban Development (Parts 100—199)
        II
        Office of Assistant Secretary for Housing-Federal Housing Commissioner, Department of Housing and Urban Development (Parts 200—299)
        III
        Government National Mortgage Association, Department of Housing and Urban Development (Parts 300—399)
        IV
        Office of Housing and Office of Multifamily Housing Assistance Restructuring, Department of Housing and Urban Development (Parts 400—499)
        V
        Office of Assistant Secretary for Community Planning and Development, Department of Housing and Urban Development (Parts 500—599)
        VI
        Office of Assistant Secretary for Community Planning and Development, Department of Housing and Urban Development (Parts 600—699) [Reserved]
        VII
        Office of the Secretary, Department of Housing and Urban Development (Housing Assistance Programs and Public and Indian Housing Programs) (Parts 700—799)
        VIII
        Office of the Assistant Secretary for Housing—Federal Housing Commissioner, Department of Housing and Urban Development (Section 8 Housing Assistance Programs, Section 202 Direct Loan Program, Section 202 Supportive Housing for the Elderly Program and Section 811 Supportive Housing for Persons With Disabilities Program) (Parts 800—899)
        IX
        Office of Assistant Secretary for Public and Indian Housing, Department of Housing and Urban Development (Parts 900—1699)
        XII
        Office of Inspector General, Department of Housing and Urban Development (Parts 2000—2099)
        XV
        Emergency Mortgage Insurance and Loan Programs, Department of Housing and Urban Development (Parts 2700—2799) [Reserved]
        XX
        Office of Assistant Secretary for Housing—Federal Housing Commissioner, Department of Housing and Urban Development (Parts 3200—3899)
        XXIV
        Board of Directors of the HOPE for Homeowners Program (Parts 4000—4099) [Reserved]
        XXV
        Neighborhood Reinvestment Corporation (Parts 4100—4199)

        Title 25—Indians
        I
        Bureau of Indian Affairs, Department of the Interior (Parts 1—299)
        II
        Indian Arts and Crafts Board, Department of the Interior (Parts 300—399)
        III
        National Indian Gaming Commission, Department of the Interior (Parts 500—599)
        IV
        Office of Navajo and Hopi Indian Relocation (Parts 700—899)
        V
        Bureau of Indian Affairs, Department of the Interior, and Indian Health Service, Department of Health and Human Services (Part 900—999)
        VI
        Office of the Assistant Secretary, Indian Affairs, Department of the Interior (Parts 1000—1199)
        VII
        Office of the Special Trustee for American Indians, Department of the Interior (Parts 1200—1299)

        Title 26—Internal Revenue
        I
        Internal Revenue Service, Department of the Treasury (Parts 1—End)

        Title 27—Alcohol, Tobacco Products and Firearms
        I
        Alcohol and Tobacco Tax and Trade Bureau, Department of the Treasury (Parts 1—399)
        II
        Bureau of Alcohol, Tobacco, Firearms, and Explosives, Department of Justice (Parts 400—799)

        Title 28—Judicial Administration
        I
        Department of Justice (Parts 0—299)
        III
        Federal Prison Industries, Inc., Department of Justice (Parts 300—399)
        V
        Bureau of Prisons, Department of Justice (Parts 500—599)
        VI
        Offices of Independent Counsel, Department of Justice (Parts 600—699)
        VII
        Office of Independent Counsel (Parts 700—799)
        VIII
        Court Services and Offender Supervision Agency for the District of Columbia (Parts 800—899)
        IX
        National Crime Prevention and Privacy Compact Council (Parts 900—999)
        XI
        Department of Justice and Department of State (Parts 1100—1199)

        Title 29—Labor
        Subtitle A—Office of the Secretary of Labor (Parts 0—99)
        Subtitle B—Regulations Relating to Labor
        I
        National Labor Relations Board (Parts 100—199)

        II
        Office of Labor-Management Standards, Department of Labor (Parts 200—299)
        III
        National Railroad Adjustment Board (Parts 300—399)
        IV
        Office of Labor-Management Standards, Department of Labor (Parts 400—499)
        V
        Wage and Hour Division, Department of Labor (Parts 500—899)
        IX
        Construction Industry Collective Bargaining Commission (Parts 900—999)
        X
        National Mediation Board (Parts 1200—1299)
        XII
        Federal Mediation and Conciliation Service (Parts 1400—1499)
        XIV
        Equal Employment Opportunity Commission (Parts 1600—1699)
        XVII
        Occupational Safety and Health Administration, Department of Labor (Parts 1900—1999)
        XX
        Occupational Safety and Health Review Commission (Parts 2200—2499)
        XXV
        Employee Benefits Security Administration, Department of Labor (Parts 2500—2599)
        XXVII
        Federal Mine Safety and Health Review Commission (Parts 2700—2799)
        XL
        Pension Benefit Guaranty Corporation (Parts 4000—4999)

        Title 30—Mineral Resources
        I
        Mine Safety and Health Administration, Department of Labor (Parts 1—199)
        II
        Bureau of Safety and Environmental Enforcement, Department of the Interior (Parts 200—299)
        IV
        Geological Survey, Department of the Interior (Parts 400—499)
        V
        Bureau of Ocean Energy Management, Department of the Interior (Parts 500—599)
        VII
        Office of Surface Mining Reclamation and Enforcement, Department of the Interior (Parts 700—999)
        XII
        Office of Natural Resources Revenue, Department of the Interior (Parts 1200—1299)

        Title 31—Money and Finance: Treasury
        Subtitle A—Office of the Secretary of the Treasury (Parts 0—50)
        Subtitle B—Regulations Relating to Money and Finance
        I
        Monetary Offices, Department of the Treasury (Parts 51—199)
        II
        Fiscal Service, Department of the Treasury (Parts 200—399)
        IV
        Secret Service, Department of the Treasury (Parts 400—499)
        V
        Office of Foreign Assets Control, Department of the Treasury (Parts 500—599)
        VI
        Bureau of Engraving and Printing, Department of the Treasury (Parts 600—699)
        VII

        Federal Law Enforcement Training Center, Department of the Treasury (Parts 700—799)

        VIII
        Office of Investment Security, Department of the Treasury (Parts 800—899)
        IX
        Federal Claims Collection Standards (Department of the Treasury—Department of Justice) (Parts 900—999)
        X
        Financial Crimes Enforcement Network, Department of the Treasury (Parts 1000—1099)

        Title 32—National Defense
        Subtitle A—Department of Defense
        I
        Office of the Secretary of Defense (Parts 1—399)
        V
        Department of the Army (Parts 400—699)
        VI
        Department of the Navy (Parts 700—799)
        VII
        Department of the Air Force (Parts 800—1099)
        Subtitle B—Other Regulations Relating to National Defense
        XII
        Department of Defense, Defense Logistics Agency (Parts 1200—1299)
        XVI
        Selective Service System (Parts 1600—1699)
        XVII
        Office of the Director of National Intelligence (Parts 1700—1799)
        XVIII
        National Counterintelligence Center (Parts 1800—1899)
        XIX
        Central Intelligence Agency (Parts 1900—1999)
        XX
        Information Security Oversight Office, National Archives and Records Administration (Parts 2000—2099)
        XXI
        National Security Council (Parts 2100—2199)
        XXIV
        Office of Science and Technology Policy (Parts 2400—2499)
        XXVII
        Office for Micronesian Status Negotiations (Parts 2700—2799)
        XXVIII
        Office of the Vice President of the United States (Parts 2800—2899)

        Title 33—Navigation and Navigable Waters
        I
        Coast Guard, Department of Homeland Security (Parts 1—199)
        II
        Corps of Engineers, Department of the Army, Department of Defense (Parts 200—399)
        IV
        Saint Lawrence Seaway Development Corporation, Department of Transportation (Parts 400—499)

        Title 34—Education
        Subtitle A—Office of the Secretary, Department of Education (Parts 1—99)
        Subtitle B—Regulations of the Offices of the Department of Education
        I
        Office for Civil Rights, Department of Education (Parts 100—199)
        II

        Office of Elementary and Secondary Education, Department of Education (Parts 200—299)

        III
        Office of Special Education and Rehabilitative Services, Department of Education (Parts 300—399)
        IV
        Office of Career, Technical, and Adult Education, Department of Education (Parts 400—499)
        V
        Office of Bilingual Education and Minority Languages Affairs, Department of Education (Parts 500—599) [Reserved]
        VI
        Office of Postsecondary Education, Department of Education (Parts 600—699)
        VII
        Office of Educational Research and Improvement, Department of Education (Parts 700—799) [Reserved]
        Subtitle C—Regulations Relating to Education
        XI
        (Parts 1100—1199) [Reserved]
        XII
        National Council on Disability (Parts 1200—1299)

        Title 35 [Reserved]

        Title 36—Parks, Forests, and Public Property
        I
        National Park Service, Department of the Interior (Parts 1—199)
        II
        Forest Service, Department of Agriculture (Parts 200—299)
        III
        Corps of Engineers, Department of the Army (Parts 300—399)
        IV
        American Battle Monuments Commission (Parts 400—499)
        V
        Smithsonian Institution (Parts 500—599)
        VI
        [Reserved]
        VII
        Library of Congress (Parts 700—799)
        VIII
        Advisory Council on Historic Preservation (Parts 800—899)
        IX
        Pennsylvania Avenue Development Corporation (Parts 900—999)
        X
        Presidio Trust (Parts 1000—1099)
        XI
        Architectural and Transportation Barriers Compliance Board (Parts 1100—1199)
        XII
        National Archives and Records Administration (Parts 1200—1299)
        XV
        Oklahoma City National Memorial Trust (Parts 1500—1599)
        XVI
        Morris K. Udall Scholarship and Excellence in National Environmental Policy Foundation (Parts 1600—1699)

        Title 37—Patents, Trademarks, and Copyrights
        I
        United States Patent and Trademark Office, Department of Commerce (Parts 1—199)
        II
        U.S. Copyright Office, Library of Congress (Parts 200—299)
        III
        Copyright Royalty Board, Library of Congress (Parts 300—399)
        IV
        National Institute of Standards and Technology, Department of Commerce (Parts 400—599)

        Title 38—Pensions, Bonuses, and Veterans' Relief
        I
        Department of Veterans Affairs (Parts 0—199)
        II
        Armed Forces Retirement Home (Parts 200—299)

        Title 39—Postal Service
        I
        United States Postal Service (Parts 1—999)
        III
        Postal Regulatory Commission (Parts 3000—3099)

        Title 40—Protection of Environment
        I
        Environmental Protection Agency (Parts 1—1099)
        IV
        Environmental Protection Agency and Department of Justice (Parts 1400—1499)
        V
        Council on Environmental Quality (Parts 1500—1599)
        VI
        Chemical Safety and Hazard Investigation Board (Parts 1600—1699)
        VII
        Environmental Protection Agency and Department of Defense; Uniform National Discharge Standards for Vessels of the Armed Forces (Parts 1700—1799)
        VIII
        Gulf Coast Ecosystem Restoration Council (Parts 1800—1899)

        Title 41—Public Contracts and Property Management
        Subtitle A—Federal Procurement Regulations System [Note]
        Subtitle B—Other Provisions Relating to Public Contracts
        50
        Public Contracts, Department of Labor (Parts 50-1—50-999)
        51
        Committee for Purchase From People Who Are Blind or Severely Disabled (Parts 51-1—51-99)
        60
        Office of Federal Contract Compliance Programs, Equal Employment Opportunity, Department of Labor (Parts 60-1—60-999)
        61
        Office of the Assistant Secretary for Veterans' Employment and Training Service, Department of Labor (Parts 61-1—61-999)
        62—100
        [Reserved]
        Subtitle C—Federal Property Management Regulations System
        101
        Federal Property Management Regulations (Parts 101-1—101-99)
        102
        Federal Management Regulation (Parts 102-1—102-299)
        103—104
        [Reserved]
        105
        General Services Administration (Parts 105-1—105-999)
        109
        Department of Energy Property Management Regulations (Parts 109-1—109-99)
        114
        Department of the Interior (Parts 114-1—114-99)
        115
        Environmental Protection Agency (Parts 115-1—115-99)
        128
        Department of Justice (Parts 128-1—128-99)
        129—200
        [Reserved]

        Subtitle D—Other Provisions Relating to Property Management [Reserved]

        Subtitle E—Federal Information Resources Management Regulations System [Reserved]
        Subtitle F—Federal Travel Regulation System
        300
        General (Parts 300-1—300-99)
        301
        Temporary Duty (TDY) Travel Allowances (Parts 301-1—301-99)
        302
        Relocation Allowances (Parts 302-1—302-99)
        303
        Payment of Expenses Connected with the Death of Certain Employees (Part 303-1—303-99)
        304
        Payment of Travel Expenses from a Non-Federal Source (Parts 304-1—304-99)

        Title 42—Public Health
        I
        Public Health Service, Department of Health and Human Services (Parts 1—199)
        II—III
        [Reserved]
        IV
        Centers for Medicare & Medicaid Services, Department of Health and Human Services (Parts 400—699)
        V
        Office of Inspector General-Health Care, Department of Health and Human Services (Parts 1000—1099)

        Title 43—Public Lands: Interior
        Subtitle A—Office of the Secretary of the Interior (Parts 1—199)
        Subtitle B—Regulations Relating to Public Lands
        I
        Bureau of Reclamation, Department of the Interior (Parts 400—999)
        II
        Bureau of Land Management, Department of the Interior (Parts 1000—9999)
        III
        Utah Reclamation Mitigation and Conservation Commission (Parts 10000—10099)

        Title 44—Emergency Management and Assistance
        I
        Federal Emergency Management Agency, Department of Homeland Security (Parts 0—399)
        IV
        Department of Commerce and Department of Transportation (Parts 400—499)

        Title 45—Public Welfare
        Subtitle A—Department of Health and Human Services (Parts 1—199)
        Subtitle B—Regulations Relating to Public Welfare
        II

        Office of Family Assistance (Assistance Programs), Administration for Children and Families, Department of Health and Human Services (Parts 200—299)

        III
        Office of Child Support Enforcement (Child Support Enforcement Program), Administration for Children and Families, Department of Health and Human Services (Parts 300—399)
        IV
        Office of Refugee Resettlement, Administration for Children and Families, Department of Health and Human Services (Parts 400—499)
        V
        Foreign Claims Settlement Commission of the United States, Department of Justice (Parts 500—599)
        VI
        National Science Foundation (Parts 600—699)
        VII
        Commission on Civil Rights (Parts 700—799)
        VIII
        Office of Personnel Management (Parts 800—899)
        IX
        Denali Commission (Parts 900—999)
        X
        Office of Community Services, Administration for Children and Families, Department of Health and Human Services (Parts 1000—1099)
        XI
        National Foundation on the Arts and the Humanities (Parts 1100—1199)
        XII
        Corporation for National and Community Service (Parts 1200—1299)
        XIII
        Administration for Children and Families, Department of Health and Human Services (Parts 1300—1399)
        XVI
        Legal Services Corporation (Parts 1600—1699)
        XVII
        National Commission on Libraries and Information Science (Parts 1700—1799)
        XVIII
        Harry S. Truman Scholarship Foundation (Parts 1800—1899)
        XXI
        Commission of Fine Arts (Parts 2100—2199)
        XXIII
        Arctic Research Commission (Parts 2300—2399)
        XXIV
        James Madison Memorial Fellowship Foundation (Parts 2400—2499)
        XXV
        Corporation for National and Community Service (Parts 2500—2599)

        Title 46—Shipping
        I
        Coast Guard, Department of Homeland Security (Parts 1—199)
        II
        Maritime Administration, Department of Transportation (Parts 200—399)
        III
        Coast Guard (Great Lakes Pilotage), Department of Homeland Security (Parts 400—499)
        IV
        Federal Maritime Commission (Parts 500—599)

        Title 47—Telecommunication
        I
        Federal Communications Commission (Parts 0—199)
        II
        Office of Science and Technology Policy and National Security Council (Parts 200—299)
        III

        National Telecommunications and Information Administration, Department of Commerce (Parts 300—399)

        IV
        National Telecommunications and Information Administration, Department of Commerce, and National Highway Traffic Safety Administration, Department of Transportation (Parts 400—499)
        V
        The First Responder Network Authority (Parts 500—599)

        Title 48—Federal Acquisition Regulations System
        1
        Federal Acquisition Regulation (Parts 1—99)
        2
        Defense Acquisition Regulations System, Department of Defense (Parts 200—299)
        3
        Department of Health and Human Services (Parts 300—399)
        4
        Department of Agriculture (Parts 400—499)
        5
        General Services Administration (Parts 500—599)
        6
        Department of State (Parts 600—699)
        7
        Agency for International Development (Parts 700—799)
        8
        Department of Veterans Affairs (Parts 800—899)
        9
        Department of Energy (Parts 900—999)
        10
        Department of the Treasury (Parts 1000—1099)
        12
        Department of Transportation (Parts 1200—1299)
        13
        Department of Commerce (Parts 1300—1399)
        14
        Department of the Interior (Parts 1400—1499)
        15
        Environmental Protection Agency (Parts 1500—1599)
        16
        Office of Personnel Management, Federal Employees Health Benefits Acquisition Regulation (Parts 1600—1699)
        17
        Office of Personnel Management (Parts 1700—1799)
        18
        National Aeronautics and Space Administration (Parts 1800—1899)
        19
        Broadcasting Board of Governors (Parts 1900—1999)
        20
        Nuclear Regulatory Commission (Parts 2000—2099)
        21
        Office of Personnel Management, Federal Employees Group Life Insurance Federal Acquisition Regulation (Parts 2100—2199)
        23
        Social Security Administration (Parts 2300—2399)
        24
        Department of Housing and Urban Development (Parts 2400—2499)
        25
        National Science Foundation (Parts 2500—2599)
        28
        Department of Justice (Parts 2800—2899)
        29
        Department of Labor (Parts 2900—2999)
        30
        Department of Homeland Security, Homeland Security Acquisition Regulation (HSAR) (Parts 3000—3099)
        34
        Department of Education Acquisition Regulation (Parts 3400—3499)
        51
        Department of the Army Acquisition Regulations (Parts 5100—5199) [Reserved]
        52
        Department of the Navy Acquisition Regulations (Parts 5200—5299)
        53

        Department of the Air Force Federal Acquisition Regulation Supplement (Parts 5300—5399) [Reserved]

        54
        Defense Logistics Agency, Department of Defense (Parts 5400—5499)
        57
        African Development Foundation (Parts 5700—5799)
        61
        Civilian Board of Contract Appeals, General Services Administration (Parts 6100—6199)
        99
        Cost Accounting Standards Board, Office of Federal Procurement Policy, Office of Management and Budget (Parts 9900—9999)

        Title 49—Transportation
        Subtitle A—Office of the Secretary of Transportation (Parts 1—99)
        Subtitle B—Other Regulations Relating to Transportation
        I
        Pipeline and Hazardous Materials Safety Administration, Department of Transportation (Parts 100—199)
        II
        Federal Railroad Administration, Department of Transportation (Parts 200—299)
        III
        Federal Motor Carrier Safety Administration, Department of Transportation (Parts 300—399)
        IV
        Coast Guard, Department of Homeland Security (Parts 400—499)
        V
        National Highway Traffic Safety Administration, Department of Transportation (Parts 500—599)
        VI
        Federal Transit Administration, Department of Transportation (Parts 600—699)
        VII
        National Railroad Passenger Corporation (AMTRAK) (Parts 700—799)
        VIII
        National Transportation Safety Board (Parts 800—999)
        X
        Surface Transportation Board (Parts 1000—1399)
        XI
        Research and Innovative Technology Administration, Department of Transportation (Parts 1400—1499) [Reserved]
        XII
        Transportation Security Administration, Department of Homeland Security (Parts 1500—1699)

        Title 50—Wildlife and Fisheries
        I
        United States Fish and Wildlife Service, Department of the Interior (Parts 1—199)
        II
        National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Department of Commerce (Parts 200—299)
        III
        International Fishing and Related Activities (Parts 300—399)
        IV
        Joint Regulations (United States Fish and Wildlife Service, Department of the Interior and National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Department of Commerce); Endangered Species Committee Regulations (Parts 400—499)
        V
        Marine Mammal Commission (Parts 500—599)

        VI
        Fishery Conservation and Management, National Oceanic and Atmospheric Administration, Department of Commerce (Parts 600—699)

      Alphabetical List of Agencies Appearing in the CFR
      (Revised as of October 1, 2020)
      Agency
      CFR Title, Subtitle or Chapter
      Administrative Conference of the United States
      1, III
      Advisory Council on Historic Preservation
      36, VIII
      Advocacy and Outreach, Office of
      7, XXV
      Afghanistan Reconstruction, Special Inspector General for
      5, LXXXIII
      African Development Foundation
      22, XV
      Federal Acquisition Regulation
      48, 57
      Agency for International Development
      2, VII; 22, II
      Federal Acquisition Regulation
      48, 7
      Agricultural Marketing Service
      7, I, VIII, IX, X, XI; 9, II
      Agricultural Research Service
      7, V
      Agriculture, Department of
      2, IV; 5, LXXIII
      Advocacy and Outreach, Office of
      7, XXV
      Agricultural Marketing Service
      7, I, VIII, IX, X, XI; 9, II
      Agricultural Research Service
      7, V
      Animal and Plant Health Inspection Service
      7, III; 9, I
      Chief Financial Officer, Office of
      7, XXX
      Commodity Credit Corporation
      7, XIV
      Economic Research Service
      7, XXXVII
      Energy Policy and New Uses, Office of
      2, IX; 7, XXIX
      Environmental Quality, Office of
      7, XXXI
      Farm Service Agency
      7, VII, XVIII
      Federal Acquisition Regulation
      48, 4
      Federal Crop Insurance Corporation
      7, IV
      Food and Nutrition Service
      7, II
      Food Safety and Inspection Service
      9, III
      Foreign Agricultural Service
      7, XV
      Forest Service
      36, II
      Information Resources Management, Office of
      7, XXVII
      Inspector General, Office of
      7, XXVI
      National Agricultural Library
      7, XLI
      National Agricultural Statistics Service
      7, XXXVI
      National Institute of Food and Agriculture
      7, XXXIV
      Natural Resources Conservation Service
      7, VI
      Operations, Office of
      7, XXVIII
      Procurement and Property Management, Office of
      7, XXXII
      Rural Business-Cooperative Service
      7, XVIII, XLII
      Rural Development Administration
      7, XLII
      Rural Housing Service
      7, XVIII, XXXV
      Rural Utilities Service
      7, XVII, XVIII, XLII
      Secretary of Agriculture, Office of
      7, Subtitle A
      Transportation, Office of
      7, XXXIII
      World Agricultural Outlook Board
      7, XXXVIII
      Air Force, Department of
      32, VII
      Federal Acquisition Regulation Supplement
      48, 53
      Air Transportation Stabilization Board
      14, VI
      Alcohol and Tobacco Tax and Trade Bureau
      27, I
      Alcohol, Tobacco, Firearms, and Explosives, Bureau of
      27, II
      AMTRAK
      49, VII
      American Battle Monuments Commission
      36, IV
      American Indians, Office of the Special Trustee
      25, VII
      Animal and Plant Health Inspection Service
      7, III; 9, I
      Appalachian Regional Commission
      5, IX
      Architectural and Transportation Barriers Compliance Board
      36, XI

      Arctic Research Commission
      45, XXIII
      Armed Forces Retirement Home
      5, XI; 38, II
      Army, Department of
      32, V
      Engineers, Corps of
      33, II; 36, III
      Federal Acquisition Regulation
      48, 51
      Benefits Review Board
      20, VII
      Bilingual Education and Minority Languages Affairs, Office of
      34, V
      Blind or Severely Disabled, Committee for Purchase from People Who Are
      41, 51
      Broadcasting Board of Governors
      22, V
      Federal Acquisition Regulation
      48, 19
      Career, Technical, and Adult Education, Office of
      34, IV
      Census Bureau
      15, I
      Centers for Medicare & Medicaid Services
      42, IV
      Central Intelligence Agency
      32, XIX
      Chemical Safety and Hazard Investigation Board
      40, VI
      Chief Financial Officer, Office of
      7, XXX
      Child Support Enforcement, Office of
      45, III
      Children and Families, Administration for
      45, II, III, IV, X, XIII
      Civil Rights, Commission on
      5, LXVIII; 45, VII
      Civil Rights, Office for
      34, I
      Coast Guard
      33, I; 46, I; 49, IV
      Coast Guard (Great Lakes Pilotage)
      46, III
      Commerce, Department of
      2, XIII; 44, IV; 50, VI
      Census Bureau
      15, I
      Economic Analysis, Bureau of
      15, VIII
      Economic Development Administration
      13, III
      Emergency Management and Assistance
      44, IV
      Federal Acquisition Regulation
      48, 13
      Foreign-Trade Zones Board
      15, IV
      Industry and Security, Bureau of
      15, VII
      International Trade Administration
      15, III; 19, III
      National Institute of Standards and Technology
      15, II; 37, IV
      National Marine Fisheries Service
      50, II, IV
      National Oceanic and Atmospheric Administration
      15, IX; 50, II, III, IV, VI
      National Technical Information Service
      15, XI
      National Telecommunications and Information Administration
      15, XXIII; 47, III, IV
      National Weather Service
      15, IX
      Patent and Trademark Office, United States
      37, I
      Secretary of Commerce, Office of
      15, Subtitle A
      Commercial Space Transportation
      14, III
      Commodity Credit Corporation
      7, XIV
      Commodity Futures Trading Commission
      5, XLI; 17, I
      Community Planning and Development, Office of Assistant Secretary for
      24, V, VI
      Community Services, Office of
      45, X
      Comptroller of the Currency
      12, I
      Construction Industry Collective Bargaining Commission
      29, IX
      Consumer Financial Protection Bureau
      5, LXXXIV; 12, X
      Consumer Product Safety Commission
      5, LXXI; 16, II
      Copyright Royalty Board
      37, III
      Corporation for National and Community Service
      2, XXII; 45, XII, XXV
      Cost Accounting Standards Board
      48, 99
      Council on Environmental Quality
      40, V
      Council of the Inspectors General on Integrity and Efficiency
      5, XCVIII
      Court Services and Offender Supervision Agency for the District of Columbia
      5, LXX; 28, VIII
      Customs and Border Protection
      19, I
      Defense, Department of
      2, XI; 5, XXVI; 32, Subtitle A; 40, VII
      Advanced Research Projects Agency
      32, I
      Air Force Department
      32, VII
      Army Department
      32, V; 33, II; 36, III; 48, 51
      Defense Acquisition Regulations System
      48, 2
      Defense Intelligence Agency
      32, I

      Defense Logistics Agency
      32, I, XII; 48, 54
      Engineers, Corps of
      33, II; 36, III
      National Imagery and Mapping Agency
      32, I
      Navy, Department of
      32, VI; 48, 52
      Secretary of Defense, Office of
      2, XI; 32, I
      Defense Contract Audit Agency
      32, I
      Defense Intelligence Agency
      32, I
      Defense Logistics Agency
      32, XII; 48, 54
      Defense Nuclear Facilities Safety Board
      10, XVII
      Delaware River Basin Commission
      18, III
      Denali Commission
      45, IX
      Disability, National Council on
      5, C; 34, XII
      District of Columbia, Court Services and Offender Supervision Agency for the
      5, LXX; 28, VIII
      Drug Enforcement Administration
      21, II
      East-West Foreign Trade Board
      15, XIII
      Economic Analysis, Bureau of
      15, VIII
      Economic Development Administration
      13, III
      Economic Research Service
      7, XXXVII
      Education, Department of
      2, XXXIV; 5, LIII
      Bilingual Education and Minority Languages Affairs, Office of
      34, V
      Career, Technical, and Adult Education, Office of
      34, IV
      Civil Rights, Office for
      34, I
      Educational Research and Improvement, Office of
      34, VII
      Elementary and Secondary Education, Office of
      34, II
      Federal Acquisition Regulation
      48, 34
      Postsecondary Education, Office of
      34, VI
      Secretary of Education, Office of
      34, Subtitle A
      Special Education and Rehabilitative Services, Office of
      34, III
      Educational Research and Improvement, Office of
      34, VII
      Election Assistance Commission
      2, LVIII; 11, II
      Elementary and Secondary Education, Office of
      34, II
      Emergency Oil and Gas Guaranteed Loan Board
      13, V
      Emergency Steel Guarantee Loan Board
      13, IV
      Employee Benefits Security Administration
      29, XXV
      Employees' Compensation Appeals Board
      20, IV
      Employees Loyalty Board
      5, V
      Employment and Training Administration
      20, V
      Employment Policy, National Commission for
      1, IV
      Employment Standards Administration
      20, VI
      Endangered Species Committee
      50, IV
      Energy, Department of
      2, IX; 5, XXIII; 10, II, III, X
      Federal Acquisition Regulation
      48, 9
      Federal Energy Regulatory Commission
      5, XXIV; 18, I
      Property Management Regulations
      41, 109
      Energy, Office of
      7, XXIX
      Engineers, Corps of
      33, II; 36, III
      Engraving and Printing, Bureau of
      31, VI
      Environmental Protection Agency
      2, XV; 5, LIV; 40, I, IV, VII
      Federal Acquisition Regulation
      48, 15
      Property Management Regulations
      41, 115
      Environmental Quality, Office of
      7, XXXI
      Equal Employment Opportunity Commission
      5, LXII; 29, XIV
      Equal Opportunity, Office of Assistant Secretary for
      24, I
      Executive Office of the President
      3, I
      Environmental Quality, Council on
      40, V
      Management and Budget, Office of
      2, Subtitle A; 5, III, LXXVII; 14, VI; 48, 99
      National Drug Control Policy, Office of
      2, XXXVI; 21, III
      National Security Council
      32, XXI; 47, II
      Presidential Documents
      3
      Science and Technology Policy, Office of
      32, XXIV; 47, II
      Trade Representative, Office of the United States
      15, XX
      Export-Import Bank of the United States
      2, XXXV; 5, LII; 12, IV

      Family Assistance, Office of
      45, II
      Farm Credit Administration
      5, XXXI; 12, VI
      Farm Credit System Insurance Corporation
      5, XXX; 12, XIV
      Farm Service Agency
      7, VII, XVIII
      Federal Acquisition Regulation
      48, 1
      Federal Aviation Administration
      14, I
      Commercial Space Transportation
      14, III
      Federal Claims Collection Standards
      31, IX
      Federal Communications Commission
      5, XXIX; 47, I
      Federal Contract Compliance Programs, Office of
      41, 60
      Federal Crop Insurance Corporation
      7, IV
      Federal Deposit Insurance Corporation
      5, XXII; 12, III
      Federal Election Commission
      5, XXXVII; 11, I
      Federal Emergency Management Agency
      44, I
      Federal Employees Group Life Insurance Federal Acquisition Regulation
      48, 21
      Federal Employees Health Benefits Acquisition Regulation
      48, 16
      Federal Energy Regulatory Commission
      5, XXIV; 18, I
      Federal Financial Institutions Examination Council
      12, XI
      Federal Financing Bank
      12, VIII
      Federal Highway Administration
      23, I, II
      Federal Home Loan Mortgage Corporation
      1, IV
      Federal Housing Enterprise Oversight Office
      12, XVII
      Federal Housing Finance Agency
      5, LXXX; 12, XII
      Federal Labor Relations Authority
      5, XIV, XLIX; 22, XIV
      Federal Law Enforcement Training Center
      31, VII
      Federal Management Regulation
      41, 102
      Federal Maritime Commission
      46, IV
      Federal Mediation and Conciliation Service
      29, XII
      Federal Mine Safety and Health Review Commission
      5, LXXIV; 29, XXVII
      Federal Motor Carrier Safety Administration
      49, III
      Federal Prison Industries, Inc.
      28, III
      Federal Procurement Policy Office
      48, 99
      Federal Property Management Regulations
      41, 101
      Federal Railroad Administration
      49, II
      Federal Register, Administrative Committee of
      1, I
      Federal Register, Office of
      1, II
      Federal Reserve System
      12, II
      Board of Governors
      5, LVIII
      Federal Retirement Thrift Investment Board
      5, VI, LXXVI
      Federal Service Impasses Panel
      5, XIV
      Federal Trade Commission
      5, XLVII; 16, I
      Federal Transit Administration
      49, VI
      Federal Travel Regulation System
      41, Subtitle F
      Financial Crimes Enforcement Network
      31, X
      Financial Research Office
      12, XVI
      Financial Stability Oversight Council
      12, XIII
      Fine Arts, Commission of
      45, XXI
      Fiscal Service
      31, II
      Fish and Wildlife Service, United States
      50, I, IV
      Food and Drug Administration
      21, I
      Food and Nutrition Service
      7, II
      Food Safety and Inspection Service
      9, III
      Foreign Agricultural Service
      7, XV
      Foreign Assets Control, Office of
      31, V
      Foreign Claims Settlement Commission of the United States
      45, V
      Foreign Service Grievance Board
      22, IX
      Foreign Service Impasse Disputes Panel
      22, XIV
      Foreign Service Labor Relations Board
      22, XIV
      Foreign-Trade Zones Board
      15, IV
      Forest Service
      36, II
      General Services Administration
      5, LVII; 41, 105
      Contract Appeals, Board of
      48, 61
      Federal Acquisition Regulation
      48, 5
      Federal Management Regulation
      41, 102
      Federal Property Management Regulations
      41, 101
      Federal Travel Regulation System
      41, Subtitle F

      General
      41, 300
      Payment From a Non-Federal Source for Travel Expenses
      41, 304
      Payment of Expenses Connected With the Death of Certain Employees
      41, 303
      Relocation Allowances
      41, 302
      Temporary Duty (TDY) Travel Allowances
      41, 301
      Geological Survey
      30, IV
      Government Accountability Office
      4, I
      Government Ethics, Office of
      5, XVI
      Government National Mortgage Association
      24, III
      Grain Inspection, Packers and Stockyards Administration
      7, VIII; 9, II
      Gulf Coast Ecosystem Restoration Council
      2, LIX; 40, VIII
      Harry S. Truman Scholarship Foundation
      45, XVIII
      Health and Human Services, Department of
      2, III; 5, XLV; 45, Subtitle A
      Centers for Medicare & Medicaid Services
      42, IV
      Child Support Enforcement, Office of
      45, III
      Children and Families, Administration for
      45, II, III, IV, X, XIII
      Community Services, Office of
      45, X
      Family Assistance, Office of
      45, II
      Federal Acquisition Regulation
      48, 3
      Food and Drug Administration
      21, I
      Indian Health Service
      25, V
      Inspector General (Health Care), Office of
      42, V
      Public Health Service
      42, I
      Refugee Resettlement, Office of
      45, IV
      Homeland Security, Department of
      2, XXX; 5, XXXVI; 6, I; 8, I
      Coast Guard
      33, I; 46, I; 49, IV
      Coast Guard (Great Lakes Pilotage)
      46, III
      Customs and Border Protection
      19, I
      Federal Emergency Management Agency
      44, I
      Human Resources Management and Labor Relations Systems
      5, XCVII
      Immigration and Customs Enforcement Bureau
      19, IV
      Transportation Security Administration
      49, XII
      HOPE for Homeowners Program, Board of Directors of
      24, XXIV
      Housing, Office of, and Multifamily Housing Assistance Restructuring, Office of
      24, IV
      Housing and Urban Development, Department of
      2, XXIV; 5, LXV; 24, Subtitle B
      Community Planning and Development, Office of Assistant Secretary for
      24, V, VI
      Equal Opportunity, Office of Assistant Secretary for
      24, I
      Federal Acquisition Regulation
      48, 24
      Federal Housing Enterprise Oversight, Office of
      12, XVII
      Government National Mortgage Association
      24, III
      Housing—Federal Housing Commissioner, Office of Assistant Secretary for
      24, II, VIII, X, XX
      Housing, Office of, and Multifamily Housing Assistance Restructuring, Office of
      24, IV
      Inspector General, Office of
      24, XII
      Public and Indian Housing, Office of Assistant Secretary for
      24, IX
      Secretary, Office of
      24, Subtitle A, VII
      Housing—Federal Housing Commissioner, Office of Assistant Secretary for
      24, II, VIII, X, XX
      Housing, Office of, and Multifamily Housing Assistance Restructuring, Office of
      24, IV
      Immigration and Customs Enforcement Bureau
      19, IV
      Immigration Review, Executive Office for
      8, V
      Independent Counsel, Office of
      28, VII
      Independent Counsel, Offices of
      28, VI
      Indian Affairs, Bureau of
      25, I, V
      Indian Affairs, Office of the Assistant Secretary
      25, VI
      Indian Arts and Crafts Board
      25, II
      Indian Health Service
      25, V
      Industry and Security, Bureau of
      15, VII

      Information Resources Management, Office of
      7, XXVII
      Information Security Oversight Office, National Archives and Records Administration
      32, XX
      Inspector General
      Agriculture Department
      7, XXVI
      Health and Human Services Department
      42, V
      Housing and Urban Development Department
      24, XII, XV
      Institute of Peace, United States
      22, XVII
      Inter-American Foundation
      5, LXIII; 22, X
      Interior, Department of
      2, XIV
      American Indians, Office of the Special Trustee
      25, VII
      Endangered Species Committee
      50, IV
      Federal Acquisition Regulation
      48, 14
      Federal Property Management Regulations System
      41, 114
      Fish and Wildlife Service, United States
      50, I, IV
      Geological Survey
      30, IV
      Indian Affairs, Bureau of
      25, I, V
      Indian Affairs, Office of the Assistant Secretary
      25, VI
      Indian Arts and Crafts Board
      25, II
      Land Management, Bureau of
      43, II
      National Indian Gaming Commission
      25, III
      National Park Service
      36, I
      Natural Resource Revenue, Office of
      30, XII
      Ocean Energy Management, Bureau of
      30, V
      Reclamation, Bureau of
      43, I
      Safety and Enforcement Bureau, Bureau of
      30, II
      Secretary of the Interior, Office of
      2, XIV; 43, Subtitle A
      Surface Mining Reclamation and Enforcement, Office of
      30, VII
      Internal Revenue Service
      26, I
      International Boundary and Water Commission, United States and Mexico, United States Section
      22, XI
      International Development, United States Agency for
      22, II
      Federal Acquisition Regulation
      48, 7
      International Development Cooperation Agency, United States
      22, XII
      International Development Finance Corporation, U.S.
      5, XXXIII; 22, VII
      International Joint Commission, United States and Canada
      22, IV
      International Organizations Employees Loyalty Board
      5, V
      International Trade Administration
      15, III; 19, III
      International Trade Commission, United States
      19, II
      Interstate Commerce Commission
      5, XL
      Investment Security, Office of
      31, VIII
      James Madison Memorial Fellowship Foundation
      45, XXIV
      Japan-United States Friendship Commission
      22, XVI
      Joint Board for the Enrollment of Actuaries
      20, VIII
      Justice, Department of
      2, XXVIII; 5, XXVIII; 28, I, XI; 40, IV
      Alcohol, Tobacco, Firearms, and Explosives, Bureau of
      27, II
      Drug Enforcement Administration
      21, II
      Federal Acquisition Regulation
      48, 28
      Federal Claims Collection Standards
      31, IX
      Federal Prison Industries, Inc.
      28, III
      Foreign Claims Settlement Commission of the United States
      45, V
      Immigration Review, Executive Office for
      8, V
      Independent Counsel, Offices of
      28, VI
      Prisons, Bureau of
      28, V
      Property Management Regulations
      41, 128
      Labor, Department of
      2, XXIX; 5, XLII
      Benefits Review Board
      20, VII
      Employee Benefits Security Administration
      29, XXV
      Employees' Compensation Appeals Board
      20, IV
      Employment Standards Administration
      20, VI
      Employment and Training Administration
      20, V
      Federal Acquisition Regulation
      48, 29
      Federal Contract Compliance Programs, Office of
      41, 60
      Federal Procurement Regulations System
      41, 50

      Labor-Management Standards, Office of
      29, II, IV
      Mine Safety and Health Administration
      30, I
      Occupational Safety and Health Administration
      29, XVII
      Public Contracts
      41, 50
      Secretary of Labor, Office of
      29, Subtitle A
      Veterans' Employment and Training Service, Office of the Assistant Secretary for
      41, 61; 20, IX
      Wage and Hour Division
      29, V
      Workers' Compensation Programs, Office of
      20, I, VII
      Labor-Management Standards, Office of
      29, II, IV
      Land Management, Bureau of
      43, II
      Legal Services Corporation
      45, XVI
      Libraries and Information Science, National Commission on
      45, XVII
      Library of Congress
      36, VII
      Copyright Royalty Board
      37, III
      U.S. Copyright Office
      37, II
      Management and Budget, Office of
      5, III, LXXVII; 14, VI; 48, 99
      Marine Mammal Commission
      50, V
      Maritime Administration
      46, II
      Merit Systems Protection Board
      5, II, LXIV
      Micronesian Status Negotiations, Office for
      32, XXVII
      Military Compensation and Retirement Modernization Commission
      5, XCIX
      Millennium Challenge Corporation
      22, XIII
      Mine Safety and Health Administration
      30, I
      Minority Business Development Agency
      15, XIV
      Miscellaneous Agencies
      1, IV
      Monetary Offices
      31, I
      Morris K. Udall Scholarship and Excellence in National Environmental Policy Foundation
      36, XVI
      Museum and Library Services, Institute of
      2, XXXI
      National Aeronautics and Space Administration
      2, XVIII; 5, LIX; 14, V
      Federal Acquisition Regulation
      48, 18
      National Agricultural Library
      7, XLI
      National Agricultural Statistics Service
      7, XXXVI
      National and Community Service, Corporation for
      2, XXII; 45, XII, XXV
      National Archives and Records Administration
      2, XXVI; 5, LXVI; 36, XII
      Information Security Oversight Office
      32, XX
      National Capital Planning Commission
      1, IV, VI
      National Counterintelligence Center
      32, XVIII
      National Credit Union Administration
      5, LXXXVI; 12, VII
      National Crime Prevention and Privacy Compact Council
      28, IX
      National Drug Control Policy, Office of
      2, XXXVI; 21, III
      National Endowment for the Arts
      2, XXXII
      National Endowment for the Humanities
      2, XXXIII
      National Foundation on the Arts and the Humanities
      45, XI
      National Geospatial-Intelligence Agency
      32, I
      National Highway Traffic Safety Administration
      23, II, III; 47, VI; 49, V
      National Imagery and Mapping Agency
      32, I
      National Indian Gaming Commission
      25, III
      National Institute of Food and Agriculture
      7, XXXIV
      National Institute of Standards and Technology
      15, II; 37, IV
      National Intelligence, Office of Director of
      5, IV; 32, XVII
      National Labor Relations Board
      5, LXI; 29, I
      National Marine Fisheries Service
      50, II, IV
      National Mediation Board
      5, CI; 29, X
      National Oceanic and Atmospheric Administration
      15, IX; 50, II, III, IV, VI
      National Park Service
      36, I
      National Railroad Adjustment Board
      29, III
      National Railroad Passenger Corporation (AMTRAK)
      49, VII
      National Science Foundation
      2, XXV; 5, XLIII; 45, VI
      Federal Acquisition Regulation
      48, 25
      National Security Council
      32, XXI
      National Security Council and Office of Science and Technology Policy
      47, II

      National Technical Information Service
      15, XI
      National Telecommunications and Information Administration
      15, XXIII; 47, III, IV, V
      National Transportation Safety Board
      49, VIII
      Natural Resource Revenue, Office of
      30, XII
      Natural Resources Conservation Service
      7, VI
      Navajo and Hopi Indian Relocation, Office of
      25, IV
      Navy, Department of
      32, VI
      Federal Acquisition Regulation
      48, 52
      Neighborhood Reinvestment Corporation
      24, XXV
      Northeast Interstate Low-Level Radioactive Waste Commission
      10, XVIII
      Nuclear Regulatory Commission
      2, XX; 5, XLVIII; 10, I
      Federal Acquisition Regulation
      48, 20
      Occupational Safety and Health Administration
      29, XVII
      Occupational Safety and Health Review Commission
      29, XX
      Ocean Energy Management, Bureau of
      30, V
      Oklahoma City National Memorial Trust
      36, XV
      Operations Office
      7, XXVIII
      Patent and Trademark Office, United States
      37, I
      Payment From a Non-Federal Source for Travel Expenses
      41, 304
      Payment of Expenses Connected With the Death of Certain Employees
      41, 303
      Peace Corps
      2, XXXVII; 22, III
      Pennsylvania Avenue Development Corporation
      36, IX
      Pension Benefit Guaranty Corporation
      29, XL
      Personnel Management, Office of
      5, I, IV, XXXV; 45, VIII
      Federal Acquisition Regulation
      48, 17
      Federal Employees Group Life Insurance Federal Acquisition Regulation
      48, 21
      Federal Employees Health Benefits Acquisition Regulation
      48, 16
      Human Resources Management and Labor Relations Systems, Department of Homeland Security
      5, XCVII
      Pipeline and Hazardous Materials Safety Administration
      49, I
      Postal Regulatory Commission
      5, XLVI; 39, III
      Postal Service, United States
      5, LX; 39, I
      Postsecondary Education, Office of
      34, VI
      President's Commission on White House Fellowships
      1, IV
      Presidential Documents
      3
      Presidio Trust
      36, X
      Prisons, Bureau of
      28, V
      Privacy and Civil Liberties Oversight Board
      6, X
      Procurement and Property Management, Office of
      7, XXXII
      Public and Indian Housing, Office of Assistant Secretary for
      24, IX
      Public Contracts, Department of Labor
      41, 50
      Public Health Service
      42, I
      Railroad Retirement Board
      20, II
      Reclamation, Bureau of
      43, I
      Refugee Resettlement, Office of
      45, IV
      Relocation Allowances
      41, 302
      Research and Innovative Technology Administration
      49, XI
      Rural Business-Cooperative Service
      7, XVIII, XLII
      Rural Development Administration
      7, XLII
      Rural Housing Service
      7, XVIII, XXXV
      Rural Utilities Service
      7, XVII, XVIII, XLII
      Safety and Environmental Enforcement, Bureau of
      30, II
      Saint Lawrence Seaway Development Corporation
      33, IV
      Science and Technology Policy, Office of
      32, XXIV
      Science and Technology Policy, Office of, and National Security Council
      47, II
      Secret Service
      31, IV
      Securities and Exchange Commission
      5, XXXIV; 17, II
      Selective Service System
      32, XVI
      Small Business Administration
      2, XXVII; 13, I
      Smithsonian Institution
      36, V
      Social Security Administration
      2, XXIII; 20, III; 48, 23
      Soldiers' and Airmen's Home, United States
      5, XI

      Special Counsel, Office of
      5, VIII
      Special Education and Rehabilitative Services, Office of
      34, III
      State, Department of
      2, VI; 22, I; 28, XI
      Federal Acquisition Regulation
      48, 6
      Surface Mining Reclamation and Enforcement, Office of
      30, VII
      Surface Transportation Board
      49, X
      Susquehanna River Basin Commission
      18, VIII
      Tennessee Valley Authority
      5, LXIX; 18, XIII
      Trade Representative, United States, Office of
      15, XX
      Transportation, Department of
      2, XII; 5, L
      Commercial Space Transportation
      14, III
      Emergency Management and Assistance
      44, IV
      Federal Acquisition Regulation
      48, 12
      Federal Aviation Administration
      14, I
      Federal Highway Administration
      23, I, II
      Federal Motor Carrier Safety Administration
      49, III
      Federal Railroad Administration
      49, II
      Federal Transit Administration
      49, VI
      Maritime Administration
      46, II
      National Highway Traffic Safety Administration
      23, II, III; 47, IV; 49, V
      Pipeline and Hazardous Materials Safety Administration
      49, I
      Saint Lawrence Seaway Development Corporation
      33, IV
      Secretary of Transportation, Office of
      14, II; 49, Subtitle A
      Transportation Statistics Bureau
      49, XI
      Transportation, Office of
      7, XXXIII
      Transportation Security Administration
      49, XII
      Transportation Statistics Bureau
      49, XI
      Travel Allowances, Temporary Duty (TDY)
      41, 301
      Treasury, Department of the
      2, X; 5, XXI; 12, XV; 17, IV; 31, IX
      Alcohol and Tobacco Tax and Trade Bureau
      27, I
      Community Development Financial Institutions Fund
      12, XVIII
      Comptroller of the Currency
      12, I
      Customs and Border Protection
      19, I
      Engraving and Printing, Bureau of
      31, VI
      Federal Acquisition Regulation
      48, 10
      Federal Claims Collection Standards
      31, IX
      Federal Law Enforcement Training Center
      31, VII
      Financial Crimes Enforcement Network
      31, X
      Fiscal Service
      31, II
      Foreign Assets Control, Office of
      31, V
      Internal Revenue Service
      26, I
      Investment Security, Office of
      31, VIII
      Monetary Offices
      31, I
      Secret Service
      31, IV
      Secretary of the Treasury, Office of
      31, Subtitle A
      Truman, Harry S. Scholarship Foundation
      45, XVIII
      United States and Canada, International Joint Commission
      22, IV
      United States and Mexico, International Boundary and Water Commission, United States Section
      22, XI
      U.S. Copyright Office
      37, II
      Utah Reclamation Mitigation and Conservation Commission
      43, III
      Veterans Affairs, Department of
      2, VIII; 38, I
      Federal Acquisition Regulation
      48, 8
      Veterans' Employment and Training Service, Office of the Assistant Secretary for
      41, 61; 20, IX
      Vice President of the United States, Office of
      32, XXVIII
      Wage and Hour Division
      29, V
      Water Resources Council
      18, VI
      Workers' Compensation Programs, Office of
      20, I, VII
      World Agricultural Outlook Board
      7, XXXVIII

      46 CFR (10-1-20 Edition)
      List of CFR Sections Affected

      List of CFR Sections Affected

      All changes in this volume of the Code of Federal Regulations (CFR) that were made by documents published in the Federal Register since January 1, 2015 are enumerated in the following list. Entries indicate the nature of the changes effected. Page numbers refer to Federal Register pages. The user should consult the entries for chapters, parts and subparts as well as sections for revisions.

      For changes to this volume of the CFR prior to this listing, consult the annual edition of the monthly List of CFR Sections Affected (LSA). The LSA is available at www.govinfo.gov. For changes to this volume of the CFR prior to 2001, see the “List of CFR Sections Affected, 1949-1963, 1964-1972, 1973-1985, and 1986-2000” published in 11 separate volumes. The “List of CFR Sections Affected 1986-2000” is available at www.govinfo.gov.

        2015
        46 CFR
        80 FR
        Page
        Chapter I
        148.11 (b) table amended
        5336

        2016
        46 CFR
        81 FR
        Page
        Chapter I
        136—144 (Subchapter M) Added
        40101
        Regulation at 81 FR 40101 confirmed
        46848
        143.300 (d) corrected
        47312
        144.105 (c) corrected
        47312
        144.135 (c) corrected
        47312
        147.1 Heading and (d) revised
        48272
        147.7 (d), (e) and (f) redesignated as (e), (f) and (g) and revised; new (d) added
        48272
        147.65 Revised
        48272

        2017
        46 CFR
        82 FR
        Page
        Chapter I
        153.9 (b) introductory text amended
        35092
        154.22 (a) introductory text amended
        35092

        2018-2019
        (No regulations published)

        2020
        (Regulations published from January 1, 2020, through October 1, 2020)
        46 CFR
        85 FR
        Page
        Chapter I
        150.120 Table heading amended
        21674
        150.130 (a) introductory text amended
        21674
        150.140 Heading revised
        21674
        150 Table I amended
        21674
        150 Table II amended
        21700
        150 Appendix I amended
        21724
        153 Table 2 amended
        21728

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