reglab/statecodes huggingface dataset:
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 90 - Administration of the Boiler and Pressure Vessel Program › Rule 875-90.9 - Special Inspector Commissions

Current through Register Vol. 47, No. 3, July 24, 2024
(1)
Definition of "reputable
				insurance company."
As used in this rule, "reputable insurance
				company" means a company recognized by the Iowa insurance division as a
				licensed insurer, a risk retention group, an alien surplus lines insurer, or a
				surplus lines insurer.
(2)
Application.
a. A person
				applying for a new or renewed commission shall complete, sign, and submit to
				the division with the required fee the form entitled "Application for Boiler
				and Pressure Vessel Special Inspector Commission" provided by the division.
				Additionally, the applicant shall submit a copy of the applicant's current
				National Board work card with each application.
b. An applicant for a new Iowa special
				inspector commission shall schedule a meeting with the chief boiler inspector
				to discuss Iowa law and the responsibilities, expectations, and requirements
				for a special inspector.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 90 - Administration of the Boiler and Pressure Vessel Program › Rule 875-90.10 - Quality Reviews, Surveys and Audits

Current through Register Vol. 47, No. 3, July 24, 2024
(1) An entity that manufactures or repairs
				boilers, pressure vessels or related equipment may request quality reviews,
				surveys or audits from certifying organizations such as the ASME or the
				National Board. The division is authorized to conduct the quality reviews,
				surveys or audits. If the division performs the service, the manufacturer or
				repairer shall pay all applicable expenses.
(2) Quality reviews, surveys and audits for
				certification to the National Board or ASME standards shall be conducted only
				by a person or organization designated by the labor commissioner Any person or
				organization seeking this designation on behalf of the division shall provide
				documented evidence of training, examination, experience, and certification for
				the type of reviews, surveys and audits to be performed. The labor commissioner
				shall have final authority to determine qualifications and designations.
a.
Assessing quality
				programs.
The division recognizes the ASME and the National Board as
				qualified designees for conducting quality reviews, surveys and audits that
				lead to ASME or National Board program certification.
b.
ISO 9000 assessments.
The division recognizes the ASME and the National Board:
(1) To be acceptable ISO 9000 registrars of
				quality systems for boilers and pressure vessels and the related
				pressure-technology equipment industry;
(2) To certify auditors and lead auditors to
				the requirements of ISO 10011-2 1991(E), Annex A; and
(3) To conduct ISO 9000 assessments for the
				boiler, pressure vessel, and related pressure-technology equipment
				industry.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 90 - Administration of the Boiler and Pressure Vessel Program › Rule 875-90.11 - Reporting Requirements

Current through Register Vol. 47, No. 3, July 24, 2024
(1)
Control and safety device reports.
Documentation required by
				this subrule shall be kept on site and shall be available for inspection by the
				division or special inspectors. The owner or user shall mail a copy of the
				documentation required by this subrule to the division.
a. The requirements of this subrule do not
				apply to:
(1) Rescinded IAB 7/18/18,
				effective 9/1/18.
(2) An object
				within the scope of 875-Chapter 96;
(3) A hot water supply boiler covered by ASME
				Section IV, Part HLW; or
(4) A
				boiler with a fuel input rating greater than or equal to 12,500,000 Btu per
				hour, falling within the scope of NFPA 85, Boiler and Combustion Systems
				Hazards Code.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 90 - Administration of the Boiler and Pressure Vessel Program › Rule 875-90.12 - Publications Available for Review

Current through Register Vol. 47, No. 3, July 24, 2024
Pursuant to Iowa Code section
				  89.5(3),
				  the standards, codes, and publications adopted by reference in these rules are
				  available for review in the office of the Division of Labor Services, 150 Des
				  Moines Street, Des Moines, Iowa.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 90 - Administration of the Boiler and Pressure Vessel Program › Rule 875-90.13 - Notice Prior to Installation

Current through Register Vol. 47, No. 3, July 24, 2024
Written notice of intent to install objects subject to the
				  jurisdiction of Iowa Code chapter 89 shall be provided to the labor
				  commissioner at least ten days before installation. Written notice shall be
				  accomplished by completing and submitting to the labor commissioner
				  either:
1. The form designated by the
				labor commissioner, or
2. The
				National Board's Boiler Installation Report, I-1.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 90 - Administration of the Boiler and Pressure Vessel Program › Rule 875-90.14 - Temporary Objects

Current through Register Vol. 47, No. 3, July 24, 2024
(1)
Certificate to operate.
A certificate to operate a temporary
				object shall expire one year from the date of issuance or when the temporary
				object is disconnected.
(2)
Inspections.
a. An internal
				inspection and hydrostatic test pursuant to the National Board Inspection Code
				shall be performed on site at a new location before a temporary object is
				started up. Once a temporary object has been placed into normal operation, an
				external operating inspection shall be performed.
b. An inspection on a temporary object that
				remains at the same location and is in continuous service longer than one year
				shall be performed according to the inspection schedule of Iowa Code section
				89.3.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 90 - Administration of the Boiler and Pressure Vessel Program › Rule 875-90.15 - Conversion of a Power Boiler to a Low-pressure Boiler

Current through Register Vol. 47, No. 3, July 24, 2024
The following requirements apply to the conversion of a
				  power boiler to a low-pressure boiler. The owner shall comply with the
				  requirements of subrule 90.15(1) for each conversion. In addition, the owner
				  shall comply with the requirements of subrule 90.15(2) if the converted object
				  will be located outside of a place of public assembly or with the requirements
				  of subrule 90.15(3) if the converted object will be located in a place of
				  public assembly.
(1)
General
				requirements.
a. The owner shall
				provide to the labor commissioner written notice of intent to convert a power
				boiler to a low-pressure boiler prior to conversion. The required form for a
				notice of conversion is available at iowaboilers.gov. At a minimum the notice
				shall contain the following:
(1) Address,
				uses, and owner of the building where the boiler is located.
(2) The Iowa identification number assigned
				to the boiler.
(3) Name and contact
				information for the person completing the notice.
(4) Name and contact information for the
				contractor or other person planning to perform the conversion.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 90 - Administration of the Boiler and Pressure Vessel Program › Rule 875-90.16 - Definitions Regarding Objects

Current through Register Vol. 47, No. 3, July 24, 2024
The following definitions shall govern classification and
				  status of objects in Iowa. To the extent they do not conflict with the
				  definitions contained in Iowa Code chapter 89, the definitions in this rule
				  shall be applicable to the rules contained in 875-Chapters 90 to 96.
"Active status"
means an object is
				  physically attached to the system and any forms of potential energy. The object
				  may or may not be in operation.
"Exempt status"
means an object that is not
				  required to be inspected pursuant to Iowa Code chapter 89.
"Inactive status"
means the object is no
				  longer in operation and all forms of potential energy have been disconnected in
				  a manner that creates an air gap.
"Modular boiler"
means a steam or hot water
				  heating assembly consisting of a group of individual boilers called modules
				  intended to be installed as a unit with no intervening stop valves. Modules may
				  be under one jacket or individually jacketed. The individual modules shall be
				  limited to a maximum input of 400,000 Btu/hour (117kW) (gas), 3 gph (11.4 L/h)
				  (oil), or 115kW (electric).
"Scrapped status"
means the object has been
				  permanently destroyed and is no longer physically at the
				  location.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 91 - General Requirements for All Objects › Rule 875-91.1 - Codes and Code Cases Adopted by Reference

Current through Register Vol. 47, No. 3, July 24, 2024
(1)
ASME boiler and pressure vessel codes adopted by reference.
The ASME Boiler and Pressure Vessel Code (2021) is adopted by reference.
				Regulated objects shall be designed and constructed in accordance with the ASME
				Boiler and Pressure Vessel Code (2021) except for objects that meet one of the
				following criteria:
a. An object with an ASME
				stamp and National Board Registration that establish compliance with an earlier
				version of the ASME Boiler and Pressure Vessel Code;
b. A miniature boiler installed before March
				31, 1967;
c. A power boiler or
				unfired steam pressure vessel installed before July 4, 1951; or
d. A steam heating boiler, hot water heating
				boiler, or hot water supply boiler installed before July 1, 1960.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 91 - General Requirements for All Objects › Rule 875-91.2 - Safety Appliance

Current through Register Vol. 47, No. 3, July 24, 2024
(1) No
				person shall remove, disable or tamper with a required safety appliance except
				for the purpose of repair or inspection.
(2) An object shall not be operated unless
				all required and installed safety appliances are properly functional and
				operational.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 91 - General Requirements for All Objects › Rule 875-91.3 - Pressure-reducing Valves

Current through Register Vol. 47, No. 3, July 24, 2024
Where pressure-reducing valves are used, one or more relief
				  or safety valves shall be provided on the low-pressure side of the reducing
				  valve when the piping equipment on the low-pressure side does not meet the
				  requirements for the full initial pressure. The relief or safety valves shall
				  be located adjoining or as close as possible to the reducing valve. Proper
				  protection shall be provided to prevent injury or damage caused by the escaping
				  fluid from the discharge of relief or safety valves if vented to the
				  atmosphere. The combined discharge capacity of the relief valves or safety
				  valves shall be such that the pressure rating of the lowest pressure piping or
				  equipment shall not be exceeded in case the reducing valve sticks open. If a
				  bypass around the reducing valves is used, a safety valve is required on the
				  low-pressure side and shall be of sufficient capacity to relieve all the fluid
				  that can pass through the bypass without overpressuring the low-pressure side.
				  A pressure gage shall be installed on the low-pressure side of a reducing
				  valve.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 91 - General Requirements for All Objects › Rule 875-91.4 - Blowoff Equipment

Current through Register Vol. 47, No. 3, July 24, 2024
The blowdown from an object that enters a sanitary sewer
				  system or blowdown that is considered a hazard to life or property shall pass
				  through blowoff equipment that will reduce pressure and temperature. The
				  temperature of the water leaving the blowoff equipment shall not exceed 150
				  degrees Fahrenheit. If the local jurisdiction has a temperature limit of less
				  than 150 degrees Fahrenheit, the temperature of the water leaving the blowoff
				  equipment shall comply with the limit set by the local jurisdiction. The
				  pressure of the water leaving the blowoff equipment shall not exceed 5 psig.
				  The blowoff piping and fittings between the object and the blowoff tank shall
				  comply with the construction or installation code. All materials used in the
				  fabrication of object blowoff equipment shall comply with the construction or
				  installation code. All blowoff equipment shall be equipped with openings to
				  facilitate cleaning and inspection.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 91 - General Requirements for All Objects › Rule 875-91.5 - Location of Discharge Piping Outlets

Current through Register Vol. 47, No. 3, July 24, 2024
The discharge from safety valves, safety relief valves,
				  blowoff pipes and other outlets shall comply with the following:
(1) The discharge piping shall terminate at a
				safe point of discharge.
(2) When
				the safety valve or temperature and pressure relief valve discharge is piped
				away from the object to a safe point of discharge, provision shall be made for
				properly draining the piping.
(3)
				The size of the discharge piping shall not be reduced from the size of the
				relief valve.
(4) All discharge
				piping shall be comprised of appropriate metallic material identified in ASME
				Section II.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 91 - General Requirements for All Objects › Rule 875-91.6 - Pipe, Valve, and Fitting Requirements

Current through Register Vol. 47, No. 3, July 24, 2024
Pipes, valves, and fittings subject to the effects of
				  galvanic action shall not be used on objects covered by these rules. Dielectric
				  fittings shall be used where dissimilar metals are joined.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 91 - General Requirements for All Objects › Rule 875-91.7 - Repairs and Alterations to Unfired Steam Pressure Vessels

Current through Register Vol. 47, No. 3, July 24, 2024
No single repair of an unfired steam pressure vessel shall
				  involve replacement of more than 50 percent of the OEM's pressure-retaining
				  boundary.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 91 - General Requirements for All Objects › Rule 875-91.8 - Plugging Boiler Tubes

Current through Register Vol. 47, No. 3, July 24, 2024
This rule does not apply to tubes in headers of economizers,
				  evaporators, superheaters, or reheaters.
(1)
General requirements.
a. Leaky tubes shall be replaced or
				plugged.
b. Tube plugs shall be
				made of a material which is compatible with the material of the boiler tube
				being plugged and shall be welded into place or manufactured to be expanded
				into the tube sheet or drum.
c. The
				maximum number of tubes that may be plugged shall be the lesser number
				specified by the OEM or an engineer experienced in boiler design.
d. Documentation of the maximum number of
				tubes that may be plugged shall be kept on site, and a copy shall be supplied
				to the division of labor services by either mail or email.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 91 - General Requirements for All Objects › Rule 875-91.9 - Boiler Door Latches

Current through Register Vol. 47, No. 3, July 24, 2024
A watertube boiler shall have the firing doors of the inward
				  opening type, unless such doors are provided with substantial and effective
				  latching or fastening devices or are otherwise so constructed as to prevent
				  closed doors from being blown open by pressure on the furnace side. These
				  latches or fastenings shall be of the positive, self-locking type. Friction
				  contacts, latches, and bolts actuated by springs shall not be used. The
				  foregoing requirements for latches or fastenings shall not apply to coal
				  openings on downdraft or similar furnaces.
All other doors, except explosion doors, not used in the
				  firing of the boiler may be provided with bolts or fastenings in lieu of
				  self-locking latching devices. Explosion doors, if used and located in the
				  setting walls within seven feet of the firing floor or operating platform,
				  shall be provided with substantial deflectors to divert the
				  blast.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 91 - General Requirements for All Objects › Rule 875-91.10 - Equipment Room

Current through Register Vol. 47, No. 3, July 24, 2024
This rule applies to existing and new installations except as
				  noted in subrule 91.10(1).
(1)
Clearances.
a. This paragraph
				applies to objects installed after December 1, 2022. Minimum clearance on all
				sides of objects shall be 36 inches, or the manufacturer's recommended service
				clearances if they allow sufficient room for inspection. Where a manufacturer
				identifies in the installation manual or other document that the unit requires
				more than 36 inches of service clearance, those dimensions shall be followed.
				Manholes shall have five feet of clearance between the manhole opening and any
				wall, ceiling or piping that would hinder entrance or egress from the
				object.
b. This paragraph applies
				to all objects installed after December 1, 2021, and before December 1, 2022.
				All objects shall be installed with the clearances identified in NBIC Part
				1.
c. This paragraph applies to
				objects installed after September 20, 2006, and before December 1, 2021.
				Minimum clearance on all sides of objects shall be 24 inches, or the
				manufacturer's recommended service clearances if they allow sufficient room for
				inspection. Where a manufacturer identifies in the installation manual or other
				document that the unit requires more than 24 inches of service clearance, those
				dimensions shall be followed. Manholes shall have five feet of clearance
				between the manhole opening and any wall, ceiling or piping that would hinder
				entrance or egress from the object.
d. All objects installed prior to September
				20, 2006, shall be so located that adequate space is provided for the proper
				operation, inspection, and necessary maintenance and repair of the object and
				its appurtenances.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 91 - General Requirements for All Objects › Rule 875-91.11 - Fall Protection

Current through Register Vol. 47, No. 3, July 24, 2024
The owner or user shall provide safe access to object parts
				  over four feet high consistent with 29 CFR Subpart D, Walking-Working Surfaces,
				  and
				  29 CFR
				  1910.140, Personal Fall Protection
				  Systems.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 91 - General Requirements for All Objects › Rule 875-91.13 - Air and Ventilation

Current through Register Vol. 47, No. 3, July 24, 2024
(1)
Notice concerning other rules.
The division and the Iowa
				department of public safety both enforce requirements concerning air and
				ventilation. Objects that are covered by both sets of rules must comply with
				both sets of rules.
(2)
Documentation.
Documentation of compliance with any
				requirement of this rule shall be maintained in the boiler room. However, it is
				not necessary to maintain documentation of the louvered area.
(3)
National combustion air
				standards.
a.
Installations.
Installations shall comply with the edition of NFPA 31,
				NFPA 54, NFPA 58, NFPA 85, or IMC currently adopted at rule
				875-91.1 (89) or with the Iowa
				combustion air standard in subrule 91.13(4). However, compliance with one of
				the listed NFPA codes constitutes compliance with this rule only if the object
				burns the fuel covered by the NFPA.
b.
Existing objects.
An
				adequate supply of combustion air shall be maintained for all objects while in
				operation. Compliance with the current edition of NFPA 31, NFPA 54, NFPA 58,
				NFPA 85, or IMC as adopted at rule
				875-91.1 (89) or with subrule
				91.13(4) constitutes compliance with this rule. Compliance with an earlier
				edition of NFPA 31, NFPA 54, NFPA 58, NFPA 85, or IMC constitutes compliance
				with this rule. However, compliance with one of the listed NFPA codes
				constitutes compliance with this rule only if the object burns the fuel covered
				by the NFPA. Compliance with an earlier version of Iowa's combustion air rule
				constitutes compliance with this rule. Earlier versions of Iowa's combustion
				air rule are available from the board's staff upon request.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 91 - General Requirements for All Objects › Rule 875-91.14 - Condensate Return Tank

Current through Register Vol. 47, No. 3, July 24, 2024
Condensate return tanks shall be equipped with at least two
				  vents or a vent and overflow pipe to protect against a loose float plugging a
				  single connection.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 91 - General Requirements for All Objects › Rule 875-91.17 - English Language and U.s. Customary Units Required

Current through Register Vol. 47, No. 3, July 24, 2024
All documentation supplied for the unit including but not
				  limited to the manufacturers' data report, drawings, parts lists, installation
				  manuals, and operating manuals shall be in English, and all measurements shall
				  be in U.S. customary units. All pressure gages, thermometers and other controls
				  and safety devices shall also be in U.S. customary units.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 92 - Power Boilers › Rule 875-92.1 - Scope

Current through Register Vol. 47, No. 3, July 24, 2024
This chapter applies to all power boilers, and it applies to
				  miniature power boilers installed on and after September 20, 2006. 875-Chapter
				  93 applies to miniature power boilers installed prior to September 20,
				  2006.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 92 - Power Boilers › Rule 875-92.4 - Maximum Allowable Working Pressure for Steel Boilers

Current through Register Vol. 47, No. 3, July 24, 2024
This rule applies to power boilers installed prior to July 1,
				  1983. A boiler constructed with fusion-welded seams and not radiographed and
				  stress relieved during construction shall not be operated at a pressure in
				  excess of 15 pounds per square inch. Boilers with fusion-welded seams that are
				  radiographed and stress relieved and constructed to ASME Code requirements in
				  effect when the boiler was constructed may be operated at a pressure as
				  established in subrules 92.4(1) and 92.4(2).
(1)
Calculation.
The maximum
				allowable working pressure on the shell of a boiler shall be determined by the
				strength of the weakest course computed from the thickness of the plate, the
				tensile strength of the plate, the efficiency of the longitudinal joint, the
				inside diameter of the course, and the factor of safety allowed by these rules.
				The formula for determining the maximum allowable working pressure is:
TStE/RFS= Maximum allowable working pressure, psig.
Where:
TS = Ultimate tensile strength of shell plate(s), psig. When
				  the tensile strength of a steel plate(s) is unknown, it shall be taken as
				  55,000 psig for temperatures not exceeding 650 degrees F.
t = Minimum thickness of shell plates of the weakest course,
				  in inches.
E = Efficiency of longitudinal joint calculated pursuant to
				  construction or installation code.
R = Inside radius of the weakest course of the shell or drum,
				  in inches.
FS = Factor of safety specified in subrule 92.4(2).
(2)
Factor of
				safety.
a. The lowest factor of
				safety on boilers shall be four, except for horizontal tubular boilers having
				continuous lap seams more than 12 feet in length where the factor of safety
				shall be eight.
b. Boilers that are
				reinstalled and have lap riveted construction or seams of butt and double strap
				riveted construction shall use ASME Code, Section I (1971).
c. The inspector shall increase the factor of
				safety if the conditions and safety of the boiler demand it.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 92 - Power Boilers › Rule 875-92.5 - Maximum Allowable Working Pressure and Temperature for Cast Iron Headers and Mud Drums

Current through Register Vol. 47, No. 3, July 24, 2024
This rule applies to power boilers installed prior to July 1,
				  1983.
(1)
Tube
				boiler.
The maximum allowable working pressure on a watertube boiler,
				the tubes of which are secured in cast iron or malleable iron headers or which
				have cast iron mud drums, shall not exceed 160 psig or a temperature of
				250° F.
(2)
Maximum
				steam pressure.
The maximum steam pressure on any boiler constructed
				of cast iron in which steam is generated shall be 15 psig.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 92 - Power Boilers › Rule 875-92.6 - Rivets

Current through Register Vol. 47, No. 3, July 24, 2024
This rule applies to power boilers installed prior to July 1,
				  1983. When the diameter of the rivet holes in the longitudinal joints of a
				  boiler is not known, the diameter and cross-sectional area of rivets, after
				  driving, shall be selected from ASME Code, Section I (1971).
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 92 - Power Boilers › Rule 875-92.8 - Boiler Feeding

Current through Register Vol. 47, No. 3, July 24, 2024
This rule applies to power boilers installed prior to July 1,
				  1983.
(1) Each boiler shall have a
				feed supply that will permit it to be fed at any time while under pressure. A
				boiler having more than 500 square feet of water-heating surface shall have at
				least two means of feeding, one of which shall be an approved feed pump,
				injector, or inspirator. One source of feed is directly from the water main.
				Boilers fired by gaseous, liquid, or solid fuel in suspension may be equipped
				with a single means of feeding water provided means are furnished for the
				immediate shutoflf of heat input prior to the water level reaching the lowest
				permissible level. The feedwater shall be introduced into the boiler in such a
				manner that it will not be discharged close to riveted joints of shell or
				furnace sheets, directly against surfaces exposed to products of combustion, or
				directed to surfaces subject to radiation from the fire. The feed piping to the
				boiler shall be provided with a check valve near the boiler and a stop valve
				between the check valve and the boiler.
(2) When two or more boilers are fed from a
				common source, there shall also be a valve on the branch to each boiler between
				the check valve and source of supply. Whenever a globe valve is used on feed
				piping, the inlet shall be under the disk of the valve. In all cases where
				returns are fed back to the boiler by gravity, there shall be a check valve and
				stop valve in each return line. The stop valve shall be placed between the
				boiler and the check valve, and both shall be located as close to the boiler as
				is practicable.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 92 - Power Boilers › Rule 875-92.9 - Water Level Indicators

Current through Register Vol. 47, No. 3, July 24, 2024
This rule applies to power boilers installed prior to July
				  1,1983. Outlet connections that allow the escape of an appreciable amount of
				  steam or water shall not be placed on the piping. However, this rule does not
				  prohibit the installation of damper regulators, feed water regulators,
				  low-water fuel cutouts, drains, or steam gages. The water column shall be
				  provided with a drain of at least ¾-inch piping size. The drain must
				  have a valve and be piped to a safe location. Each boiler shall have three or
				  more gage cocks located within the visible length of the water glass, except
				  when the boiler has two water glasses located at the same horizontal lines.
				  Only two gage cocks are required on boilers not over 36 inches in diameter with
				  a heating surface not exceeding 100 square feet. Gage cocks are not required on
				  electric boilers.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 92 - Power Boilers › Rule 875-92.10 - Pressure Gages

Current through Register Vol. 47, No. 3, July 24, 2024
This rule applies to power boilers installed prior to July 1,
				  1983. Each boiler shall have a pressure gage so located that the gage is
				  readable. The pressure gage shall be installed so that it shall at all times
				  indicate the pressure in the boiler Each steam boiler shall have the pressure
				  gage connected to the steam space or to the water column or its steam
				  connection. A valve or cock shall be placed in the gage connection adjacent to
				  the gage. An additional valve or cock may be located near the boiler providing
				  it is locked or sealed in the open position. No other shutoff valves shall be
				  located between the gage and the boiler The pipe connection shall be of ample
				  size and arranged so that it may be cleared by blowing out. For a steam boiler
				  the gage or connection shall contain a siphon or equivalent device that will
				  develop and maintain a water seal that will prevent steam from entering the
				  gage tube. Pressure gage connections shall be suitable for the maximum
				  allowable working pressure and temperature, but if the temperature exceeds
				  406° F, brass or copper pipe or tubing shall not be used. The connections
				  to the boiler, except the siphon, if used, shall not be less than ¼-inch
				  standard pipe size, but where steel or wrought-iron pipe or tubing is used,
				  they shall not be less than ½-inch inside diameter The minimum size of a
				  siphon, if used, shall be ¼-inch inside diameter. The dial of the
				  pressure gage shall be graduated to approximately double the pressure at which
				  the safety valve is set, but in no case to less than 1½ times this
				  pressure.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 92 - Power Boilers › Rule 875-92.11 - Steam Stop Valves

Current through Register Vol. 47, No. 3, July 24, 2024
This rule applies to power boilers installed prior to July 1,
				  1983. Each steam outlet from a boiler, except safety valve and water-column
				  connections, shall be fitted with a stop valve located as close as practicable
				  to the boiler When a stop valve is so located that water can accumulate, ample
				  drains shall be provided. The drainage shall be piped to a safe location and
				  shall not be discharged on the top of the boiler or its setting. When boilers
				  provided with manholes are connected to a common steam main, the steam
				  connection from each boiler shall be fitted with two stop valves having an
				  ample free-blowing drain between them. The discharge of the drain shall be
				  piped clear of the boiler setting. The stop valves shall consist of one
				  automatic nonreturn valve next to the boiler and a second valve of the outside
				  screw and yoke type.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 92 - Power Boilers › Rule 875-92.12 - Blowoff Connection

Current through Register Vol. 47, No. 3, July 24, 2024
This rule applies to power boilers installed prior to July 1,
				  1983. Each boiler shall have a blowoff pipe fitted with valve or cock, in
				  direct connection with the lowest water space practicable.
When the maximum allowable working pressure exceeds 125 psig,
				  the blowoff pipe shall be at least schedule 80 from the boiler to the valve or
				  valves and shall run frill size without reducers or bushings. Galvanized
				  materials shall not be used.
All fittings between the boiler and valve shall be steel or
				  at least schedule 80 fittings of bronze, brass, malleable iron, or cast iron,
				  all of which shall be suitable for the pressure and temperature. In case of
				  replacement of pipe or fittings in the blowoff lines, as specified in this
				  paragraph, they shall be installed in accordance with the rules of new
				  installations.
When the maximum allowable working pressure exceeds 125 psig,
				  each bottom blowoff pipe shall be fitted with at least a 250-pound standard
				  valve or cock. Two valves, or a valve and a cock, should be used on each
				  blowoff.
When exposed to direct furnace heat, a bottom blowoff pipe
				  shall be protected by firebrick or other heat resisting material so arranged
				  that the pipe may be inspected.
An opening in the boiler setting for a blowoff pipe shall be
				  arranged to provide for free expansion and contraction.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 93 - Miniature Power Boilers Installed Prior to September 20, 2006 › Rule 875-93.1 - Scope

Current through Register Vol. 47, No. 3, July 24, 2024
875-93.1(89) Scope. This chapter sets forth requirements in
				  addition to those contained in 875-Chapter 92 for boilers that:
1. Have a heating surface of 20 square feet
				or less;
2. Have a gross volume of
				5 cubic feet or less, excluding casing and insulation;
3. Have an inside shell diameter of 16 inches
				or less;
4. Have 100 psig maximum
				allowable working pressure; and
5.
				Were installed prior to September 20, 2006.
For objects covered by this chapter, if there is a conflict
				  between this chapter and Chapter 92, this chapter shall govern the
				  issue.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 93 - Miniature Power Boilers Installed Prior to September 20, 2006 › Rule 875-93.2 - Code Adopted by Reference

Current through Register Vol. 47, No. 3, July 24, 2024
The current edition of the National Board Inspection Code
				  adopted by reference in rule
				  875-91.1
				  (89) shall apply to objects covered by this chapter.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 93 - Miniature Power Boilers Installed Prior to September 20, 2006 › Rule 875-93.3 - Maximum Working Pressure

Current through Register Vol. 47, No. 3, July 24, 2024
The maximum allowed working pressure is to be determined by
				  rule
				  875-92.4
				  (89).
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 93 - Miniature Power Boilers Installed Prior to September 20, 2006 › Rule 875-93.4 - Safety Valves

Current through Register Vol. 47, No. 3, July 24, 2024
Boilers covered by this chapter shall be equipped with a
				  sealed spring-loaded pop safety valve of not less than ½-inch pipe size.
				  The minimum relieving capacity of the safety valve shall be determined in
				  accordance with rule
				  875-92.7 (89). In
				  addition to these requirements, the safety valve shall have sufficient capacity
				  to discharge all the steam that can be generated by the boiler without allowing
				  the pressure to rise more than 6 percent above maximum allowable working
				  pressure.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 93 - Miniature Power Boilers Installed Prior to September 20, 2006 › Rule 875-93.5 - Steam Stop Valves

Current through Register Vol. 47, No. 3, July 24, 2024
Each steam line from a miniature power boiler shall be
				  provided with a stop valve located as close to the boiler shell or drum as is
				  practicable except when the boiler and steam receiver are operated as a closed
				  system.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 93 - Miniature Power Boilers Installed Prior to September 20, 2006 › Rule 875-93.6 - Water Gages

Current through Register Vol. 47, No. 3, July 24, 2024
(1) Miniature
				power boilers for operation with a definite water level shall be equipped with
				a glass water gage for determining the water level. The lowest permissible
				water level for vertical boilers shall be at a point one-third of the height of
				the shell above the bottom head or tube sheet. When the boiler is equipped with
				an internal furnace, the water level shall not be less than one-third of the
				length of the tubes above the top of the furnace tube sheet. In the case of
				small boilers operated in a closed system where there is insufficient space for
				the usual glass water gage, water level indicators of the glass bull's eye type
				may be used.
(2) Miniature power
				boilers shall have the lowest visible part of the water gage glass located at
				least 1 inch above the lowest permissible water level specified by the
				manufacturer.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 93 - Miniature Power Boilers Installed Prior to September 20, 2006 › Rule 875-93.7 - Feedwater Supply

Current through Register Vol. 47, No. 3, July 24, 2024
(1) Except for
				miniature power boilers operating without the extraction of steam, miniature
				power boilers shall be provided with at least one feed pump or other feeding
				device unless the boiler feed line is connected to a water main carrying
				sufficient pressure to feed the boiler In the latter case, in lieu of a feeding
				device, a suitable connection or opening shall be provided to fill the boiler
				when cold. Such connection shall be no less than ½-inch pipe size for
				iron or steel pipe and ¼ inch for brass or copper pipe.
(2) The feed pipe shall be provided with a
				check valve and a stop valve of a size not less than that of the pipe. The feed
				water may be delivered through the blowoff opening if desired.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 93 - Miniature Power Boilers Installed Prior to September 20, 2006 › Rule 875-93.8 - Blowoff

Current through Register Vol. 47, No. 3, July 24, 2024
Miniature power boilers shall be equipped with a blowoff
				  connection, not less than ½-inch pipe size, located to drain from the
				  lowest water space practicable. The blowoff shall be equipped with a valve or
				  cock not less than ½-inch pipe size.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 93 - Miniature Power Boilers Installed Prior to September 20, 2006 › Rule 875-93.9 - Washout Openings

Current through Register Vol. 47, No. 3, July 24, 2024
Miniature power boilers exceeding 12 inches internal diameter
				  or having more than ten square feet of heating surface shall be fitted with not
				  less than three brass washout plugs of 1-inch pipe size that shall be screwed
				  into openings in the shell near the bottom. In miniature power boilers of the
				  closed type system heated by removable internal electric heating elements, the
				  openings for these elements when suitable for cleaning purposes may be
				  substituted for washout openings. Boilers not exceeding 12 inches internal
				  diameter and having less than ten square feet of heating surface need not have
				  more than two 1-inch openings for cleanouts, one of which may be used for the
				  attachment of the blowoff valve; these openings shall be opposite each other
				  where possible. All threaded openings shall be opposite each other where
				  possible. All threaded openings in the boiler shall be provided with a riveted
				  or welded reinforcement to give four full threads therein.
Electric boilers of a design employing a removable top cover
				  flange for inspection and cleaning need not be fitted with washout
				  openings.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 93 - Miniature Power Boilers Installed Prior to September 20, 2006 › Rule 875-93.10 - Fixtures and Fittings

Current through Register Vol. 47, No. 3, July 24, 2024
All valves, pipe fittings, and appliances connected to a
				  miniature power boiler shall be equal to at least the minimal requirements of
				  the construction or installation code and shall be rated for not less than the
				  maximum allowable working pressure of the miniature power boiler In no case
				  shall the rating be for less than 125 pounds.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 94 - Steam Heating Boilers, Hot Water Heating Boilers and Hot Water Supply Boilers › Rule 875-94.1 - Scope

Current through Register Vol. 47, No. 3, July 24, 2024
This chapter shall apply to:
(1) Steam boilers for operation at pressures
				not exceeding 15 psig;
(2) Hot
				water heating boilers for operation at pressures not exceeding 160 psig or
				temperatures not exceeding 250° F at or near the boiler outlet;
(3) Hot water supply boilers.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 94 - Steam Heating Boilers, Hot Water Heating Boilers and Hot Water Supply Boilers › Rule 875-94.2 - Codes Adopted by Reference

Current through Register Vol. 47, No. 3, July 24, 2024
The codes listed in 875-Chapter 91 apply to objects covered
				  by this chapter.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 94 - Steam Heating Boilers, Hot Water Heating Boilers and Hot Water Supply Boilers › Rule 875-94.3 - General Requirements

Current through Register Vol. 47, No. 3, July 24, 2024
This rule applies to all objects covered by this chapter and
				  installed prior to September 20, 2006.
(1)
Instruments, fittings and
				controls mounted inside boiler jackets.
Any or all instruments,
				fittings and controls required by this chapter may be installed inside of
				boiler jackets provided the water gage and pressure gage on a steam boiler or
				the thermometer and pressure gage on a water boiler are visible through an
				opening or openings at all times.
(2)
Electrical code
				compliance.
a.
Wiring.
All wiring for controls, heat-generating apparatus and
				other appurtenances necessary for the operation of the boiler or boilers shall
				be in accordance with the National Electric Code (1992). All boilers supplied
				with factory-mounted and factory-wired controls, heat-generating apparatus and
				other appurtenances necessary for the operation of the boilers shall be
				installed in accordance with the provisions of nationally recognized
				standards.
b.
Circuitry.
The control circuitry shall be grounded and shall
				operate at 150 volts or less. One of the two following systems may be employed
				to provide the control circuit:
(1) Two-wire,
				nominal 120-volt system with separate equipment ground conductor as follows:
				This system shall consist of the line, neutral and equipment ground conductors.
				The control panel frame and associated control circuitry metallic enclosures
				shall be electrically continuous and be bonded to the equipment ground
				conductor.
The equipment ground conductor and the neutral conductor
				  shall be bonded together at their origin in the electrical system for objects
				  installed prior to September 20, 2006.
The line side of the control circuit shall be provided with a
				  time delay fuse sized as small as practicable.
(2) Two-wire, nominal 120-volt system
				obtained by using an isolation transformer as follows: The two-wire control
				circuit shall be obtained from the secondary side of an isolation transformer,
				shall be electrically continuous and shall be bonded to a convenient cold water
				pipe. All metallic enclosures of control components shall be securely bonded to
				this ground control circuit wire. The primary side of the isolation transformer
				will normally be a two-wire source with a potential 230, 208 or 440 volts.
Both sides of the two-wire primary circuit shall be fused.
				  The hot leg on the load side of the isolation transformer shall be fused as
				  small as practicable, and shall not be fused above the rating of the isolation
				  transformer.
Iowa Administrative Code › Agency 875 - Labor Services Division › Boilers and Pressure Vessels › Chapter 94 - Steam Heating Boilers, Hot Water Heating Boilers and Hot Water Supply Boilers › Rule 875-94.4 - Steam Heating Boilers Installed Before July 1, 1960

Current through Register Vol. 47, No. 3, July 24, 2024
All steam heating boilers installed before July 1, 1960,
				  shall be constructed and installed in accordance with this rule.
(1)
Safety valves.
a. Each steam boiler shall have one or more
				safety valves bearing the National Board "HV" stamp of the spring-pop type
				adjusted and sealed to discharge at a pressure not to exceed 15 psig. Seals
				shall be attached in a manner to prevent the valve from being taken apart
				without breaking the seal. The safety valves shall be arranged so that they
				cannot be set to relieve at a higher pressure than the maximum allowable
				working pressure of the boiler. For iron and steel bodied valves exceeding
				2-inch pipe size, the drain hole or holes shall be tapped not less than
				3/8-inch pipe size.
b. The safety
				valves shall be located in the top or side of the boiler They shall be
				connected directly to a tapped or flanged opening in the boiler, to a fitting
				connected to the boiler by a short nipple, to a Y-base, or to a valveless
				header connecting steam or water outlets on the same boiler. Coil or header
				type boilers shall have the safety valve located on the steam outlet end.
				Safety valves shall be installed with their spindles vertical. The opening or
				connection between the boiler and any safety valve shall have at least the area
				of the valve inlet.
c. Safety
				valves ½-inch or more in diameter that are installed on a steam boiler
				shall have a hand-lifted device that will positively lift the disk from its
				seat at least 1/16 inch when there is no pressure in the boiler The seats and
				disks shall be of noncorrosive material.
d. Safety valves for a steam boiler shall be
				at least ½ inch unless the boiler and radiating surfaces consist of a
				self-contained unit. Safety valves shall not be larger than 4½ inches.
				The inlet opening shall have an inside diameter equal to or greater than the
				seat diameter.
e. The minimum
				relieving capacity of the valve or valves shall be governed by the capacity
				marking on the boiler.
f. The
				minimum valve capacity in pounds per hour shall be equal to the steam
				generation as specified in 875-subrules 92.7(9) and 92.7(10).
g. The safety valve capacity for each steam
				boiler shall be such that with the fuel burning equipment operated at maximum
				capacity the pressure will not rise more than 5 percent above the maximum
				allowable working pressure.
h. When
				operating conditions are changed or additional boiler heating surface is
				installed, the valve capacity shall meet the new conditions.