California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 15 - Petroleum Safety Orders-Refining, Transportation and Handling › Article 2 - Definitions › Section 6755 - Definitions

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) The following
					 definitions shall apply in the application of these orders.
Alteration (Pressure Vessels). An alteration is any
						change in the item described on the original Manufacturer's Data Report which
						affects the pressure containing capability of the pressure vessel. Nonphysical
						changes (re-rating) such as an increase in the maximum allowable working
						pressure (internal or external) or design temperature, or the addition of
						loadings not considered in the original design, shall be considered an
						alteration. A reduction in the (minimum) design metal temperature such that
						additional mechanical tests are required shall also be considered an
						alteration.
Approved. See Section
						6751.
A.N.S.I. American National Standards Institute.
A.P.I. American Petroleum Institute.
A. S. M. E. American Society of Mechanical
						Engineers.
A. S. T. M. American Society for Testing and
						Materials.
Atmospheric Tank. A storage tank which has been designed
						to operate at pressures from atmospheric through 0.5 psig (3.5 KPa).
Authorized Employee. (in reference to an employee's
						assignment). Selected by the employer for that purpose.
Auto Ignition Temperature. See Ignition
						Temperature.
Barrel. A liquid measure of 42 U.S. gallons (158.9
						liters).
Blind. A device, other than a valve, used to isolate
						equipment for the purpose of preventing the passage of liquid, gas or
						vapor.
Boiling Point. The temperature at which a liquid boils at
						a pressure of 14.7 psia (760 mm Hg).
Chain or wire rope access equipment (Jacob's ladder).
						Specialized equipment approved for use to access constricted locations and
						having rigid rungs suspended between two vertical chain or wire rope stringers
						instead of the rigid rails used on fixed or portable ladders.
Code. Consensus Standards as referenced in the Petroleum
						Safety Orders.
Combustible Liquid. See Liquid.
Competent Person. One who is capable of identifying
						existing and predictable hazards in the surroundings or working conditions
						which are unsanitary, hazardous, or dangerous to employees, and who has
						authorization to take prompt corrective measures to eliminate them.
Confined Space. See Article 108, General Industry Safety
						Orders.
Consumer. One who uses up or consumes petroleum, natural
						gas or their products either in serving his own wants or in the production of
						another article of value when such use or consumption does not involve
						processing as defined in these orders.
Corrosive. A substance that causes visible destruction
						of, or irreversible alterations in living tissue by chemical action at the site
						of contact. For example, a substance is considered to be corrosive if, when
						tested on the intact skin of albino rabbits by the method described by the U.S.
						Department of Transportation in Appendix A to 49 CFR Part 173 , it destroys or
						changes irreversibly the structure of the tissue. This term shall not refer to
						action on inanimate surfaces.
Crude Oil. Hydrocarbon mixtures that have a flash point
						below 150° F and which have not been refined.
Division. Division of Occupational Safety and
						Health.
Existing Installations. All equipment installed in
						California prior to the adoption of these orders and in compliance with
						applicable safety orders of the Division in effect at the time of installation
						and that have not changed ownership and location since the adoption of these
						orders.
Fire Watch. A qualified person designated by the employer
						to perform the duties as required by General Industry Safety Orders, Section
						4848.
Fired Equipment. Equipment heated by an externally
						applied flame.
Flammable Gas. A gas that will burn in air.
Flammable Liquid. See Liquid.
Flare. A device in which excess gases and vapors are
						burned in the atmosphere.
Flash Point (of a liquid). The minimum temperature at
						which it gives off vapor in sufficient concentration to form an ignitible
						mixture with air near the surface of the liquid within the vessel as specified
						by appropriate test procedure and apparatus as follows:
(1) The flash point of a liquid having a
					 viscosity less than 45 SUS at 100° F (37.8° C) and a flash point below
					 200° F. (93.4° C), (refer to General Industry Safety Orders, Section
					 5194.)
(2) The flash point of a liquid having a
					 viscosity of 45 SUS or more at 100° F. (37.8° C) or a flash point of
					 200° F. (93.4° C) or higher, (refer to General Industry Safety Orders,
					 Section 5194.)
(3) For a liquid that is a mixture of
					 compounds that have different volatilities and flash points, its flash point
					 shall be determined by using the procedure specified above on the liquid in the
					 form it is shipped. If the flash point, as determined by this test, is 100°
					 F. (37.8° C) or higher, an additional flash point determination shall be
					 run on a sample of the liquid evaporated to 90 percent of its original volume,
					 and the lower value of the two tests shall be considered the flash point of the
					 material.
(4) Organic peroxides,
					 which undergo auto accelerating thermal decomposition, are excluded from any of
					 the flash point determination methods above.
Fumes. Solid particles generated by condensation from the
						gaseous state, generally after volatilization from molten metals, etc., and
						often accompanied by a chemical reaction such as oxidation.
Gas. A fluid, such as air, that has neither independent
						shape nor volume, but tends to expand indefinitely.
Gas Free or Free of Gas. Free from harmful or hazardous
						concentrations of vapors, fumes and gases.
Hazardous Substance. One which by reason of being
						explosive, flammable, toxic, poisonous, corrosive, oxidizing, irritant, or
						otherwise harmful is likely to cause injury.
High Vapor Pressure Hydrocarbon. Any liquid hydrocarbon
						component of petroleum or natural gas, or a mixture of two or more liquid
						petroleum or natural gas components, having a vapor pressure greater than 23
						P.S.I.A. at 100° F., as determined by means of recognized test
						methods.
Hot Work. Electric or gas welding, cutting or brazing or
						any extreme heat, flame or spark producing procedures or operations.
Ignition Temperature. The minimum temperature to which a
						flammable vapor or gas mixture in air must be heated in order to initiate or
						cause self-sustained combustion.
Isolation. A procedure whereby equipment is removed from
						service and completely protected against the inadvertent release or
						introduction of material or energy.
Laboratory. A plant or a generally recognized department
						or subdivision of a plant where the primary purpose is testing, analysis,
						inspection, research, experimentation or process development in connection with
						petroleum, natural gas or their products, derivatives or related commodities.
						This shall not include places where simple routine tests, not requiring the use
						of a source of ignition, are done incidental to the processing or handling of
						petroleum, natural gas, or their products as, for example, by gaugers, process
						equipment operators, and others not generally considered to be laboratory
						personnel.
Liquid. See General Industry Safety Orders, Section
						5415.
(A) Combustible liquids shall be subdivided
					 as follows:
Class II liquids shall include those having flash points
						at or above 100° F (37.8° C) and below 140° F (60° C).
Class IIIA liquids shall include those having flash
						points at or above 140° F (60° C) and below 200° F (93.4°
						C).
Class IIIB liquids shall include those having flash
						points at or above 200° F (93.4° C.)
(B) Flammable Liquid. A liquid having a flash
					 point below 100° F (37.8° C) and having a vapor pressure not exceeding
					 40 lb. per sq. in. (absolute) (176 kPa) at 100° F (37.8° C) and shall
					 be known as Class I liquid
Class I liquids shall be subdivided as follows:
Class IA shall include those having flash points below
						73° F (22.8° C) and having a boiling point below 100° F (37.8°
						C).
Class IB shall include those having flash points below
						73° F (22.8° C) and having a boiling point at or above 100° F
						(37.8° C).
Class IC shall include those having flash points at or
						above 73° F (22.8° C) and below 100° F (37.8° C).
Natural Gas. Mixture of hydrocarbon gases and vapors
						consisting principally of methane.
Opening of Pipelines or Equipment. Exposing the contents
						of pipelines or equipment to the atmosphere, through means other than
						valves.
Owner-User. (Pressure Vessel) An owner or user of
						pressure vessels who maintains a regularly established inspection department
						whose organization and inspection procedures have been accepted by the
						Division.
Pilot Plant. See Laboratory.
Plant. See Refinery.
Portable Tank. A tank not intended for a fixed
						installation.
Pressure Relief Device. A device such as a spring-loaded
						safety valve or rupture disk for relieving excess pressure.
Pressure Vessel. A container, including cylinders, used
						for the storage or accumulation of any gas or liquid under pressure. This
						definition is not intended to include boilers as defined in the Boiler and
						Fired Pressure Vessel Safety Orders, or pressure chambers that are integral
						parts of such devices as pumps, motors, engines, clothes presses, flatwork
						ironers, tire molds, etc., where the pressure-containing part is subjected to
						severe mechanical stresses.
Qualified Inspector. An inspector as defined in Title 8,
						Unfired Pressure Vessel Safety Orders, and who holds a valid certificate of
						competency issued by the Division.
Refinery. A plant for the separation, refining, or
						processing of petroleum, natural gas, and products thereof. The entire
						operating facilities within clearly defined boundaries used for the operations
						to which these orders apply. A refinery may include numerous processing units
						or groups of activities.
Repair (Pressure Vessels). A repair is any work necessary
						to restore a pressure vessel to a safe and satisfactory operating condition,
						provided there is no deviation from the original design. Examples of repair
						include:
(1) Weld repair or replacement
					 of pressure retaining parts or attachments that have failed in a weld or in the
					 base material;
(2) Addition of
					 welded attachments to pressure parts;
(3) Replacement of pressure retaining parts
					 identical or equivalent to those existing on the pressure vessel and described
					 on the original ASME Manufacturer's Data Report;
(4) Replacement or addition of a nozzle where
					 reinforcement is not required to be considered by the code under which the
					 vessel was constructed;
(5) The
					 addition of a nozzle where reinforcement is a consideration provided the nozzle
					 is identical or equivalent to the one in the original design and located in a
					 similar part of the vessel;
(6)
					 Repairs of base material by weld overlay;
(7) Repair or replacement of a pressure part
					 with an ASME code accepted material that has a nominal chemical composition and
					 strength equivalent to the original material, and is suitable for the intended
					 service.
Reservoir. A roofed excavation for the storage of
						petroleum liquids.
Respiratory Protective Equipment. A breathing device
						designed to protect the wearer from oxygen-deficient or hazardous atmospheres
						(General Industry Safety Orders, Section
						5144).
Source of Ignition. Any flame, arc, spark, or heat which
						is capable of igniting flammable liquids, gases or vapors.
Static Electricity. The type of electrical charge
						resulting from the separation of materials, friction, or similar causes.
Sump. An unroofed, lined or unlined, pit or excavation
						for holding liquids.
Tank. A fixed receptacle (covered or uncovered) of
						greater than 60 gallons capacity other than a pressure vessel or reservoir used
						for holding or storage of liquids.
Toxic Material. A material listed in Sections
						5155,
						5208, and
						5209 of the General Industry Safety
						Orders which has the capacity to produce personal injury or illness to persons
						through ingestion, inhalation, or absorption through any body surface.
Tubular Gage Glass. An unsupported level indicator
						comprised of a glass tube or cylinder.
Vapor. The gaseous form of a substance normally liquid or
						solid.
Valve. A device for regulating or controlling the flow of
						material by a movable part or parts which open or close a passage.
Wall-Diversion. A wall made of concrete, earthwork, or
						other noncombustible material, built for the purpose of protecting employees,
						by diverting the flow of hazardous substances that may be released by tank
						failure, tank overflow, or other causes.
Wall-Retaining (Dike). A wall made of concrete,
						earthwork, or other noncombustible material, built for the purpose of
						protecting equipment and employees by confining hazardous substances that may
						be released by tank failure, tank overflow, or other causes.