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California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 1 - Unfired Pressure Vessel Safety Orders › Article 7 - Compressed and Liquefied Natural Gas System › Section 530 - Approval of Devices

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a)
					 All devices which are used in natural gas installations shall be of a type and
					 construction suitable for their intended use. The Division may approve or
					 accept devices or package units upon satisfactory evidence that they are
					 designed and constructed for safe operation in natural gas service.
(b) Except for control and indicating devices
					 that are also designed for natural gas and which have an orifice not larger
					 than No. 54 drill size, natural gas shall not be used to operate any device or
					 equipment designed to be operated with compressed air which exhausts to the
					 atmosphere. Natural gas vapor shall not be released into the air except as
					 permitted by these Orders.
(c) All
					 natural gas devices not otherwise specifically provided for shall be
					 constructed and installed to provide safety equivalent to that required for
					 other parts of the system.
(d) All
					 electrical wiring and electrical equipment used with natural gas storage or
					 dispensing apparatus shall be in accordance with the Electrical Regulations
					 administered by the Division.
For the purpose of this Order 530 (d), the electrical
						equipment installed in out-of-doors installations for stationary storage or the
						transfer of natural gas shall be suitable for use in a Class 1, Division 1,
						Group D hazardous location when installed within 10 feet in any direction of
						any connection used for the transfer of natural gas.
In order to comply with the "source of ignition"
						provisions of Order 531 (a) electrical switches, lamps, etc., located outside
						the above 10-foot area, but within the area specified in Order 531 (a) shall be
						suitable for use in a Class 1, Division 2, Group D, hazardous location. All
						electrical motors within this area shall be suitable for use in out-of-doors
						locations and shall be either:
(1) Of
					 the explosion-proof type.
(2) Of a
					 type having no contactors, commutators or sparking parts.
(3) Of a totally enclosed
					 type.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 1 - Unfired Pressure Vessel Safety Orders › Article 7 - Compressed and Liquefied Natural Gas System › Section 531 - Location of Storage Tanks and Regulating Equipment

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) General.
(1) Except as provided elsewhere in these
					 Orders, tanks, cylinders and regulating equipment used with natural gas storage
					 and/or dispensing installations shall be located outside of buildings. Each
					 individual tank or cylinder used for storage or dispensing natural gas shall be
					 located with respect to the nearest important building, or line of adjoining
					 property which may be built upon, or source of ignition, in accordance with the
					 following table:
Capacity Per Storage Tank or Bank of
								Cylinders U. S. Gallons
Minimum Distance In
								Feet
Distance Between Above Ground Storage Tanks,
								Feet
To 500
10
3
501 To 2,000
25
3
2,001 To 30,000
50
5
30,001 To 70,000
75
¼ of
								Sum of Diameter of Adjacent Tanks with
70,001 To 90,000
100
a Minimum of 5
								Feet
NOTE: At the discretion of the Division, tanks may be
						located a lesser distance from important buildings constructed of concrete or
						masonry materials.
(2) No
					 stationary storage vessel shall be located less than 10 feet from the nearest
					 street line or sidewalk, nor less than 50 feet from the nearest rail of any
					 railroad main track.
The distance between underground tanks shall be not less
						than 12 inches.
(3) Except
					 as permitted in Section
					 543, filling connections shall not
					 be located less than 10 feet from any opening into or under a building closed
					 on more than 3 sides for filling connections ½ -inch pipe size or less
					 and 15 feet for larger sized filling connections.
(4) Readily ignitible material shall not be
					 permitted within 10 feet of any stationary vessel or vaporizer.
(5) Regulators which are vented to atmosphere
					 shall be installed in such a manner that moisture cannot enter the vent and
					 accumulate above the diaphragm. Where the regulator vent may be obstructed due
					 to rain, snow or icing conditions, shields, hoods or other suitable devices
					 shall be provided to guard against closing the vent
					 opening.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 1 - Unfired Pressure Vessel Safety Orders › Article 7 - Compressed and Liquefied Natural Gas System › Section 534 - Skid Tanks

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a)
					 Skid tanks shall be securely fastened to skids extending the full length of the
					 tank, including fittings and guards at the end of the tank. The bottom of the
					 skids shall be not less than 2 inches nor more than 12 inches below the outside
					 bottom of the tank shell. The skids or lugs for attachment of the skids shall
					 be secured to tanks in accordance with the Code or rules under which the tank
					 is designed and built, and shall be designed to withstand the loaded weight of
					 the tank in any direction with a factor of safety of at least 8.
(b) Fittings on skid tanks shall be installed
					 in a recessed well or otherwise protected by means of adequate guards properly
					 installed.
(c) Unless installed in
					 compliance with Order 532, skid tanks shall not be used at any location for
					 more than 180 days without written permission from the Division.
(d) When skid tanks are transported from one
					 location to another, they shall be adequately secured to the transporting
					 vehicle.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 1 - Unfired Pressure Vessel Safety Orders › Article 7 - Compressed and Liquefied Natural Gas System › Section 535 - Installation of Tanks on Transportation and Bulk Delivery Vehicles

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
Transportation tanks shall comply with the regulations
						for such vehicles adopted by the Department of Highway
						Patrol.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 1 - Unfired Pressure Vessel Safety Orders › Article 7 - Compressed and Liquefied Natural Gas System › Section 537 - Piping Systems Valving and Labeling

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) General.
(1) All piping and tubing shall be tested
					 after assembly and proved free from leaks at a pressure equal to the maximum
					 working pressure of that portion of the system or its safety valve setting,
					 whichever is greater, except for welded piping [see 536 (a) (3)].
(2) Where excess-flow valves are used, the
					 closing flow shall be less than the flow rating of the piping system between
					 the excess-flow valve and the equipment downstream of the excess-flow
					 valve.
(3) When two or more
					 vessels, other than motor fuel tanks or cylinders, are manifolded together or
					 when branches or restrictions are incorporated into the piping system,
					 additional excess-flow valves or equivalent shall be installed where the flow
					 rating of the piping is less than the closing flow rating of the excess-flow
					 valves in the vessels. The additional excess-flow valves or equivalent shall be
					 located as close to the point of branching or restriction as possible.
NOTE: A quick-closing manually operated valve may be
						considered equivalent to an excess-flow valve at the point of pipe size
						reduction or other restriction providing:
(1) It is equipped with a means for closing
					 the valve manually from a point remote from the delivery connection.
(2) The loading and/or unloading line in
					 which it is located is secured to a bulkhead complying with Section
					 532 (a)
					 (6).
(3) The quick-closing valve is in the
					 pipeline on the tank side of the bulkhead.
(4) Bleed connections shall be provided in
					 transfer systems to permit depressurizing the line before disconnecting. These
					 bleed connections shall discharge at a safe place.
(5) Piping, compressors, pumps, valves,
					 regulators, gaging and other vessel accessory equipment shall be protected
					 against physical damage, including vehicular.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 1 - Unfired Pressure Vessel Safety Orders › Article 7 - Compressed and Liquefied Natural Gas System › Section 538 - Hose, Metallic Hose, Flexible Metal Hose and Tubing Specifications

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) Hose and
					 metallic hose shall be of or lined with materials that are resistant to
					 corrosion and to the actions of natural gas.
(b) Hose, metallic hose, flexible metal hose
					 and tubing shall be suitable for the most severe pressure and temperature
					 service conditions expected with a burst pressure of at least 4 times the
					 maximum working pressure. Flexible metal hose or pipe with swivel joints shall
					 be used for transfer operations where operating temperatures during transfer
					 will be less than minus 20 degrees Fahrenheit.
(c) Connections for hose, metallic hose,
					 flexible metal hose and tubing shall be designed with a burst pressure of at
					 least 4 times the most severe pressure and temperature conditions
					 expected.
(d) The components of the
					 hose and metallic hose shall be tested after assembly and prior to use to at
					 least 2 times the service pressure, and also tested to a pneumatic pressure of
					 at least 600 psi under water. After the original installation, all hoses shall
					 be examined visually at such intervals as are necessary to assure that they are
					 safe for use. In no case shall such examination interval exceed one year. Hose
					 shall be tested for leaks with soap suds or equivalent at least annually and
					 any leakage shall be reason for rejection. This test shall be recorded and the
					 record shall be available to the qualified inspector.
(e) All hose, metallic hose, flexible metal
					 hose and tubing and their connections shall be maintained in a safe
					 condition.
(f) While in transit,
					 all hose and flexible metal hose and tubing to be used in the transfer
					 operation, including their connections, shall be protected from wear or injury
					 and shall be capped.
(g) Hose,
					 metallic hose, flexible metal hose and tubing shall be distinctly marked either
					 by the manufacturer's permanently attached tag or by distinct markings every 5
					 feet indicating the manufacturer's name or trademark, service and working
					 pressure.
1.
						Repealer and new subsection (g) filed 8-6-76; effective thirtieth day
						thereafter (Register 76, No. 32).
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 1 - Unfired Pressure Vessel Safety Orders › Article 7 - Compressed and Liquefied Natural Gas System › Section 539 - Pressure Gages

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
Every bulk storage tank, dispensing tank, transportation
						tank and bulk delivery tank shall be provided with a suitable pressure gage.
						The pressure gage shall be installed in a special gage outlet installed
						permanently on the tank or tank system and having an opening not to exceed No.
						54 drill size opening at the tank connection. Pressure gages for LNG vessels
						shall have their connection above the maximum permissible liquid level. The
						pressure gage shall have a dial graduated to read approximately double the
						operating pressure, but in no case less than 1.2 times the pressure at which
						the pressure relief valve is set to function.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 1 - Unfired Pressure Vessel Safety Orders › Article 7 - Compressed and Liquefied Natural Gas System › Section 540 - LNG Vaporizer Installation

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) Vaporizers in excess of 1-gallon capacity
					 shall be provided with suitable automatic means to prevent liquid from passing
					 into the vapor system. This is not applicable to vaporizers discharging back to
					 the vessel only.
(b) Vaporizers in
					 excess of 1-gallon capacity shall be provided with one or more safety relief
					 valves suitable for use with natural gas and set to open at not less than the
					 maximum working pressure and not more than 110 percent of the maximum working
					 pressure of the vaporizer.
(c) The
					 minimum relieving capacity of the safety relief valves shall be at least equal
					 to the capacity marking on the vaporizer nameplate as required in Section
					 525 (c)(5). This
					 marking shall be determined for exposure to external fire and shall be
					 sufficient to prevent pressure in the vaporizer from exceeding 120 percent of
					 the maximum working pressure. When determined by calculation, the applicable
					 formula in Appendix A shall be used.
The safety relief valve discharge shall be led outside of
						the vaporizer building, if any, and be discharged at a safe
						place.
(d) No coil or other
					 device carrying artificial heat for vaporization shall be located inside of any
					 LNG vessel not constructed for vaporizing only.
(e) Vaporizers shall not be installed inside
					 of buildings unless the building is specifically designed for housing LNG
					 vaporizers; in which case the building shall be constructed of non-combustible
					 material and be adequately ventilated at both the floor line and ceiling.
					 Ventilation shall be designed to prevent gasses lighter than air from being
					 trapped at ceiling level.
NOTE: Ventilation is considered adequate when no mixture
						of flammable gases is permitted in concentrations exceeding 
						1/5 of the
						lower flammability limit for such mixture.
(f) Surge tanks, containing vapor only at 20
					 psi or less, shall be located at least 10 feet from important buildings and
					 property lines. Such tanks operating at pressures exceeding 20 psi shall be
					 located with respect to important buildings and property lines in accordance
					 with Order 531 (a).
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 1 - Unfired Pressure Vessel Safety Orders › Article 7 - Compressed and Liquefied Natural Gas System › Section 542 - Warning Signs

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a)
					 All tanks and cylinders in excess of 60 gallons capacity, except transportation
					 tanks and fuel tanks on motor vehicles, shall have the word "FLAMMABLE" painted
					 or otherwise suitably applied on each side that is readily visible. The letters
					 of this sign shall be standard type and shall have a height of at least 
					 1/12 of the
					 diameter of the tank, but need not be in excess of 1 ½ inches for tanks
					 of 575 gallons capacity or less, or 4 inches for tanks exceeding 575 gallons
					 capacity.
Transportation tanks shall have warning signs as required
						by the Department of Highway Patrol.
(b) Warning signs with the words "NO SMOKING
					 OR OPEN FLAMES PERMITTED WITHIN ___ FEET" shall be painted or otherwise
					 suitably applied in letters at least 1 ½ inches high, in sharply
					 contrasting colors on each stationary tank or on a sign posted adjacent to the
					 tank. This sign shall also be posted adjacent to all loading and unloading
					 terminals and vaporizers located more than 50 feet from the tank.
NOTE: The distance shall be that shown in the following
						table:
Volumetric Capacity of Tanks and Cylinders
								in U. S. Gallons
Minimum Distance
								From Open Flame
60 to 575 U. S. gallons
								inclusive..........................
..........................10
								feet
576 to 2,000 U. S. gallons
								inclusive..........................
..........................25
								feet
Over 2,000 U. S.
								gallons..........................
..........................50
								feet
(c) When 2 or more tanks are installed in
					 battery, the requirements of Order 542 (a) and (b) will be considered as being
					 complied with when the required warning signs are prominently displayed on all
					 exposed sides of tanks.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 1 - Unfired Pressure Vessel Safety Orders › Article 7 - Compressed and Liquefied Natural Gas System › Section 543 - Storage, Transfer and/or Vaporization of Natural Gas Within Buildings for the Purpose of Filling Motor Fuel Tanks or for Operating Stationary Internal Combustion Engines

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a)
CNG may be stored and LNG may be stored or vaporized within a building
					 or an enclosure providing that the structure is of non-combustible
					 construction, that it is used for industrial purposes only and that the floor
					 area does not exceed 500 square feet.
(b)
The space shall be used
					 exclusively for the vaporization of the CNG or LNG or for the storage of not
					 more than a total of 41,500 standard cubic feet of CNG or 500 gallons of LNG.
					 If vapors heavier than air can be present, the structure shall not be below
					 ground level and the space below the floor shall either be of solid fill or
					 else properly ventilated to the open air.
(c)
In all cases ventilation must be
					 provided at both floor and ceiling levels and shall be considered adequate when
					 no mixture of flammable gases is permitted in concentrations exceeding 20
					 percent of the lower flammability limit for the mixture. The requirements of
					 this paragraph may be met by either:
(1)
A continuously operating
					 mechanical ventilation system.
(2)
A gravity ventilation system
					 composed of a combination of wall vents at the floor level and roof
					 ventilators, or
(3)
A combination of the two.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 1 - Unfired Pressure Vessel Safety Orders › Article 10 - Safe Practices › Section 560 - Safe Practices

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) No person shall do any of the following:
(1) Remove, displace, damage, destroy, or
					 carry off any safety device, safeguard, notice, or warning for use in any
					 employment or place of employment, or interfere in any way with their use by
					 any other person (this is not intended to prohibit the removal for repair or
					 maintenance of any safety device provided such device or a suitable replacement
					 is reinstalled before the unit is replaced in service).
(2) Interfere with the use of any method or
					 process adopted for the protection of any employee, including himself, in such
					 employment or places of employment.
(3) Fail or neglect to do every other thing
					 reasonably necessary to protect the life and safety of
					 employees.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 1 - Unfired Pressure Vessel Safety Orders › Appendix A - Minimum Capacity Requirement of Relief Valves for Fire Exposure for Liquefied Natural Gas Tanks and Vaporizers

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
A1. The minimum total heat influx during a possible fire
					 exposure of an insulated container shall be computed by the applicable
					 formula:
NOTE: Equation (1) shall be used for vaporizers with
					 external insulation and Equation (2) for uninsulated vaporizers. The value of A
					 is obtained by adding the area of the shell in contact with LN-Gas and the area
					 of heat exchange surface in contact with LN-Gas.
(1) H =
					 1560C1A0.82+ Hn
where:
H = Total heat influx, Btu per hour.
C1 = Conductance of the insulation,
					 Btu/sq. ft.-hr.-deg. F. (The value of C increases with temperature and a mean
					 value for the range from -260 F to +1660 F should be used.)
A = Total exposed wetted surface area in sq. ft.
Hn = Total normal heat gain to the stored liquid without
					 fire exposures and at maximum ambient temperatures, Btu per hour.
A2. If the insulation system, including any jacketing
					 material, is such that it will disappear, deteriorate or dislodge in an
					 exposure fire, a higher heat gain will occur. This requires special
					 consideration depending upon the extent of loss of the insulating properties.
					 If only a part of the insulation is lost, the heat gain may be estimated by the
					 formula:
(2) H = (34,500 -
					 360C2)A0.82+ Hn
In this case, the value of C2 should
					 be the mean value for the range from -260° F to +100° F.
A3. The required relief valve capacity shall be computed by
					 the formula
(3) Qa = 3.09(H/L)Y(T/M)
where:
Qa = Required flow capacity of air, cu. ft. per hour at 60
					 F and 14.7 psia.
H = Total heat influx, Btu per hour from the formula (1) or
					 (2).
L = Latent heat of vaporization of the stored liquid, Btu
					 per lb. (219 may be used for LN-Gas).
T = Absolute temperature of the gas at the relief valve
					 inlet, deg. R.
M = Molecular weight of the gas (16.0 may be used for
					 LNG).
1.
					 Relocation of Appendix A filed 12-14-76; effective thirtieth day thereafter
					 (Register 76, No. 51).
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 1 - Unfired Pressure Vessel Safety Orders › Appendix D

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
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1. New
					 Appendix D filed 1-30-2002; operative 3-1-2002 (Register 2002, No.
					 5).
Note: Authority cited: Section
						142.3, Labor
						Code. Reference: Section
						142.3, Labor
						Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 2 - Boiler and Fired Pressure Vessel Safety Orders › Article 1 - Scope of these Orders › Section 750 - Application of Boiler and Fired Pressure Vessel Safety Orders

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) These orders establish minimum standards
					 for:
(1) The design, construction,
					 installation, inspection, operation, and repair of all power boilers and
					 nuclear boilers in California not specifically exempted from these
					 Orders.
(2) The design,
					 construction, installation, operation, and repair of all low-pressure boilers
					 and high-temperature water boilers in California not specifically exempted from
					 these Orders.
(3) The design and
					 construction of fired pressure vessels in California not specifically exempted
					 from these orders.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 2 - Boiler and Fired Pressure Vessel Safety Orders › Article 1 - Scope of these Orders › Section 751 - Boilers and Fired Pressure Vessels Not Subject to these Orders

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
These orders are not applicable to the following:
(a) Boilers and fired pressure vessels under
					 the jurisdiction or inspection of the United States Government.
(b) Boilers and fired pressure vessels used
					 in household service.
(c)
					 Automobile boilers and boilers used exclusively to operate highway
					 vehicles.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 2 - Boiler and Fired Pressure Vessel Safety Orders › Article 1 - Scope of these Orders › Section 752 - Variances

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) Any employer
					 may apply to the Division for a temporary order granting a variance from an
					 occupational safety and health standard. Such temporary order shall be granted
					 only if the employer files an application which meets the requirements of
					 Sections 6450 through
					 6457, inclusive, of the California
					 Labor Code.
(b) Any employer may
					 apply to the Occupational Safety and Health Standards Board for a permanent
					 variance from an occupational safety and health standard, order, or portion
					 thereof upon a showing of an alternative method, program, practice, means,
					 device or process which will provide equal or superior safety for employees.
					 Such application shall conform to the requirements of the California
					 Administrative Code, Title 8, Chapter 3.5.
1.
						Repealer and new section filed 8-12-76; effective thirtieth day thereafter
						(Register 76, No. 33).
Note: Authority cited: Section
						  142.3, Labor
						  Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 2 - Boiler and Fired Pressure Vessel Safety Orders › Article 3 - Design and Construction › Section 754 - Design and Construction of Power Boilers and High Temperature Water Boilers

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
All new power boilers and high temperature water boilers
						shall be constructed, inspected, and stamped in full compliance with the
						applicable sections of the Code, unless the design and construction of the
						boiler are accepted by the Division as equivalent to Code.
1.
						Amendment filed 11-2-66; effective thirtieth day thereafter (Register 66, No.
						38). Approved by State Building Standards Commission.
2. Repealer
						and new section filed 8-12-76; effective thirtieth day thereafter (Register 76,
						No. 33).
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 2 - Boiler and Fired Pressure Vessel Safety Orders › Article 3 - Design and Construction › Section 755 - Design and Construction of Fired Pressure Vessels

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) All fired pressure vessels shall be
					 constructed, inspected, and stamped in accordance with the Code insofar as
					 applicable. Those vessels not included in the scope of the Code shall be
					 designed and constructed in accordance with good engineering practice regarding
					 pressure vessel design for the pressure and temperature to be expected in
					 service with a factor of safety of at least four.
(b) Good engineering practice as used in this
					 article shall be construed to require the employer to provide details of design
					 and construction which will be as safe as otherwise provided by the rules in
					 the Code including shop inspection.
1.
						Repealer and new subsection (a) filed 8-12-76; effective thirtieth day
						thereafter (Register 76, No. 33).
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 2 - Boiler and Fired Pressure Vessel Safety Orders › Article 3 - Design and Construction › Section 756 - Design and Construction of Low-Pressure Boilers

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
All new low-pressure boilers shall be constructed,
						inspected, and stamped in accordance with the Code, unless the design and
						construction are accepted by the Division as equivalent to
						Code.
1.
						Repealer and new section filed 8-12-76; effective thirtieth day thereafter
						(Register 76, No. 33).
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 2 - Boiler and Fired Pressure Vessel Safety Orders › Article 3 - Design and Construction › Section 757 - Design and Construction of Nuclear Boilers

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
All pressure vessels installed as a part of a nuclear
						boiler shall be constructed, inspected, and stamped in accordance with the
						Code, unless the design and construction are accepted by the Division as
						equivalent to Code.
All piping included as a part of a nuclear boiler, up to
						and including the valve or valves required to isolate the boiler system, shall
						be constructed, inspected, and stamped in accordance with the requirements for
						pressure piping in Section I of the Code--except that the Code symbol stamp may
						be omitted from the stamping required by that section of the
						Code.
1. New
						section filed 12-17-65; effective thirtieth day thereafter (Register 65, No.
						24). Former section
						757 renumbered to
						758.
2. Repealer and new section filed 8-12-76; effective thirtieth
						day thereafter (Register 76, No. 33).
Note: Authority cited: Section
						  6307, Labor
						  Code. Additional authority cited: Section
						  142.3, Labor
						  Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 2 - Boiler and Fired Pressure Vessel Safety Orders › Article 3 - Design and Construction › Section 758 - Maximum Allowable Working Pressure of Existing Installations

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) The maximum allowable working pressure of
					 any code boiler shall be determined by the provisions of the code effective
					 when the boiler was manufactured and upon its condition, determined after an
					 internal inspection.
(b) The
					 maximum allowable working pressure of any non-code power boiler shall be
					 determined by the standards of the Code with a factor of safety not less than:
(1) Five if the boiler had been inspected and
					 reported to the Division prior to January 1, 1936.
(2) Eight if the boiler had not been
					 inspected and reported to the Division prior to January 1, 1936, and is of lap
					 seam construction.
(3) Seven if the
					 boiler had not been inspected and reported to the Division prior to January 1,
					 1936, and is of butt-strap construction.
(4) Six if of welded construction, providing
					 it can be proven to the satisfaction of the Division that the material,
					 workmanship, and details of construction are equivalent to the requirements for
					 Code boilers.
(5) The factor of
					 safety permitted at the time of last internal inspection prior to the adoption
					 of these orders; provided, however, that a lower factor of safety may be
					 allowed at the discretion of the Division.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 2 - Boiler and Fired Pressure Vessel Safety Orders › Article 4 - Installation › Section 761 - Safety Valves and Pressure Relieving Devices, Boilers

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) Each power boiler, nuclear boiler, and
					 high temperature water boiler shall have safety valves or pressure relieving
					 devices constructed, stamped and installed in accordance with the applicable
					 section of the Code, except:
(1) For existing
					 installations the stamping required by the Code at the time of original
					 installation may be accepted until the valves are replaced.
(2) Upon written request by the employer, the
					 Division may permit three-way two-port valves to be installed under two safety
					 valves, each with the required relieving capacity, provided they are so
					 installed that both safety valves cannot be closed off from the boiler at the
					 same time and provided the three-way valve will permit at least full flow to
					 the safety valve in service at all time.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 2 - Boiler and Fired Pressure Vessel Safety Orders › Article 4 - Installation › Section 762 - Safety Valves and Pressure Relieving Devices, Fired Pressure Vessels

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) Boilers (or
					 vaporizers) of the Dow-therm, mercury vapor or similar types shall be fitted
					 with adequate safety relieving devices to assure their safe operation. Safety
					 valves of Dow-therm vaporizers and similar equipment shall be removed at least
					 once each year for inspection and cleaning of any deposits that might affect
					 their operation. (To eliminate the necessity of shutting the unit down for this
					 inspection, a three-way stop valve may be installed under 2 safety valves, each
					 with the required relieving capacity, and so installed that both safety valves
					 cannot be closed off from the vaporizer at the same time; or 2 or more separate
					 safety valves may be installed with individual shutoff valves, in which case
					 the shutoff valve stems shall be mechanically interconnected in a manner which
					 will allow full required flow at all times.)
(b) Fired pressure vessels other than those
					 mentioned in (a) above shall be fitted with safety relieving devices of
					 sufficient capacity to relieve all vapor that can be generated in the vessel
					 during normal operation and shall be fitted with proper controls to assure
					 their safe operation.
1.
						Amendment filed 11-2-66; effective thirtieth day thereafter (Register 66, No.
						38). Approved by State Building Standards
						Commission.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 2 - Boiler and Fired Pressure Vessel Safety Orders › Article 4 - Installation › Section 763 - Low-Pressure Boilers

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a)
					 All low-pressure boilers shall be installed and fitted with the fittings and
					 appliances required by the Code, and any additional appurtenances required in
					 the following subsections.
(b) When
					 a hot water heating boiler is equipped with an electrically operated
					 circulating pump and electrically operated burner controls, the control
					 switches shall be labeled to show which is for the burner circuit and which is
					 for the pump circuit, or the electrically operated burner controls shall be
					 connected in the electric circuit ahead of the automatic pump switch or the
					 burner control switch shall be mechanically interlocked to the disconnect
					 switch for the circulating pumps.
(c) All low-pressure boilers shall be
					 equipped with one or more pressure relieving device adjusted and sealed so as
					 to discharge at a pressure not to exceed the maximum allowable working pressure
					 of the boiler. The combined capacity of these devices shall be such that with
					 the fuel burning equipment installed and operating at maximum capacity the
					 pressure cannot rise more than 5 psi for steam boilers or 10% for water boilers
					 above the maximum allowable working pressure of the boiler. All pressure
					 relieving devices shall be installed as required by the Code and be ASME
					 stamped and rated and shall be installed with the valve spindle vertical and
					 shall have a manual lifting device to permit periodic testing.
The discharge from all drains and pressure relieving
						devices shall be piped to a safe place of discharge and shall have no shutoff
						valves in the pipe between the pressure relieving device and point of
						discharge.
A safe place of discharge as used in this section shall
						be a location where:
(1) The discharge
					 of steam or hot water will not present a hazard to employees.
(2) The discharge of steam or water will not
					 be detrimental to any electrical or other machinery or equipment.
(3) The discharge pipe cannot be readily
					 plugged or otherwise obstructed.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 2 - Boiler and Fired Pressure Vessel Safety Orders › Article 4 - Installation › Section 764 - Blowoff Valves and Tanks

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a)
					 All boilers subject to these orders shall have blowoff valves and piping
					 installed in accordance with the Code.
(b) All blowoff pipes shall terminate at a
					 safe place of discharge and shall be adequately supported to prevent undue
					 stresses on the valves or lines, and shall not be reduced in size between the
					 blowoff valve and point of discharge.
Blowoff valves constructed with integrally threaded
						bonnets shall not be permitted.
No blowoff pipe shall discharge directly into a sewer.
						When the blowoff discharge is to be ultimately led to a sewer, local plumbing
						codes shall be consulted concerning requirements for discharging products into
						sewers.
When a blowoff tank is used, it shall be designed and
						constructed in accordance with good engineering practice for the maximum
						pressure and temperature expected during the blowdown period with a factor of
						safety of at least 4. All blowoff tanks shall be provided with means for
						cleaning and inspection.
1.
						Amendment filed 11-2-66; effective thirtieth day thereafter (Register 66, No.
						38). Approved by State Building Standards
						Commission.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 2 - Boiler and Fired Pressure Vessel Safety Orders › Article 4 - Installation › Section 765 - Means of Feeding Water to Boilers

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
All power boilers subject to these Orders shall be
						equipped with at least one means for feeding water to the boiler at the maximum
						allowable pressure. Boilers having more than 500 square feet of water heating
						surface shall have at least 2 means of feeding when required by paragraph
						PG-59(d)(2)(g) of the Code. A water supply system may be considered as a means
						of feeding water to the boiler where the water pressure in the system is not
						less than 6 percent above the pressure at which the safety valve is set to
						open. Feed piping, valves, and appurtenances shall be installed as required by
						the Code.
1.
						Amendment filed 11-2-66; effective thirtieth day thereafter (Register 66, No.
						38). Approved by State Building Standards
						Commission.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 2 - Boiler and Fired Pressure Vessel Safety Orders › Article 4 - Installation › Section 766 - Water and Pressure Gages

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
All power boilers and high-temperature water boilers
						subject to these Orders shall be equipped with water gages and pressure gages
						as required by the Code.
1.
						Amendment filed 11-2-66; effective thirtieth day thereafter (Register 66, No.
						38). Approved by State Building Standards
						Commission.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 2 - Boiler and Fired Pressure Vessel Safety Orders › Article 4 - Installation › Section 767 - Reinstallation of Secondhand Power Boilers

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
When a power boiler changes both ownership and location,
						the purchaser shall report the state serial number and the new proposed
						location to the division.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 2 - Boiler and Fired Pressure Vessel Safety Orders › Article 4 - Installation › Section 768 - Access for Inspection and Cleaning

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) Where it is impracticable to remove the
					 hood of any vertical fire-tube boiler for inspection purposes, an access
					 opening of the following dimensions shall be provided in the hood:
(1) For boilers not exceeding thirty-six
					 inches (36") diameter, not less than six inches by eight inches (6" x 8") or
					 equivalent area with a minimum dimension of six inches (6") in any
					 direction.
(2) For boilers over
					 thirty-six inches (36") diameter, not less than twelve inches by sixteen inches
					 (12" x 16") or equivalent area with a minimum dimension of eleven inches (11")
					 in any direction and a minimum diameter of fifteen inches (15") for circular
					 openings.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 2 - Boiler and Fired Pressure Vessel Safety Orders › Article 4 - Installation › Section 769 - Boiler Installation

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) Effective for boiler installation and/or
					 relocation building permits issued on or after November 1, 2002, all boiler
					 supporting structures shall be designed for the following loads:
(1) The live and dead load of the boiler as
					 prescribed in the 2001 California Building Code.
(2) Other imposed loads including those
					 resulting from wind, and seismic forces, as prescribed in the 2001 California
					 Building Code.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 2 - Boiler and Fired Pressure Vessel Safety Orders › Article 5 - Inspection › Section 771 - Boilers Not Subject to Annual Inspection

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) The following boilers are not subject to
					 annual inspection and do not require a permit to operate providing they comply
					 with all of the provisions of subsection (b):
(1) Low-pressure boilers.
(2) Miniature boilers.
(3) High-temperature water boilers.
(4) Boilers, including forced circulation
					 boilers, in which none of the following are exceeded:
(A) One hundred square feet (100 sq. ft.) of
					 heating surface.
(B) Steam drum
					 does not exceed 16 inches inside diameter.
(C) Maximum allowable working pressure does
					 not exceed 100 psi.
(D) Water
					 capacity does not exceed 35 gallons when filled to normal operating
					 level.
(E) The BTU input to the
					 burners does not exceed 400,000 BTU/hr.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 2 - Boiler and Fired Pressure Vessel Safety Orders › Article 5 - Inspection › Section 772 - Preparation of Boilers for Inspection

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) The owner or user of a boiler or boilers
					 herein required to be inspected shall, after 14 days' notice from the division,
					 prepare the boiler for internal inspection.
If the owner or user finds the date set for inspection
						not to his convenience, he shall immediately advise the division, or qualified
						inspector, and ask for a postponement and state the reasons therefor, in which
						case the inspection date may be postponed for a period not to exceed thirty
						(30) days from the date first set for inspection.
(b) To prepare a boiler for internal
					 inspection the water shall be drawn off and the boiler thoroughly washed.
					 Manhole and handhold covers and washout plugs in the boiler feed lines and
					 water column connections necessary for adequate inspection shall be removed and
					 the furnace and combustion chamber thoroughly cooled and cleaned. Enough of the
					 brickwork, refractory, or insulating material shall be removed to permit the
					 qualified inspector to determine the condition of the boiler, furnace, or other
					 parts and to enable the qualified inspector to obtain such data as is required
					 at each annual inspection. The steam gage shall be removed for testing. At the
					 discretion of the Division, data obtained by nondestructive examination may be
					 used in lieu of visual inspection.
(c) The owner or user shall prepare the
					 boiler for hydrostatic test when required by the qualified inspector. If the
					 boiler to be hydrostatically tested is connected with other boilers that are
					 under steam pressure, such connections shall be blanked off unless provided
					 with double stop valves with a free blow drain between the valves.
(d) Before a resale inspection or other
					 inspection of a secondhand boiler is made, the interior of the shell or drum
					 may be required to be descaled and cleaned, such tubes shall be removed as the
					 qualified inspector deems necessary to enable him to ascertain their condition,
					 the lagging and brickwork shall be removed, and the exterior of the shell or
					 drum shall be cleaned. No paint shall be applied before the inspection is
					 made.
1.
						Amendment filed 11-2-66; effective thirtieth day thereafter (Register 66, No.
						38). Approved by State Building Standards
						Commission.
California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 2 - Boiler and Fired Pressure Vessel Safety Orders › Article 5 - Inspection › Section 773 - Identification of Boilers

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a)
					 Qualified inspectors making the first field inspection of boilers required by
					 these Orders to have a permit to operate, shall stamp on the boiler a state
					 serial number (unless a state serial number has previously been stamped
					 thereon) which shall become a permanent means of identification. This assigned
					 number shall be made either by steel die figures not less than 
					 5/16 -inch in
					 height, or outlined by means of center punch dots, with figures not less than
					 ¾ -inch in height, and shall be stamped adjacent to the manufacturer's
					 code stamping.
(b) No state serial
					 number or code stamping shall be permanently covered by insulating material,
					 unless such number and stamping is transferred to a fixed plate where readily
					 visible outside of all insulating material.
1.
						Amendment filed 11-2-66; effective thirtieth day thereafter (Register 66, No.
						38). Approved by State Building Standards
						Commission.