§ 936. Installation.
13 CA ADC § 936Barclays Official California Code of Regulations
13 CCR § 936
§ 936. Installation.
The installation of liquefied petroleum gas, compressed natural gas, or liquefied natural gas fuel systems on motor vehicles equipped with gaseous fuel systems certified or approved by the State Air Resources Board shall be in accordance with the following requirements:
(a) Driver, Passenger, and Luggage Compartments. Fuel supply containers on buses shall not be located in or above the passenger compartment. Fuel supply containers on vehicles other than buses shall be installed and fitted so that no gas from fueling and gaging operations or from relief valves can be released inside the driver, passenger, or luggage compartments.
(b) Fuel Supply Containers. Fuel supply containers shall meet all appropriate requirements of the ASME code, the DOT regulations, or the regulations contained in this article and shall be marked in accordance with Sections 933, 934, and 935 of this article. Cargo containers mounted on a motor vehicle, but not on a trailer or semitrailer, may be used to supply fuel for the propulsion of the vehicle when the container meets the cargo container requirements of Unfired Pressure Vessel Safety Orders, Division of Industrial Safety, Title 8, California Code of Regulations. Fuel supply containers other than cargo containers shall comply with the following requirements:
(A) By attaching bolts not less than 7/16 in. in diameter that meet SAE Standard J429 for Grade 5 threaded fasteners in the 1965 or later edition of the SAE Handbook and self-locking nuts to at least four securement points and, where bolts pierce body metal but not the frame, by reinforcing both sides of each securement point with metal plates at least 1/8 in. thick and 7 sq. in. in area; or
(c) Visibility of Required Markings. Markings of set-to-discharge pressure for safety relief devices and working pressure of fuel supply containers required by Sections 933, 934, and 935 of this article shall be visible either directly or by use of a mirror after installation. All remote filling inlets shall be visibly marked with the lowest working pressure of any fuel supply container in the system.
(3) Lines shall be located as far from the exhaust outlet as is practicable and shall direct escaping gas upward within 45 deg. of the vertical. Escaping gas shall not impinge upon fuel supply containers and shall not be directed into wheel wells, at other vehicles in traffic, or at engine air intake inlets.
(7) CNG containers may be vented to the outside of the vehicle with a flexible bag. Such bag shall be constructed of material that is nonflammable or self-extinguishing. The bag and attachments shall be capable of withstanding an internal pressure produced by a flow rate of 300 cfm with a safety factor of not less than four. The bag shall be shielded or installed in a protected location to prevent damage from unsecured objects and abrasion.
(2) A normally closed automatic shut-off valve that is held open by electrical current may be used in lieu of a manual shut-off valve and shall be marked with the words “AUTOMATIC SHUT-OFF VALVE.” The automatic shut-off valve shall be wired so it shuts off when the ignition switch is in the off or accessory positions and when engine vacuum is not present.
(2) All material, including gasket and packing material, shall be compatible with the fuel used in the system and its service conditions. Aluminum pipe, tubing, or fittings shall not be used between the container and first-stage regulator. Copper tubing, when used, shall be seamless and conform to ASTM B88 types K or L.
(g) Supply Lines. Supply lines passing through a panel shall be protected by grommets or similar devices, which shall snugly fit both the supply lines and the holes in the panel. Supply lines shall have a minimum clearance of 8 in. from the engine exhaust system unless they are shielded from exhaust heat. Supply lines shall be supported at least every 24 in. and shall be prevented from sagging. Damaged lines shall be replaced, not repaired.
(k) Bypass Relief Device. A bypass relief device shall be installed in the fuel pump or between the fuel pump and the automatic shut-off valve in the liquid fuel line to the carburetor on vehicles equipped with dual fuel systems for the use of gasoline and gaseous fuel. The relief device need not be installed on fuel pumps containing a bypass relief device as original equipment.
(n) Road Clearance. The fuel system, including the fuel supply container, shall be installed with as much road clearance as practicable. The lowest part of any component in the system, including protective guards, shall not be lower than the lowest edge of the vehicle differential housing under maximum spring deflection, except that on cargo carrying vehicles with a gross vehicle weight rating of 6,000 lbs. or more, the lowest component may be at the lowest part of the vehicle body.
Credits
Note: Authority cited: Section 2402.6, Vehicle Code. Reference: Section 2402.6, Vehicle Code.
History
1. Amendment of subsection (a) filed 8-15-77; designated effective 9-15-77 (Register 77, No. 34).
2. Amendment of subsection (a) filed 12-28-81; effective thirtieth day thereafter (Register 82, No. 1).
3. Amendment of subsection (b)(2)(A) filed 12-29-81; effective thirtieth day thereafter (Register 82, No. 1).
4. Change without regulatory effect of subsections (b) and (m)(4) filed 2-8-88; operative 3-9-88 (Register 88, No. 7).
5. Amendment of first paragraph filed 1-25-94; operative 2-24-94 (Register 94, No. 4).
6. Editorial correction of printing error in Note (Register 94, No. 4).
This database is current through 5/10/24 Register 2024, No. 19.
Cal. Admin. Code tit. 13, § 936, 13 CA ADC § 936
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