§ 933.1. Grandfathered Liquefied Petroleum Gas Requirements.
13 CA ADC § 933.1Barclays Official California Code of Regulations
13 CCR § 933.1
§ 933.1. Grandfathered Liquefied Petroleum Gas Requirements.
Fuel systems using liquefied petroleum gas (LPG) installed before January 1, 2000, shall comply with Section 933 above, or shall meet the following requirements in addition to those in Section 936 of this title:
(a) Fuel Supply Container. Each LPG fuel supply container shall be constructed, inspected, and permanently marked in accordance with the appropriate DOT regulation or ASME code. Containers constructed to the DOT regulations shall have a minimum service pressure of 240 psi. Containers constructed to the ASME code shall have a minimum working pressure of 250 psi. Every container shall be equipped with an outage valve or fixed liquid level gage to indicate when the container is 79.8% full. A float gage does not meet the requirements for an outage valve or a fixed liquid level gage. Outage valves on containers installed on school buses shall be tamper-resistant or contained within a locked compartment.
(b) Two or More Containers. When two or more containers are used, a backflow check valve shall be installed in each fuel line to prevent passing of fuel between tanks during filling operations. A hydrostatic relief valve with a pressure setting not lower than 350 psi nor higher than 500 psi shall be installed between the backflow check valves and the gaseous fuel cutoff valve to the carburetor.
(d) Valves. Valves shall be of a type that has been tested and listed by UL or by other nationally recognized testing laboratories as meeting the UL requirements for LPG. All valves shall be securely mounted and shielded or installed in a protected location to prevent damage from vibration and unsecured objects.
(1) Safety Relief Valves. One or more spring-loaded internal safety relief valves shall be installed directly in each fuel container in communication with the vapor space. The markings showing “set to discharge pressure” shall be visible after the valves are installed in the container. Safety relief valves for DOT fuel supply containers shall be approved by the Bureau of Explosives, and the valve setting shall be as required by the Bureau. The safety relief valve setting for ASME containers shall not be less than 100% or more than 110% of the maximum allowable service pressure of the container.
Tank surface area (sq ft) | Air flow rate (cfm) | ||
|---|---|---|---|
20 or less | 626 | ||
25 | 751 | ||
30 | 872 | ||
35 | 990 | ||
40 | 1,100 | ||
45 | 1,220 | ||
50 | 1,330 | ||
55 | 1,430 | ||
60 | 1,540 | ||
65 | 1,640 | ||
70 | 1,750 | ||
75 | 1,850 | ||
80 | 1,950 | ||
85 | 2,050 | ||
90 | 2,150 | ||
95 | 2,240 | ||
100 | 2,340 | ||
110 | 2,530 | ||
115 | 2,630 | ||
120 | 2,720 | ||
125 | 2,810 | ||
130 | 2,900 | ||
135 | 2,990 | ||
140 | 3,080 | ||
145 | 3,170 | ||
150 | 3,260 | ||
155 | 3,350 | ||
160 | 3,440 | ||
165 | 3,530 | ||
170 | 3,620 | ||
175 | 3,700 | ||
180 | 3,790 | ||
185 | 3,880 | ||
190 | 3,960 | ||
195 | 4,050 | ||
200 | 4,130 |
(2) Excess Flow Valve. An internal excess flow valve, designed to close when maximum volume escapes through the smallest connection in the supply line system, shall be installed in every fuel supply container outlet except relief valve or gaging device outlets. The excess flow valve shall have a bypass not to exceed a No. 60 drill size opening to allow equalization of pressure.
(3) Check Valve. Inlet connections in the fuel supply container shall be fitted with either an internal and external check valve, or an internal check valve with an adjacent or remote manual shut-off valve. The inlet of the filling system shall be capped, except when filling, to withstand the maximum service pressure of the container. All containers installed after January 1, 1973, shall be equipped for remote filling exterior to the vehicle compartment with an internal and external check valve installed in the container.
(f) Pressure Reducing Regulator. An automatic pressure reducing regulator or a regulating vaporizer designed to withstand a service pressure of at least 250 psi shall be installed between the LPG fuel supply container and the carburetor. All regulators and vaporizers shall be of a type that has been tested and listed by UL or other nationally recognized testing laboratories as meeting the UL requirements for LPG. The regulator or vaporizer shall be installed so that its weight is not placed on, or supported alone by, the attached tubing or flexible lines.
(g) Vents. Every compartment in which an LPG container is installed shall be vented to the atmosphere unless all piping and connectors are exterior to the compartment. The vent or vents shall be installed at the lowest practicable point of the compartment and shall have an open area totaling not less than 3 square inches.
(h) LPG Hose for High Pressure Liquid or Vapor Use. Hose and hose assemblies shall have a working pressure of not less than 350 psi and a burst pressure of not less than 1750 psi. Hose shall be reinforced with corrosion-resistant wire braid and shall be of a type that has been tested and listed by UL or by other nationally recognized testing laboratories as meeting the UL requirements for LPG. Hose shall have the following permanent identification markings in letters and numerals at least 1/8 in. in height at intervals of 24 in. or less:
Credits
Note: Authority cited: Section 2402.6, Vehicle Code. Reference: Section 2402.6, Vehicle Code.
History
1. Renumbering of former section 933 to new section 933.1, including amendment of section heading, first paragraph and subsection (g), filed 8-9-99; operative 9-8-99 (Register 99, No. 33).
This database is current through 5/10/24 Register 2024, No. 19.
Cal. Admin. Code tit. 13, § 933.1, 13 CA ADC § 933.1
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