- The transfer operation is not performed where the public is invited or where there is unusual exposure to life and property.
- The tank vehicles are approved by the Chief.
Repair garages for the conversion and repair of vehicles that use CNG, liquefied natural gas (LNG), hydrogen or other lighter-than-air motor fuels shall be in accordance with Sections 2311.7 through 23188.8.131.52 in addition to the other requirements of Section 2311.
- Repair garages where work is not performed on the fuel system and is limited to exchange of parts and maintenance not requiring open flame or welding on the CNG-, LNG-, hydrogen- or other lighter-than-air-fueled motor vehicle.
- Repair garages for hydrogen-fueled vehicles where work is not performed on the hydrogen storage tank and is limited to the exchange of parts and maintenance not requiring open flame or welding on the hydrogen-fueled vehicle. During the work, the entire hydrogen fuel system shall contain a quantity that is less than 200 cubic feet (5.6 m3) of hydrogen.
Repair garages used for the repair of natural gas- or hydrogen-fueled vehicles shall be provided with an approved mechanical ventilation system. The mechanical ventilation system shall be in accordance with the California Mechanical Code and Sections 23184.108.40.206 and 23220.127.116.11.
Failure of the ventilation system shall cause the fueling system to shut down.
The ventilation rate shall be not less than 1 cubic foot per minute per 12 cubic feet [0.00139 m3 × (s • m3)] of room volume.
- Mechanical ventilation systems that are interlocked with a gas detection system designed in accordance with Sections 2311.7.2 through 2318.104.22.168.
- Mechanical ventilation systems in repair garages that are used only for repair of vehicles fueled by liquid fuels or odorized gases, such as CNG, where the ventilation system is electrically interlocked with the lighting circuit.