iii. A fire in the tank room/vault Shut-down should be accomplished via an automatically operating safety shut-off valve. Locate the safety shut-off valve as close to the tanker truck connection point as possible.
Fuel Pumping and Transfer System
1. Isolate fuel pumps located inside buildings, at grade level, as follows: a. Provide a cut-off room with a minimum fire rating of 1 hour and locate the room along an outside wall with openings accessible to firefighters. Pumps may be located in the main fuel tank room. b. Provide a minimum 4 in. curb across all door openings of the pump room c. Ensure that all floors and wall are liquid tight. 2. Isolate fuel pumps located inside buildings, either above or below grade level, as follows: a. Provide a concrete or masonry vault. Design the vault to contain the entire contents of the fuel tank plus a minimum of a 2 in. freeboard through the use of curbs and dikes. Provide an emergency drainage system in the pump room or vault or provide a special protection system. b. As an option, pumps may be located in a properly arranged and protected main fuel tank vault. 3. Arrange and protect fuel pumps located inside buildings as follows: a. Provide positive displacement pumps sized to provide the needed flow rate. b. Arrange the pump to take suction from the top of the fuel tank. Elevate the pumps to the same elevation as the top of the fuel tank or provide an anti-siphon device. Locate the anti-siphon device as close to the tank outlet as possible. If a pump is arranged to take suction from the bottom of a tank and the pump is located in a separate room/vault from the tank, provide a safety shut off valve that can be interlocked to shut down in the event of a leak or fire at the point of pipe entry into the pump room/vault. c. Provide a pressure relief valve down stream of the positive displacement pump and pipe back to tank. d. Provide automatic sprinkler protection in the pump rooms/vaults designed to deliver a density of 0.25 gpm/ft 2 (10 mm/min) over the tank room area. Extend a sprinkler down from the ceiling to within 2 ft (0.6 m) of the pumps. 4. Arrange piping located inside buildings that is concealed or in non- manufacturing occupancies as follows: a. Provide welded, double-wall, steel pipe and fittings in all areas outside the tank room, pump room and generator room. An
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