this is from ifc, should be the same in 58
TABLE 6104.3 LOCATION OF LP-GAS CONTAINERS
e. The following shall apply to above-ground
containers installed alongside buildings: 1.
LP-gas containers of less than a 125-gallon water capacity are allowed next to the building they serve where in compliance with Items 2, 3 and 4. 2. Department of Transportation (DOTn) specification
LP-gas containers shall be located and installed so that the discharge from the
container pressure relief device is not less than 3 feet horizontally from building openings below the level of such discharge and shall not be beneath buildings unless the space is well ventilated to the outside and is not enclosed for more than 50 percent of its perimeter. The discharge from
LP-gas container pressure relief devices shall be located not less than 5 feet from exterior sources of ignition, openings into direct-vent (sealed combustion
system) appliances or mechanical
ventilation air intakes. 3. ASME
LP-gas containers of less than a 125-gallon water capacity shall be located and installed such that the discharge from pressure relief devices shall not terminate in or beneath buildings and shall be located not less than 5 feet horizontally from building openings below the level of such discharge and not less than 5 feet from exterior sources of ignition, openings into direct vent (sealed combustion
system) appliances, or mechanical
ventilation air intakes. 4. The filling connection and the vent from
liquid-level gauges on either DOTn or ASME
LP-gas containers filled at the point of installation shall be not less than 10 feet from exterior sources of ignition, openings into direct vent (sealed combustion
system) appliances or mechanical
ventilation air intakes.