UL 142

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1.1 These requirements cover steel atmospheric tanks intended for aboveground storage of noncorrosive, stable flammable, and combustible liquids that have a specific gravity not exceeding that of water.

1.2 These tanks are intended for installation and use in accordance with the Flammable and Combustible Liquids Code, NFPA 30; the Standard for Installation of Oil-Burning Equipment, NFPA 31; the Motor Fuel Dispensing Facilities and Repair Garages, NFPA 30A; and the Uniform Fire Code published by the International Fire Code Institute.

1.3 Tanks covered by these requirements are fabricated, inspected and tested for leakage before shipment from the factory as completely assembled vessels.

1.4 These requirements do not apply to tanks covered by the Standard for Welded Steel Tanks for Oil Storage, API 650; the Specification for Field-Welded Tanks for Storage of Production Liquids, API 12D; and the Specification for Shop-Welded Tanks for Storage of Production Liquids, API 12F.

1.5 These requirements do not cover seismic loading.

1.6 These requirements do not cover tanks intended to be used as oil/water separators.

1.7 Geometries or special constructions not specifically covered in these requirements shall be investigated on an individual basis.