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Subchapter 7. General Industry Safety Orders
Group 20. Flammable Liquids, Gases and Vapors
Article 145. Tank Storage

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§5585. Atmospheric Tanks.

(a) Atmospheric tanks shall be built in accordance with approved standards of design. Atmospheric tanks may be built in accordance with:

(1) Underwriters' Laboratories, Inc., Standard For Steel Aboveground Tanks for Flammable and Combustible Liquids UL142-1972; Standard for Steel Underground Tanks for Flammable and Combustible Liquids, UL58-1972; or Standard for Steel Inside Tanks for Oil Burner Fuel, UL80-1968.

(2) American Petroleum Institute Standards No. 12A, Specification for Oil Storage Tanks with Riveted Shells, Seventh Edition, September 1951 or No. 650, Welded Steel Tanks for Oil Storage, Fifth Edition 1973.

(3) American Petroleum Institute Standards No. 12B, Specification for Bolted Production Tanks, Eleventh Edition, May, 1958 and Supplement I, April, 1962; No. 12D, Specification For Large Welded Production Tanks, Seventh Edition, August, 1957 and Supplement I, March, 1965; or No. 12F, Specification for Small Welded Production Tanks, Sixth Edition, March, 1968. Tanks built in accordance with these standards shall be used only as production tanks for storage of crude petroleum in oil-producing areas.

(b) Low pressure tanks and pressure vessels may be used as atmospheric tanks.

(c) Atmospheric tanks shall not be used for the storage of a flammable or combustible liquid at a temperature at or above its boiling point.

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