UL Standard for Safety Steel Aboveground Tanks for Flammable and Combustible Liquids
|Publication Date:||1 December 1972|
These requirements cover horizontal and vertical welded steel tanks intended for the storage aboveground of flammable and combustible liquids at pressures between atmospheric and 0.5 pounds per square inch gauge. They are intended for use with non-corrosive, stable liquids only, which have a specific gravity not exceeding that of water.
Tanks covered by these requirements are cylindrical in shape, and are fabricated, inspected and tested for leakage before being shipped from the factory as completely assembled vessels. They are intended for stationary installations in accordance with the Flammable and Combustible Liquids Code of the National Fire Protection Association, NFPA No. 30.
These requirements do not cover welded steel production tanks employed in oil field service.