Ul Standard for Safety Glass-Fiber-Reinforced Plastic Underground Storage Tanks for Petroleum Products, Alcohols, and Alcohol-Gasoline Mixtures Second Edition; Reprint with Revisions Through and Including May 12, 2006
Covers spherical or cylindrical, atmospheric-type tanks of glass-fiber-reinforced plastic that are intended for the underground storage of petroleum-based flammable and combustible liquids. These tanks are completely assembled and tested for leakage before shipment. They are intended for installation and use in accordance with ANSI/NFPA 31-1981, Installation of Oil-Burning Equipment, and ANSI/NFPA 30-1981, Flammable and Combustible Liquids Code. This standard does not cover optional accessories for these tanks, such as heating coils or hotwells; nor does it cover compartmented tanks.