How many UL tanks standards?

The UL Standards for tanks that store flammable and combustible liquid are:

For underground tanks:
• UL 58, Steel Underground Tanks for Flammable and Combustible Liquids
• UL 1746, External Corrosion Protection Systems for Steel Underground Storage Tanks
• UL 1316, Glass-Fiber-Reinforced Plastic Underground Storage Tanks for Petroleum Products, Alcohols, and Alcohol-Gasoline Mixtures

For aboveground tanks:
• UL 142, Steel Aboveground Tanks for Flammable and Combustible Liquids
• UL 2085, Insulated Aboveground Tanks for Flam-mable and Combustible Liquids

This article will concentrate on the UL Standards for underground tanks storing flammable and combustible liquid. They are: UL 58, UL 1746 and UL 1316. Future articles will cover API and UL Standards for above-ground tanks.

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