What standard must supply tanks conform to for above-ground installations?

Supply tanks for above-ground installations must conform to UL 142, which is the Standard for Steel Aboveground Tanks for Flammable and Combustible Liquids. This standard specifically provides requirements for the design, construction, and testing of above-ground tanks to ensure they can safely contain flammable and combustible liquids, thus minimizing the risk of spills or leaks that could lead to hazardous situations.

UL 142 accounts for various factors, including tank material, thickness, environment, and the specific type of liquids stored, ensuring they can withstand both operational stresses and environmental conditions. Following this standard is crucial for maintaining safety and compliance with regulations in the handling and storage of hazardous liquids.

The other standards listed address different aspects of safety and compliance. For instance, UL 58 focuses on underground storage tanks, NFPA 30 addresses the flammable and combustible liquids code for both above and below-ground installations, and EPA 40 pertains to environmental protection regulations. Each has its specific focus, but for above-ground supply tanks, UL 142 is the pertinent standard to ensure safety and compliance.