Above Ground UL 142 Single Wall Storage Tanks
Fire codes, environmental policies and SPCC (spill prevention, control and countermeasure) regulations have a secondary containment requirement for aboveground storage tanks. To meet this requirement, UL 142 double wall tanks are commonly used. UL 142 single wall storage tanks are typically used for the storage of non-hazardous products, such as water, where the risks of pollution are not high. They also are commonly used for petroleum products and chemicals, where open top containment boxes or concrete dike structures provide a secondary containment.