What is the purpose of secondary containment in UST systems?

The purpose of secondary containment in Underground Storage Tank (UST) systems is to provide additional protection against leaks and spills. Secondary containment systems are designed to hold any product that may leak from the primary tank, effectively containing it and preventing it from reaching the environment. This is crucial for minimizing environmental impacts, safeguarding soil and groundwater, and ensuring compliance with regulations.

When a primary tank fails or develops a leak, the secondary containment system captures any leaked fuel, allowing for proper management and cleanup without harming the surrounding area. This containment is an essential feature in the design of UST systems, as it addresses the significant risks associated with potential fuel releases.

Secondary containment can come in various forms, such as double-walled tanks or external containment berms, which offer reliable and effective protection against the hazards associated with fuel storage.