If a compartmented tank has double-walled bulkheads, when may compartments be tested?

When dealing with compartmented tanks that feature double-walled bulkheads, testing the compartments simultaneously is crucial for various reasons. Testing all compartments at the same time ensures that the integrity of the entire tank system is assessed under consistent conditions. This approach helps in identifying leaks or weaknesses that may not be apparent when testing compartments individually.

Testing concurrently allows for the detection of any issues related to the interaction between the compartments. It helps verify that the bulkheads are secure and that each compartment can function properly within the overall tank structure. This comprehensive testing method aligns with industry standards and practices for maintaining safety and compliance in UST systems. By conducting simultaneous tests, any corrective actions needed can be addressed more efficiently, thereby minimizing risks associated with underground storage tanks.