At what intervals should relief valves on containers over 2,000 water gallons be tested?

The recommended interval for testing relief valves on containers over 2,000 water gallons is every 5 years from the date of installation, with subsequent tests every 12 years. This schedule ensures that the relief valves, which are crucial for safety and proper operation, maintain their functionality and reliability over time. Regular testing is essential to prevent potential failures that could lead to dangerous situations, such as overpressure conditions in the container.

Testing every 5 years allows for routine checks of the valves' conditions, while the longer interval of every 12 years following those checks aligns with industry standards aimed at ensuring the valves can still effectively release pressure when necessary. This practice balances the need for safety with practical maintenance schedules for large storage containers.