What is the minimum test duration for gas piping systems per 500 feet of pipe?

The minimum test duration for gas piping systems is established to ensure that any potential leaks in the system can be adequately identified and addressed. A duration of 1/2 hour, or 30 minutes, is deemed sufficient for this purpose, especially for lengths of pipe up to 500 feet. This testing period allows for the pressures to stabilize and for any gradual leaks to be detected over time.

This standard emphasizes the importance of safety in gas piping installations and maintenance. It ensures that joints, fittings, and other components are checked under pressure for integrity before the system is placed into service. If a longer test duration were required, it could lead to unnecessary delays in project timelines without significantly increasing safety assurance for these smaller segments of piping.