For threaded gas piping systems of 200 feet or less with a working pressure of 10 psig, what is the minimum test pressure required?

The minimum test pressure required for threaded gas piping systems of 200 feet or less with a working pressure of 10 psig is established to ensure the integrity and safety of the piping system. In this case, the minimum test pressure must be at least 1.5 times the maximum allowable working pressure to ensure that the system can withstand any excess pressure, potential leaks, or weak points that might exist.

Given that the working pressure is 10 psig, multiplying this by 1.5 yields a minimum test pressure of 15 psig. However, regulations typically specify rounding up to a standard testing pressure that is safe and practical to work with. The number that most closely aligns with safety and is above this calculated minimum is 50 psig.

This standard is in place to ensure a comprehensive inspection of the piping system under conditions that closely mimic the potential for stress during operation, ultimately supporting safe gas delivery and reducing the risk of leaks or failures in the system.