In relation to gas pressure testing, what is the minimum pressure regardless of design pressure?

In gas pressure testing, the minimum pressure required regardless of the design pressure is established to ensure the integrity of the gas piping system. The standard practice in the industry is to use a pressure of 3 psi as the minimum baseline for conducting tests. This is intended to sufficiently verify that the system can hold pressure and is free from leaks, ensuring safety and proper functionality.

Testing at a minimum of 3 psi allows for a stringent assessment of the piping's performance under pressure. If a system can successfully maintain this pressure without any significant drop over a designated testing period, it can be reasonably assured that the installation is leak-free and safe for operation.

Ultimately, using a pressure lower than the established minimum could result in undetected leaks due to insufficient pressure to force gas through small openings, leading to dangerous situations. Therefore, adhering to the 3 psi minimum requirement helps to align with safety protocols and compliance with industry regulations.