Is a high-pressure leak test necessary if more than 20 feet of gas piping is added to an existing system?

A high-pressure leak test is mandated when more than 20 feet of gas piping is added to an existing system to ensure the integrity and safety of the entire gas piping system. This requirement exists to confirm that there are no leaks in the newly installed sections of piping that could pose safety risks. The high-pressure test is critical because it allows for the detection of any small leaks that might not be noticeable under lower pressures or during other forms of testing.

When significant alterations like adding extensive lengths of piping occur, it is fundamental to perform a comprehensive assessment to maintain safety standards. This not only ensures that the new piping conforms to strict regulations but also prevents hazards that could arise from leaks, such as potential explosions or carbon monoxide poisoning.

Other testing methods, such as soap testing, may be more suitable for smaller repairs or short lengths of piping but do not provide the same level of assurance when significant changes have been made. Therefore, a high-pressure leak test is essential for safeguarding both the installation and the safety of the occupants in the vicinity of the gas system.