What is the required pressure for testing a new gas piping system in Maine?

The required pressure for testing a new gas piping system in Maine is established to ensure the system is safe and free of leaks before it is put into operation. The correct standard is to test at a pressure of 3 psi for a duration of at least 10 minutes. This testing method ensures that the piping system can withstand gas pressures and any potential leaks can be detected effectively within that period.

Testing at 3 psi allows for a balance between safety and practicality, as it is sufficiently above atmospheric pressure to identify any weak points in the system while still being manageable for technicians. A duration of at least 10 minutes also provides ample time to observe any pressure drop that may indicate a leak.

In contrast, lower pressures and shorter testing durations may not adequately guarantee the integrity of the piping system, while higher pressures may introduce unnecessary risks. Therefore, adhering to this specific pressure and time frame is crucial for ensuring the overall safety and reliability of the gas piping system in Maine.