Gas Piping Test
Purpose:
To test the gas piping, risers and valves for leaks
Equipment:
- A gauge, mercury manometer, or similar device
- A source for air to provide continuous flow at pressure.
Procedure:
The gas system is pressurized with air to a minimum of 3 psi or 48 oz per square inch or 14 inches water column or 6 inches of mercury column according to the HUD code. Once the pressure in the system is kept for at least 10 minutes without any drop, the test is complete. The leakage can be checked with soupy water and bubble test. Where leakage is located, the affected portion of the piping system shall be repaired or replaced and retested.