What is the gas pressure test duration commonly required for new piping?

• A. 10 minutes
• B. 5 minutes
• C. 20 minutes
• D. 30 minutes

Answer: (A)

The main idea is to verify the integrity of newly installed gas piping by pressurizing it and watching for leaks over a set period. Ten minutes is the standard duration used for this test because it provides enough time for any slow leaks to show up as a drop in pressure while keeping the process practical and efficient. If the system is held at the test pressure for only a shorter time, a slow leak might go undetected; longer durations aren’t typically required by the practice and simply add unnecessary delays. In practice, the piping is pressurized to the required test pressure and the pressure is monitored for the ten-minute period to confirm the system remains tight before proceeding.