Leak checks determine if the propane piping system is suitable for service and must be performed on the vapor distribution piping system immediately after turning on the gas in a new gas system or a system that has been restored after an interruption of service. If leakage is indicated, shut off the gas until the necessary repairs have been made. As opposed to a pressure test, a leak check includes the piping system connected to the appliance(s).
The type of testing instrument used in performing a leak check depends on the type of leak check being performed. For a high pressure leak check, the testing instrument is placed after the first stage regulator and before the second stage regulator. This test usually uses a 30 psi gauge.
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For more information about CETP and CETP E-Learning, get in touch with the Propane Education & Research Council's CETP Program Manager, Courtney Gendron, firstname.lastname@example.org.