I have been working with several clients who are on a Hydrogen Fuel journey. It is fun to get deep into process safety protection schemes regarding NFPA 2 and ASME B31.12 and see the similarities and extra code requirements when dealing with large H2 gas systems. One of the interesting items regarding H2 piping is a “Leakage Survey,” which applies to “Industrial Plants.”
There is an ongoing debate about this “problem” with GH2 tubing and piping, and such the industry is attempting to make the argument that pressure and leak testing should be done with GH2. However, the AMSE B31.12 committee did not buy into this argument and still requires pressure and leak testing to be done with a NON-FLAMMABLE gas…
IP-10.7.3 Test Fluid