Progress: Addressed, Not Adequately
DOT Relevance: 192.623
Section 192.623 details the maximum allowable operating pressures for low pressure distribution systems.
It is not yet clear if MAOP determination methods need to be altered for hydrogen high pressure distribution systems.
At this time, no change is anticipated in ASME B31.12 relative to ASME B31.8.
Standards for maximum allowable operating pressure for hydrogen pipelines must be incorporated by reference into the federal code.