Maximum Allowable Operating Pressure: Low Pressure Distribution
Systems (16.10)
Criticality: Medium
Progress: Addressed, Not Adequately
Score: 12
DOT Relevance: ยง192.623
Description of Key Area
Section 192.623 details the maximum allowable operating pressures
for low pressure distribution systems.
Discussion of Criticality
It is not yet clear if MAOP determination methods need to be
altered for hydrogen high pressure distribution systems.
Discussion of Progress
At this time, no change is anticipated in ASME B31.12 relative to
ASME B31.8.
Recommendations
Standards for maximum allowable operating pressure for hydrogen
pipelines must be incorporated by reference into the federal code.
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