Customer Meters, Regulators, and Service Lines (12)

Customer Meters, Regulators, and Service Lines (12)

Criticality: Medium
Progress: Not Addressed
Score: 24
DOT Relevance: 192.351 192.383

Description of Key Area

Subpart H (Customer Meters, Service Regulators, and Service Lines) of 49 CFR 192 prescribes minimum requirements for installing customer meters, service regulators, service lines, service line valves, and service line connections to mains.

Discussion of Criticality

The criticality is listed as medium because distribution mains are considered to be the highest priority, and sequentially the first item to be addressed when changing from gas pipelines to hydrogen pipelines.

Discussion of Progress

No information found.


ASME B31.12 requirements are the same as those for ASME B31.8. Different pressures for hydrogen service may require special attention. It is presumed that any unique requirements would be derived from natural gas standards. Standards for hydrogen pipelines should be established and incorporated by reference into the federal code.