Progress: Addressed, Monitoring
DOT Relevance: 192.501 192.517
Hydrogen pipe embrittlement testing falls under Subpart J (Test Requirements) of 49 CFR 192. Per the Code, This subpart prescribes minimum leak-test and strength-test requirements for pipelines.
An ASTM standard (ASTM F519) has been created to provide for hydrogen pipeline embrittlement evaluation.
As this is a relatively new topic, even though an ASTM document has been established, the subject should still be monitored.
Once the adequacy of ASTM F519 has been evaluated against the ongoing embrittlement research, the established standard should be incorporated by reference into the federal code.