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Tensile Tests (14.2)

Criticality: High
Progress: Addressed, Not Adequately
Score: 20
DOT Relevance: §192.501 – §192.517

Description of Key Area

Tensile 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.”

Discussion of Criticality

Tensile testing is a critical area because it is one of the procedures to test the integrity of the material to be used for hydrogen pipe. Tensile testing is a recommended test for hydrogen piping and a recommended test in general for any material.

If composite materials are used for hydrogen pipelines, tensile tests may not be relevant. Other forms of testing may be more appropriate for composite materials and polyethylene pipe materials.

Discussion of Progress

No information found.

Recommendations

ASME B31.12 will incorporate tensile tests if they are necessary for design safety. Standards for test requirements for hydrogen pipe should be established and incorporated by reference into the federal code.