Challenges of Converting Pipelines to Hydrogen Service

(P&GJ) — ASME B31.8, ASME B31.4, and CSA Z662 have well-deserved international reputations as best-in-class, evidenced by their frequent reference by documents within other jurisdictions. However, the standards don't contain explicit requirements to address the design, construction and operational challenges presented by transporting gaseous hydrogen at transmission pressures.