PHMSA is withdrawing the DFR titled "Pipeline Safety: Standards Update--ASME B31.4," which published on April 24, 2026.
Source
https://www.federalregister.gov/documents/2026/07/31/2026-15579/pipeline-safety-standards-update-asme-b314Canonical document at the regulator. Always cite this URL — not the Vantage detail page — in compliance evidence.