Final rule · 2025-19342

Pipeline Safety: Standards Update-API STD 620

PHMSA is confirming the effective date for the DFR that appeared in the Federal Register on July 1, 2025. The DFR amended PHMSA's regulations to incorporate by reference the updated industry standard American Petroleum Institute (API) Standard (STD) 620, "Design and Construction of Large, Welded, Low-Pressure Storage Tanks."