Final rule · 2025-12070

Pipeline Safety: Standards Update-API STD 620

This DFR amends PHMSA's regulations to incorporate by reference the updated industry standard API STD 620, Design and Construction of Large, Welded, Low-Pressure Storage Tanks. This updated standard will maintain or improve public safety, prevent regulatory confusion, reduce compliance burdens on stakeholders, and satisfy a mandate in the National Technology Transfer and Advancement Act (NTTAA) of 1995.