PHMSA proposes updating inspection standards for hazardous liquid breakout tanks

The Pipeline and Hazardous Materials Safety Administration is proposing to update federal rules for inspecting breakout tanks, which are storage vessels used by pipeline operators to manage surges or temporarily hold hazardous liquids. Currently, the rule references a 2001 version of an industry standard. PHMSA wants to switch to the fifth edition of that standard, issued in 2014 with updates through July 2025.

Why it matters: This is primarily an administrative update that modernizes which technical manual regulators rely on and allows more flexible inspection scheduling. For pipeline operators, it means potentially lower compliance costs and less frequent mandatory physical inspections if their risk models support longer intervals. For the public, the practical impact is minimal in terms of immediate safety changes, as the agency maintains that the updated standard still ensures tank integrity.

Who it affects

• Pipeline operators who manage hazardous liquid transport systems

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This is a proposed rule from the Transportation Department’s PHMSA published in the Federal Register; you should check the full document for specific technical requirements before relying on this summary.

Agency: Transportation Department, Pipeline and Hazardous Materials Safety Administration
Source: Federal Register — read the official document