As part of its integrity management regulatory scheme, the Pipeline and Hazardous Materials Safety Administration (PHMSA) is requesting comments on a draft risk modeling report.  In certain densely populated or environmentally sensitive areas, PHMSA integrity management rules require the continual evaluation of ways to reduce pipeline threats to minimize the likelihood and consequences of an incident.  Because these rules are performance based, the methodology for analyzing and assessing risk is not prescribed and the industry employs a variety of approaches.  PHMSA’s draft report similarly does not dictate a particular methodology but clearly favors probabilistic and quantitative risk models that may not be practical or effective for many operators.  Operators should take the opportunity to review and comment on the draft report to ensure that their experiences and insights with risk modeling are reflected prior to finalizing the document.  Based on a request from industry trade groups, PHMSA recently extended the comment period an additional 30 days until October 17, 2018.

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