PHMSA Notice: Gas & Hazardous Liquid Pipeline Risk Models
[Docket No. PHMSA-2018-0050]
PHMSA published this notice seeking public comments on a report developed to support improvements in gas and hazardous
liquid pipeline risk models titled "Pipeline Risk Modeling-Overview of Methods and Tools for Improved Implementation"
(Pipeline Risk Modeling Report). Pipeline risk models are a foundational part of the assessment of operational pipeline risk.
Federal pipeline safety integrity management (IM) regulations require pipeline operators to use risk assessments.
Based on the results of pipeline inspections and failure investigation findings, both PHMSA and the National Transportation
Safety Board (NTSB) have identified general weaknesses in the risk models often used by pipeline operators in performing risk
assessments for their IM programs. The Pipeline Risk Modeling Report considers the major types of pipeline risk models, and the
effectiveness of each type in supporting risk assessments, as applied to pipeline operator decisions.
The original deadline to submit comments was September 17, 2018. PHMSA received a request to extend the comment period to
allow stakeholders more time to evaluate the notice. PHMSA has concurred with this request and has extended the comment
period for an additional 30 days. The closing date for filing comments on the notice published August 16, 2018, (83 FR 40843)
is extended from September 17, 2018, to October 17, 2018. Comments should reference Docket No. PHMSA–2018–0050 and may be
submitted via the E-Gov website.
For a copy of this Notice from the Federal Register, contact Jessica Foley.