Pipeline Safety Alert
(by James Curry, Keith Coyle and Brianne Kurdock)
This is the second alert in a four-part Babst Calland series on the Pipeline and Hazardous Materials Safety Administration (PHMSA or the Agency) final rule amending the federal safety standards for gas pipeline facilities at 49 C.F.R. Part 192 (Rule) published in the Federal Register on October 1, 2019. The first alert reviewed new requirements for materials verification and reconfirmation of maximum allowable operating pressure (MAOP).
This alert discusses PHMSA’s extension of integrity assessment requirements to areas outside high consequence areas (HCAs). The third alert will review the new recordkeeping requirements. Finally, Babst Calland will survey the remaining Rule topics.
Assessing Areas Outside of High Consequence Areas – 49 C.F.R. §§ 192.3 and 192.710
PHMSA has introduced new regulations requiring an operator to conduct integrity assessments outside of HCAs. The Agency has categorized these areas as Moderate Consequence Areas (MCAs).
What is in the Rule?
- Moderate Consequence Area Definition. A “moderate consequence area” is an onshore area that is within a potential impact circle containing either five or more buildings intended for human occupancy or any portion of the paved surface, including shoulders, of a designated interstate, freeway, or expressway, or principal arterial roadway with four or more lanes, as defined by the Federal Highway Administration.
- Initial Assessment and Reassessment Interval. Operators with an onshore, steel, transmission pipeline segment with a MAOP greater than or equal to 30% SMYS located in a Class 3 or Class 4 location or a piggable MCA segment must assess these segments by July 3, 2034 and every ten years thereafter at intervals of 126 months.
