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Section of Leidy Line Remains Out of Service After Rupture

A section of Williams' Leidy Line in northeast Pennsylvania that ruptured earlier this month remains out of service, and the company does not yet know when repairs will be completed, a spokesman said.

The line ruptured June 9 in Lycoming County, prompting the evacuation of more than 100 residents and forcing Williams to reroute natural gas in the area (see Daily GPI, June 11). No injuries were reported, and the evacuation order was lifted hours later.

The U.S. Pipeline and Hazardous Materials Safety Administration (PHMSA) issued a Corrective Action Order on June 12, authorizing the company to return the line to full service, spokesman Chris Stockton said. But he added Monday that "the timeline for complete restoration of service on the line has not been determined at this time."

Leidy delivers Marcellus Shale natural gas from northeast Pennsylvania to the Transcontinental Gas Pipeline (Transco). A bidirectional system consisting of multiple pipes, the Leidy Line is capable of moving 3.5 Bcf/d. Both Williams and PHMSA are continuing to investigate the cause of the failure.

Volumes on the system have not been curtailed, with no impact to natural gas receipts or deliveries. Stockton said the rupture occurred on a 14-mile segment of Leidy's B line. The company is rerouting gas and making deliveries through the A and C lines, which run parallel to the isolated segment, he said.

Last week, the failed pipe section was shipped to an independent metallurgist to help determine the cause of the failure. Stockton said it would likely "take several months before the root cause analysis is complete and the exact cause determined."

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