External Corrosion ID'd as Cause of 2015 Williams Pipeline Rupture

PA Media Group, September 30, 2016

In a report issued by the U.S. Pipeline and Hazardous Materials Safey Administration (PHMSA), an investigation into the June 9, 2015 natural gas pipeline rupture near Willaimsport, Pennsylvania has determined that contributing factors to the incident were localized coating failure and stress corrosion pitting.  The conclusions confirm an earlier determination by the pipeline operator, Oklahoma-based Williams Partners, that the failure in its Transco transmission line was caused by a form of corrosion.  The 34 foot rupture forced nearby road closures and the evacuation of about 150 people.

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