Tag / Ravi



70% Loss in Wall Thickness, Pressure Drop Eyed in Columbia Rupture

The wall thickness of a section of pipe on the 20-inch diameter Columbia Gas Transmission system that ruptured Tuesday in West Virginia was significantly deteriorated, said National Transportation Safety Board (NTSB) investigators Thursday. There also was a pressure drop on the line, but the magnitude of the decrease is unknown as was whether drop was the result of the rupture or its cause.

December 17, 2012