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MWRA MetroWest Water Supply Tunnel Shaft 5A Pipe Break: Pipe Failure Scenario Report

The report describes the possible failure scenarios for the MetroWest Tunnel, a ten-foot diameter pipe that ruptured in 2010, disrupting potable water service to 2 million users in the Greater Boston area. The report concludes that the pipe ruptured due to the failure of the studs holding two lengths of pipe together.

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