• Two more problem areas discovered at Yankee
    March 30,2013
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    Staff Report

    VERNON — Two additional water infiltration areas have been discovered at the Vermont Yankee nuclear plant’s switchgear rooms.

    The Nuclear Regulatory Commission said Friday it had been informed by Entergy Nuclear that the additional water drainage paths into the manhole system of the switchgear rooms had been identified by engineers. The engineers were evaluating the system after they discovered a failed flood seal, which allowed water to get into the manhole system.

    The switchgear rooms are nerve centers for electrical cables from the control room to other parts of the plant. Water never reached the electrical systems, both Entergy and the NRC said.

    Robert Williams, a spokesman for Entergy Nuclear, said the two problem areas were being fixed immediately.

    “This ensures against water intrusion,” he said.

    Last week, a dredging operation of the plant’s intake structure on the Connecticut River resulted in water getting into a manhole, which in turn, left 2 feet of water in the conduit underneath the switchgear rooms.
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