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Report: Nuclear Plant Failed to Prevent Flooding During Ida

Report: Nuclear Plant Failed to Prevent Flooding During Ida, Claims Journal, By Dave Collins | November 15, 2021  Operators of the Millstone nuclear power complex in Connecticut were too late in activating storm protection protocols when the remnants of Hurricane Ida hit the East Coast in September, resulting in minor flooding at the plant, federal regulators said Friday.

The Nuclear Regulatory Commission report said Dominion Energy, which runs the Millstone plant in Waterford along Long Island Sound, violated federal requirements, but deemed the violations of “very low safety significance” and did not issue penalties. The flooding did not affect any nuclear or safety equipment, the report said.

The commission, however, said Dominion’s “performance deficiency was more than minor” and that “required steps to protect risk significant structures, systems, and components from external flooding were not taken until after the consequential rainfall event was in progress.”…………………

The Nuclear Regulatory Commission report said the plant’s operators should have activated flood prevention measures before the storm hit, including closing flood gates, based on forecasts made earlier in the day. But they did not do so until after 8 p.m., when heavy rains already were falling. Two flood gates were not closed at all during the storm, resulting in minor flooding in an area near the Unit 2 reactor, the report said.

The commission said Dominion “did not take timely actions to place the plant in a safe condition prior to the arrival of a major storm.”………….

November 16, 2021 - Posted by | incidents, USA

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