Constellation Energy Nuclear Group's (CENG) Calvert Cliffs nuclear plant unit 1 located in Maryland, US went offline on 27 August 2011, when a piece of aluminum siding propelled by wind gusts hit the nuclear facility’s main transformer.
The company said at the time of shut down all safety systems operated as designed and therefore they have declared an unusual event as required by the federal regulations.
CENG continued a comprehensive site reviews as specified in the Calvert Cliffs emergency response plan.
The CENG fleet structure team has been activated to see that the necessary support is being provide at all CENG locations impacted by the storm.
The company’s RE Ginna and Nine Mile Point nuclear facilities in New York are fully operational.
All CENG facilities have emergency safety procedures in place, which include early and extensive preparation in lieu of storms.