NRC CAL – NOV (White)

On July 31, 2013, the NRC issued a Notice of Violation (NOV) to Exelon Generation Company, LLC for a violation of Technical Specification Section 5.4.1, Procedures, associated with a White Significance Determination Process finding involving the failure of Dresden personnel to establish a written procedure to address the effect of an external flooding scenario on the plant. Specifically, prior to November 21, 2012, procedure DOA 0010-04, Floods, did not account for reactor vessel inventory make-up during an external flooding scenario up to and including the probable maximum flood event which could result in reactor vessel water level lowering below the top of active fuel.