NRC CAL – NOV (White)

On July 18, 2011, the NRC issued a violation of 10 CFR 50, Appendix B, Criterion XVI, associated with a White Significance Determination Process finding involving the failure to assure that the cause of a significant condition adverse to quality was determined and corrective actions taken to preclude repetition. Specifically, between November 3, 2008 and June 14, 2010, the licensee failed to preclude shading coils from repetitively becoming loose material in the M2 reactor trip contactor. The licensee failed to identify that the loose parts in the trip contactor represented a potential failure of the contactor if they became an obstruction; and therefore, failed to preclude repetition of this significant condition adverse to quality, that subsequently resulted in the contactor failing.