NRC CAL – NOV (White)

On February 14, 2012, the NRC issued a Notice of Violation to Palisades Nuclear Plant for violations of 10 CFR Part 50, Appendix B, Criterion III "Design Control" and Criterion XVI "Corrective Action" that were categorized as one White Significance Determination Process finding Specifically, in December 2007, the licensee failed to verify the adequacy of the safety related service water pump (SWP) coupling design to confirm that the coupling material was adequate for the environment and working conditions for which it would be subjected. As a result, the licensee failed to identify and evaluate a new failure mechanism which was introduced into the system in the form of intergranular stress corrosion cracking (IGSCC). In addition, on August 9, 2011, the licensee failed to preclude repetition of a significant condition adverse to quality when a coupling on a SWP failed due to IGSCC.