NRC CAL – NOV (Yellow)

On October 31, 2007, a Notice of Violation was issued for a violation associated with a Yellow Significance Determination finding involving a violation of 10 CFR 50, Appendix B, Criterion XVI. Specifically, the licensee failed to promptly identify and correct a significant condition adverse to quality that resulted in the Unit 2 containment sump suction to residual heat removal pump 2A, an encapsulated valve, failing to stroke full open during testing on April 29, 2006, and on January 5, 2007. The licensee did not assure that the causes of the condition, including rust/corrosion accumulation on valve components in the valve encapsulation dating back to 2001, were determined and corrective action taken to preclude repetition.