A
Severity Level IV, Non-Cited Violation of
10 CFR50, Appendix B, Criterion XVI, was identified regarding four examples of ineffective corrective actions. The ineffective corrective actions were associated with the failure to perform a 50.59 review for operation in single element level reactor water level control versus three element, a repetitive runback of the
reactor recirculation pumps, inappropriate resolution to a missed
PMT associated with the
reactor recirculation pump motor generator system, and a repetitive trip of a
reactor protection system electrical protection assembly breaker. These examples of ineffective corrective actions were determined to be more than minor because they indicated an adverse performance trend. This violation was not subjected to a cornerstone significant determination process, and is, therefore, a no color finding, in accordance with NRC Manual Chapter 0610*, Appendix E.
