A finding of very low safety significance (Green) and an associated
NCV of
10 CFR Part 50, Appendix B, Criterion XVI, Corrective Action, was self-revealed for the failure to promptly identify and correct an oil leak that subsequently rendered a safety-related pump
inoperable. Maintenance staff discovered an oil leak near a safety-related pump and informed Operations staff of the leak but the licensee failed to identify the source of the leak for 5 days and, therefore, failed to take prompt corrective actions. Once identified, the licensee repaired the damaged instrument tube and restored the pump to service. The finding was determined to be more than minor because the finding was associated with the
Mitigating Systems Cornerstone attribute of Equipment Performance and affected the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to
initiating events to prevent undesirable consequences. Specifically, the oil leak ultimately rendered the pump
inoperable. The finding was determined to be of very low safety significance because a Phase 2
SDP determined the risk to be very low. This finding had an associated cross-cutting aspect of Problem Identification and Resolution, Corrective Action Program, Issue Identification (P.1 (a))
