The team identified a finding of very low safety significance involving a non-cited violation of
10 CFR 50, Appendix B, Criterion XVI, Corrective Action, in that, Entergy did not properly evaluate and take adequate corrective actions for a
condition adverse to quality associated with an intake de-watering event on September 14, 2007. Specifically, a fish intrusion event resulted in a significant lowering of intake level and challenged the continued availability of the A loop of salt
service water (
SSW). Entergys issue prioritization, operability review, and subsequent evaluation did not adequately assess and correct the plant response relative to the safety-related
SSW design and licensing bases. Entergy entered the issue into their corrective action system, implemented short-term corrective actions, and completed an
operability assessment for the affected equipment. This finding is more than minor because it is associated with the external factors attribute (loss of heat sink) for the
Mitigating Systems Cornerstone and affected the cornerstone objective of ensuring the availability, reliability and capability of systems that respond to
initiating events to prevent undesirable consequences. The team determined the finding was of very low safety significance (Green) because it did not result in the loss of system safety function. This finding has a cross-cutting aspect in the area of Problem Identification and Resolution, Corrective Action Program Component, because Entergy did not adequately evaluate a
condition adverse to quality, including properly classifying, prioritizing, and evaluating for operability (
IMC 0305, Aspect
P.1(c)). (1R21.2.1.2