05000395/FIN-2010005-01
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Finding | |
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| Title | Failure to Correct Condition Adverse to Quality Involving Inadequate EDG Engine Driven Pump Preventative Maintenance |
| Description | The inspectors identified a non-cited violation (NCV) of 10 CFR 50, Appendix B, Criterion XVI, Corrective Action, for the licensees failure to identify and correct a condition adverse to quality following the February 10, 2010, failure of the A Emergency Diesel Generator (EDG) jacket water pump mechanical seal. Specifically, the licensee failed to identify and correct inadequacies in their EDG preventive maintenance program for monitoring engine driven pump seal leakage in accordance with vendor recommendations, leading to subsequent A EDG jacket water seal leakage going unidentified from approximately June 1, 2010, until October 20, 2010. The licensee initiated condition report (CR)-10-03861 and implemented requirements and operator training to conduct proper seal leakage monitoring during subsequent EDG operations. The inspectors determined that the licensees failure to take adequate corrective actions to identify and correct inadequacies in the EDG PM program for monitoring EDG engine driven pump seal leakage in accordance with vendor recommendations was a performance deficiency that was within the licensees ability to foresee and correct. This finding is more than minor because if left uncorrected, the issue would become a more significant safety concern, in that, the potential exists for unidentified engine driven pump seal leakage that could lead to EDG failure. This issue is associated with the equipment performance attribute of the Mitigating System cornerstone and adversely affects the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences (i.e., core damage). Specifically, the failure to take adequate corrective actions to identify inadequacies in the EDG preventive maintenance program for monitoring EDG engine driven pump seal leakage in accordance with vendor recommendations could adversely affect the reliability of the EDGs. This finding was evaluated using Inspection Manual Chapter 0609, Significance Determination Process, Phase 1 Worksheet for mitigating systems. The finding was determined to be of very low safety significance (Green) because it did not actually result in the loss of the EDG system safety function or the loss of function of a single EDG. The cause of this finding was directly related to the problem evaluation cross-cutting aspect in the corrective action program component of the Problem Identification and Resolution area because the licensee did not thoroughly evaluate the February 10, 2010, jacket water pump mechanical seal failure event and identify nonconformance with the vendor recommended visual inspections of engine driven pump seals during EDG operations (P.1(c)) |
| Site: | Summer  |
|---|---|
| Report | IR 05000395/2010005 Section 4OA2 |
| Date counted | Dec 31, 2010 (2010Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | R Carrion E Lea J Zeiler G Mccoy R Temps E Coffman R Williams |
| CCA | P.2, Evaluation |
| INPO aspect | PI.2 |
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Finding - Summer - IR 05000395/2010005 | ||||||||||||||||||||||||||||||||||||||||
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Finding List (Summer) @ 2010Q4
Self-Identified List (Summer)
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