05000317/FIN-2010005-03
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Finding | |
|---|---|
| Title | Inadequate Functionality Review of 0C Diesel Degraded Condition |
| Description | The inspectors identified a finding of very low safety significance because Constellation did not conduct an adequate functionality review following failure of the 0C diesel generator (DG) (the station blackout (SBO) diesel) battery charger. Specifically, Constellation did not take into account the Appendix R mission time in the functionality review. As a result, Constellation did not recognize that the 0C diesel was not available for its Appendix R function with its associated battery charger out-of-service (OOS), lmmediate corrective actions included entering this issue in the corrective action program (CAP) and providing instructions to operators to declare the 0C diesel not available anytime its associated battery charger is taken OOS. Additional corrective actions planned include changing 0l-264, 125 Volt Direct Current (VDC) System, to reflect that the battery charger is required to support the 0C diesel functionality. The finding is more than minor because it was associated with the equipment performance attribute of the Mitigating Systems cornerstone and affected the cornerstone objective to ensure availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences, Specifically, Constellation did not recognize that the 0C diesel generator was not available for its Appendix R function with its associated battery charger OOS. The inspectors determined that the finding is of very low safety significance because it only affected the ability to reach and maintain cold shutdown conditions. The finding has a cross-cutting aspect in the area of human performance, resources, because Constellation did not ensure complete, accurate, and up-to-date procedures (0l-264) were available and adequate to assure nuclear safety (H.2.c of IMC 0310). |
| Site: | Calvert Cliffs  |
|---|---|
| Report | IR 05000317/2010005 Section 1R15 |
| Date counted | Sep 30, 2010 (2010Q3) |
| Type: | Finding: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | G Hunegs S Kennedy R Rolph C Crisden J Hawkins S Ibarrola D Lawver M Osborn S Hammann |
| CCA | H.7, Documentation |
| INPO aspect | WP.3 |
| ' | |
Finding - Calvert Cliffs - IR 05000317/2010005 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Calvert Cliffs) @ 2010Q3
Self-Identified List (Calvert Cliffs)
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