05000317/FIN-2010005-01
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Finding | |
|---|---|
| Title | Inadequate Corrective Actions Associated with Submerged SR Cables |
| Description | The inspectors identified a non-cited violation (NCV) of 10 CFR Part 50, Appendix B, Criterion XVl, Corrective Actions, because Constellation did not establish and take adequate measures for conditions adverse to quality associated with submerged safety related (SR) cables including the 1A diesel generator (DG) cables. As a result, SR cables were subjected to a submerged environment for unknown or extended periods. lmmediate corrective action included entering this issue into their corrective action program (CAP), conducting an operability determination for the 1A DG, and increasing the frequency of manhole inspections. The finding is more than minor because it was associated with the Mitigating Systems cornerstone attribute of equipment performance and affected the associated cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Specifically, repeated submergence of medium voltage cables can cause excessive aging and degradation in the exposed sections of cable, which could significantly shorten its qualified life and cause unexpected failures. The inspectors determined that the finding is of very low safety significance because the finding is a design or qualification deficiency confirmed not to result in a loss of operability. This finding had a cross-cutting aspect in the area of problem identification and resolution, operating experience (OE), because Constellation did not implement and institutionalize OE through changes to station processes and procedures associated with submerged cables. |
| Site: | Calvert Cliffs  |
|---|---|
| Report | IR 05000317/2010005 Section 1R06 |
| Date counted | Sep 30, 2010 (2010Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.06 |
| Inspectors (proximate) | G Hunegs S Kennedy R Rolph C Crisden J Hawkins S Ibarrola D Lawver M Osborn S Hammann |
| CCA | P.5, Operating Experience |
| INPO aspect | CL.1 |
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Finding - Calvert Cliffs - IR 05000317/2010005 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Calvert Cliffs) @ 2010Q3
Self-Identified List (Calvert Cliffs)
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