05000219/FIN-2009003-01
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Finding | |
|---|---|
| Title | Medium Voltage Cables Maintained Submerged for Extended Period of Time |
| Description | The inspectors identified a NCV of 10 CFR 50, Appendix B, Criterion XVI, Corrective Action, because Exelon had not implemented effective actions to minimize water accumulation and submergence of medium voltage cables contained in the turbine building closed cooling water (TBCCW) heat exchanger pit as recommended by their cable conditioning monitoring program. Exelons corrective actions included revising equipment operator instructions to direct them to ensure that cables were not maintained submerged. This issue has been entered into Exelons corrective action program. The finding was more than minor in accordance with IMC 0612, Appendix B (Section1-3), Issue Screening, because it was associated with the equipment performance attribute of the mitigating systems cornerstone and affected the cornerstone objective to ensure the availability, reliability and capability of systems that respond to initiating events to prevent undesirable consequences. In accordance with IMC 0609.04 (Table4a), Phase 1 Initial Screening and Characterization of Findings, the finding was determined to be of very low safety significance (Green). The performance deficiency had a cross-cutting aspect in the area of problem identification and resolution, operating experience (IMC 0305, Aspect P.2(b)), because Exelon did not implement and institutionalize operating experience through changes to station processes, procedures, and equipment. Specifically, Exelon did not change operations instructions or plant equipment to better monitor and remediate the presence of water in the TBCCW heat exchanger pit to minimize the submergence of medium voltage cables as recommended by internal and external operating experience |
| Site: | Oyster Creek |
|---|---|
| Report | IR 05000219/2009003 Section 1R06 |
| Date counted | Jun 30, 2009 (2009Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.06 |
| Inspectors (proximate) | S Pindale J Kulp M Ferdas T Fish R Nimitz S Chaudhary R Bellamy H Gray |
| CCA | P.5, Operating Experience |
| INPO aspect | CL.1 |
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Finding - Oyster Creek - IR 05000219/2009003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Oyster Creek) @ 2009Q2
Self-Identified List (Oyster Creek)
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