05000269/FIN-2012002-02
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Finding | |
|---|---|
| Title | Failure to Adequately Test Safety-Significant Medium Voltage Cables |
| Description | An NRC-Identified finding was identified for the licensees failure to develop an adequate procedure for performing cable degradation testing on medium voltage cables. Consequently, a degraded condition of one of the conductors from CT-5 to the standby buses was not addressed for approximately 18 months and subsequently failed accruing approximately 30 days of unavailability to replace the cable. The performance deficiency (PD) was determined to be more than minor as it affected the Mitigating Systems cornerstone attribute of equipment performance in that failure to identify the degraded condition resulted in unplanned unavailability of the CT-5 power path. The finding was of very low safety significance because the Y phase cable from CT-5 was capable of performing its function from June 2010 until December 22, 2011. The cause of this finding was directly related to the implementation of operating experience aspect of the Operating Experience component of the Problem Identification and Resolution cross-cutting area, in that, the licensee failed to incorporate industry guidance to establish test acceptance criteria for degradation of power cables insulation. |
| Site: | Oconee  |
|---|---|
| Report | IR 05000269/2012002 Section 1R12 |
| Date counted | Mar 31, 2012 (2012Q1) |
| Type: | Finding: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.12 |
| Inspectors (proximate) | J Bartley A Sabisch S Walker A Vargas-Mendez G Ottenberg J Hamman K Ellis G Crespo M Riley |
| CCA | P.5, Operating Experience |
| INPO aspect | CL.1 |
| ' | |
Finding - Oconee - IR 05000269/2012002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Oconee) @ 2012Q1
Self-Identified List (Oconee)
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