05000482/FIN-2011002-04
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Finding | |
|---|---|
| Title | Failure to Follow 10 CFR 50.65 a(2) for Main Control Board Annunciator Power Supply Failures |
| Description | The inspectors identified a noncited violation of 10 CFR 50.65 a(2), involving the failure to demonstrate that the performance of main control board annunciator power supplies was effectively controlled through preventive maintenance such that the annunciators remained capable of performing their intended function. The licensee entered this issue into the corrective action program and will develop corrective actions as part of Condition Report 34681. The failure to properly evaluate the failed main control board annunciator power supplies, establish performance goals, and monitor their performance is considered a performance deficiency. This finding is more than minor because it is associated with the Mitigating Systems Cornerstone attribute of equipment performance and it adversely affects the cornerstone objective ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Using the Inspection Manual Chapter 0609, Significance Determination Process, Phase 1 Worksheets, the finding is determined to have very low safety significance since it did not result in a loss of system safety function, an actual loss of safety function of a single train for greater than its technical specification allowed outage time, or screen as potentially risk significant due to a seismic, flooding, or severe weather initiating event. This finding was determined to have a crosscutting aspect in the area of problem identification and resolution associated with the corrective action program because the licensee failed to properly classify, prioritize, and evaluate a condition adverse to quality P.1(c) (Section 1R12). |
| Site: | Wolf Creek  |
|---|---|
| Report | IR 05000482/2011002 Section 1R12 |
| Date counted | Mar 31, 2011 (2011Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.12 |
| Inspectors (proximate) | G Guerra C Smith L Carson G Miller B Tindell C Long C Peabody A Fairbanks D Reinert C Alldredge |
| CCA | P.2, Evaluation |
| INPO aspect | PI.2 |
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Finding - Wolf Creek - IR 05000482/2011002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Wolf Creek) @ 2011Q1
Self-Identified List (Wolf Creek)
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