05000482/FIN-2010004-03
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Finding | |
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| Title | Licensee-Identified Violation |
| Description | Title 10 CFR 21.3, requires, in part, that commercial grade components have their critical characteristics identified such that they will provide reasonable assurance of performing their intended safety function. On January 21 - 22, 2010, Wolf Creek identified commercial grade nonsafety class O-rings and gaskets installed in the safety-related emergency diesel generators. These components did not go through a dedication process. Wolf Creek found that a safety classification analysis from 1992 allowed the use of nonsafety O-rings and gaskets since the jacket water systems have a connected nonsafety demineralized water system to makeup the jacket water losses. This effectively deleted the safety-related procurement requirements to obtain basic components with the critical characteristics for these parts. However, the safety classification utilized the nonsafety demineralizer system to replace jacket water losses during design basis events. Wolf Creek identified that a nonsafety O-ring could not be used to support a safety-related diesel, nor could the demineralizer system be used to support the diesel. Some parts could be subsequently dedicated because spares from the same lot number were available in the warehouse for testing of critical characteristics. However, others could not be dedicated. Subsequent Wolf Creek reviews have found several other nonsafety gaskets and O-rings in the safety-related emergency diesels. The inspectors determined this finding to be of very low safety significance because it did not result in the loss of operability of a diesel generator. This issue was entered into the licensees correction action program as Condition Reports 23024, 22989, 23576, 23819, 23978, 23049, 22985, and 22986 |
| Site: | Wolf Creek  |
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| Report | IR 05000482/2010004 Section 4OA7 |
| Date counted | Sep 30, 2010 (2010Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | G Guerra D Allen C Long C Peabody T Buchanan |
| INPO aspect | |
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Finding - Wolf Creek - IR 05000482/2010004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Wolf Creek) @ 2010Q3
Self-Identified List (Wolf Creek)
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