05000482/FIN-2010007-04
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Finding | |
|---|---|
| Title | Emergency Diesel Generator Specified Rating did not Address Engine Operation at Design Basis Extreme Meteorological Temperature Conditions |
| Description | Green. The team identified a Green noncited violation of 10 CFR Part 50, Appendix B, Criterion III, Design Control, which states, in part, that measure
shall be established to assure that applicable regulatory requirements and the design basis are correctly translated into specifications, drawings, procedure and instructions. Specifically, prior to September 29, 2010, the licensee failed to ensure that the design bases inputs in the emergency diesel generato equipment specification were bounded by expected operational values. The licensee failed to evaluate the effects of the identified design basis maximu local meteorological conditions on the rating for the emergency diesel generators which could have affected the capability of safety-related equipment to respond to initiating events. This finding was entered into the licensees corrective action program as Condition Report 00028695. The team determined that failure to properly incorporate the licensing design basis for extreme local meteorological temperature conditions as a design input in the emergency diesel generator equipment specification was a performance deficiency. This finding was more than minor because it was associated with the design control attribute of the Mitigating Systems Cornerstone and affected the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Specifically, the design basis analysis did not ensure that the diesel generators could perform their design safety function at the maximum design temperature. In accordance with NRC Inspection Manual Chapter 0609.04, Phase 1 - Initial Screening and Characterization of Findings, a significance determination screening was performed and determined this finding was of very low safety significance (Green) because it was a design or qualification deficiency confirmed not to result in loss of operability or functionality. This finding did not have a crosscutting aspect because the most significant contributor did not reflect current licensee performance. |
| Site: | Wolf Creek  |
|---|---|
| Report | IR 05000482/2010007 Section 1R21 |
| Date counted | Dec 31, 2010 (2010Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.21 |
| Inspectors (proximate) | B Correll C Baron D Strickland J Adams S Kobylarz T Farnholtz |
| INPO aspect | |
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Finding - Wolf Creek - IR 05000482/2010007 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Wolf Creek) @ 2010Q4
Self-Identified List (Wolf Creek)
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