05000298/FIN-2012003-13
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Finding | |
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| Title | Fail to Correct a Condition Adverse to Quality for Determining the Number of Multiply Starts for a Single Diesel Generator Starting Air Accumulator |
| Description | The inspectors identified a non-cited violation of 10 CFR Part 50, Appendix B, Criterion XVI, Corrective Actions, for the licensees failure to prepare an adequate design calculation demonstrating that a single diesel generator starting air accumulator was capable of performing multiple starts of an emergency diesel generator. The licensee entered this deficiency into their corrective action program for resolution as Condition Report CR-CNS-2012-03039. The licensees failure to prepare an adequate design calculation demonstrating that a single diesel generator starting air accumulator was capable of performing multiple starts of an emergency diesel generator was a performance deficiency. The performance deficiency was determined to be more than minor because it was associated with the design control attribute of the Mitigating Systems Cornerstone, and affected the associated objective to ensure availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences, and is therefore a finding. The inspectors evaluated the finding using Inspection Manual Chapter 0609.04, Phase 1 Initial Screening and Characterization of Findings. The inspectors determined that the finding is of very low safety significance (Green) because the finding: (1) was not a design or qualification issue confirmed not to result in a loss of operability or functionality; (2) did not represent an actual loss of safety function of system or train; (3) did not result in the loss of one or more trains of nontechnical specification equipment; (4) did not screen as potentially risk significant due to seismic, flooding, or severe weather initiating event. The finding was determined to have a cross-cutting aspect in the area of human performance associated with the decision making component because the licensee failed to use conservative assumptions and conduct effectiveness reviews to validate the underlying assumptions when determining the number of multiple starts on one diesel generator starting air accumulator. |
| Site: | Cooper |
|---|---|
| Report | IR 05000298/2012003 Section 4OA2 |
| Date counted | Jun 30, 2012 (2012Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | G Pick G George L Carson J Josey V Gaddy C Alldredge B Hagar C Henderson |
| CCA | H.14, Conservative Bias |
| INPO aspect | DM.2 |
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Finding - Cooper - IR 05000298/2012003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Cooper) @ 2012Q2
Self-Identified List (Cooper)
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