05000397/FIN-2013005-01
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Finding | |
|---|---|
| Title | Failure to Translate Internal Flooding Design into Station Procedures |
| Description | The inspectors identified a non-cited violation of 10 CFR Part 50, Appendix B, Criterion III, Design Control, for the licensees failure to translate the design of water resistant doors used to protect emergency core cooling rooms from internal flooding into procedures used to control those doors. The licensee entered this finding into their corrective action program as Action Request AR 298068. The performance deficiency was more than minor because it affected the procedure quality attribute of the mitigating systems cornerstone objective and adversely affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. This finding is of very low safety significance (Green) because: (1) the finding was not a deficiency affecting the design or qualification of a mitigating system; (2) the finding did not represent a loss of system and/or function; (3) the finding did not represent an actual loss of function of a single train for greater than its technical specification allowed outage time; and (4) the finding does not represent an actual loss of function of one or more non-technical specification trains of equipment designated as high safety-significant in accordance with the licensees maintenance rule program for greater than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. This finding had a cross-cutting aspect in the area of human performance associated with the decision making component because the licensee failed to verify the validity of the underlying assumptions used in the stations flooding analysis and failed to identify possible unintended consequences when making changes to the barrier impairment procedure. |
| Site: | Columbia  |
|---|---|
| Report | IR 05000397/2013005 Section 1R06 |
| Date counted | Dec 31, 2013 (2013Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.06 |
| Inspectors (proximate) | M Hairep Hernandezr Lantz S Hedger B Baca D Bradley J Dykert J Groom J Laughlin J O'Donnell L Ricketson M Hayes |
| Violation of: | Technical Specification - Procedures 10 CFR 50 Appendix B Criterion III, Design Control Technical Specification |
| CCA | H.14, Conservative Bias |
| INPO aspect | DM.2 |
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Finding - Columbia - IR 05000397/2013005 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Columbia) @ 2013Q4
Self-Identified List (Columbia)
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