05000397/FIN-2014003-01
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Finding | |
|---|---|
| Title | Failure to Take Corrective Actions to Address Extent of Cause for Service Water Pump Coupling Failures |
| Description | The inspectors identified a non-cited violation of 10 CFR Part 50, Appendix B
Criterion XVI, Corrective Actions for the licensees failure to implement corrective actions to address identified weaknesses in the preventative maintenance program. Specifically, the licensee failed to perform required inspections of the residual heat removal and low pressure core spray pumps which were identified during an extent of cause evaluation following the failure of service water pump 1A in June 2005. As a corrective action, the licensee asked the pump vendor to inspect the pump that was removed in May, 2013. The licensee also entered this issue into their corrective action program as AR 301887301887 This finding was more than minor because, if left uncorrected, the failure to periodically inspect the residual heat removal and low pressure core spray pumps could become a more significant safety concern. Specifically, because these pumps are subject to NRC Part 21 report 1998-51-1, involving broken cast iron suction heads in type APKD pumps, the failure to inspect could result in unrecognized degraded conditions on these components that could potentially affect pump performance. 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 does not have a cross-cutting aspect because the decision to defer required inspections of the residual heat removal pumps and low pressure core spray pumps was made in May 2007 and was not reflective of current performance. |
| Site: | Columbia  |
|---|---|
| Report | IR 05000397/2014003 Section 1R04 |
| Date counted | Jun 30, 2014 (2014Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.04 |
| Inspectors (proximate) | B Baca D Bradley D Reinert J Groom L Ricketson N Taylor P Elkmann |
| Violation of: | Technical Specification 10 CFR 50 Appendix B Criterion XVI |
| INPO aspect | |
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Finding - Columbia - IR 05000397/2014003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Columbia) @ 2014Q2
Self-Identified List (Columbia)
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