05000482/FIN-2012005-05
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Finding | |
|---|---|
| Title | Inadequate Bases Change Causes Violation of LOW Temperature Overpressure Protection Technical Specification |
| Description | The inspectors identified a non-cited violation of Technical Specification 3.4.12, Low Temperature Overpressure Protection System, for exceeding the maximum allowed number of centrifugal charging pumps capable of injecting to the reactor coolant system during low temperature operations. Inspectors found that Wolf Creek inappropriately made a technical specification bases change that allowed a second charging pump to be capable of injection, contrary to the wording of the associated technical specification. Wolf Creek submitted a request for a technical specification interpretation. In response, the NRCs Office of Nuclear Reactor Regulation stated that Technical Specification 3.4.12 allows one charging pump to be capable of injection during low temperature operations. This was entered into the Wolf Creek corrective action program as Condition Report 53012. The failure to operate Wolf Creek in accordance with the technical specifications during low temperature conditions is a performance deficiency. The performance deficiency was more than minor because it impacted the Initiating Events Cornerstone objective of configuration control to limit the likelihood of those events that upset plant stability and challenge critical safety functions during shutdown as well as power operations. Using Inspection Manual Chapter 0609, Significance Determination Process, Appendix G, Checklist 2, the inspectors determined this finding to be of very low safety significance, because it did not cause the loss of mitigating capability of core heat removal, inventory control, power availability, containment control, or reactivity control. Inspectors did not identify a cross-cutting aspect because the Technical Specification 3.4.12 Bases change occurred in 1999 and is not indicative of current licensee performance |
| Site: | Wolf Creek  |
|---|---|
| Report | IR 05000482/2012005 Section 1R22 |
| Date counted | Dec 31, 2012 (2012Q4) |
| Type: | NCV: Green |
| cornerstone | Initiating Events |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.22 |
| Inspectors (proximate) | C Long C Osterholtz C Peabody J Laughlin N O'Keefe S Hedger T Buchanan |
| INPO aspect | |
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Finding - Wolf Creek - IR 05000482/2012005 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Wolf Creek) @ 2012Q4
Self-Identified List (Wolf Creek)
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