05000482/FIN-2012005-06
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Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | Wolf Creek identified a violation of 10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, for an improperly installed Swagelok fitting that resulted in emergency diesel generator A being unable to complete its mission time due to excessive jacket water leakage. The fitting caused fretting over time until a leak occurred on March 12, 2012, about 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> into a 24-hour surveillance run on emergency diesel generator A. A hardware failure analysis concluded that the resulting crack will grow quickly to the point of unacceptable jacket water leakage within 10-15 hours, thereafter. In this condition, so the engine was unable to meet its mission time of 7 days. The affected tubing was replaced the following day, and training was conducted for maintenance personnel. The violation is more than minor because it affects the equipment performance attribute of the Mitigating Systems Cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Using Inspection Manual Chapter 609, Appendix A, Exhibit 2, Mitigating Systems Cornerstone screening questions, Section A, the finding was determined to be of very low safety significance (Green) because the finding did not result in the emergency diesel generator being out of service for greater than its allowed outage time, and did not result in an actual loss of function of one or more trains of equipment designated as high safety-significant in accordance with the licensees maintenance rule program for more than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Since the finding is of very low safety significance, was identified by Wolf Creek, and has been entered into the licensees corrective action program as Condition Report 50360, this violation is being treated as a non-cited violation consistent with Section 2.3.2 of the NRC Enforcement Policy. |
| Site: | Wolf Creek  |
|---|---|
| Report | IR 05000482/2012005 Section 4OA7 |
| Date counted | Dec 31, 2012 (2012Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| 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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