05000482/FIN-2011004-07
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Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | On June 1, 2011, Wolf Creek identified voiding in component cooling water train A when a system engineer was reviewing plant computer data. Testing revealed voiding in both trains of component cooling water and Wolf Creek entered Technical Specification 3.0.3. All the voids were vented. Subsequent engineering evaluation found that both trains were always operable. Wolf Creek root cause found that significant voids were trapped between valves EG HV-15 and EG HV-131, as well as between valves EG HV-16 and EG HV-131 following maintenance and fill and vent Procedure SYS EG-400. These portions of the piping were not recognized as trapping air and were not able to be vented. The inspectors used Inspection Manual Chapter 0609.04, Phase 1 - Initial Screening and Characterization of Findings, a significance determination screening was performed and screened the issue to very low safety significance (Green) because there was no loss of operability or functionality. Technical Specification 5.4.1, Procedures, requires, in part, that written procedures shall be established, implemented, and maintained covering the applicable procedures recommended in Regulatory Guide 1.33, Revision 2, Appendix A, dated February 1978. Regulatory Guide 1.33, Appendix A, Section 3.e, requires, in part, that instructions for filling and venting the component cooling water system should be covered by written procedures. Contrary to the above, from April 30 to June 1, 2011, the licensee failed to provide adequate instructions for filling and venting the component cooling water system. Specifically, station procedures allowed for gas accumulations in the component cooling water system, which affected the proper operation of the pumps during startup. This issue was documented in the licensees corrective action program as Condition Reports 25918 and 33925. |
| Site: | Wolf Creek  |
|---|---|
| Report | IR 05000482/2011004 Section 4OA7 |
| Date counted | Sep 30, 2011 (2011Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | C Peabody G Miller J Bashore L Carson L Willoughby N Makris S Alferink C Long |
| INPO aspect | |
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Finding - Wolf Creek - IR 05000482/2011004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Wolf Creek) @ 2011Q3
Self-Identified List (Wolf Creek)
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