05000482/FIN-2009005-02
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Finding | |
|---|---|
| Title | Control of Transient Ignition Sources |
| Description | The inspectors identified a noncited violation of Technical Specification 5.4.1.a, for an inadequate Procedure AP-10-101, Control of Transient Ignition Sources. On October 21, 2009, the inspectors observed maintenance personnel performing weld preparation work on essential service water piping to containment cooler B using a flapper wheel. The inspectors observed that the ignition control barriers for the hot work were insufficient in that the sparks from the preparation work extended four to five feet from the job site and there was no fire watch posted. On December 4, 2003, a procedure revision inappropriately incorporated a change to the procedure where a fire watch did not have to be posted when using wire brushes, flapper wheels, polishing devices, or Rol-Lok type buffing pads mounted on power grinder motor drives or air tools. The maintenance supervisor stopped the work until a fire watch was posted. The licensee entered this into their corrective action system as Condition Report 20993. This finding is more than minor because it affected the Mitigating Systems Cornerstone attribute of Protection Against External Factors - Fires, and adversely affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. The lack of a posted fire watch could adversely affect the ability to achieve and maintain safe shutdown in the event of a severe fire in the affected area. Inspection Manual Chapter 0609, Appendix F, Fire Protection Significance Determination Process, could not be used to effectively evaluate the finding and defense-in-depth strategies because the 2003 changes to the fire watch program affected multiple fire areas and conditions. Therefore, in accordance with Inspection Manual Chapter 0609, Appendix M, the safety significance was determined by regional management review who concluded that the finding was of very low safety significance (Green). This finding was reviewed for crosscutting aspects and none were identified. The original change occurred in 2003 and was not indicative of current performance (Section 1R05.2) |
| Site: | Wolf Creek  |
|---|---|
| Report | IR 05000482/2009005 Section 1R05 |
| Date counted | Dec 31, 2009 (2009Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.05 |
| Inspectors (proximate) | G Vasquez J Drake P Jayroe R Kopriva S Alferink A Fairbanks C Alldredge C Cauffman C Long C Peabody D Graves D Loveless G Miller |
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Finding - Wolf Creek - IR 05000482/2009005 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Wolf Creek) @ 2009Q4
Self-Identified List (Wolf Creek)
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