05000261/FIN-2008004-02
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Finding | |
|---|---|
| Title | Failure to maintain emegency diesel generator service water valve configuration control |
| Description | The inspectors identified a Green NCV of Technical Specification 5.4.1 for the failure on August 11 to maintain configuration control of the service water system for the B emergency diesel generator (EDG) when a service-water isolation valve to the EDG was closed outside of an approved process. The failure to maintain equipment configuration control of the closed service water isolation valve is contrary to Regulatory Guide 1.33 which requires the licensee to implement procedures affecting quality, which includes procedures maintaining equipment configuration control. This failure directly led to this valve remaining closed after the licensee electrically aligned the EDG for automatic start and declared it available on August 14. With this valve closed and the EDG aligned for auto-start, the EDG would have started without cooling water, rendering the EDG incapable of meeting its designed safety functions. As immediate corrective actions, the licensee performed a comprehensive valve and switch line-up on the EDG and issued an operations night order which required operators to perform certain interim measures when operating components without procedural guidance or clearance order control, to ensure that a positive means of control has been established. The licensee also plans to revise appropriate operating procedures to clarify requirements for performing valve and switch line-ups after maintenance activities. This issue was entered into the licensee CA program for resolution. This finding was more than minor and affects the Mitigating Systems Cornerstone because it is similar to example 5.c of IMC 0612 Appendix E, Examples of Minor Issues. In example 5.c, this finding meets the Not minor if criteria because although work was still in progress when the finding was identified, the licensee had already returned the EDG to service, in that the licensee had considered the EDG available and had electrically aligned the EDG to auto-start. The finding has a cross-cutting aspect in the area of Human Performance because the licensee did not appropriately coordinate work activities by incorporating actions to address the operational impact of work activities, in that the licensee did not coordinate the closure of SW-90 in a manner to track or restore this valve to its safety related position after maintenance activities were completed. (H.3(b)) (Section 1R19 |
| Site: | Robinson  |
|---|---|
| Report | IR 05000261/2008004 Section 1R19 |
| Date counted | Sep 30, 2008 (2008Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.19 |
| Inspectors (proximate) | R Hagar R Musser E Morris |
| CCA | H.5, Work Management |
| INPO aspect | WP.1 |
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Finding - Robinson - IR 05000261/2008004 | |||||||||||||||||||||||||||||||||
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Finding List (Robinson) @ 2008Q3
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