05000280/FIN-2009004-06
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Finding | |
|---|---|
| Title | Ineffective action for ELU performance deficiencies |
| Description | The inspectors identified a Green NCV of Surry operating licenses, section 3.I Fire Protection, for failure to promptly identify and correct a condition adverse to fire protection in regard to Appendix R emergency lighting unit performance failures, due to inadequate configuration control of the emergency lights defeat switch. Failure to reposition the switch following maintenance and or inadvertent switch manipulation has over time led to numerous Appendix R emergency lights being discovered non-functional. Corrective action to address the failure to restore the switch following maintenance has been taken and actions to prevent inadvertent manipulation are being evaluated (CR 352214). The finding is more than minor because it adversely affected the external factors attribute (fire) of the mitigating system cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Specifically, the reliability and availability of the emergency lighting units (ELUs) was affected. The finding, evaluated per MC-0609, Appendix F, Fire Protection Significance Determination Process, was determined to be of very low safety significance (Green). The finding affected post fire safe shutdown and was assigned a low degradation rating because the issue did not have a significant impact on safe shutdown operations because there was not a simultaneous wide spread failure of the ELUs. This finding has a cross-cutting aspect in the area of problem identification and resolution, because the licensee did not take adequate corrective action in a timely manner to address an adverse trend in ELU functionality (P.1.d) |
| Site: | Surry  |
|---|---|
| Report | IR 05000280/2009004 Section 4OA2 |
| Date counted | Sep 30, 2009 (2009Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | C Welch D Arnett G Mccoy J Nadel |
| CCA | P.3, Resolution |
| INPO aspect | PI.3 |
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Finding - Surry - IR 05000280/2009004 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Surry) @ 2009Q3
Self-Identified List (Surry)
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