05000458/FIN-2010006-04
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Finding | |
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Title | Failure to Implement and Maintain in Effect all Provisions of the Approved Fire Protection Program |
Description | The team identified a noncited violation of License Condition 2.C.(10), Fire Protection, related to the licensee's failure to implement and maintain in effect all provisions of the approved fire protection program. Specifically, during testing required by the approved fire protection program the licensee failed to adequately test the remote shutdown emergency transfer switch functions used to assure isolation of safe shutdown equipment from the control room in the event of a control room evacuation due to fire. The switch functions had not been adequately tested since 1997. The failure to ensure isolation from the control room for safe shutdown equipment controlled from the remote shutdown panel during surveillance testing of emergency transfer switches is a performance deficiency. The finding was more than minor because it was associated with the procedure quality attribute of the Mitigating Systems Cornerstone in that it adversely affected the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. The team evaluated the finding using Inspection Manual Chapter 0609, Appendix F, Fire Protection Significance Determination Process, because it affected fire protection defense-in-depth strategies involving post fire safe shutdown. Using Appendix F, Attachment 2, Degradation Rating Guidance Specific to Various Fire Protection Program Elements, the team determined that the finding constituted a low degradation of the safe shutdown area since the control room isolation feature was expected to display nearly the same level of effectiveness and reliability as it would had the degradation not been present. This finding screened as having very low safety significance (Green). This violation was entered into the licensees corrective action program as CR-RBS-2010-01783. Because the emergency transfer switch surveillance procedures had been in effect since 1997, there was no crosscutting aspect associated with the violation, in that it is not indicative of current licensee performance. |
Site: | River Bend ![]() |
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Report | IR 05000458/2010006 Section 1R05 |
Date counted | Jun 30, 2010 (2010Q2) |
Type: | NCV: Green |
cornerstone | Mitigating Systems |
Identified by: | NRC identified |
Inspection Procedure: | IP 71111.05 |
Inspectors (proximate) | B Correll N O 'Keefe N Okonkwo S Alferin |
INPO aspect | |
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Finding - River Bend - IR 05000458/2010006 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (River Bend) @ 2010Q2
Self-Identified List (River Bend)
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