05000458/FIN-2008004-03
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Finding | |
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Title | Inadequate Risk Assessment for Transformer Yard Maintenance While Shut Down |
Description | The inspectors identified a noncited violation of 10 CFR 50.65(a)(4) involving the licensees failure to assess and manage the increase in risk that may result from proposed maintenance activities. Specifically, while conducting maintenance in the transformer yard during severe weather with high pressure core spray inoperable, the licensee did not assess the affects on the shutdown risk. The licensee entered this issue into their corrective action program as Condition Report CR-RBS-2008-05383. The inspectors determined this finding was more than minor since it was similar to Manual Chapter 0612, Appendix E, Example 7.e, and since it caused the licensees risk model to change from a Green to Yellow risk window. In accordance with NRC Inspection Manual Chapter 0609, Appendix K, Maintenance Risk Assessment and Risk Management, the inspectors requested that a senior reactor analyst evaluate the risk of this condition. The analyst determined that this finding was of very low risk significance because the associated risk deficit was less than 1.0E-6 (Section 1R13). |
Site: | River Bend ![]() |
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Report | IR 05000458/2008004 Section 1R13 |
Date counted | Sep 30, 2008 (2008Q3) |
Type: | NCV: Green |
cornerstone | Mitigating Systems |
Identified by: | NRC identified |
Inspection Procedure: | IP 71111.13 |
Inspectors (proximate) | R Kopriva R Azua G Larkin D Bollock C Norton |
INPO aspect | |
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Finding - River Bend - IR 05000458/2008004 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (River Bend) @ 2008Q3
Self-Identified List (River Bend)
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