05000255/FIN-2010004-01
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Finding | |
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| Title | Failure to Perform an Adequate Risk Assessment for Maintenance Activities |
| Description | The inspectors identified a finding of very low safety significance (Green) and associated NCV of 10 CFR 50.65 a(4) for failing to properly assess and manage the risk associated with the removal of the auxiliary feedwater (AFW) pump room floor plug during emergent maintenance activities. Specifically, the impact of the floor plug was not considered in the risk assessment and licensee personnel were unaware of resources needed to restore configuration. The performance deficiency was identified after the floor plug had been reinstalled. Prior to the next maintenance activity involving floor plugs, the licensee ensured appropriate actions were taken in accordance with their procedures. The issue was entered into the licensees CAP as CR-PLP-2010-03434. The issue was more than minor because it adversely affected the Protection from External Factors attribute of the Mitigating Systems cornerstone, whose objective is to ensure the availability, reliability, and capability of systems that respond to initiating events. Additionally, the inspectors compared the issue to examples in IMC 0612 Appendix E, and concluded it was similar to example 7.e. for more than minor in that the risk assessment was not adequate for a situation where licensee procedures required risk management actions to be taken to address plant configuration. Specifically, the licensee did not perform a risk assessment for removal of the AFW pump room floor plug and did not establish adequate risk management actions to reinstall it in the event of flooding. The finding screened as Green based on an evaluation performed by a Senior Risk Analyst (SRA) using IMC 0609 Appendix M, Significance Determination Process Using Qualitative Criteria, with a bounding risk evaluation which estimated a relatively low increase in risk for the given configuration. The finding had an associated cross-cutting aspect in the area of Human Performance (Resources) in that the licensee failed to provide complete, accurate, and up-to-date procedures that are adequate to ensure nuclear safety. (H.2(c)). |
| Site: | Palisades  |
|---|---|
| Report | IR 05000255/2010004 Section 1R13 |
| Date counted | Sep 30, 2010 (2010Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.13 |
| Inspectors (proximate) | J Cassidy J Ellegood J Giessner T Taylor |
| CCA | H.7, Documentation |
| INPO aspect | WP.3 |
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Finding - Palisades - IR 05000255/2010004 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Palisades) @ 2010Q3
Self-Identified List (Palisades)
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