05000482/FIN-2009004-02
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Finding | |
|---|---|
| Title | Inability to Perform Manual Actions for Risk Assessment |
| Description | The inspector identified a noncited violation of 10 CFR 50.65(a)(4) for failure to adequately assess and manage the increase in risk during fuse inspection of component cooling water valves supplying cooling loads inside containment. On March 18, 2009, component cooling water Valves EG HV-16 and EG HV-54 were out of service for fuse inspections to verify wiring for fire protection analyses. The inspectors observed that the evolution was not included in the weekly risk assessment and that operations and maintenance personnel did not have guidance or briefings for restoration of the valves. Review of the risk assessment revealed that the impact of de-energizing the valves in the closed position was neglected and that restoration actions credited by the risk analyst were unknown to the control room and craft workers. The issue was entered into the corrective action program as Condition Report 15318. The failure to adequately assess and manage risk in accordance with AP 22C-003 and the preplanned risk assessment for the use of local actions to ensure component cooling water cooling to loads inside containment was a performance deficiency. The finding is more than minor because the licensee failed to effectively manage prescribed significant compensatory measures for maintenance activities that could increase the likelihood of initiating events. The finding was of very low safety significance because the magnitude of the calculated risk deficit was less than IE-6 even though risk management actions were not in place. The inspectors also determined that the finding has a human performance crosscutting aspect in the area associated with work control because the risk assessment procedure and clearance order procedure assumed local actions could be accomplished but there was no communication regarding this during the work planning stages H.3(b) (Section 1R13) |
| Site: | Wolf Creek  |
|---|---|
| Report | IR 05000482/2009004 Section 1R13 |
| Date counted | Sep 30, 2009 (2009Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.13 |
| Inspectors (proximate) | C Long C Peabody C Ryan G Apger G Miller G Tutak J Adams P Jayroe S Alferinkc Longc Peabody G Miller G Werner M Shannon N O'Keefe P Jayroe R Kellar S Garchow |
| CCA | H.5, Work Management |
| INPO aspect | WP.1 |
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Finding - Wolf Creek - IR 05000482/2009004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Wolf Creek) @ 2009Q3
Self-Identified List (Wolf Creek)
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