05000456/FIN-2009004-03
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Finding | |
|---|---|
| Title | Failure of the Licensees Staff to Properly Manage On-line Risk Associated with Testing of the 2A Auxiliary Feedwater Pump Slave Relays |
| Description | The inspectors identified a NCV of 10 CFR Part 50.65 (a)(4), due to the licensees failure to properly assess and manage the risk associated with scheduled slave relay testing for the 2A Auxiliary Feedwater (AF) system. Specifically, the licensee declared the system inoperable but available. However, the system at the time could neither automatically respond to an event, nor was an operator dedicated as defined in the NRC endorsed industry guidance, Nuclear Management and Resources Council (NUMARC) 93-01, to manually realign the system to perform its safety-related function for the system to be considered available. Corrective actions for this issue included assigning dedicated operators in accordance with NUMARC 93-01, Section 11. The inspectors did not identify a cross-cutting aspect for this issue. The finding is more than minor because there was elevated plant risk associated with the 2A AF pump being unavailable that would have required the implementation of additional risk management actions (i.e., assigning dedicated operators and/or maintenance personnel in accordance with NUMARC 93-01, Section 11). The inspectors assessed the safety significance of this finding using IMC 0609, Appendix K, Maintenance Risk Assessment and Risk Management Significance Determination Process. Using input from the licensees risk assessment engineer, the inspectors determined that the actual risk deficit was 1.5 x 10-7. The finding was determined to be of very low safety significance because the actual risk deficit was determined to be less than 1 x 10-6. |
| Site: | Braidwood  |
|---|---|
| Report | IR 05000456/2009004 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) | R Ng B Dickson M Mitchell B Palagi R Walton M Perry A Garmoe R Skokowski M Thorpe-Kavanaugh T Hartman J Gall |
| INPO aspect | |
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Finding - Braidwood - IR 05000456/2009004 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Braidwood) @ 2009Q3
Self-Identified List (Braidwood)
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