05000327/FIN-2010005-01
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Finding | |
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| Title | Failure to Collect Reactor Coolant Pump Oil Leakage |
| Description | The inspectors identified a Green non-cited violation of 10 CFR 50 Appendix R, Section III.O, Oil collection system for reactor coolant pump, for the licensees failure to ensure the capability of the reactor coolant pump (RCP) oil collection system to collect and drain all RCP oil leakage. System configuration and procedural deficiencies resulted in the inability of the oil collection system to collect and drain all RCP oil leakage. Approximately 2-3 gallons of oil leakage were identified on the containment floor following Unit 1 shutdown for a refueling outage. The licensee entered this issue into their corrective action program as PERs 270216, 278689, and 284244. Corrective actions included revision to applicable plant procedures to prevent the condition from occurring, as well as plans to evaluate a design change to modify the system configuration. The finding was determined to be greater than minor because it was associated with the protection against external factors attribute of the initiating events cornerstone, and affected the cornerstone objective to limit the likelihood of those events that upset plant stability and challenge critical safety function during shutdown as well as power operations. Specifically, the likelihood of a fire in the containment building was elevated due to the failure to maintain combustible material (RCP oil) within the boundaries of the oil collection system. Using IMC 0609 Appendix F, Fire Protection Significance Determination Process, the inspectors assumed that the condition represented a low degradation of the fire protection program element of fire prevention through control of combustible materials. Therefore, the finding was determined to be of very low safety significance (Green). No cross-cutting aspect was identified. The issue was not reflective of current licensee performance, since both the bowl drain line configuration (last modified in 1993) and the seal standpipe filling procedure (in place since at least 2000) had been in place for a number of years |
| Site: | Sequoyah  |
|---|---|
| Report | IR 05000327/2010005 Section 1R05 |
| Date counted | Dec 31, 2010 (2010Q4) |
| Type: | NCV: Green |
| cornerstone | Initiating Events |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.05 |
| Inspectors (proximate) | R Patterson R Williams S Sandal W Deschaine W Loo C Young E Guthrie L Lake L Mahlahla M Riches M Speck P Higgins R Aiello R Baldwin R Hamilton |
| INPO aspect | |
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Finding - Sequoyah - IR 05000327/2010005 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Sequoyah) @ 2010Q4
Self-Identified List (Sequoyah)
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