05000280/FIN-2012004-02
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Finding | |
|---|---|
| Title | Failure to Follow Operability Procedure for 1B Charging Pump |
| Description | The inspectors identified a Green noncited violation of 10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, when licensee personnel failed to implement operability procedure, OP-AA-102, Operability Determinations. Specifically, personnel declared the 1B charging pump on Unit 1 operable for a period of approximately 7 days without adequate supporting technical information when the speed increaser (gearbox) was observed with excessive lube oil foaming to the point where sight glass oil level was not visible and could not be determined. The licensee has entered this issue into their CAP as CR 461276. The inspectors determined that the failure to provide adequate technical information to support the immediate operability declarations of the 1B charging pump, as required by operability procedure, OP-AA-102, Operability Determinations , was a performance deficiency. The inspectors reviewed IMC 0612, Appendix B, Issue Screening and determined that the finding was more than minor because it was associated with the Mitigating Systems cornerstone attribute of Equipment Performance and adversely affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Specifically, the foaming condition and the inadequate operability determinations resulted in both a degradation of pump reliability and affected pump availability. The inspectors also noted that this issue was part of a larger programmatic concern associated with the licensees implementation of its operability process and procedure. The inspectors screened this finding in accordance with IMC 0609, Significance Determination Process, Attachment 4, Initial Characterization of Findings, and IMC 0609, Appendix A, SDP for Findings At-Power , and determined the finding was of very low safety significance, Green, since it was a deficiency determined not to have resulted in the loss of operability or functionality of a single train for greater than its TS allowed outage time. The cause of this finding involved the cross-cutting area of human performance, the component of decision making, and the aspect of using conservative assumptions, H.1(b), because the multiple immediate operability determinations concluding that the 1B charging pump was operable were non-conservative in light of the lack of supporting technical information. |
| Site: | Surry  |
|---|---|
| Report | IR 05000280/2012004 Section 4OA5 |
| Date counted | Sep 30, 2012 (2012Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | |
| Inspectors (proximate) | W Loo J Austin J Nadel M Speck S Sanchez G Mccoy R Clagg J Stewart G Kolcum J Sowa D Mills |
| CCA | H.14, Conservative Bias |
| INPO aspect | DM.2 |
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Finding - Surry - IR 05000280/2012004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Surry) @ 2012Q3
Self-Identified List (Surry)
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