05000269/FIN-2010002-04
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Finding | |
|---|---|
| Title | Failure to Establish a Test Program to Verify SSF Letdown Line Required Flow |
| Description | An NRC-identified apparent violation of 10 CFR 50, Appendix B, Criterion XI, Test Control, was identified for the licensees failure to establish a test program to verify the required design basis flow through the Standby Shutdown Facility (SSF) letdown line. Surveillance test procedure PT/1/A/0400/020 was not adequate to demonstrate that the SSF letdown line could perform its design function during an SSF event. The finding does not represent an immediate safety concern because the in-line filters have been removed from all three units. This violation has been entered into the corrective action program as PIP O-10-7536.The licensees failure to establish a test program that demonstrated that the SSF letdown line could perform its design function was a performance deficiency. The performance deficiency was determined to be more than minor because it was associated with the Mitigating Systems Cornerstone attribute of Equipment Performance and adversely impacted the cornerstone objective in that the licensee did not have testing that demonstrated that the SSF letdown line could perform its design function during an SSF event. It was determined that a Phase III analysis was required because this finding represented a potential loss of function for a single train system which was not addressed by the Phase II pre-solved tables or the plant-specific worksheets. No cross cutting aspect was identified because the most significant contributor to this finding was not indicative of current licensee performance. |
| Site: | Oconee  |
|---|---|
| Report | IR 05000269/2010002 Section 1R22 |
| Date counted | Mar 31, 2010 (2010Q1) |
| Type: | AV: |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.22 |
| Inspectors (proximate) | K Ellis A Sabisch M King G Ottenberg R Chou E Riggsa Sabischk Ellis L Wert W Rogers |
| INPO aspect | |
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Finding - Oconee - IR 05000269/2010002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Oconee) @ 2010Q1
Self-Identified List (Oconee)
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