05000280/FIN-2015008-01
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Finding | |
|---|---|
| Title | Failure to Ensure a Functional Alternate Shutdown System Alignment during Appendix R Fire Events Events |
| Description | The inspectors identified a Green non-cited violation (NCV) of Surrys Operating License, Condition 3.I, Fire Protection, for the licensees failure to ensure a functional alternate safe shutdown flow path during an Appendix R fire. The licensee entered this issue into their corrective action program as condition report (CR) 580928. The licensees failure to ensure a functional alternate shutdown system alignment during an Appendix R fire event was a performance deficiency. The performance deficiency was more than minor because it was associated with the procedure quality attribute of the Mitigating Systems Cornerstone. Specifically, Surry failed to implement appropriate corrective actions to mitigate the spurious closure and subsequent damage of more than one motor operated valve as identified in an engineering evaluation. The failure to re-open credited Appendix R MOV(s) would result in the loss of secondary heat removal and/or RCS make-up capability during Appendix R fire events. The finding was screened in accordance with NRC IMC 0609, Appendix F, Fire Protection Significance Determination Process, and determined to be of low safety significance (Green). A Region II senior risk analyst performed a bounding phase 3 analysis that determined the finding represented an increase in core damage frequency of < 1 E-6 /year. No cross cutting aspect was assigned because the performance deficiency did not occur within the last three years. |
| Site: | Surry  |
|---|---|
| Report | IR 05000280/2015008 Section 1R05 |
| Date counted | Jun 30, 2015 (2015Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.05 |
| Inspectors (proximate) | D Jones D Terry-Ward G Wiseman P Braaten S Shaeffer |
| Violation of: | License Condition - Fire Protection License Condition |
| INPO aspect | |
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Finding - Surry - IR 05000280/2015008 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Surry) @ 2015Q2
Self-Identified List (Surry)
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