05000413/FIN-2012007-01
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Finding | |
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| Title | Failure to Develop Adequate Test to Ensure Minimum SMP Flow Requirements |
| Description | The team identified a non-cited violation of Catawba Nuclear Station Units 1 and 2 License Condition 2.C.5, Fire Protection Program, for the licensees failure to establish a leakage acceptance criteria past check valves that supported minimum, post-fire safe shutdown (SSD) design flow requirements of the standby shutdown system. The licensee entered the issue into the corrective action program as PIP C-12-7717 and conservatively limited the allowed Total Accumulative RCS [reactor coolant system] Leakage to gain additional standby makeup pump (SMP) flow margin. The licensees use of inadequate test acceptance criteria for back-leakage through check valves was a performance deficiency. The performance deficiency was more than minor because it was associated with the Mitigating Systems cornerstone attribute in that, if backleakage through check valves 1(2)NV-46, 1(2)NV-57, 1(2)NV-68, and 1(2)NV-79 was to degrade to the allowed limits in the test procedure, the SMP would not be capable of meeting the 26 gpm reactor coolant system makeup requirement to support the standby shutdown system post-fire SSD function. The inspectors evaluated this issue in accordance with Inspection Manual Chapter 0609, Appendix F, Fire Protection Significance Determination Process, and determined the finding to be of very low safety significance (Green). The finding was assigned the category of post-fire SSD and a low degradation rating that reflected the severity of the identified deficiency. There was no cross-cutting aspect associated with this finding because the condition existed since initial issuance of the test procedure and was not reflective of current licensee performance. |
| Site: | Catawba  |
|---|---|
| Report | IR 05000413/2012007 Section 1R21 |
| Date counted | Sep 30, 2012 (2012Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.21 |
| Inspectors (proximate) | C Baron D Jones S Kobylarz R Nease J Montgomery E Stamm A Alen T Su |
| INPO aspect | |
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Finding - Catawba - IR 05000413/2012007 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Catawba) @ 2012Q3
Self-Identified List (Catawba)
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