05000390/FIN-2011002-02
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Finding | |
|---|---|
| Title | Failure to Ensure Adequacy of AOI-13, Loss of Essential Raw Cooling Water, Revision 0038 |
| Description | The inspectors identified a NCV of Technical Specification 5.7.1, Procedures, for the licensee failure to establish and implement an adequate Abnormal Operating Instruction (AOI) to address flooding in the Auxiliary Building from a pipe break in the Essential Raw Cooling Water System (ERCW). As a result, the inadequate procedure would have resulted in the increased flooding from an ERCW header leak. The licensee entered this issue into the corrective action program as PER 339112. The inspectors determined that the performance deficiency was more than minor, and therefore a finding, because it would have the potential to lead to a more significant safety concern if left uncorrected, in that, use of the inadequate procedure could have resulted in increased flooding from an ERCW pipe break. This finding was evaluated using the significance determination phase 1 screening criteria in accordance with IMC 0609, Attachment 4 and was determined to be of very low safety significance because the finding did not involve the total loss of any safety function, identified by the licensee through a PRA, IPEEE, or similar analysis, that contributes to the external event initiated core damage accident sequences. No cross-cutting aspect was assigned to this finding because it was not determined to be indicative of current licensee performance. |
| Site: | Watts Bar  |
|---|---|
| Report | IR 05000390/2011002 Section 1R06 |
| Date counted | Mar 31, 2011 (2011Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.06 |
| Inspectors (proximate) | R Monk E Guthrie K Miller M Schwieg |
| INPO aspect | |
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Finding - Watts Bar - IR 05000390/2011002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Watts Bar) @ 2011Q1
Self-Identified List (Watts Bar)
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