05000285/FIN-2013009-05
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Finding | |
|---|---|
| Title | Submittal of Leak-Before-Break Analysis |
| Description | Commitment 39 specified, OPPD will complete a plant-specific leak before break (LBB) analysis using the latest LBB criteria. OPPD will submit to the NRC a license amendment request containing the plant-specific LBB evaluation. At the time of this inspection, the licensee did not have a leak-before-break analysis for their existing power level. Report WCAP-17262-NP, Technical Basis for Eliminating Large Primary Loop Pipe Rupture as the Structural Design Basis for Fort Calhoun Unit 1, Revision 0, provided a leak-before-break evaluation at the extended power uprate conditions. During the owner acceptance review of the leak-before-break evaluation at the extended power uprate conditions, the licensee identified that some stress locations on the hot leg and cold leg reactor vessel nozzles at the extended power uprate were lower than those calculated for their current license basis locations. Consequently, the licensee initiated actions to perform the leak-before-break calculation to 60 years at the current operating conditions. The licensee initiated Condition Report 2013-10952 to track completion of the leak-before-break analysis for current power levels. Verification that the licensee submitted their leak-before-break analysis prior to entering the period of extended operation as stated on Commitment 39 is an unresolved item. |
| Site: | Fort Calhoun  |
|---|---|
| Report | IR 05000285/2013009 Section 4OA5 |
| Date counted | Sep 30, 2013 (2013Q3) |
| Type: | URI: |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | |
| Inspectors (proximate) | G Pick J Dixong Meyerg Miller G Pick J Melfi J Rivera Ortiz S Makor |
| INPO aspect | |
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Finding - Fort Calhoun - IR 05000285/2013009 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Fort Calhoun) @ 2013Q3
Self-Identified List (Fort Calhoun)
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