05000250/FIN-2012011-01
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Finding | |
|---|---|
| Title | Failure to Translate Design Basis Requirements Into Plant Procedures and Calculations for CCW Heat Balance Equation |
| Description | An NRC identified non-cited violation (NCV) of 10 CFR 50, Appendix B, Criterion III, Design Control, was identified for the licensees failure to translate the worse-case total post-accident ICW flow rate for CCW heat exchangers, as documented in calculation PTN-4FSM-04-003 Revision 2, into surveillance, 3/4-OSP-030.4, CCW Heat Exchanger (HX) Performance Test. In addition, the licensee failed to incorporate seasonal salinity variances into calculation PTN-BFJM-96-004, HX3 and HX4 Computer Code Verification. The effects of these two discrepancies was a reduction in maximum allowed canal temperature margin by approximately1.5% or 1.5 degrees Fahrenheit. The licensee entered this issue into their corrective action program (CAP) as Condition Report (CR) 1789995.The failure to maintain the CCW heat balance calculation to ensure the plant could meet their design basis to perform heat removal for normal cool down of the facility, and to mitigate the effects of accident conditions within acceptable limits is a performance deficiency. The inspectors determined that the performance deficiency was more than minor because the calculation errors impacted the Mitigating Systems cornerstone objective to ensure the capability of the CCW system to respond to initiating events to prevent undesirable consequences and affected the cornerstone attribute of Design Control. The inspectors determined that this finding did not have a cross-cutting aspect, because the finding was determined not to be indicative of current licensee performance. |
| Site: | Turkey Point  |
|---|---|
| Report | IR 05000250/2012011 Section 4OA2 |
| Date counted | Sep 30, 2012 (2012Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | G Hopper R Taylor R Reyes M Barillas T Lighty S Mendez-Gonzalez N Coovert |
| INPO aspect | |
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Finding - Turkey Point - IR 05000250/2012011 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Turkey Point) @ 2012Q3
Self-Identified List (Turkey Point)
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