05000397/FIN-2012003-04
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Finding | |
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| Title | Licensee-Identified Violation |
| Description | Title 10 CFR, Part 50, Appendix B, Criterion III, Design Control, requires, in part, that measures be established to assure that the design basis for structures, systems, and components are correctly translated into specifications, procedures, and instructions. Contrary to the above, prior to April 10, 2012, the licensee failed to translate the correct flow coefficient for residual heat removal heat exchanger bypass valves RHR-V-48A and RHR-V-48B into Calculation 5.17.19 resulting in a calculated non-conservative pressure drop for the system. This non-conservative pressure drop was then translated into non-conservative acceptance criteria for Procedures OSP-RHR/IST-Q702, RHR Loop A Operability, Revision 0-33 and OSP-RHR/IST-Q703, RHR Loop B Operability Test, Revision 0-33. This finding was entered into the corrective action program as Action Request AR 261930261930 This finding was determined to be of very low safety significance because it represented a design or qualification deficiency confirmed not to result in a loss of operability. |
| Site: | Columbia  |
|---|---|
| Report | IR 05000397/2012003 Section 4OA7 |
| Date counted | Jun 30, 2012 (2012Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | L Carson W Walker W Sifre J Groom M Hayes W Schaup C Alldredge J Dykert |
| INPO aspect | |
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Finding - Columbia - IR 05000397/2012003 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Columbia) @ 2012Q2
Self-Identified List (Columbia)
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