05000237/FIN-2009005-11
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Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | Title 10 of the Code of Federal Regulations, Part 50, Appendix B, Criterion XVI, Corrective Action, states, in part, Measures shall be established to assure that conditions adverse to quality, such as failures, malfunctions, deficiencies, deviations, defective material and equipment, and non-conformances are promptly identified and corrected. In the case of significant conditions adverse to quality, the measures shall assure that the cause of the condition is determined and corrective action taken to preclude repetition. A significant condition adverse to quality for both Unit 2 and Unit 3 containment cooling service water (CCSW) systems was identified by the licensee in RCR 776598-08, Dresden 3-1503-B, 3B Low Pressure Coolant Injection (LPCI) / Containment Cooling Heat Exchanger (HX) Failure to Meet Design Basis Heat Removal Capability Due to Inadequate Programmatic Control of Macrofoulants, Revision 1, on January 9, 2009. Procedure LS-AA-125, Corrective Action Program (CAP) Procedure, revision 13, defines significant condition adverse to quality (SCAQ), in part, as A condition which, if left uncorrected, could have a serious effect on safety or reliability. In addition, recurring deficiencies or errors that cannot be dispositioned or brought into conformance by established corrective action systems, are considered SCAQs. The inspectors determined that the conditions described in RCR 776598-08, met the licensees definition of a significant condition adverse to quality. Contrary to the above requirements, from January through September 2009, the licensee failed to take measures to assure that the cause of the condition (blockage of the LPCI heat exchangers) was determined and corrective action taken to preclude the repetition for a significant condition adverse to quality on both Unit 2 and Unit 3 CCSW systems. Specifically, the licensee failed to prevent the recurrence of Asiatic clam blockage in the 2A LPCI Hx tubes which resulted in the degraded thermal performance of the Hx. Licensee planned corrective actions included installation of a temporary modification to provide temporary keepfill that was expected to provide better chemical treatment of the CCSW piping upstream of the LPCI Hxs, and a permanent injection skid for biocide to provide for long term assurance of effective chemical treatment. This violation was determined to be of very low safety significance because even though the 2A LPCI Hx was degraded it was able to perform the required design safety function |
| Site: | Dresden  |
|---|---|
| Report | IR 05000237/2009005 Section 4OA7 |
| Date counted | Dec 31, 2009 (2009Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | R Jickling C Moore C Phillips D Melendez Colon D Sand F Ramirez J Benjamin J Draper J Mcghee L Kozak M Holmberg M Mitchell M Ring |
| INPO aspect | |
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Finding - Dresden - IR 05000237/2009005 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Dresden) @ 2009Q4
Self-Identified List (Dresden)
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