05000237/FIN-2009005-02
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Finding | |
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| Title | NRC Inspector-Identified Control Room Alarm Isolation Valve Out-of-Position |
| Description | The inspectors identified a finding of very low safety significance and associated NCV of Technical Specification 5.4.1 for the licensee failing to follow Dresden procedure DOP 2-1500-M1, LPCI System Mechanical Checklist, Revision 39. On September 24, 2009, the inspectors identified valve 2-1501-42A, U2 low pressure coolant injection (LPCI) A pump gland leak-off valve, was closed instead of open as required by DOP 2-1500-M1. With this valve closed instead of open, the control room alarm for LPCI pump seal leakage would not have been able to fulfill its function. The issue was entered into the licensees CAP as IR 969490. The licensees corrective actions included changing maintenance procedure DMP 1500-05, LPCI Pump Maintenance, step G.25.d to include the case drain valve equipment numbers and sign offs to position and verify the valves; and Operations Department Management addressed the operations department personnel about this issue. The finding was determined to be more than minor because the finding, if left uncorrected, would become a more significant safety concern. Specifically, the valve isolated an alarm in the control room. The inspectors concluded this finding was associated with the Mitigating Systems Cornerstone using IMC 0609, Significance Determination Process, Attachment 0609.04, Phase 1 - Initial Screening and Characterization of Findings, Table 4a, dated January 10, 2008. This finding has a cross-cutting aspect in the area of Human Performance, Work Practices because the licensee did not have any documentation as to how or when the valve was placed into the position it was in. The design and location of the valve precluded that the valve was accidently placed into the position it was found in. Therefore, the inspectors concluded that either the failure to use human error prevention techniques or maintaining proper documentation of activities caused the mispositioning of valve 2-1501-42A. H.4.(a) |
| Site: | Dresden  |
|---|---|
| Report | IR 05000237/2009005 Section 1R15 |
| Date counted | Dec 31, 2009 (2009Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| 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 |
| CCA | H.12, Avoid Complacency |
| INPO aspect | QA.4 |
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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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