05000336/FIN-2008002-01
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Finding | |
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| Title | Failure to Evaluate a Unit 2 Charging System Non-conforming Condition against the Current Licensing Bases (Section 1R15) |
| Description | Green. The inspectors identified a finding for Dominions failure to evaluate a nonconforming plant condition against the current licensing basis (CLB) as required by Dominion procedure OP-AA-102-1101, Revision 0, Development of Technical Basis to Support Operability Determinations. Specifically, Dominion, in multiple instances, failed to evaluate the impact that a potential common mode charging system failure would have on the Updated Final Safety Analysis Report Chapter 14.6.1, Inadvertent Opening of Power Operated Relief Valves (PORVs), event, the analysis of record for which credited both charging and safety injection availability. Corrective actions for this issue included the initiation of an operations standing order and crew briefings to ensure all crews understood the CLB related to Unit 2 charging and the need to implement the compensatory action for this chapter 14.6.1 event, and a subsequent operability determination (OD) revision to ensure charging was properly evaluated and documented within the OD. This finding is more than minor because, if left uncorrected, the issue would become a more significant safety concern. Specifically, degraded and non-conforming plant conditions must be evaluated against their credited functions in the CLB to ensure the adverse condition is properly evaluated for operability. This finding was determined to be of very low safety significance (Green) because it did not result in a loss of charging system operability or functionality. This finding has a cross-cutting aspect in the area of Problem Identification and Resolution, Corrective Action Program component, because Dominion did not thoroughly evaluate a Unit 2 charging system non-conforming condition against the CLB P.1(c). (Section 1R15 |
| Site: | Millstone  |
|---|---|
| Report | IR 05000336/2008002 Section 1R15 |
| Date counted | Mar 31, 2008 (2008Q1) |
| Type: | Finding: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | L Scholl B Haagensen J Benjamin J Krafty R Powell S Shaffer J Ayala C Sanders |
| CCA | P.2, Evaluation |
| INPO aspect | PI.2 |
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Finding - Millstone - IR 05000336/2008002 | |||||||||||||||||||||||||||||||||
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Finding List (Millstone) @ 2008Q1
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