05000416/FIN-2008002-07
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Finding | |
|---|---|
| Title | Inadequate Design Control of HPCS Minimum Flow Valve MOTOR-OPERATED Valve Over Current Setpoint |
| Description | The inspectors identified a self-revealing noncited violation of 10 CFR Part 50, Appendix B, Criterion III, \"Design Control,\" for failure to properly set the over current trip setpoint for the high pressure core spray minimum flow motor operated valve. This resulted in a spurious over current trip of the valve breaker during a high pressure core spray momentary pump start for breaker operability following post Division 3 emergency core cooling system testing. As a result of the trip, the high pressure core spray minimum flow valve failed open. This issue was entered into the licensees corrective action program as Condition Report CR-GGN-2008-01201. The finding was more than minor because it was associated with the barrier integrity cornerstone to provide reasonable assurance that the physical design barriers protect the public from radionuclide releases caused by accidents or events. Using the MC 0609, \"Significance Determination Process,\" Phase 1 worksheet, the finding was determined to have very low safety significance since it did not result in a loss of the containment barrier. Additionally, the issue was screened and determined to not impact the High Pressure Core Spray mitigating system function (Section 4OA3) |
| Site: | Grand Gulf  |
|---|---|
| Report | IR 05000416/2008002 Section 4OA3 |
| Date counted | Mar 31, 2008 (2008Q1) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71153 |
| Inspectors (proximate) | R Deese P Elkmann R Smith A Barrett D Bollock |
| INPO aspect | |
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Finding - Grand Gulf - IR 05000416/2008002 | |||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Grand Gulf) @ 2008Q1
Self-Identified List (Grand Gulf)
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