ENS 41269: Difference between revisions
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| event date = 12/17/2004 11:09 EST | | event date = 12/17/2004 11:09 EST | ||
| last update date = 01/05/2005 | | last update date = 01/05/2005 | ||
| title = Waterleg Pump Discharge Check Valve | | title = Waterleg Pump Discharge Check Valve in Hpcs System Failed to Open | ||
| event text = During the performance of the High Pressure Core Spray system (HPCS) quarterly pump and valve operability test, the waterleg pump discharge low pressure alarm was unable to be cleared. It was determined that the waterleg pump discharge check valve had failed to open to provide keepfill flow. | | event text = During the performance of the High Pressure Core Spray system (HPCS) quarterly pump and valve operability test, the waterleg pump discharge low pressure alarm was unable to be cleared. It was determined that the waterleg pump discharge check valve had failed to open to provide keepfill flow. | ||
The HPCS system had been declared [inoperable at 0818 for a planned surveillance activity. At 1109, the low pressure alarm came in as expected, but was not able to be cleared. Subsequent mechanical agitation of the waterleg pump discharge check valve caused the valve to open and the low pressure condition to clear. | The HPCS system had been declared [inoperable at 0818 for a planned surveillance activity. At 1109, the low pressure alarm came in as expected, but was not able to be cleared. Subsequent mechanical agitation of the waterleg pump discharge check valve caused the valve to open and the low pressure condition to clear. | ||
Latest revision as of 22:22, 1 March 2018
| Where | |
|---|---|
Perry  Ohio (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
| Time - Person (Reporting Time:+0.52 h0.0217 days <br />0.0031 weeks <br />7.12296e-4 months <br />) | |
| Opened: | Steven Benedict 16:40 Dec 17, 2004 |
| NRC Officer: | John Knoke |
| Last Updated: | Jan 5, 2005 |
| 41269 - NRC Website
| |
Perry with 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident, 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material | |