ENS 41139: Difference between revisions
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| event date = 10/19/2004 18:30 CDT | | event date = 10/19/2004 18:30 CDT | ||
| last update date = 10/28/2004 | | last update date = 10/28/2004 | ||
| title = High Pressure Coolant Injection (Hpci) Inoperable Due | | title = High Pressure Coolant Injection (Hpci) Inoperable Due to Controller Signal Converter Trouble. | ||
| event text = On October 19, 2004 at approximately 1830 hours CDT, Unit One was performing QCOS 2300-05, Quarterly HPCI Pump Operability Test. This was being performed to prove operability following maintenance work on various valves and the turning motor gear unit. At this time when the HPCI turbine was rolled, the HPCI Signal Converter Trouble alarm was received. The HPCI Flow Controller demand controlled at approximately 7250 gpm instead of controlling at the desired 5600 gpm. HPCI was determined not to be operable and was shutdown per procedure. Due to the unexpected behavior of the HPCI Flow Controller, at this time it is not certain if the HPCI will meet its safety function. Therefore, we are reporting this event under 10 CFR 50.72 (b)(3)(v). | | event text = On October 19, 2004 at approximately 1830 hours CDT, Unit One was performing QCOS 2300-05, Quarterly HPCI Pump Operability Test. This was being performed to prove operability following maintenance work on various valves and the turning motor gear unit. At this time when the HPCI turbine was rolled, the HPCI Signal Converter Trouble alarm was received. The HPCI Flow Controller demand controlled at approximately 7250 gpm instead of controlling at the desired 5600 gpm. HPCI was determined not to be operable and was shutdown per procedure. Due to the unexpected behavior of the HPCI Flow Controller, at this time it is not certain if the HPCI will meet its safety function. Therefore, we are reporting this event under 10 CFR 50.72 (b)(3)(v). | ||
Licensee entered Tech Spec 3.5.1.(f) 14 day Limiting Condition of Operation (LCO) for HPCI. Reactor Core Isolation Cooling (RICI) is operable. All other Emergency Core Cooling Systems (ECCS) and the Emergency Diesel Generators (EDG) are fully operable if needed. | Licensee entered Tech Spec 3.5.1.(f) 14 day Limiting Condition of Operation (LCO) for HPCI. Reactor Core Isolation Cooling (RICI) is operable. All other Emergency Core Cooling Systems (ECCS) and the Emergency Diesel Generators (EDG) are fully operable if needed. | ||
Latest revision as of 21:22, 1 March 2018
| Where | |
|---|---|
Quad Cities  Illinois (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
| Time - Person (Reporting Time:+0.12 h0.005 days <br />7.142857e-4 weeks <br />1.64376e-4 months <br />) | |
| Opened: | Ken Hill 23:37 Oct 19, 2004 |
| NRC Officer: | John Knoke |
| Last Updated: | Oct 28, 2004 |
| 41139 - NRC Website
| |
Quad Cities with 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | ||
| Oprm Count Setpoint Discrepancy [Table view] | ||