ENS 50154: Difference between revisions
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| event date = 05/30/2014 10:43 CDT | | event date = 05/30/2014 10:43 CDT | ||
| last update date = 05/30/2014 | | last update date = 05/30/2014 | ||
| title = High Pressure Coolant Injection Pump Received | | title = High Pressure Coolant Injection Pump Received an Invalid Isolation Signal | ||
| event text = At 1043 CDT, during an instrument test, the High Pressure Coolant Injection (HPCI) system isolated due to an invalid signal. The isolation was on the 'A' (inboard) logic, which rendered the HPCI system INOPERABLE. The isolation was received while instrument technicians were installing a relay block during the performance of Surveillance Test Procedure 3.3.6.1-43 'HPCI Steam Line High DP Instrument Channel Functional Test.' | | event text = At 1043 CDT, during an instrument test, the High Pressure Coolant Injection (HPCI) system isolated due to an invalid signal. The isolation was on the 'A' (inboard) logic, which rendered the HPCI system INOPERABLE. The isolation was received while instrument technicians were installing a relay block during the performance of Surveillance Test Procedure 3.3.6.1-43 'HPCI Steam Line High DP Instrument Channel Functional Test.' | ||
Operations Personnel have repressurized HPCI piping, installed the relay cover, and declared HPCI System OPERABLE at 1209 [CDT]. | Operations Personnel have repressurized HPCI piping, installed the relay cover, and declared HPCI System OPERABLE at 1209 [CDT]. | ||
Latest revision as of 20:50, 1 March 2018
| Where | |
|---|---|
Duane Arnold  Iowa (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
| LER: | 05000331/LER-2014-004 Regarding Unplanned Inoperability of High Pressure Coolant Injection |
| Time - Person (Reporting Time:+-1 h-0.0417 days <br />-0.00595 weeks <br />-0.00137 months <br />) | |
| Opened: | Terry Brandt 14:43 May 30, 2014 |
| NRC Officer: | Mark Abramovitz |
| Last Updated: | May 30, 2014 |
| 50154 - NRC Website
| |
Duane Arnold with 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |