ENS 42481
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ENS Event | |
|---|---|
15:39 Apr 6, 2006 | |
| Title | High Pressure Coolant Injection System Declared Inoperable |
| Event Description | At 10:39 AM on 4/6/06, Unit 2 HPCI was declared inoperable due to circuit breaker 16 failure on the ESS bus. Circuit breaker 16 opened as a result of temporarily shorting the power supply lead while installing a new HPCI temperature recorder. Trouble shooting is in progress as a result of the failure and restoration will follow. Since circuit breaker 16 provides ESS power to HPCI flow controller, HPCI was declared inoperable. This event is reportable under 1OCFR 5.72(b)(3)(v)(D).
The licensee notified the NRC Resident Inspector. |
| Where | |
|---|---|
| Dresden 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:+-0.92 h-0.0383 days <br />-0.00548 weeks <br />-0.00126 months <br />) | |
| Opened: | Dennis Francis 14:44 Apr 6, 2006 |
| NRC Officer: | John Knoke |
| Last Updated: | Apr 6, 2006 |
| 42481 - NRC Website
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Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (97 %) |
| After | Power Operation (97 %) |
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