ENS 45320
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ENS Event | |
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21:09 Sep 1, 2009 | |
Title | |
Event Description | Unit 1 High Pressure Coolant Injection (HPCI) system was declared inoperable after the 250V RMOV BD breaker 11A1 for the ECCS DIV II Inverter tripped. The cause for the breaker trip is currently being investigated.
This event is reportable within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> in accordance with 10CFR 50.72(b)(3)(v) as an event or condition that at the time of discovery could have prevented the fulfillment of a safety function. It also requires a 60 day written report in accordance with 10CFR 50.73(a)(2)(vii). Unit 1 remains at 100% power. NRC Resident Inspector has been notified. |
Where | |
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Browns Ferry ![]() Alabama (NRC Region 2) | |
Reporting | |
10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
Time - Person (Reporting Time:+-0.13 h-0.00542 days <br />-7.738095e-4 weeks <br />-1.78074e-4 months <br />) | |
Opened: | Joe Bennett 21:01 Sep 1, 2009 |
NRC Officer: | Bill Huffman |
Last Updated: | Sep 1, 2009 |
45320 - NRC Website
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Unit 1 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
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