ENS 46019
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ENS Event | |
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17:58 Jun 16, 2010 | |
Title | |
Event Description | On 06/16/10 at 1320 CDT, while performing 2-SR-3.3.6.1.6(3), HPCI Time Delay Relay Calibration, HPCI was discovered to be isolated. After review of the Integrated Computer System (ICS), HPCI [steam supply valve] had isolated at 1258 CDT. Cause of isolation is unknown with investigation in progress.
This incident is reportable as an 8-hour ENS notification under 10CFR 50.72 (b)(3)(v) as 'any event or condition that at the time of discovery could have prevented the fulfillment of the safety function of structures or systems that are needed to mitigate the consequences of an accident.' It also requires a 60 day written report. The 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)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
Time - Person (Reporting Time:+3.05 h0.127 days <br />0.0182 weeks <br />0.00418 months <br />) | |
Opened: | Ray Swafford 21:01 Jun 16, 2010 |
NRC Officer: | Bill Huffman |
Last Updated: | Jun 16, 2010 |
46019 - NRC Website
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Unit 2 | |
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Reactor critical | Critical |
Scram | No |
Before | Power Operation (89 %) |
After | Power Operation (89 %) |
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