ENS 52843
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ENS Event | |
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02:58 Jul 10, 2017 | |
Title | Loss of Safety Function - Control Room Envelope Inoperable |
Event Description | At 2158 [CDT] a door to the Control Room Envelope was left unsecure. GGNS [Grand Gulf Nuclear Station] identified that a loss of Safety Function occurred due to a breach in the Control Room Envelope resulting in inoperability of both divisions of Standby Fresh Air and therefore could have prevented fulfillment of its safety function. The Control Room Envelope was inoperable for one minute. This event is being reported under 10CFR 50.72(b)(3)(v)(D), 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.
The licensee notified the NRC Resident Inspector. |
Where | |
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Grand Gulf Mississippi (NRC Region 4) | |
Reporting | |
10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
Time - Person (Reporting Time:+2.73 h0.114 days <br />0.0162 weeks <br />0.00374 months <br />) | |
Opened: | David Burrus 05:42 Jul 10, 2017 |
NRC Officer: | Bethany Cecere |
Last Updated: | Jul 10, 2017 |
52843 - NRC Website
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Unit 1 | |
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Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
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