ENS 55002
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ENS Event | |
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01:18 Nov 17, 2020 | |
Title | Both Trains of Main Control Room Ventilation and Air Conditioning Systems Inoperable |
Event Description | At 1918 CST on 11/16/2020, it was discovered both required trains of the Main Control Room Ventilation and Air Conditioning systems were simultaneously inoperable. Due to these inoperabilities, the systems were in a condition that could have prevented the fulfillment of a safety function; therefore, this condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v).
Subsequent post-maintenance testing demonstrated that the Division 1 Main Control Room Ventilation system was available at the time of the event and was restored to operable status at 2036 CST on 11/16/2020. There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified. |
Where | |
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Clinton 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:+2.37 h0.0988 days <br />0.0141 weeks <br />0.00325 months <br />) | |
Opened: | James Forman 03:40 Nov 17, 2020 |
NRC Officer: | Brian Lin |
Last Updated: | Nov 24, 2020 |
55002 - NRC Website | |
Unit 1 | |
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Reactor critical | Critical |
Scram | No |
Before | Power Operation (98 %) |
After | Power Operation (98 %) |
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