ENS 53493
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ENS Event | |
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04:00 Jul 7, 2018 | |
Title | Control Room Ventilation Inoperable |
Event Description | At 0242 EDT, the CCNPP (dual unit, single control room) control room supply damper failed shut. This rendered the Unit 1 and Unit 2 control room ventilation inoperable and the appropriate LCOs were entered.
At 0249, control room ventilation was restored to service and the appropriate LCOs were exited. This is being reported under 10 CFR 50.72(b)(3)(v)(D). The licensee notified the NRC Resident Inspector. |
Where | |
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Calvert Cliffs ![]() Maryland (NRC Region 1) | |
Reporting | |
10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
Time - Person (Reporting Time:+4.48 h0.187 days <br />0.0267 weeks <br />0.00614 months <br />) | |
Opened: | Daniel Geneva 08:29 Jul 7, 2018 |
NRC Officer: | Donald Norwood |
Last Updated: | Jul 7, 2018 |
53493 - NRC Website
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Unit 1 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
Unit 2 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
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