ENS 55153
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ENS Event | |
|---|---|
01:29 Mar 25, 2021 | |
| Title | Notice of Unusual Event Declared Due to Fire Alarm in Containment |
| Event Description | An Unusual Event was declared at Turkey Point Unit 4 Nuclear Generating Station at 2129 EDT on 03/24/2021 due to a Fire Alarm in Containment. The licensee was not able to validate the alarm within 15 minutes. Following containment entry there was not smoke or fire present.
At 2214 EDT, Turkey Point Unit 4 Nuclear Generating Station terminated the Unusual Event. The cause of the spurious fire alarm is under investigation. The licensee notified the NRC Resident Inspector. Notified IRD MOC (Gott), NRR EO (Felts), R2DO (Miller), DHS SWO, FEMA Operations Center, CISA Central, FEMA NWC (email), DHS Nuclear SSA (email), and FEMA NRCC SASC (email). |
| Where | |
|---|---|
Turkey Point  Florida (NRC Region 2) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
| Time - Person (Reporting Time:+-3.38 h-0.141 days <br />-0.0201 weeks <br />-0.00463 months <br />) | |
| Opened: | Mark Formoso 22:06 Mar 24, 2021 |
| NRC Officer: | Kerby Scales |
| Last Updated: | Mar 24, 2021 |
| 55153 - NRC Website | |
Unit 4 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 562642022-12-08T19:02:0008 December 2022 19:02:00
[Table view]10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Due to Excessive Reactor Coolant System Leakage ENS 551532021-03-25T01:29:00025 March 2021 01:29:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Notice of Unusual Event Declared Due to Fire Alarm in Containment ENS 529522017-09-08T03:14:0008 September 2017 03:14:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Notification of Unusual Event - Hurricane Warning ENS 526212017-03-18T15:19:00018 March 2017 15:19:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Alert Declared for Indications of Fire in Safety Related Switchgear ENS 489482013-04-19T21:20:00019 April 2013 21:20:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Unusual Event Due to Loss of Offsite Power Greater than 15 Minutes ENS 477972012-04-02T23:33:0002 April 2012 23:33:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event - Fire from Hydrogen Supply to Volume Control Tank ENS 421042005-11-01T03:27:0001 November 2005 03:27:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Unusual Event Declaration: Loss of Offsite Power Due to Loss of Startup Transformer ENS 420782005-10-26T01:40:00026 October 2005 01:40:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to a Small Fire at the Main Turbine Area ENS 420672005-10-23T02:54:00023 October 2005 02:54:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Hurricane Wilma ENS 420012005-09-19T15:04:00019 September 2005 15:04:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Hurricane Rita ENS 419432005-08-25T03:04:00025 August 2005 03:04:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Hurricane Warning ENS 418002005-06-27T07:16:00027 June 2005 07:16:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Declaration of an Unusual Event Due Transformer Fire >10 Minutes ENS 417432005-06-03T04:33:0003 June 2005 04:33:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Declared Unusual Event Due to Rcs Leakage in Excess of Technical Specification Limit ENS 410682004-09-24T21:00:00024 September 2004 21:00:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Hurricane Warning ENS 410072004-09-02T14:56:0002 September 2004 14:56:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Notification of Unusual Event Declared 2022-12-08T19:02:00 | |
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