ENS 42857
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ENS Event | |
|---|---|
08:30 Sep 24, 2006 | |
| Title | Emergency Notification System and Commercial Telephone Line Problems |
| Event Description | On 9/24/06 at approximately 0430 EST, the NRC Duty Officer attempted to contact the plant via the ENS (Emergency Notification System) phone for the daily plant status. Communications via the ENS phone had apparently failed, and attempts by NRC to use the commercial lines for Unit 1, Unit 2 and the Shift Manager were also unsuccessful. The plant was notified at approximately 0650 by the TVA ODS (Operations Duty Specialist) that the NRC was apparently unable to communicate with Sequoyah via the ENS phone and commercial lines. Sequoyah staff was able to communicate with the NRC Duty Officer with a commercial line, however, the ENS phone line was not functional at that time. At approximately 0700, the ENS phone was successfully utilized to communicate with the NRC Duty Officer. This event is being reported under 10CFR50,72(b)(3)(xiii), Loss of Emergency Preparedness Capabilities. An investigation will follow to determine the cause and required corrective actions.
The licensee notified the NRC Resident Inspector. |
| Where | |
|---|---|
Sequoyah  Tennessee (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+1.75 h0.0729 days <br />0.0104 weeks <br />0.0024 months <br />) | |
| Opened: | Bill Harris 10:15 Sep 24, 2006 |
| NRC Officer: | Pete Snyder |
| Last Updated: | Sep 24, 2006 |
| 42857 - 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 %) |
WEEKMONTHYEARENS 558672022-04-29T03:38:00029 April 2022 03:38:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capability ENS 557422022-02-16T16:28:00016 February 2022 16:28:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Offsite Communication Capability ENS 549772020-11-01T09:56:0001 November 2020 09:56:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Seismic Assessment Instrumentation ENS 543802019-11-12T12:00:00012 November 2019 12:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Operations Facility Out of Service ENS 542762019-09-13T09:27:00013 September 2019 09:27:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness En Revision Imported Date 9/17/2019 ENS 521722016-08-11T14:15:00011 August 2016 14:15:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Control Room Emergency Ventilation System Declared Inoperable ENS 508532015-02-27T18:05:00027 February 2015 18:05:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Notification System and Health Physics Network Telephone Lines Out of Service ENS 467902011-04-27T14:30:00027 April 2011 14:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Sirens Due to Loss of Electric Power ENS 453702009-09-20T22:26:00020 September 2009 22:26:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Major Loss of Communications Due to Lightning Strike ENS 435432007-08-01T16:00:0001 August 2007 16:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness 77 Out of 108 Prompt Notification System Sirens Failed Their Monthly Test ENS 428572006-09-24T08:30:00024 September 2006 08:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Notification System and Commercial Telephone Line Problems 2022-04-29T03:38:00 | |
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