ENS 52921
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ENS Event | |
|---|---|
08:40 Aug 23, 2017 | |
| Title | Loss of Offsite Telephone Lines |
| Event Description | At approximately 0340 CDT on Wednesday, August 23, 2017, Grand Gulf Nuclear Station was notified by the Entergy System Dispatcher that the NRC had called them and told them that the NRC could not contact Grand Gulf on the Emergency Notification System (ENS) line nor commercial telephone. Control Room personnel immediately tested several offsite lines including the NRC ENS line and found the lines were non-functional.
Offsite prompt Public Warning Sirens were available at all times. State and Local notification capability was available via UHF radio communication. GGN Emergency Response Organization notification capability was available at all times via satellite phone activation of group paging. GGN site Emergency Response Facility intercommunications were available at all times via site internal telephones. In-plant and offsite team communications were available at all times via UHF radio. This event is being reported (8-hour notification) as an event or condition that adversely impacted offsite communications in accordance with 10 CFR 50.72(b)(3)(xiii), specifically the loss of the NRC Emergency Notification System (ENS). The phone company has been contacted and actions are being taken to restore normal communications capability at this time. The NRC Resident Inspector has been notified.
At 1701 EDT on 8/23/17 the phone systems at Grand Gulf have been restored. The licensee will be notifying the NRC Resident Inspector. Notified the R4DO (Farnholtz) |
| Where | |
|---|---|
Grand Gulf  Mississippi (NRC Region 4) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+2.18 h0.0908 days <br />0.013 weeks <br />0.00299 months <br />) | |
| Opened: | Leroy Purdy 10:51 Aug 23, 2017 |
| NRC Officer: | Donald Norwood |
| Last Updated: | Aug 23, 2017 |
| 52921 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (65 %) |
| After | Power Operation (65 %) |
WEEKMONTHYEARENS 529212017-08-23T08:40:00023 August 2017 08:40:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Offsite Telephone Lines ENS 513212015-08-03T14:00:0003 August 2015 14:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Sirens Due to Loss of Power ENS 450362009-05-02T05:02:0002 May 2009 05:02:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Operations Facility Power Interruption ENS 436802007-10-02T03:20:0002 October 2007 03:20:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Exhaust Ventilation Stack Flow and Accident Radiation Monitors Due to Plant Data Multiplexer Failure ENS 436192007-09-06T21:05:0006 September 2007 21:05:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Eof Declared Non-Operational ENS 429402006-10-27T14:15:00027 October 2006 14:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Operations Facility Non Operational Due to Planned Maintenance ENS 420112005-09-25T02:21:00025 September 2005 02:21:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Weather Related Loss of Emergency Sirens ENS 419612005-08-29T22:45:00029 August 2005 22:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Response Data System (Erds) Was Out of Service for Approximately 20 Minutes ENS 419592005-08-29T17:18:00029 August 2005 17:18:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Partial Loss of Emergency Sirens Associated with Hurricane Katrina ENS 408132004-06-14T11:26:00014 June 2004 11:26:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Failed Data Server for Emergency Response Data System ENS 401102003-08-28T12:50:00028 August 2003 12:50:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Power to Emergency Operations Facility 2017-08-23T08:40:00 | |
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