ENS Event | |
|---|---|
18:40 Aug 31, 2021 | |
| Title | Loss of Communications Capability |
| Event Description | At 1340 CDT on August 31, 2021, Waterford 3 Nuclear Generating Station discovered a condition impacting functionality of the ENS and commercial telephone lines. This issue was evaluated and determined to be a major loss of communications capability because the condition affected the ability to directly communicate between the NRC and the Control Room. Satellite phone capability was established at 1410 CDT. Additional communication capability was restored at 1609 CDT. Communication capability via the Emergency Notification System (ENS) was reestablished at 1923 CDT.
This condition does not affect the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified. |
| Where | |
|---|---|
Waterford  Louisiana (NRC Region 4) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+2.2 h0.0917 days <br />0.0131 weeks <br />0.00301 months <br />) | |
| Opened: | John Lewis 20:52 Aug 31, 2021 |
| NRC Officer: | Brian Lin |
| Last Updated: | Aug 31, 2021 |
| 55443 - NRC Website | |
Unit 3 | |
|---|---|
| Reactor critical | Not Critical |
| Scram | No |
| Before | Cold Shutdown (0 %) |
| After | Cold Shutdown (0 %) |
WEEKMONTHYEARENS 554432021-08-31T18:40:00031 August 2021 18:40:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Communications Capability ENS 530572017-11-07T09:37:0007 November 2017 09:37:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Inbound Commercial Lines and Fts Lines to Facility ENS 512952015-08-06T17:00:0006 August 2015 17:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Non-Functional Emergency Sirens ENS 499782014-03-31T20:58:00031 March 2014 20:58:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Six Emergency Sirens ENS 499252014-03-17T12:37:00017 March 2014 12:37:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Sirens ENS 482552012-08-30T11:20:00030 August 2012 11:20:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Operations Facility and Emergency Notification System Phone Out of Service ENS 482512012-08-29T20:30:00029 August 2012 20:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Evacuation Route Unavailable Due to Flooding from Hurricane Isaac ENS 456722010-02-02T20:00:0002 February 2010 20:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Primary Eof Unavailable Due to Failure of Ventilation Damper Position Indication ENS 426722006-06-28T19:15:00028 June 2006 19:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss and Subsequent Restoration of Electrical Power to the Emergency Operations Facility 2021-08-31T18:40:00 | |