ENS 47194
ENS Event | |
|---|---|
18:24 Aug 23, 2011 | |
| Title | Notification of an Unusual Event Due to a Seismic Event |
| Event Description | At 1424 [hrs. EDT] on Tuesday, August 23, 2011, an Unusual Event was declared for Unit 1 and Unit 2 based on Emergency Plan criterion N-1, 'Natural of Destructive Phenomena Inside the Protected Area'.
The Unusual Event was declared following detection of ground motion by persons on site with confirmation based on United States Geological Survey information. Plant operation was not impacted by the event. Site structure and system inspections are in progress in accordance with the Abnormal Operating Procedure for earthquake. No damage has been identified. In accordance with Emergency Plan procedures, notifications of Berrien County and State of Michigan were completed. The licensee has notified the NRC Senior Resident Inspector. A follow-up notification will be made after the Unusual Event is terminated. This notification is being made in accordance with 10 CFR 50.72 (a)(1)(i) due to declaration of an emergency class.
A press release has been issued regarding the seismic event. This notification update is being made in accordance with 10 CFR 50.72 (b)(2)(xi) for news release or notification of other government agency. Notifications were made to the following local media: St. Joseph Herald Palladium, South Bend Tribune, Niles Daily Star, WSJM Radio, WNDU TV, WSBT TV, and WSJV TV. Notification was also made to the Platt News Service. The licensee has notified the NRC Resident Inspector.
The Unusual Event due to Seismic Event was terminated at 1723 EDT following an examination of plant systems which revealed no damage due to the seismic event. A press release has been issued regarding the termination of the Unusual Event. This notification update is being made to notify of the Unusual Event termination and also notify of the press release describing the Unusual Event termination in accordance with 10 CFR 50.72 (b)(2)(xi) for news release or notification of other government agency. The licensee has notified the NRC Resident Inspector and state and local authorities. Notified R3DO (Passehl), IRD (Gott), DHS (Flinter), FEMA (Via), USDA (Kraus), and DOE (Bailey). |
| Where | |
|---|---|
Cook  Michigan (NRC Region 3) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | |
| Time - Person (Reporting Time:+-3.85 h-0.16 days <br />-0.0229 weeks <br />-0.00527 months <br />) | |
| Opened: | Scott Schneider 14:33 Aug 23, 2011 |
| NRC Officer: | John Shoemaker |
| Last Updated: | Aug 23, 2011 |
| 47194 - NRC Website | |
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 %) |
Cook with 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration | |
WEEKMONTHYEARENS 556912022-01-06T15:44:0006 January 2022 15:44:00
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