ENS 52221
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ENS Event | |
|---|---|
12:10 Sep 3, 2016 | |
| Title | Unusual Event Declared Due to Seismic Event Alarm |
| Event Description | At 0710 CDT, Cooper Nuclear Station declared a Notification of Unusual Event under EAL HU1.1 due to the station seismic event alarm registering a response to an earthquake (epicenter near Pawnee, OK). The reactor was not affected by the earthquake and remains at 93 percent power. The licensee is performing walkdowns of structures and equipment to verify that the site is unaffected.
Notified the DHS SWO, FEMA Ops Center, DHS NICC, FEMA National Watch Center (E-mail) and Nuclear SSA (E-mail).
At 1547 CDT, Cooper Nuclear Station terminated the Notice of Unusual Event. All inspections and walkdowns of the plant have been completed. No damage or injuries were reported. The seismic event caused no impact to the plant. The Licensee has notified the NRC Resident Inspector. Notified R1DO (Warnick), NRR EO (Miller), IRDMOC (Stapleton), DHS SWO, FEMA Ops Center, DHS NICC, FEMA National Watch Center (E-mail) and Nuclear SSA (E-mail). |
| Where | |
|---|---|
Cooper  Nebraska (NRC Region 4) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
| Time - Person (Reporting Time:+-3.43 h-0.143 days <br />-0.0204 weeks <br />-0.0047 months <br />) | |
| Opened: | Zach Hyde 08:44 Sep 3, 2016 |
| NRC Officer: | Daniel Mills |
| Last Updated: | Sep 3, 2016 |
| 52221 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (93 %) |
| After | Power Operation (93 %) |
WEEKMONTHYEARENS 539342019-03-15T10:46:00015 March 2019 10:46:00
[Table view]10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration En Revision Imported Date 3/25/2019 ENS 538092018-12-29T06:00:00029 December 2018 06:00:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Notice of Unusual Event Due to Toxic Gas and Fire ENS 530692017-11-14T17:18:00014 November 2017 17:18:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Hydrogen Line Leak ENS 522212016-09-03T12:10:0003 September 2016 12:10:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Seismic Event Alarm ENS 477602012-03-22T15:34:00022 March 2012 15:34:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Notice of Unusual Event - Potentially Hazardous Atmosphere Due to Freon Leak ENS 469692011-06-19T09:02:00019 June 2011 09:02:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Missouri River Flooding ENS 460332010-06-22T07:06:00022 June 2010 07:06:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration River Water Level Above 899 Feet ENS 454282009-10-12T21:03:00012 October 2009 21:03:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Notification of Unusual Event Due to Small Fire Lasting Greater than 10 Minutes ENS 429852006-11-11T11:30:00011 November 2006 11:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to an Electrical Fire Involving Heat Trace ENS 427282006-07-25T20:41:00025 July 2006 20:41:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Fire Alarm ENS 424662006-04-02T19:04:0002 April 2006 19:04:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Adverse Weather Conditions ENS 424312006-03-20T13:56:00020 March 2006 13:56:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Small Fire Inside Protected Area ENS 402542003-10-16T17:30:00016 October 2003 17:30:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event at Cooper Due to Small Fire at a Turbine Bearing 2019-03-15T10:46:00 | |
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