ENS 51241
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ENS Event | |
|---|---|
13:55 Jul 20, 2015 | |
| Title | Offsite Notification Due to Spurious Actuation of Emergency Siren |
| Event Description | On 7/20/2015 at approximately 0931 CDT, the Monticello nuclear generating plant was notified by Wright County Sheriffs Office of a spurious actuation of one emergency response siren in the city of Monticello that occurred at approximately 0855 CDT (lasted for approximately three minutes). This actuation was confirmed by vendor system monitoring. As a result, this issue is being reported under 10 CFR 50.72(b)(2)(xi) for notifications to other offsite government agencies as the licensee was notified by the Wright County Sheriffs Office. The source of the activation signal has not been determined. The vendor is investigating. The siren is no longer actuating. There was no impact to the health and safety of the public as a result of this event as the offsite response capabilities remain functional with a single siren failure. The site is operating normally with no emergency conditions present. The NRC Resident Inspector has been notified.
The State of Minnesota will be notified. |
| Where | |
|---|---|
Monticello  Minnesota (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | |
| Time - Person (Reporting Time:+-0.3 h-0.0125 days <br />-0.00179 weeks <br />-4.1094e-4 months <br />) | |
| Opened: | Randy Sand 13:37 Jul 20, 2015 |
| NRC Officer: | Donald Norwood |
| Last Updated: | Jul 20, 2015 |
| 51241 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 574122024-11-04T11:00:0004 November 2024 11:00:00
[Table view]10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification - Inadvertent Siren Actuation ENS 570022024-03-01T19:45:0001 March 2024 19:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Inadvertent Siren Activation ENS 565352023-05-22T23:38:00022 May 2023 23:38:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Notification to Another Government Agency ENS 562362022-11-22T21:30:00022 November 2022 21:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Notification of Environmental Report to Another Government Agency ENS 527152017-04-28T21:43:00028 April 2017 21:43:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification for Release of Wastewater ENS 521562016-08-05T15:14:0005 August 2016 15:14:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Drinking Water Exceeding Limits ENS 520202016-06-18T07:59:00018 June 2016 07:59:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Spurious Emergency Siren Activation ENS 515662015-11-24T18:53:00024 November 2015 18:53:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification for a Discharge Canal Temperature Change Causing a Fish Kill ENS 513062015-08-10T20:35:00010 August 2015 20:35:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Inadvertent Activation of a Single Emergency Siren ENS 512412015-07-20T13:55:00020 July 2015 13:55:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Spurious Actuation of Emergency Siren ENS 500522014-04-23T15:00:00023 April 2014 15:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Deceased Migratory Bird Found on Plant Property ENS 500492014-04-22T19:00:00022 April 2014 19:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Deceased Migratory Bird Found on Plant Property ENS 500262014-04-11T02:00:00011 April 2014 02:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to a Dead Duck Found on Site ENS 498762014-03-05T21:00:0005 March 2014 21:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 72.75(b)(2), Offsite Notification Offsite Notification Due to Dry Shielded Canister Test Results ENS 497412014-01-18T09:38:00018 January 2014 09:38:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Discharge Canal Temperature Drop ENS 497142014-01-11T07:00:00011 January 2014 07:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Decreasing Discharge Temperature ENS 491812013-07-08T22:00:0008 July 2013 22:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Sodium Hypochlorite Spill ENS 490102013-05-08T11:23:0008 May 2013 11:23:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Emergency Siren Spurious Actuation ENS 488052013-03-04T15:27:0004 March 2013 15:27:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to a Fish Kill ENS 487542013-02-14T23:10:00014 February 2013 23:10:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Release of Amertap Balls Into the Mississippi River ENS 486812013-01-18T18:40:00018 January 2013 18:40:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Pans System False Activation of 58 Sirens ENS 483432012-09-25T20:00:00025 September 2012 20:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Hydraulic Leak ENS 479482012-05-22T22:13:00022 May 2012 22:13:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Loss of Amertap Balls ENS 477822012-03-28T21:48:00028 March 2012 21:48:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification of Potential Release of Amertap Balls to Mississippi ENS 477252012-03-08T15:54:0008 March 2012 15:54:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Notification of the Minnesota Pollution Control Agency for Release of Amertap Balls ENS 476642012-02-15T14:25:00015 February 2012 14:25:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Inadvertent Manual Siren Activation ENS 474642011-11-21T22:06:00021 November 2011 22:06:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Fish Kill ENS 474602011-11-20T05:12:00020 November 2011 05:12:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Reactor Scram While Performing Turbine Bypass Valve Testing ENS 473642011-10-21T17:50:00021 October 2011 17:50:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Reactor Scram Due to Lockout of Auxiliary Power Transformer ENS 466572011-03-05T16:45:0005 March 2011 16:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Related to Fish Kill ENS 464072010-11-09T17:39:0009 November 2010 17:39:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification - Violation of the Discharge Permit ENS 461132010-07-21T13:16:00021 July 2010 13:16:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Inadvertent Manual Initiation of Emergency Alert Sirens ENS 460232010-06-17T15:45:00017 June 2010 15:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Inadvertent Initiation of Emergency Preparedness Sirens ENS 453382009-09-10T14:13:00010 September 2009 14:13:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release State Offsite Notification Due to Not Meeting Permit Requirements ENS 449072009-03-16T14:00:00016 March 2009 14:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Fish Kill During Routine Shutdown ENS 446332008-11-06T17:15:0006 November 2008 17:15:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification of a Discharge to the Mississippi River ENS 444982008-09-17T15:17:00017 September 2008 15:17:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Unusual Event Due to Loss of Shutdown Cooling ENS 431742007-02-20T14:30:00020 February 2007 14:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite State Notification Required by Npdes Permit ENS 431142007-01-23T19:00:00023 January 2007 19:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Press Release Issued ENS 430952007-01-11T23:30:00011 January 2007 23:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification to State Agencies ENS 405182004-02-13T13:30:00013 February 2004 13:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Loss of Offsite Communications 2024-03-01T19:45:00 | |
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