ENS 45366
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ENS Event | |
|---|---|
05:30 Sep 20, 2009 | |
| Title | Emergency Sirens Inoperable |
| Event Description | At 0130 the 800 MHZ radio [control] system failed to the 'fail soft' mode rendering all [73] emergency notification sirens inoperable. At 0305 courtesy call notifications were made to the county control centers (Calvert, Dorchester, St. Mary's and MEMA).
The backup system was placed in service and 800 MHZ radio and ENS sirens restored to operable status at 0526 9/20/09." Maintenance work to restore the primary system will occur today. The licensee notified the NRC Resident Inspector. |
| Where | |
|---|---|
Calvert Cliffs  Maryland (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+0.33 h0.0138 days <br />0.00196 weeks <br />4.52034e-4 months <br />) | |
| Opened: | Robert Martin 05:50 Sep 20, 2009 |
| NRC Officer: | Donald Norwood |
| Last Updated: | Sep 20, 2009 |
| 45366 - NRC Website
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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 %) |
Calvert Cliffs with 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
WEEKMONTHYEARENS 563552023-02-06T11:30:0006 February 2023 11:30:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Communications and Assessment Capabilities ENS 539212019-03-09T17:00:0009 March 2019 17:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Sewage Line Backup Causing Wastewater Discharge to Chesapeake Bay ENS 515102015-11-02T14:20:0002 November 2015 14:20:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Radiation Monitoring Equipment Due to Planned Maintenance ENS 506872014-12-17T09:17:00017 December 2014 09:17:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Main Plant Vent Radiation Monitoring Unavailable ENS 505022014-10-01T05:24:0001 October 2014 05:24:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Partial Loss of Communications in Emergency Operations Facility and Joint Information Center ENS 494242013-10-10T09:38:00010 October 2013 09:38:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Single Siren Activation ENS 492622013-08-10T11:11:00010 August 2013 11:11:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Inadvertent Single Emergency Siren Activation ENS 487902013-02-27T20:38:00027 February 2013 20:38:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Maintenance on Unit 2 Plant Process Computer ENS 487202013-02-06T14:00:0006 February 2013 14:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Maintenance on Plant Process Computer ENS 486032012-12-18T19:36:00018 December 2012 19:36:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Partial Loss of Emergency Assessment During Planned Modifications ENS 483682012-10-03T12:00:0003 October 2012 12:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Outage Due to Planned Maintenance ENS 482522012-08-29T23:30:00029 August 2012 23:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Primary Plant Computer Out of Service ENS 482332012-08-26T19:30:00026 August 2012 19:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Inadvertent Emergency Siren Actuation ENS 482312012-08-26T05:10:00026 August 2012 05:10:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Inadvertent Emergency Siren Activation ENS 480872012-07-11T02:25:00011 July 2012 02:25:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Erds Due to Communications Network Module Failure ENS 480732012-07-06T06:32:0006 July 2012 06:32:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Response Data System Out of Service ENS 476992012-02-26T20:46:00026 February 2012 20:46:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Plant Assessment Capabilities Due to an Out of Service Plant Process Computer ENS 476842012-02-22T18:45:00022 February 2012 18:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Electrical Distribution System Maintenance to Impact Emergency Response Facilities ENS 476322012-02-03T13:22:0003 February 2012 13:22:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness ENS 472922011-09-26T18:00:00026 September 2011 18:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness 800 Mhz Radio System Temporarily Removed from Service Due to Degraded Antenna ENS 472532011-09-09T04:00:0009 September 2011 04:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Leaking a Small Quantity of Diesel Fuel Oil ENS 472072011-08-27T23:15:00027 August 2011 23:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Sirens Out-Of-Service ENS 465162010-12-29T13:15:00029 December 2010 13:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Scheduled Microwave Radio Maintenance Impact to the Ccnpp Control Room and Emergency Operations Facility ENS 464852010-12-16T13:00:00016 December 2010 13:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Maintenance to Microwave Radio System Affecting Eof, State and County Facilities ENS 462922010-09-30T10:50:00030 September 2010 10:50:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification - Inadvertent Alarm Actuation ENS 461082010-07-19T14:30:00019 July 2010 14:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Response Data System Discovered to Be Out of Service ENS 460682010-07-04T15:30:0004 July 2010 15:30:00 Other Unspec Reqmnt, 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Telephone Communications Outage ENS 460242010-06-17T18:00:00017 June 2010 18:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Grass Fire Outside Protected Area ENS 457052010-02-16T05:00:00016 February 2010 05:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Scheduled Microwave Radio Upgrades Impact to the Control Room and Emergency Operations Facility ENS 453662009-09-20T05:30:00020 September 2009 05:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Sirens Inoperable ENS 450812009-05-19T19:00:00019 May 2009 19:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Response Data System (Erds) Computer Harddrive Out of Service ENS 448862009-03-02T16:35:0002 March 2009 16:35:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Weather Related Loss of Automatic Notification System Sirens ENS 448562009-02-17T15:00:00017 February 2009 15:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Safety Parameter Display System Due to Planned Maintenance ENS 442772008-06-08T16:30:0008 June 2008 16:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification of Hydrazine Release ENS 433842007-05-24T15:00:00024 May 2007 15:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Operations Facility Out of Service for Planned Maintenance ENS 433352007-05-01T21:00:0001 May 2007 21:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification of a Spill of Acidic Water ENS 429532006-11-01T14:08:0001 November 2006 14:08:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Potential Degradation in the Offsite Emergency Siren Notification System ENS 429232006-10-21T11:35:00021 October 2006 11:35:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Notification to State of Chemical and Sewage Release ENS 428272006-09-05T20:00:0005 September 2006 20:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Related to Jellyfish Influx ENS 427042006-07-13T22:26:00013 July 2006 22:26:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Related to Jellyfish Influx ENS 427022006-07-12T20:06:00012 July 2006 20:06:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Related to Jellyfish Influx ENS 426992006-07-06T20:35:0006 July 2006 20:35:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Required by Npdes to State of Maryland Due to Significant Jellyfish Influx ENS 418752005-07-27T19:00:00027 July 2005 19:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Improperly Labeled Radioactive Material Shipment ENS 418452005-07-15T14:30:00015 July 2005 14:30:00 Other Unspec Reqmnt, 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Environmental Event - Unusual Fish Kill ENS 413502005-01-23T17:00:00023 January 2005 17:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Notification Siren Capability Due to Loss of Power ENS 410512004-09-17T15:15:00017 September 2004 15:15:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification - Coliform Bacteria Found in Drinking Water ENS 406622004-04-09T20:30:0009 April 2004 20:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Power to Eof ENS 403162003-11-12T23:15:00012 November 2003 23:15:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification of Emergency Siren Activation ENS 401752003-09-19T01:05:00019 September 2003 01:05:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Siren Capability Due to Adverse Weather Conditions ENS 397092003-03-28T05:45:00028 March 2003 05:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release 2023-02-06T11:30:00 | |
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