ENS 49198
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ENS Event | |
|---|---|
17:35 Jul 17, 2013 | |
| Title | Planned Testing of Stack Radiation Monitors |
| Event Description | Millstone Unit 2 loss of assessment capability due to pre-planned maintenance of the Millstone Station stack radiation monitor RM-8169 at 1335 EDT on 7/17/13. This event is reportable pursuant to 10 CFR 50.72(b)(3)(xiii) as any event that results in a major loss of emergency assessment capability. During the maintenance, Unit 2 was at 100% power, Mode 1. We informed the State of Connecticut, Waterford dispatch, and the NRC Resident Inspector. |
| Where | |
|---|---|
Millstone  Connecticut (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+-2.5 h-0.104 days <br />-0.0149 weeks <br />-0.00342 months <br />) | |
| Opened: | Todd Perkins 15:05 Jul 17, 2013 |
| NRC Officer: | Daniel Mills |
| Last Updated: | Jul 17, 2013 |
| 49198 - NRC Website
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Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 512642015-07-27T00:25:00027 July 2015 00:25:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Unit 2 Site Stack Radiation Monitor Failure ENS 511612015-06-17T03:43:00017 June 2015 03:43:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Service Water Effluent Radiation Monitor Out of Service ENS 510352015-05-03T01:30:0003 May 2015 01:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Normal and Hi Range Ventilation Process Radiation Monitors Out of Service ENS 508732015-03-09T13:57:0009 March 2015 13:57:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Millstone Unit 2 Site Stack Radiation Monitor Sample Pump Trip ENS 508422015-02-22T02:22:00022 February 2015 02:22:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Reactor Vessel Level Monitoring System Inoperable ENS 508412015-02-22T00:50:00022 February 2015 00:50:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Site Stack Radiation Monitor Failure ENS 507972015-02-09T13:24:0009 February 2015 13:24:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Stack High Range Radiation Monitor Out of Service for Planned Maintenance ENS 507752015-01-28T13:49:00028 January 2015 13:49:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Site Stack Radiation Monitor Failure ENS 507672015-01-26T21:50:00026 January 2015 21:50:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Turbine Building Stack Ventilation Radiation Process Monitors Removed from Service ENS 505682014-10-25T15:30:00025 October 2014 15:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Ventilation Process Radiation Monitors Out of Service for Planned Maintenance ENS 505672014-10-24T23:03:00024 October 2014 23:03:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Normal Range Radiation Monitor Out of Service for Unplanned Maintenance ENS 504832014-09-23T12:19:00023 September 2014 12:19:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Radiation Monitor Out of Service for Planned Maintenance ENS 504442014-09-10T15:06:00010 September 2014 15:06:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Radiation Monitor Out of Service ENS 504322014-09-08T13:17:0008 September 2014 13:17:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Stack Radiation Monitor Out of Service for Planned Maintenance ENS 504062014-08-27T12:39:00027 August 2014 12:39:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Process Radiation Monitors Removed from Service for Planned Maintenance ENS 504002014-08-26T11:59:00026 August 2014 11:59:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Unit 2 High Range Stack Radiation Monitor Taken Out of Service for Pre-Planned Maintenance ENS 503572014-08-12T17:19:00012 August 2014 17:19:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Site Stack Radiation Monitor Out of Service for Planned Maintenance ENS 503432014-08-05T11:47:0005 August 2014 11:47:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Removal of Stack High Radiation Monitor for Maintenance ENS 503292014-07-31T12:25:00031 July 2014 12:25:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness High Range Stack Monitor Taken Out of Service for Planned Maintenance ENS 502812014-07-15T13:40:00015 July 2014 13:40:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Stack High Range Radiation Monitor Out of Service for Planned Maintenance ENS 502412014-06-30T17:10:00030 June 2014 17:10:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Stack High Range Radiation Monitor Out of Service for Planned Maintenance ENS 502112014-06-19T12:03:00019 June 2014 12:03:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Process Radiation Monitor Maintenance ENS 502092014-06-18T12:32:00018 June 2014 12:32:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Maintenance Being Performed on Main Steam Line Radiation Monitors ENS 502062014-06-17T11:49:00017 June 2014 11:49:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Stack Radiation Monitor Taken Out of Service for Planned Maintenance ENS 501682014-06-03T16:59:0003 June 2014 16:59:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness High and Low Range Ventilation Process Radiation Monitor Pre-Planned Maintenance ENS 501652014-06-03T13:33:0003 June 2014 13:33:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness High Range Stack Monitor Taken Out of Service for Planned Maintenance ENS 501422014-05-25T11:02:00025 May 2014 11:02:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(iv)(A), System Actuation, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Unusual Event Due to Loss of Offsite Power ENS 501252014-05-20T12:53:00020 May 2014 12:53:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capability Due to Pre-Planned Maintenance on Stack Radiation Monitor ENS 501062014-05-12T11:31:00012 May 2014 11:31:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Unit 2 Stack High Range Radiation Monitor Removed from Service for Pre-Planned Maintenance ENS 500602014-04-26T02:28:00026 April 2014 02:28:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Stack Radiation Monitor Removed from Service for Planned Maintenance ENS 500452014-04-19T15:00:00019 April 2014 15:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capability Due to Planned Maintenance on Main Steam Line Radiation Monitors ENS 500102014-04-08T13:51:0008 April 2014 13:51:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Stack Gas Effluent Radiation Monitor ENS 499972014-04-04T13:45:0004 April 2014 13:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Stack Radiation Monitor Removed from Service for Pre-Planned Maintenance ENS 499522014-03-24T17:27:00024 March 2014 17:27:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Stack Radiation Monitor Removed from Service for Pre-Planned Maintenance ENS 499512014-03-24T14:43:00024 March 2014 14:43:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Radiation Monitor Out of Service for Pre-Planned Maintenance ENS 499222014-03-17T14:25:00017 March 2014 14:25:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Millstone Station Main Steam Radiation Monitors Out of Service for Maintenance ENS 498932014-03-11T13:31:00011 March 2014 13:31:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Millstone Station Stack Radmonitor Out-Of-Service for Pre-Planned Maintenance ENS 498912014-03-11T11:00:00011 March 2014 11:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Normal Ventilation Process Radiation Monitor Out of Service for Planned Maintenance ENS 498542014-02-25T13:33:00025 February 2014 13:33:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Millstone Station Stack Radmonitor Out-Of-Service for Pre-Planned Maintenance ENS 498372014-02-18T12:28:00018 February 2014 12:28:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Radiation Monitors Will Be Removed from Service for Pre-Planned Maintenance ENS 498232014-02-12T15:47:00012 February 2014 15:47:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness High Range Stack Radiation Monitor Removed from Service for Planned Maintenance ENS 497902014-02-04T13:54:0004 February 2014 13:54:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Stack Radiation Monitor Non-Functional for Pre-Planned Maintenance ENS 497672014-01-27T14:37:00027 January 2014 14:37:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Radiation Monitor Removed from Service for Planned Maintenance ENS 497262014-01-15T15:19:00015 January 2014 15:19:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness High Range Stack Radiation Monitor Removed from Service for Planned Maintenance ENS 497242014-01-15T14:48:00015 January 2014 14:48:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Normal Ventilation Radiation Monitor Removed from Service for Planned Maintenance ENS 497192014-01-13T13:00:00013 January 2014 13:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Radiation Monitor Out of Service for Maintenance ENS 496932014-01-06T13:51:0006 January 2014 13:51:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Radiation Monitor Taken Out of Service for Planned Maintenance ENS 496842013-12-31T16:12:00031 December 2013 16:12:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Stack Radiation Monitor Non-Functional for Pre-Planned Maintenance ENS 496422013-12-17T15:15:00017 December 2013 15:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Stack Radiation Monitor Removed from Service for Preplanned Maintenance ENS 496042013-12-03T15:22:0003 December 2013 15:22:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Stack Radiation Monitor Non-Functional for Pre-Planned Maintenance ENS 495582013-11-19T18:41:00019 November 2013 18:41:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Stack Radiation Monitor Removed from Service for Planned Maintenance ENS 495092013-11-06T15:28:0006 November 2013 15:28:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Stack Radiation Monitors Removed from Service for Preplanned Maintenance ENS 494982013-11-03T11:00:0003 November 2013 11:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Main Steam Line Radiation Monitor Out of Service ENS 494672013-10-23T14:10:00023 October 2013 14:10:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Stack Radiation Monitors Out of Service for Pre-Planned Maintenance ENS 494202013-10-08T18:26:0008 October 2013 18:26:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Stack Radiation Monitor Removed from Service for Planned Maintenance ENS 493842013-09-25T14:06:00025 September 2013 14:06:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Stack Radiation Monitor Removed from Service for Planned Maintenance ENS 493772013-09-23T13:36:00023 September 2013 13:36:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capability Due to Preplanned Maintenance Affecting Radiation Monitors ENS 493492013-09-16T19:00:00016 September 2013 19:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Vent Stack Monitor Maintenance ENS 493132013-08-29T12:44:00029 August 2013 12:44:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capability Due to Radiation Monitor Out of Service for Planned Maintenance ENS 492672013-08-12T17:35:00012 August 2013 17:35:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Accident Assessment Capability Due to Planned Maintenance on the Plant Stack Radiation Monitor ENS 492362013-08-05T14:45:0005 August 2013 14:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness High Range Stack Radiation Monitor Out of Service for Maintenance: ENS 491982013-07-17T17:35:00017 July 2013 17:35:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Testing of Stack Radiation Monitors ENS 491902013-07-15T13:29:00015 July 2013 13:29:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capability Due to Preplanned Maintenance ENS 491832013-07-10T09:13:00010 July 2013 09:13:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capability Due to Failure of a & B Main Steam Line Radiation Monitors ENS 491752013-07-07T00:04:0007 July 2013 00:04:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Unit 1 Spent Fuel Pool Island Radiation Monitor Inoperable ENS 491722013-07-03T13:59:0003 July 2013 13:59:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Stack Radiation Monitor Pre-Planned Maintenance ENS 491302013-06-18T12:20:00018 June 2013 12:20:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Spent Fuel Pool Island Radiation Monitor Removed from Service for Planned Maintenance ENS 491292013-06-18T12:12:00018 June 2013 12:12:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Stack Radiation Monitor Removed from Service for Planned Maintenance ENS 491052013-06-11T14:18:00011 June 2013 14:18:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Radiation Monitor Out-Of-Service for Planned Maintenance ENS 491002013-06-07T17:51:0007 June 2013 17:51:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capability Due to Planned Maintenance ENS 490952013-06-06T14:05:0006 June 2013 14:05:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capability Due to Planned Maintenance ENS 490732013-05-28T14:06:00028 May 2013 14:06:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Radiation Monitors Out of Service for Planned Maintenance ENS 490422013-05-16T13:25:00016 May 2013 13:25:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Stack Radiation Monitor Out of Service for Planned Maintenance ENS 490282013-05-14T13:07:00014 May 2013 13:07:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Radiation Monitor Out of Service for Planned Maintenance ENS 490222013-05-10T16:09:00010 May 2013 16:09:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capability Due to Planned Testing of Radiation Monitors ENS 489932013-05-03T02:07:0003 May 2013 02:07:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Radiation Monitors Taken Out of Service for Pre-Planned Radiography ENS 489842013-04-30T12:40:00030 April 2013 12:40:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Maintenance of Radiation Monitors Used for Eal Classification ENS 489822013-04-30T05:20:00030 April 2013 05:20:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Maintenance of Radiation Monitors Used for Eal Classification ENS 489612013-04-24T00:58:00024 April 2013 00:58:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capabilities from a Radiation Monitor Used for Emergency Classification ENS 489562013-04-23T12:15:00023 April 2013 12:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Stack Radiation Monitor Planned Maintenance ENS 489412013-04-18T15:20:00018 April 2013 15:20:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capability Due to Failure of a Radiation Monitor Bypass Pump ENS 473202011-10-05T12:21:0005 October 2011 12:21:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Paging System Is Out of Service ENS 452482009-08-06T14:00:0006 August 2009 14:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Operations Facility Planned Maintenance 2015-07-27T00:25:00 | |
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