ENS 48739
From kanterella
Jump to navigation
Jump to search
ENS Event | |
|---|---|
19:05 Feb 10, 2013 | |
| Title | Loss of Offsite Power and Subsequent Press Release |
| Event Description | On Sunday, February 10, 2013 at 1405 [EST], with the reactor at 0% core thermal power, all control rods fully inserted, and in cold shutdown conditions, the plant experienced a loss of off-site power. With Pilgrim Station aligned to off-site power via the start-up transformer (SUT), a fault on the 'B' phase of the SUT was experienced due to suspected falling ice striking the phase's insulator. This resulted in the tripping of the feeder breaker, ACB-102, and the loss of power to 4160 KV buses A1 through A4. Emergency Diesel Generators (EDGs) 'A' and 'B' auto-started as designed and are powering emergency buses.
The loss of off-site power resulted in de-energization of both Reactor Protection System (RPS) channels resulting in a reactor scram signal and isolation of shutdown cooling. At 1418, shutdown cooling was returned to service. All other plant systems responded as designed. Station personnel are in the process of establishing back-up power in accordance with plant procedures. The following press release was made at 1715 hour0.0198 days <br />0.476 hours <br />0.00284 weeks <br />6.525575e-4 months <br />s: 'Offsite power to Pilgrim station was interrupted this afternoon. The plant is in a cold shutdown condition and Pilgrim's diesel generators are providing power to the site. There is no worker or public safety concern. Plant personnel are troubleshooting the cause of the interruption.' This event had no impact on the health and/or safety of the public. The NRC Senior Resident Inspector has been notified. |
| Where | |
|---|---|
| Pilgrim Massachusetts (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release 10 CFR 50.72(b)(3)(iv)(A), System Actuation 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat | |
| Time - Person (Reporting Time:+1.25 h0.0521 days <br />0.00744 weeks <br />0.00171 months <br />) | |
| Opened: | Richard Probasco 20:20 Feb 10, 2013 |
| NRC Officer: | Bill Huffman |
| Last Updated: | Feb 10, 2013 |
| 48739 - NRC Website
Loading map... {"minzoom":false,"maxzoom":false,"mappingservice":"leaflet","width":"350px","height":"250px","centre":false,"title":"","label":"","icon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"zoom":6,"defzoom":14,"layers":["OpenStreetMap"],"image layers":[],"overlays":[],"resizable":false,"fullscreen":false,"scrollwheelzoom":true,"cluster":false,"clustermaxzoom":20,"clusterzoomonclick":true,"clustermaxradius":80,"clusterspiderfy":true,"geojson":"","clicktarget":"","imageLayers":[],"locations":[{"text":"\u003Cb\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003E\u003Ca class=\"mw-selflink selflink\"\u003EENS 48739\u003C/a\u003E - \u003Ca href=\"/Pilgrim\" title=\"Pilgrim\"\u003EPilgrim\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ELoss of Offsite Power and Subsequent Press Release\n\u003C/p\u003E\u003C/div\u003E","title":"ENS 48739 - Pilgrim\n","link":"","lat":41.942861111111114,"lon":-70.57673055555556,"icon":""}],"imageoverlays":null} | |
Unit 1 | |
|---|---|
| Reactor critical | Not Critical |
| Scram | No |
| Before | Cold Shutdown (0 %) |
| After | Cold Shutdown (0 %) |
Pilgrim with 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat, 10 CFR 50.72(b)(3)(iv)(A), System Actuation | |
WEEKMONTHYEARENS 574192024-11-11T20:10:00011 November 2024 20:10:00
[Table view]10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification ENS 558442022-04-15T14:00:00015 April 2022 14:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Notification of Environmental Report to Another Government Agency ENS 555672021-11-09T15:40:0009 November 2021 15:40:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Violation of Discharge Permit ENS 552022021-04-21T11:52:00021 April 2021 11:52:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification to the Commonwealth of Massachusetts ENS 550712021-01-18T21:00:00018 January 2021 21:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Leak from Underground Sewage Storage Tank ENS 540712019-05-18T03:03:00018 May 2019 03:03:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Scram Due to Degrading Condenser Vacuum ENS 536482018-10-05T04:00:0005 October 2018 04:00:00 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 Low Reactor Water Level ENS 532592018-03-13T14:00:00013 March 2018 14:00:00 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat Off-Site Power Unavailable Due to Winter Storm ENS 531472018-01-04T19:10:0004 January 2018 19:10:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Scram Due to Partial Loss of Offsite Power During Winter Storm ENS 524492016-12-20T23:30:00020 December 2016 23:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification - Release of Hydrogen Gas in Excess of the Reportable Quantity of Ten Pounds ENS 522312016-09-09T21:39:0009 September 2016 21:39:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification - Release of Hydrogen Gas in Excess of the Reportable Quantity of Ten Pounds ENS 522232016-09-06T12:27:0006 September 2016 12:27:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Scram Due to High Reactor Water Level ENS 521812016-08-15T19:52:00015 August 2016 19:52:00 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat, 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident Salt Service Water System Declared Inoperable ENS 513382015-08-22T20:28:00022 August 2015 20:28:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Reactor Scram Due to a Single Msiv Closure ENS 507692015-01-27T09:02:00027 January 2015 09:02:00 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 on Turbine Trip Due to Loss of Offsite Power ENS 503562014-08-12T06:38:00012 August 2014 06:38:00 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat, 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident Hpci Potential Inoperability Discovered During Post Maintenance Testing ENS 501342014-05-23T16:10:00023 May 2014 16:10:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification - Release of Hydrogen Gas in Excess of Reportable Quantity ENS 494542013-10-19T07:31:00019 October 2013 07:31:00 10 CFR 50.72(b)(3)(iv)(A), System Actuation Group 1 Isolation Due to High Reactor Water Level ENS 492962013-08-22T11:55:00022 August 2013 11:55:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation, 10 CFR 50.72(b)(2)(iv)(A), System Actuation - ECCS Discharge Reactor Protection Actuation (Scram) ENS 490532013-05-20T07:53:00020 May 2013 07:53:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Off-Site Notification Due to Fire in Turbine Building ENS 489232013-04-15T02:17:00015 April 2013 02:17:00 10 CFR 50.72(b)(3)(iv)(A), System Actuation Specified System Actuations While Shutting Down ENS 489092013-04-10T17:14:00010 April 2013 17:14:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Massachusetts Agencies Notified Regarding Neutralizing Sump Discharge Line Inspection ENS 487392013-02-10T19:05:00010 February 2013 19:05:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Loss of Offsite Power and Subsequent Press Release ENS 486692013-01-12T14:50:00012 January 2013 14:50:00 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 Potential Security Event ENS 486652013-01-11T11:55:00011 January 2013 11:55:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Regarding Manual Reactor Scram ENS 484392012-10-24T23:20:00024 October 2012 23:20:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Press Release Regarding Status of Ongoing Labor Negotiations ENS 480782012-07-08T20:27:0008 July 2012 20:27:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Commonwealth of Massachusetts Notified That Pilgrim Station Workers Ratify New Contract ENS 480592012-06-29T21:46:00029 June 2012 21:46:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to an Employee Medical Emergency ENS 479972012-06-06T04:45:0006 June 2012 04:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Regarding Labor Negotiations ENS 479682012-05-26T06:00:00026 May 2012 06:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Press Release Regarding Status of Ongoing Labor Negotiations ENS 479272012-05-17T01:00:00017 May 2012 01:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Press Release Regarding Status of Ongoing Labor Negotiations ENS 471992011-08-26T17:45:00026 August 2011 17:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Press Release Related to Hurricane Preparations at the Pilgrim Site ENS 466312011-02-20T15:34:00020 February 2011 15:34:00 10 CFR 50.72(b)(3)(iv)(A), System Actuation Reactor Protection System Actuation While Shutdown ENS 462062010-08-25T12:30:00025 August 2010 12:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification - Release of Hydrogen Gas in Excess of the Reportable Quantity of Ten Pounds ENS 460832010-07-09T04:00:0009 July 2010 04:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Elevated Levels of Tritium Found in a Well Sample ENS 449982009-04-18T05:20:00018 April 2009 05:20:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Courtesy Notification Made to State of Massachusetts Involving an Employee Fatality ENS 447372008-12-20T15:45:00020 December 2008 15:45:00 10 CFR 50.72(b)(3)(iv)(A), System Actuation Momentary Loss of 345Kv Offsite Power ENS 447352008-12-19T23:31:00019 December 2008 23:31:00 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 Load Reject ENS 442172008-05-16T00:00:00016 May 2008 00:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification to State of Massachusetts Regarding Press Release ENS 436422007-09-14T14:50:00014 September 2007 14:50:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification to Epa Required by Npdes Permit ENS 434792007-07-10T23:54:00010 July 2007 23:54:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Main Turbine Trip Causing a Reactor Scram ENS 432452007-03-17T20:58:00017 March 2007 20:58:00 10 CFR 50.72(b)(3)(iv)(A), System Actuation Group Isolations Following Manual Reactor Scram ENS 427502006-08-02T09:45:0002 August 2006 09:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Motor Vehicle Fatality of Plant Employee ENS 424142006-03-13T23:08:00013 March 2006 23:08:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Scram After Offgas System Failure ENS 417992005-06-26T14:55:00026 June 2005 14:55:00 10 CFR 50.72(b)(3)(v)(A), Loss of Safety Function - Shutdown the Reactor, 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat, 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident Emergency Diesel Generators Inoperable Due to High Ambient Temperature 2024-11-11T20:10:00 | |
Retrieved from "https://kanterella.com/w/index.php?title=ENS_48739&oldid=423317"