ENS 43285
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ENS Event | |
|---|---|
15:11 Apr 6, 2007 | |
| Title | Main Generator Transformer Explosion - No Impact on Plant Safety Related Systems |
| Event Description | At 1143 on 4/6/07 the licensee declared an Unusual Event due to a main transformer explosion in the protected area. The event was declared in accordance with EAL 8.2.2. Unit 3 automatically tripped due to a load reject at the main generator. The Unit is currently stable at normal operating temperature and pressure. Decay heat is being removed via the steam dumps to the main condenser. All emergency diesel generators are available if needed but safety buses are currently supplied with offsite power.
At the transformer site the deluge system actuated and the fire brigade responded. The fire was out at the time of the report The licensee informed the NRC Resident Inspector.
The offsite local fire department was called by the licensee but their support was not needed and they were released.
The licensee exited Unusual Event at 1247 based on the fact that the fire was confirmed to be extinguished, there was no damage to safety equipment and the plant was in a safe and stable condition.
On April 6 at 1143 hours0.0132 days <br />0.318 hours <br />0.00189 weeks <br />4.349115e-4 months <br />, an unusual event was declared based on Emergency Action Level 8.2.2, an explosion in the 'B' phase of the 31 main transformer. This is a one hour reportable event to the NRC made at 1159 hours0.0134 days <br />0.322 hours <br />0.00192 weeks <br />4.409995e-4 months <br />. This is an update of EN 43285. The NUE was terminated at 1247 hours0.0144 days <br />0.346 hours <br />0.00206 weeks <br />4.744835e-4 months <br />. The State and County were also notified of the unusual event. A press release was made. Although no one was injured as a result of this event, a four hour report is being made since this is related to on-site personnel safety. The main generator tripped and this resulted in a consequential reactor trip. The Reactor Protection System shut down the reactor at 1109 hours0.0128 days <br />0.308 hours <br />0.00183 weeks <br />4.219745e-4 months <br />, a four hour report. The plant operated as designed and the Auxiliary Feedwater System actuated, an eight hour report. The fire was reported to the Control Room at 1111 hours0.0129 days <br />0.309 hours <br />0.00184 weeks <br />4.227355e-4 months <br />. The fire was put out in less than 15 minutes. The event is currently under investigation. The header information in this event was revised as a result of this update to indicate 'Offsite Notification.' |
| Where | |
|---|---|
Indian Point  New York (NRC Region 1) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration 10 CFR 50.72(b)(2)(iv)(B), RPS Actuation 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | |
| Time - Person (Reporting Time:+-3.2 h-0.133 days <br />-0.019 weeks <br />-0.00438 months <br />) | |
| Opened: | Tom Loughran 11:59 Apr 6, 2007 |
| NRC Officer: | John Mackinnon |
| Last Updated: | Apr 6, 2007 |
| 43285 - NRC Website
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Unit 3 | |
|---|---|
| Reactor critical | Critical |
| Scram | A/R |
| Before | Power Operation (93 %) |
| After | Hot Standby (0 %) |
Indian Point with 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(a)(1)(i), Emergency Class Declaration | |
WEEKMONTHYEARENS 568752023-11-29T20:00:00029 November 2023 20:00:00
[Table view]10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification ENS 539542019-03-24T18:45:00024 March 2019 18:45:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Reactor Automatic Trip on Turbine Trip ENS 539372019-03-15T17:00:00015 March 2019 17:00:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Reactor Trip Due to Turbine Generator Trip ENS 536112018-09-18T04:00:00018 September 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 Manual Reactor Trip Due to a Steam Leak on a High Pressure Feedwater Heater ENS 533482018-04-20T01:07:00020 April 2018 01:07:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Trip Due to Turbine Issue ENS 532162018-02-16T07:01:00016 February 2018 07:01:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Trip Due to Loss of Excitation on Main Generator ENS 530522017-11-04T00:22:0004 November 2017 00:22:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Indian Point Unit 3 Reactor Trip on Low Steam Generator Level ENS 528292017-06-26T04:00:00026 June 2017 04:00:00 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 Manual Reactor Trip Due to Loss of Main Feedpump ENS 523532016-11-08T13:51:0008 November 2016 13:51:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Equipment Failure Causing an Explosion in the Protected Area ENS 520672016-07-06T13:38:0006 July 2016 13:38:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Reactor Trip While Performing Testing ENS 518292016-03-29T20:45:00029 March 2016 20:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Baffle Bolt Indications Identified During Inservice Inspection ENS 517242016-02-10T14:16:00010 February 2016 14:16:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Via News Release Concerning Tritium Levels in Groundwater Monitoring Wells ENS 516062015-12-15T00:06:00015 December 2015 00:06:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Reactor Trip Due to Main Generator Lockout ENS 515862015-12-05T22:31:0005 December 2015 22:31:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Trip Initiated Due to Multiple Dropped Control Rods ENS 512112015-07-08T18:25:0008 July 2015 18:25:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Trip Due to Lowering Steam Generator Water Levels ENS 511562015-06-15T23:20:00015 June 2015 23:20:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Reactor Trip Due to Turbine Trip ENS 510602015-05-09T21:50:0009 May 2015 21:50:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Unusual Event Declared Due to Main Transformer Fire ENS 510462015-05-07T11:00:0007 May 2015 11:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Shutdown for an Unisolable Steam Leak ENS 503612014-08-13T15:57:00013 August 2014 15:57:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Reactor Trip ENS 496982014-01-07T02:15:0007 January 2014 02:15:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Reactor Trip on Low Steam Generator Water Level Due to a Failed Main Feedwater Reg Valve ENS 491712013-07-03T11:41:0003 July 2013 11:41:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Reactor Trip Following Loss of Instrument Air to Main Feedwater Regulating Valves ENS 488082013-03-06T13:45:0006 March 2013 13:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Oil Sheen on Hudson River ENS 487502013-02-13T18:55:00013 February 2013 18:55:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Trip on Low Steam Generator Water Level ENS 484542012-10-30T02:41:00030 October 2012 02:41:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Rps Actuation on Generator Trip ENS 479992012-06-06T10:12:0006 June 2012 10:12:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Unit 2 Experienced an Automatic Reactor Trip on Turbine Main Generator Trip ENS 478822012-05-01T16:05:0001 May 2012 16:05:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Faa Notified of Removal of Stack Avaition Obstruction Lights ENS 477152012-03-03T14:58:0003 March 2012 14:58:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Oil Sheen in Hudson River ENS 475822012-01-10T09:36:00010 January 2012 09:36:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Excessive Leakage from Rcp Seal Return ENS 474822011-11-28T21:50:00028 November 2011 21:50:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification of Oil Sheen in Discharge Canal ENS 471022011-07-27T16:29:00027 July 2011 16:29:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification of a Small Oil Spill ENS 467822011-04-25T13:50:00025 April 2011 13:50:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(3)(v)(A), Loss of Safety Function - Shutdown the Reactor Single Train Charging Pump Declared Inoperable ENS 467452011-04-10T12:40:00010 April 2011 12:40:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification of an Oil Sheen in the Discharge Canal ENS 464002010-11-07T23:39:0007 November 2010 23:39:00 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(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Alert Declared Due to Explosion in the 21 Main Transformer ENS 462412010-09-10T01:29:00010 September 2010 01:29:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Trip Due to Service Water Leak in the Main Generator Exciter Housing ENS 462292010-09-03T14:58:0003 September 2010 14:58:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Unit 2 Experienced an Automatic Reactor Trip Due to High Steam Generator Level ENS 459822010-06-07T14:20:0007 June 2010 14:20:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Notification of Fatality ENS 456242010-01-11T20:59:00011 January 2010 20:59:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Trip Due to Main Generator Electrical Trip ENS 455522009-12-09T16:01:0009 December 2009 16:01:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Emergency Sirens Failed to Activate ENS 454742009-11-03T02:41:0003 November 2009 02:41:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Reactor Trip Due to Turbine Trip Caused by a Generator Lock-Out Relay Actuation ENS 453062009-08-27T23:45:00027 August 2009 23:45:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Reactor Trip Due to Turbine Trip ENS 452552009-08-11T00:32:00011 August 2009 00:32:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Indian Point Unit 3 Automatically Tripped During Thunderstorm ENS 450982009-05-28T10:25:00028 May 2009 10:25:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Reactor Trip Resulting from a High Steam Generator Level Turbine Trip ENS 450692009-05-15T05:53:00015 May 2009 05:53:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Trip Due to Failure of the Main Feedwater Regulating Valve ENS 449672009-04-03T15:36:0003 April 2009 15:36:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Trip Due to Loss of 21 Mbfp ENS 447102008-12-10T15:37:00010 December 2008 15:37:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Made Due to Minor Oil Spill ENS 443142008-06-23T18:20:00023 June 2008 18:20:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Minor Oil Spill ENS 441532008-04-21T15:25:00021 April 2008 15:25:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Trip Due to Lowering Steam Generator Water Level ENS 440962008-03-26T15:07:00026 March 2008 15:07:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Minor Oil Spill ENS 440892008-03-24T02:16:00024 March 2008 02:16:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Trip - Loss of Speed on Mbfp ENS 440172008-02-29T15:40:00029 February 2008 15:40:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification of a Small Oil Spill ENS 434742007-07-05T14:01:0005 July 2007 14:01:00 Information Only, 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Inadvertent Activation of Putnam County Siren System ENS 433232007-04-27T19:44:00027 April 2007 19:44:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Inadvertent Siren Actuation ENS 432852007-04-06T15:11:0006 April 2007 15:11:00 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(a)(1)(i), Emergency Class Declaration Main Generator Transformer Explosion - No Impact on Plant Safety Related Systems ENS 432722007-04-03T08:16:0003 April 2007 08:16:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Trip While Performing Boiler Feed Pump Maintenance ENS 431992007-02-28T11:35:00028 February 2007 11:35:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Trip Following Malfunction of Pressure Transmitter ENS 431422007-02-05T12:07:0005 February 2007 12:07:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Low Service Water Intake Level ENS 429932006-11-15T19:00:00015 November 2006 19:00:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Reactor Trip During Electrical Main Generator Troubleshooting ENS 427972006-08-23T14:35:00023 August 2006 14:35:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Scram Due to Mismatch of Primary Power and Secondary Load Indications ENS 427202006-07-21T14:30:00021 July 2006 14:30:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Trip Due to Sparks from Under Main Generator ENS 426872006-07-06T07:52:0006 July 2006 07:52:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Reactor Trip Due to Generator Differential ENS 423782006-03-01T19:35:0001 March 2006 19:35:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Trip as a Result of Dropped Control Rods ENS 417622005-06-10T13:24:00010 June 2005 13:24:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Manual Reactor Trip Due to Service Water Leak in Exciter Cabinet ENS 416732005-05-06T14:32:0006 May 2005 14:32:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Reactor Trip Due to Steam Flow/ Feed Flow Mismatch Signal ENS 414802005-03-10T20:45:00010 March 2005 20:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification to Government Agencies Due to Oil Spill ENS 413852005-02-08T19:30:0008 February 2005 19:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Made Due to an Asbestos Spill ENS 412412004-12-03T20:55:0003 December 2004 20:55:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Press Release Regarding Plant Shutdown to Repair Secondary Steam Pressure Instrument Line ENS 412272004-11-26T18:22:00026 November 2004 18:22:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Rps Actuation Due to Turbine Trip Caused by Loss of Stator Cooling Water ENS 410662004-09-24T15:55:00024 September 2004 15:55:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Trip with No Complications Due to Lowering Steam Generator Water Level ENS 410462004-09-17T03:18:00017 September 2004 03:18:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification to Public Service Commission ENS 410412004-09-15T05:42:00015 September 2004 05:42:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release New York State Notified That Unit 2 Was Taken Offline for Repairs ENS 410032004-09-01T04:05:0001 September 2004 04:05:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Trip Due to Oscillating Steam Generator Water Level ENS 400672003-08-14T20:25:00014 August 2003 20:25:00 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 Unusual Event Declared Due to Loss of Offsite Power Greater than 15 Minutes. ENS 400692003-08-14T20:23:00014 August 2003 20:23:00 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)(2)(i), Tech Spec Required Shutdown Unusual Event Declared Due to Loss of Offsite Power Greater than 15 Minutes. 2023-11-29T20:00:00 | |
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