ENS 47582
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ENS Event | |
|---|---|
09:36 Jan 10, 2012 | |
| Title | Excessive Leakage from Rcp Seal Return |
| Event Description | Plant shutdown from 100% due to increased leakage from 21 RCP [Reactor Coolant Pump] seal return was commenced at 0100 EST. A manual reactor trip was actuated in accordance with plant procedures at 25% power. Auxiliary feedwater pump was placed in service prior to the reactor trip, per plant procedures. Decay heat is being removed via the condenser steam dumps. All offsite power sources are available. All equipment operated as expected.
The licensee has notified the NRC Resident Inspector and other government agencies.
Subsequent review concluded the condition did not meet reporting criteria. A normal plant shutdown was initiated in accordance with plant procedures for a known problem with the 21 RCP # 1 seal whose seal leakoff rate had reached an administrative alarm limit. Shutdown was not required by the Technical Specifications. On January 10, 2012, at 0100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> [EST] a plant shutdown commenced per plant operating procedure 2-POP-2.1. At 0436 hours0.00505 days <br />0.121 hours <br />7.208995e-4 weeks <br />1.65898e-4 months <br />, the reactor was manually tripped in accordance with procedure 2-POP-3.1. This event is not reportable as the reactor trip was part of a normal shutdown for corrective maintenance. The licensee has notified the NRC Resident Inspector. Notified R1DO (Powell). |
| Where | |
|---|---|
Indian Point  New York (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(iv)(B), RPS Actuation | |
| Time - Person (Reporting Time:+-4.78 h-0.199 days <br />-0.0285 weeks <br />-0.00655 months <br />) | |
| Opened: | Russ Long 04:49 Jan 10, 2012 |
| NRC Officer: | John Knoke |
| Last Updated: | Feb 15, 2012 |
| 47582 - NRC Website
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Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | Yes, Manual Scram |
| Before | Power Operation (25 %) |
| After | Hot Standby (0 %) |
WEEKMONTHYEARENS 539542019-03-24T18:45:00024 March 2019 18:45:00
[Table view]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 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 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 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 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 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 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 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 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 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 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 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 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 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 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. 2019-03-24T18:45:00 | |
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