ENS 44268
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ENS Event | |
|---|---|
21:30 Jun 4, 2008 | |
| Title | Manual Reactor Trip Following Loss of Main Feedwater Pump |
| Event Description | On 6/4/2008 at 17:30 hrs an unplanned manual reactor trip was initiated on St. Lucie Unit 2 from 100% power due to a trip of the 2B Heater Drain pump leading to a trip of the 2A Main Feedwater Pump and decreasing S/G levels. The Reactor was manually tripped due to decreasing Steam Generator levels.
Following the reactor trip, EOP-1, Standard Post Trip Actions, and EOP-2, Reactor Trip Recovery procedures were completed and Unit 2 was stabilized in Mode 3. All control rods fully inserted. The S/G Safety Valves lifted and the last valve reseated at 950 psig. Feedwater to the S/G was supplied by the 2B Main FW Pumps and then the Auxiliary Feedwater Pumps. Unit 2 electrical requirements are provided from offsite power. All safe shutdown equipment operated as expected. There were no major equipment failures. Unit 1 was not affected by this event. The Grid is stable. The licensee notified the NRC Resident Inspector. |
| Where | |
|---|---|
Saint Lucie  Florida (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(iv)(B), RPS Actuation | |
| Time - Person (Reporting Time:+-0.33 h-0.0138 days <br />-0.00196 weeks <br />-4.52034e-4 months <br />) | |
| Opened: | Calvin Ward 21:10 Jun 4, 2008 |
| NRC Officer: | Bill Huffman |
| Last Updated: | Jun 4, 2008 |
| 44268 - NRC Website | |
Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | Yes, Manual Scram |
| Before | Power Operation (100 %) |
| After | Hot Standby (0 %) |
WEEKMONTHYEARENS 560872022-09-03T02:48:0003 September 2022 02:48:00
[Table view]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 Feed Pump ENS 556412021-12-10T15:24:00010 December 2021 15:24:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Manual Reactor Trip ENS 550782021-01-20T23:22:00020 January 2021 23:22:00 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 Trip of Motor Control Center ENS 542622019-09-07T12:24:0007 September 2019 12:24:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Automatic Reactor Trip ENS 540272019-04-25T13:18:00025 April 2019 13:18:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Automatic Reactor Trip Due to Turbine Generator Trip ENS 537032018-10-29T04:00:00029 October 2018 04:00:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Manual Reactor Trip Due to Inadequate Feedwater Flow ENS 536652018-10-12T04:00:00012 October 2018 04:00:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Automatic Reactor Trip ENS 530362017-10-26T06:12:00026 October 2017 06:12:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Reactor Trip Following a Loss of Load ENS 521912016-08-21T23:37:00021 August 2016 23:37:00 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 - Loss of Offsite Power ENS 513022015-08-10T02:15:00010 August 2015 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 During Testing ENS 506072014-11-12T20:48:00012 November 2014 20:48:00 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 495362013-11-14T17:18:00014 November 2013 17:18:00 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 Low Level in the 2B Steam Generator ENS 495282013-11-12T05:02:00012 November 2013 05:02:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Manual Reactor Trip Due to Unisolable Leak in Digital Electro-Hydraulic System ENS 490822013-05-31T11:12:00031 May 2013 11:12:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Manual Reactor Trip Due to an Anticipated Loss of Condenser Cooling ENS 488182013-03-12T18:51:00012 March 2013 18:51:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Automatic Reactor Trip on Thermal Margin/Low Pressure ENS 479872012-06-02T23:35:0002 June 2012 23:35:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Reactor Trip Due to a Turbine Control System Failure ENS 479152012-05-11T07:55:00011 May 2012 07:55:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Trip Due to Feedwater Control Valve Failure ENS 477932012-03-31T04:22:00031 March 2012 04:22:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Manual Reactor Trip Due to Uncontrolled Cooldown ENS 477522012-03-19T03:36:00019 March 2012 03:36:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Manual Reactor Trip Due to Control Element Assembly Anomalous Behavior ENS 473532011-10-19T09:28:00019 October 2011 09:28:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Manual Reactor Trip on Loss of Condenser Vacuum ENS 471782011-08-22T19:13:00022 August 2011 19:13:00 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 Manual Reactor Trip Due to Rising Condenser Backpressure ENS 469282011-06-06T07:29:0006 June 2011 07:29:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Error During Reactor Protection System Surveillance Leads to Reactor Trip ENS 460182010-06-16T21:10:00016 June 2010 21:10:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Manual Reactor Trip After Two Control Rods Dropped ENS 458432010-04-15T19:39:00015 April 2010 19:39:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Unplanned Manual Reactor Trip ENS 449522009-04-01T22:05:0001 April 2009 22:05:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Unplanned Manual Reactor Trip ENS 442762008-06-07T12:18:0007 June 2008 12:18:00 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 the Trip of a Condensate Pump ENS 442682008-06-04T21:30:0004 June 2008 21:30:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Manual Reactor Trip Following Loss of Main Feedwater Pump ENS 439412008-01-29T10:31:00029 January 2008 10:31:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded Manual Reactor Trip to Repair Rcp "2B1" Seal Package ENS 426472006-06-16T02:23:00016 June 2006 02:23:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Manual Reactor Trip Due to Digital Electro-Hydraulic Leak ENS 422772006-01-20T13:56:00020 January 2006 13:56:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Rps Actuation ENS 419112005-08-11T14:48:00011 August 2005 14:48:00 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 a Condensate Pump Bus Lockout ENS 412972004-12-27T22:20:00027 December 2004 22:20:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Manual Reactor Trip Following Problem with Steam Generator Water Level Control ENS 412932004-12-25T11:52:00025 December 2004 11:52:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Unit 2 Manually Tripped to Remove Failing Condensate Pump from Service ENS 410182004-09-04T05:56:0004 September 2004 05:56:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Manual Reactor Trip Due to Steam Generator Level Oscillations ENS 404032003-12-20T14:49:00020 December 2003 14:49:00 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 Loss of Turbine Generator Excitation ENS 403752003-12-04T21:32:0004 December 2003 21:32:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation St. Lucie Unit 2 Manual Reactor Trip Due to Loss of Condensate Pump 2022-09-03T02:48:00 | |
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