ML25051A225
| ML25051A225 | |
| Person / Time | |
|---|---|
| Site: | Technical Specifications Task Force |
| Issue date: | 04/15/2025 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| References | |
| Download: ML25051A225 (4) | |
Text
Licensee Event Reports: Loss of Offsite Power Events that Resulted in Simultaneous Diesel Generator Starts 1/1/2000 through 8/29/2021 Re: TSTF-599, Revision 1 (ML25093A204)
LER #
STATION UNIT/
DOCKET#
TITLE DG START? EVENT DATEREPORT DATE ADAMS ACCESSION 1
21-002-00 Waterford 3(50-382) Loss of Offsite Power due to Hurricane Ida Y
8/29/2021 10/28/2021 ML21327A021 2
20-001-00 Duane Arnold 1(50-331) Notice of Unusual Event and Unit Trip due to Loss of Offsite Power due to High Winds Y
8/10/2020 9/11/2020 ML20283A373 3
20-003-00 Brunswick 1(50-325),
2(50-324)
Automatic Specified System Actuations due to Loss of Offsite Power Y
8/3/2020 9/21/2020 ML20265A162 4
18-001-00 Byron 2(50-455)
Byron Unit 2 Automatic Safety System Actuation due to System Auxiliary Transformer 242-2 Failure and Subsequent Unit 2 Loss of Offsite Power (LOOP)
Y 7/6/2018 8/29/2018 ML18241A056 5
17-001-00 Arkansas Nuclear One 1(50-313),
2(50-368)
Automatic Start of an Emergency Diesel Generator due to the Loss of Offsite Power due to Severe Weather Y
4/26/2017 6/26/2017 ML17177A314 6
15-009-01 River Bend 1(50-458)
Automatic Reactor Scram due to Partial Loss of Offsite Power Caused by Fault in Local 230kV Switchyard Y
11/27/2015 5/18/2016 ML16155A053 7
16-001-00 Brunswick 1(50-325)
Electrical Bus Fault Results in Lockout of Startup Auxiliary Transformer and Loss of Offsite Power Y
2/7/2016 4/6/2016 ML16104A391 8
14-004-01 Diablo Canyon 1(50-275),
2(50-323)
Actuation of Six Emergency Diesel Generators due to Loss of Offsite Power Y
10/31/2014 3/30/2015 ML15089A597 9
14-006-00 Millstone 2(50-336),
3(50-423)
Millstone Power Station Dual Unit Reactor Trip on Loss of Offsite Power Y
5/25/2014 7/24/2014 ML14211A526 10 13-002-02 LaSalle 1(50-373),
2(50-374)
Unusual Event Declared due to Loss of Offsite Power and Dual Unit Reactor Scram Y
4/17/2013 6/17/2013 ML14022A064 11 13-009-00 Pilgrim 1(50-293) Loss of Offsite Power and Reactor Scram Y
10/14/2013 12/13/2013 ML13364A098 12 13-003-01 Diablo Canyon 1(50-275),
2(50-323)
Actuation of Six Emergency Diesel Generators due to Loss of Offsite Power Y
6/23/2013 10/17/2013 ML13291A124 13 12-002-01 Oyster Creek 1(50-219) Loss of Offsite Power During Hurricane Sandy Y
10/29/2012 6/20/2013 ML13190A465 14 13-002-00 Turkey Point 4(50-251) Reactor Trip Due to Loss of Offsite Power Resulting From Generator Testing Y
4/19/2013 6/18/2013 ML13183A066 15 13-001-00 Point Beach 1(266)
Loss of Offsite Power to Unit 1 Safeguards Buses Y
2/6/2013 4/5/2013 ML13095A183
LER #
STATION UNIT/
DOCKET#
TITLE DG START? EVENT DATEREPORT DATE ADAMS ACCESSION 16 12-001-01 Catawba 1(50-413),
2(50-414)
Unit 1 Automatic Reactor Trip due to Faulted Reactor Coolant Pump Motor Cable Resulted in Zone G Relay Lockout and Subsequent Loss of Offsite Power and Emergency Diesel Generator Automatic Start for Both Units Y
4/4/2012 12/10/2012 ML12348A053 17 11-001-01 Palo Verde 1(50-528),
3(50-530)
Unit 1 and Unit 3 Emergency Diesel Generator Actuation on Loss of Offsite Power to Class 4.16kV Bus Y
2/21/2011 8/3/2012 ML12228A389
18 12-001-01 Wolf Creek 1(50-482)
Failure of 345 kV Switchyard Breaker due to Internal Fault Resulting in Reactor Trip and Coincident Loss of Offsite Power Y
1/13/2012 4/9/2012 ML12109A049 19 11-001-01 Indian Point 2(50-247)
Automatic Actuations of Emergency Diesel Generators due to Undervoltage on 480 VAC Vital Buses 5A and 6A Caused by a Loss of Offsite Power During Switchyard Troubleshooting Y
3/1/2011 2/21/2012 ML12065A018 20 11-001-00 Point Beach 1(266)
Loss of Offsite Power to Unit 1 Safeguards Buses Y
11/27/2011 1/25/2012 ML12031A069 21 11-003-00 North Anna 1(50-338),
2(50-339)
Dual Unit Reactor Trip and ESF Actuations During Seismic Event with a Loss of Offsite Power Y
8/23/2011 10/20/2011 ML11299A018 22 11-001-00 Surry 1(50-280),
2(50-281)
Reactor Trip on Both Units due to Loss of Offsite Power Y
4/16/2011 6/14/2011 ML11178A032 23 09-002-00 Wolf Creek 1(50-482) Loss of Offsite power due to Lightning Y
8/10/2009 10/17/2009 ML093000158 24 09-002-00 Braidwood 2( 50-457)
Unit 2 Loss of Offsite Power Coincident with a Reactor Trip due to Loss of 2C Reactor Coolant Pump Y
7/30/2009 9/28/2009 ML092710198 25 08-001-00 Nine Mile Point 1(50-220) Loss of Offsite Power due to an Equipment Malfunction Y
5/13/2008 7/7/2008 ML081900269 26 08-001-00 Byron 2(50-455)
Unit 2 Emergency Diesel Generators and Auxiliary Feedwater Pump Automatic Start Resulting from a Loss of Offsite Power Due to a Failed Insulator Causing a Differential Phase Overcurrent Y
3/25/2008 3/27/2008 ML081480502
LER #
STATION UNIT/
DOCKET#
TITLE DG START? EVENT DATEREPORT DATE ADAMS ACCESSION 27 06-002-00 Surry 1(50-280),
2(50-281)
Spurious Actuation Results in Unit 2 Trip and Loss of Offsite Power Y
10/7/2006 12/5/2006 ML063460178 28 06-001-00 Catawba 1(50-413),
2(50-414)
Loss of Offsite Power Event Resulted in Reactor Trip of Both Catawba Units from 100%
Power Y
5/20/2006 7/19/2006 ML062080038 29 05-005-00 Turkey Point 4(50-251) Loss of Offsite Power Causes Engineered Safety Feature Actuations Y
10/31/2005 12/22/2005 ML060060031 30 05-004-00 Waterford 3(50-382) Loss of Offsite Power During Hurricane Katrina Y
8/29/2005 10/27/2005 ML053040460 31 04-006-01 Palo Verde 1(50-528),
2(50-529),
3(50-530)
Loss of Offsite Power - Three Unit trip Y
6/14/2004 10/13/2005 ML052980417 32 04-004-00 St. Lucie 1(50-335),
2(50-389)
Dual Unit Loss Of Offsite Power During Hurricance Jeanne Y
9/25/2004 11/24/2004 ML043350403 33 04-003-01 Dresden 3(50-249)
Unit 3 Scram Due to Loss of Offsite Power and Subsequent Inoperability of the Standby Gas Treatment System for Units 2 and 3 Y
5/5/2004 10/29/2004 ML043140263 34 04-002-00 Brunswick 1(50-325) Manual Reactor Shutdown During Loss of Offsite Power Event Y
8/14/2004 10/13/2004 ML042940507 35 03-002-01 Fermi 2(50-341) Automatic Reactor Shutdown Due to Electric Grid Disturbance and Loss of Offsite Power Y
8/14/2003 12/17/2003 ML033570189 36 03-002-00 Grand Gulf 1(50-416) Reactor Scram Due to a Partial Loss of Offsite Power Y
4/24/2003 6/23/2003 ML032790367 37 03-001-00 South Texas 1(50-498),
2(50-499)
Partial Loss of Offsite Power To Unit 1 and Unit 2 Resulting in Engineered Safety Feature Actuations Y
1/19/2003 3/20/2003 ML030840662 38 02-005-00 Watts Bar 1(50-390) Loss of Offsite Power Due to a Fire at the Watts Bar Hydroelectric Generating Plant (WBH)
Y 9/27/2002 11/26/2002 ML023330464 39 02-004-00 Watts Bar 1(50-390) Partial Loss of Offsite Power Y
9/21/2002 11/8/2002 ML023190082 40 02-001-00 San Onofre 3(50-362) Loss of Offsite Power With Consequential RPS/ESF Actuations Due to Maintenance Error Y
2/27/2002 4/24/2002 ML021200004
LER #
STATION UNIT/
DOCKET#
TITLE DG START? EVENT DATEREPORT DATE ADAMS ACCESSION 41 00-004-00 D.C. Cook 2(50-316) Partial Loss of Offsite Power Results in Start of Emergency Diesel Generators Y
6/8/2000 7/7/2000 ML003732158 42 00-004-00 Davis-Besse 1(50-346) Personnel Error During Bus Transfer Testing Results In Loss of Offsite Power Y
4/22/2000 5/20/2000 ML003719442 43 00-001-00 Brunswick 1(50-325) Loss of Offsite Power During Refuel Outage Y
3/3/2000 4/3/2000 ML003701850