Semantic search
Jump to navigation
Jump to search
| Start date | Site | Title | |
|---|---|---|---|
| 05000333/LER-2008-003 | FitzPatrick | ||
| 05000333/LER-2012-005 | FitzPatrick | Transformer Installation Error Causes Loss of Off-Site Power | |
| 05000333/LER-2012-008 | FitzPatrick | Automatic Reactor Shutdown Caused by a Fault in Main Transformer | |
| 05000336/LER-1994-003, Application for Amend to License DPR-65,incorporating Addl Requirements Into TS Re non-QA Equipment Utilized to Achieve Feedwater Isolation in Response to MSLB Inside Containment, Per Commitment Made in LER 94-003-00 & Listed I | 6 May 1994 | Millstone | Application for Amend to License DPR-65,incorporating Addl Requirements Into TS Re non-QA Equipment Utilized to Achieve Feedwater Isolation in Response to MSLB Inside Containment, Per Commitment Made in LER 94-003-00 & Listed Insp Repts |
| 05000336/LER-2006-002 | 23 February 2006 | Docket Number | Manual Reactor Trip Due To Trip Of Both Feed Pumps Following A Loss Of Instrument Air |
| 05000336/LER-2008-003 | 22 May 2008 | Docket Number | Failed Pilot Wire Causes Reactor Trip |
| 05000336/LER-2008-004 | 24 May 2008 | Millstone Power Station - | Reactor Trip Due to a Loss of Normal Power Event |
| 05000336/LER-2008-005 | Millstone Power Station - | Feedwater Heater Level Oscillation and Manual Reactor Trip | |
| 05000336/LER-2009-001 | 3 July 2009 | Docket Number | Reactor Trip Due to High Pressurizer Pressure |
| 05000338/FIN-2009007-02 | 31 December 2009 23:59:59 | North Anna | Failure to Ensure RSST A LTC Controller Settings were Correctly Implemented |
| 05000338/FIN-2010002-05 | 31 March 2010 23:59:59 | North Anna | Failure to Establish a Procedure for Undervoltage Timers Results in Main Turbine/Reactor Trip |
| 05000338/LER-2003-004 | 11 June 2003 | Document Number | |
| 05000338/LER-2009-003 | 15 November 2009 | . Inoperable Reserve Station Service Transformer Due to Improper Load Tap Changer Setting | |
| 05000338/LER-2009-004 | Document Numbersequential Revmonth Day ' Year Year Month Day Year North Anna Unit 2 05000339Number No. | AUTOMATIC REACTOR TRIP AND ESF ACTUATION DUE TO HUMAN PERFORMANCE ERROR DURING TESTING | |
| 05000338/LER-2011-003 | North Anna Power Station , Units 1 And 2 | Dual Unit Reactor Trip and ESF ActuatiOns During Seismic Event With a Loss of Offsite Power | |
| 05000338/LER-2014-001 | North Anna | 1 OF 3 | |
| 05000338/LER-2016-001 | 23 January 2016 16 March 2016 | North Anna | 1 OF 3 LER 16-001-00 for North Anna, Units 1 and 2, Regarding Emergency Diesel Generators Automatic Start Due to Loss of Power to "C" Reserve Station Service Transformer |
| 05000338/LER-2016-003 | 16 June 2016 | North Anna | 1 OF 3 LER 16-003-00 for North Anna, Unit 1, Regarding Engineered Safety Feature Actuation Due to Loss of Power to "A" Reserve Station Service Transformer |
| 05000339/LER-2007-002 | 7 March 2007 | Document Numbersequentia Revmonth Day Year Year Month Day Year | Virginia Electric and Power Company North Anna Power Station P. 0. Box 402 Mineral, Virginia 23117 June 29, 2007 U. S. Nuclear Regulatory Commission Serial No.: 07-0280A Attention: Document Control Desk NAPS: JHL Washington, D. C. 20555-0001 Docket No.: 50-339 License No.: NPF-7 Dear Sirs: Pursuant to 10CFR50.73, Virginia Electric and Power Company hereby submits the following Licensee Event Report applicable to North Anna Power Station Unit 2. Report No. 50-339/2007-002-01 This report has been reviewed by the Station Nuclear Safety and Operating Committee and will be forwarded to the Management Safety Review Committee for its review. Sincerely, D. G. Stoddard, Site Vice President North Anna Power Station Enclosure Commitments contained in this letter: None cc: United States Nuclear Regulatory Commission Region II Sam Nunn Atlanta Federal Center 61 Forsyth Street, SW, Suite 23T85 Atlanta, Georgia 30303-8931 Mr. J. T. Reece NRC Senior Resident Inspector North Anna Power Station NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSIOP APPROVED BY OMB NO. 3150-0104 EXPIRES: 6/30/2007 (6-2004) Estimated burden per response to comply with this mandatory collection request: 50 hours. Reported lessons learned are incorporated into the licensing processcaorgsfedar3dacMovinpvsatr4SgnedIvccoem rriEsieranntselreMinR5b2irdeortitrzactreator Regulatory Commission, Washington, DC 20555-0001, or by internet e-mail toLICENSEE EVENT REPORT (LER) infocollects@nrc.gov, and to the Desk Officer, Office of Information and Ri ule a i ngrf8n Ni I 15m 0a 6s im se megg atto flfai SOBiggi2 (f3a 0-e0n 6) iseOcr ofpoManaargeznt and to imposeSee reverse for required number of collection does not display a currently valid OMB control number, the NRC may digits/characters for each block) not conduct or sponsor, and a person is not required to respond to, the information collection. 1. FACILITY NAME 2.'DOCKET NUMBER 3. PAGE NORTH ANNA POWER STATION , UNIT 2 05000 339 1 OF 4 4. TITLE Automatic Start of 2H EDG on Loss of "B" Reserve Station Service Transformer Due To Cable Fault |
| 05000339/LER-2009-001 | 28 April 2009 | Document Numbersequential Revmonth Day Year Year Month Day Year | Virginia Electric and Power Company Estimated burden per response to comply with this mandatory collection |
| 05000339/LER-2010-002 | North Anna | ||
| 05000339/LER-2011-001 | 28 September 2011 | North Anna | Inoperable Emergency Diesel Generator Due to Coolant Leak |
| 05000423/FIN-2014005-02 | 31 December 2014 23:59:59 | Millstone | Failure to Manage Risk of RSST Testing |
| 05000423/LER-2007-002 | 25 April 2007 | Docket Number | Loss of Offsite Power Caused by Transmission System Operator While Defueled |
| 05000458/LER-2015-002 | 7 March 2015 | River Bend | Emergency Diesel Generator Start Circuit Actuation Due to Loss of Power from Reserve Station Service No. 2 |
| 05000458/LER-2015-002, Operations Prohibited by Technical Specifications Due to Deficient Local Leak Rate Test Procedures Containing Erroneous Valve Alignments | 18 February 2015 | River Bend | Operations Prohibited by Technical Specifications Due to Deficient Local Leak Rate Test Procedures Containing Erroneous Valve Alignments |
| A05437, Responds to 851212 Request for Addl Info to Confirm That Adverse Impact of Completing Degraded Grid Protection Mods Outweighs Intended Improvements.Description of Probabilistic Assessment Results & Design Analysis Encl | 13 January 1986 | Millstone | Responds to 851212 Request for Addl Info to Confirm That Adverse Impact of Completing Degraded Grid Protection Mods Outweighs Intended Improvements.Description of Probabilistic Assessment Results & Design Analysis Encl |
| A07899, Provides Addl Info Re Undervoltage Detection Mods & Related License Amend Request,Per NRC 890320 Request.Actual Wiring Drawings Represent True Indication of Separation & Redundancy & Design Single Failure Proof | 25 April 1989 | Millstone | Provides Addl Info Re Undervoltage Detection Mods & Related License Amend Request,Per NRC 890320 Request.Actual Wiring Drawings Represent True Indication of Separation & Redundancy & Design Single Failure Proof |
| B10909, Forwards Remaining Responses & Corresponding FSAR Changes to 640 Series Questions Not Forwarded by Util . Responses Will Be Formally Submitted Along W/Amend 5 by 831101 | 27 September 1983 | Millstone | Forwards Remaining Responses & Corresponding FSAR Changes to 640 Series Questions Not Forwarded by Util . Responses Will Be Formally Submitted Along W/Amend 5 by 831101 |
| B11026, Forwards Responses to 840106 Request for Addl Info Re Probabilistic Safety Study.Info Suppls Util 831109 & 840110 Responses.Min Safety Injection Flow Sufficient to Maintain Vessel Mixture Level Core | 6 February 1984 | Millstone | Forwards Responses to 840106 Request for Addl Info Re Probabilistic Safety Study.Info Suppls Util 831109 & 840110 Responses.Min Safety Injection Flow Sufficient to Maintain Vessel Mixture Level Core |
| B11111, Forwards Response to Draft SER Open Items | 19 April 1984 | Millstone | Forwards Response to Draft SER Open Items |
| B11138, Forwards Revised Responses to Draft Instrumentation & Control Sys Branch SER Open Items 1,6 & 21,per NRC 840313 Meeting.Responses to Draft SER Open Items 3,7 & 19 Also Encl.Responses Will Be Incorporated in Future FSAR Amend | 4 May 1984 | Millstone | Forwards Revised Responses to Draft Instrumentation & Control Sys Branch SER Open Items 1,6 & 21,per NRC 840313 Meeting.Responses to Draft SER Open Items 3,7 & 19 Also Encl.Responses Will Be Incorporated in Future FSAR Amend |
| B11185, Forwards Current Status of Procedures & Sys Review Branch Draft SER Open Items & Revised Responses for Open Items PSRB-13,15 & 18 | 15 May 1984 | Millstone | Forwards Current Status of Procedures & Sys Review Branch Draft SER Open Items & Revised Responses for Open Items PSRB-13,15 & 18 |
| B11335, Forwards Procedures Re Degraded Grid Voltage,Including Change 2,Rev 4 to OP2347B, Normal Station Svc Transformer 15G-2S & Change 2,Rev 5 to OP 2347A, Reserve Station Svc Transformer 15G-22S | 4 December 1984 | Millstone | Forwards Procedures Re Degraded Grid Voltage,Including Change 2,Rev 4 to OP2347B, Normal Station Svc Transformer 15G-2S & Change 2,Rev 5 to OP 2347A, Reserve Station Svc Transformer 15G-22S |
| B11497, Forwards Revs to FSAR Sections 8.2 & 8.3 Re Offsite Power Sys & Emergency Switchgear Bus Protection,Respectively, Closing SER (NUREG-1031),Confirmatory Items 44,45,46 & 50 Per J Knox Request | 1 April 1985 | Millstone | Forwards Revs to FSAR Sections 8.2 & 8.3 Re Offsite Power Sys & Emergency Switchgear Bus Protection,Respectively, Closing SER (NUREG-1031),Confirmatory Items 44,45,46 & 50 Per J Knox Request |
| B11633, Forwards Summaries of Projects Evaluated for Public Safety Impacts & Proprietary Millstone Nuclear Power Station Unit 1 Integrated Safety Assessment Program Public Safety Impact Model. Proprietary Rept Withheld (Ref 10CFR2.790) | 7 August 1985 | Millstone | Forwards Summaries of Projects Evaluated for Public Safety Impacts & Proprietary Millstone Nuclear Power Station Unit 1 Integrated Safety Assessment Program Public Safety Impact Model. Proprietary Rept Withheld (Ref 10CFR2.790) |
| B11747, Forwards Review of Integrated Safety Assessment Program Topic 1.25, Degraded Grid Voltage Procedures, Resulting from Review of SEP Topics VIII-1.A & VII-3 Per 850517 Commitment | 9 October 1985 | Millstone | Forwards Review of Integrated Safety Assessment Program Topic 1.25, Degraded Grid Voltage Procedures, Resulting from Review of SEP Topics VIII-1.A & VII-3 Per 850517 Commitment |
| B11930, Discusses Effects of Hurricane Gloria,Including Preparations for Storm & Loss of Offsite Power Events at Millstone Units 1 & 2 on 850927.Advance Notification Associated W/Severe Weather Events Permits Advance Precautionary Actions | 31 December 1985 | Millstone Haddam Neck 05000000 | Discusses Effects of Hurricane Gloria,Including Preparations for Storm & Loss of Offsite Power Events at Millstone Units 1 & 2 on 850927.Advance Notification Associated W/Severe Weather Events Permits Advance Precautionary Actions |
| B12280, Forwards Pages 3-6,3-15,3-18 & 3-25 Omitted from Section 3 & Isap Topics 1.02,1.16.1,2.06 & 2.07 Omitted from App C of 860731 Isap Final Rept | 1 October 1986 | Millstone | Forwards Pages 3-6,3-15,3-18 & 3-25 Omitted from Section 3 & Isap Topics 1.02,1.16.1,2.06 & 2.07 Omitted from App C of 860731 Isap Final Rept |
| B12995, Forwards Revised Isap Rept,Including Update on Isap Topic Reviews,Evaluation of New Topics,Integrated Implementation Schedule,List of Existing Topics & long-term Plan for Resolution of Topic 1.06,per 870804 Comments on NUREG-1184 | 9 November 1988 | Millstone | Forwards Revised Isap Rept,Including Update on Isap Topic Reviews,Evaluation of New Topics,Integrated Implementation Schedule,List of Existing Topics & long-term Plan for Resolution of Topic 1.06,per 870804 Comments on NUREG-1184 |
| B13099, Forwards Rev 2 to Probabilistic Safety Study Update.Advises That Study Update Will Be Integral Part of Util Response to Generic Ltr 88-20.W/three Oversize Figures Encl | 10 February 1989 | Millstone | Forwards Rev 2 to Probabilistic Safety Study Update.Advises That Study Update Will Be Integral Part of Util Response to Generic Ltr 88-20.W/three Oversize Figures Encl |
| B13175, Forwards Update Re Implementation Status of Improvement Actions Discussed in Util 880527 Response to SALP Board 880329 Recommendations & Addl Info Pertinent to SALP Repts 50-245/86-99 & 50-336/86-99 | 15 June 1989 | Millstone | Forwards Update Re Implementation Status of Improvement Actions Discussed in Util 880527 Response to SALP Board 880329 Recommendations & Addl Info Pertinent to SALP Repts 50-245/86-99 & 50-336/86-99 |
| B13180, Responds to NRC Station Blackout Rule Re Plant Capability for Maintaining Core Cooling & Containment Integrity | 17 April 1989 | Millstone | Responds to NRC Station Blackout Rule Re Plant Capability for Maintaining Core Cooling & Containment Integrity |
| B14267, Application for Amend to License DPR-65,revising TS Table 3.3-3, ESFAS Instrumentation, Item 6.b, Refueling Water Storage Tank-Low, as Result of Sump Recirculation Actuation Signal Logic Design Mods Being Implemented | 28 October 1992 | Millstone | Application for Amend to License DPR-65,revising TS Table 3.3-3, ESFAS Instrumentation, Item 6.b, Refueling Water Storage Tank-Low, as Result of Sump Recirculation Actuation Signal Logic Design Mods Being Implemented |
| B15380, Application for Amend to License DPR-65,extending AOT When One Offsite Circuit Inoperable from Current 72 H to Seven Days | 6 October 1995 | Millstone | Application for Amend to License DPR-65,extending AOT When One Offsite Circuit Inoperable from Current 72 H to Seven Days |
| B15403, Forwards Addl Info Re 951006 Proposed Rev to Ts,Extending cycle-specific Ac Sources AOT & Revised Ts,As Identified by NRC in 951012 Telcon | 23 October 1995 | Millstone | Forwards Addl Info Re 951006 Proposed Rev to Ts,Extending cycle-specific Ac Sources AOT & Revised Ts,As Identified by NRC in 951012 Telcon |
| B15776, Forwards Response to RAI Re 24-month Fuel cycle-electrical Power Systems Surveillance Extensions | 23 July 1996 | Millstone | Forwards Response to RAI Re 24-month Fuel cycle-electrical Power Systems Surveillance Extensions |
| B15910, Forwards Response to RAI Re Alternate AC Power Source Requirements | 18 October 1996 | Millstone | Forwards Response to RAI Re Alternate AC Power Source Requirements |
| ENS 42888 | 7 October 2006 22:01:00 | Surry | Manual Scram Due to Unusual Noise in Turbine Building |
| ENS 43217 | 7 March 2007 08:05:00 | North Anna | Emergency Diesel Generator Autostart on Loss of "B" Reserve Station Service Transformer |