Category:Letter
MONTHYEARML25031A0592025-01-31031 January 2025 Annual Commitment Revision Report for the Period 01/01/24 Through 12/31/24 RS-25-001, Subsequent License Renewal Environmental Review, Response to NRC Requests for Confirmation of Information (Rcis) and Request for Additional Information (RAI)2025-01-21021 January 2025 Subsequent License Renewal Environmental Review, Response to NRC Requests for Confirmation of Information (Rcis) and Request for Additional Information (RAI) ML24353A1372025-01-15015 January 2025 Proprietary Determination Constellation Energy Generation, LLC 2024 Deferred Premiums ML25013A0642025-01-13013 January 2025 Requalification Program Inspection ML25010A1502025-01-10010 January 2025 Notification of Commercial Grade Dedication Inspection (05000277/2025011 and 05000278/2025011) and Request for Information IR 05000171/20230012025-01-0707 January 2025 Constellation Energy Generation, LLC, Peach Bottom Atomic Power Station Unit 1 - NRC Inspection Report No. 05000171/2023001 ML25006A0942025-01-0606 January 2025 (Wcgs), Revision of One Form That Implements the Radiological Emergency Response Plan (RERP) ML24324A3312024-12-23023 December 2024 Exemption from the Requirements of 10 CFR Part 50, Sections 50.82(a)(8)(1)(A) and 50.75(h)(1)(iv) (EPID L-2024-LLE-0018) (Ltr) ML24344A2742024-12-19019 December 2024 Alternative Request to Use American Society of Mechanical Engineers Boiler and Pressure Vessel Code Case OMN-32 ML24339B7292024-12-18018 December 2024 Amd - Constellation - Adoption of TSTF-591 ML24317A2472024-12-16016 December 2024 Environmental Assessment and Finding of No Significant Impact Related to Exemption from the Requirements of 10 CFR Part 50 (Letter) ML24344A1102024-12-13013 December 2024 Suppl Env Audit Summary Letter ML24347A0122024-12-12012 December 2024 Revision of One Form That Implements the Radiological Emergency Response Plan (RERP) ML24331A2592024-11-27027 November 2024 Reassignment of the U.S. Nuclear Regulatory Commission Branch Chief in the Division of Operating Reactor Licensing for Plant Licensing Branch III ML24331A2792024-11-26026 November 2024 Supplement to Application to Revise Technical Specifications to Adopt TSTF-591-A, Revise Risk Informed Completion Time (RICT) Program Revision 0 and Revise 10 CFR 50.69 License Condition - Revise LaSalle, Units 1 and 2 Technical Specificati ML24327A1642024-11-22022 November 2024 Fws to NRC, Federal Agency Coordination Under ESA Section 7 for Peach Bottom SLR and Concurrence with Not Likely to Adversely Affect Finding for Northern long-eared and Tricolored Bats ML24327A1652024-11-22022 November 2024 Fws to NRC, List of Threatened and Endangered Species That May Occur in Your Proposed Project Location or May Be Affected by Peach Bottom SLR ML24319A0752024-11-14014 November 2024 Additional Information Report for the Peach Bottom Atomic Power Station Units 2 and 3 Subsequent License Renewal Environmental Review ML24313A1012024-11-13013 November 2024 SLRA Supplemental Environmental Audit Plan ML24317A1432024-11-0404 November 2024 Constellation Energy Generation, LLC, 2024 Annual Report - Guarantees of Payment of Deferred Premiums ML24310A2832024-11-0404 November 2024 Issuance of the Core Operating Limits Report for Reload 25, Cycle 26 IR 05000277/20240032024-11-0404 November 2024 Integrated Inspection Report 05000277/2024003 and 05000278/2024003 IR 05000277/20244012024-10-17017 October 2024 Security Baseline Inspection Report 05000277/2024401 and 05000278/2024401 (Cover Letter Only) RS-24-093, Response to Request for Additional Information - Alternative Request to Utilize Code Case OMN-32, Alternative Requirements for Range and Accuracy of Pressure, Flow, and Differential Pressure Instruments Used in Pump Tests2024-10-10010 October 2024 Response to Request for Additional Information - Alternative Request to Utilize Code Case OMN-32, Alternative Requirements for Range and Accuracy of Pressure, Flow, and Differential Pressure Instruments Used in Pump Tests ML24284A2842024-10-10010 October 2024 (Wcgs), Revision of One Form That Implements the Radiological Emergency Response Plan (RERP) ML24281A1012024-10-0707 October 2024 Senior Reactor and Reactor Operator Initial License Examinations ML24275A2442024-10-0303 October 2024 Reassignment of the U.S. Nuclear Regulatory Commission Branch Chief, Division of Operating Reactor Licensing ML24240A1692024-09-18018 September 2024 Cy 2023 Summary of Decommissioning Trust Fund Status ML24221A2582024-09-0606 September 2024 Response to Request for Re-Engagement Regarding the Subsequent License Renewal Environmental Review for Peach Bottom Atomic Power Station, Units 2 and 3 ML24255A8642024-09-0606 September 2024 Rscc Wire & Cable LLC Dba Marmon Industrial Energy & Infrastructure - Part 21 Retraction of Final Notification 05000277/LER-2024-003, Automatic Reactor Scram Following Main Turbine Trip Due to Degraded Condenser Vacuum2024-09-0505 September 2024 Automatic Reactor Scram Following Main Turbine Trip Due to Degraded Condenser Vacuum IR 05000277/20240022024-09-0404 September 2024 Reissued Integrated Inspection Report 05000277/2024002 and 05000278/2024002 IR 05000277/20240052024-08-29029 August 2024 Updated Inspection Plan for Peach Bottom Atomic Power Station, Units 2 and 3 (Report 05000277/2024005 and 05000278/2024005) ML24235A0342024-08-23023 August 2024 U.S. Nuclear Regulatory Commission’S Analysis of Constellation Energy Generation’S Decommissioning Funding Status Report IR 05000277/20240102024-08-23023 August 2024 Fire Protection Team Inspection Report 05000277/2024010 and 05000278/2024010 ML24239A3972024-08-23023 August 2024 Rssc Wire & Cable LLC Dba Marmon - Part 21 Final Notification - 57243-EN 57243 IR 05000482/20240052024-08-14014 August 2024 Updated Inspection Plan for Wolf Creek Generating Station (Report 05000482/2024005) ML24227A5492024-08-14014 August 2024 Integrated Inspection Report 05000277/2024002 and 05000278/2024002 ML24225A1692024-08-12012 August 2024 10 CFR 50.46 Annual Report ML24222A6772024-08-0909 August 2024 Response to Request for Additional Information for Application to Revise Technical Specifications to Adopt TSTF-591-A, Revise Risk Informed Completion Time (RICT) Program Revision 0 and Revise 10 CFR 50.69 License Condition ML24214A3232024-08-0101 August 2024 Response to Request for Additional Information - Request for Alternative Schedule to Complete Decommissioning Beyond 60 Years of Permanent Cessation of Operations ML24208A0962024-07-25025 July 2024 57243-EN 57243 - Rssc Wire & Cable LLC, Dba Marmon - Part 21 Notification ML24206A1252024-07-24024 July 2024 Revision of Three Procedures and Two Forms That Implement the Radiological Emergency Response Plan (RERP) ML24191A0612024-07-0606 July 2024 Independent Spent Fuel Storage Installation (ISFSI) - Annual Radioactive Effluent Release Report ML24178A3672024-06-26026 June 2024 Correction to 2023 Annual Radioactive Effluent Release Report – Report 47 ML24178A4142024-06-26026 June 2024 Revision of One Procedure and One Form That Implement the Radiological Emergency Response Plan (RERP) ML24177A1512024-06-24024 June 2024 Post Accident Monitoring Instrumentation Report ML24166A1172024-06-20020 June 2024 Regulatory Audit Summary Regarding Proposed Alternative Schedule to Complete Decommissioning Beyond 60 Years RS-24-061, Constellation Energy Generation, LLC, Response to NRC Regulatory Issue Summary 2024-01, Preparation and Scheduling of Operator Licensing Examinations2024-06-14014 June 2024 Constellation Energy Generation, LLC, Response to NRC Regulatory Issue Summary 2024-01, Preparation and Scheduling of Operator Licensing Examinations IR 05000277/20243012024-06-13013 June 2024 Initial Operator Licensing Examination Report 05000277/2024301 and 05000278/2024301 2025-01-07
[Table view] Category:Licensee Event Report (LER)
MONTHYEAR05000277/LER-2024-003, Automatic Reactor Scram Following Main Turbine Trip Due to Degraded Condenser Vacuum2024-09-0505 September 2024 Automatic Reactor Scram Following Main Turbine Trip Due to Degraded Condenser Vacuum 05000277/LER-2024-002, Uncoordinated DC Circuits Cause Unanalyzed Condition2024-04-0808 April 2024 Uncoordinated DC Circuits Cause Unanalyzed Condition 05000277/LER-2024-001, Automatic Reactor Scram Due to an Invalid Generator Lockout2024-03-21021 March 2024 Automatic Reactor Scram Due to an Invalid Generator Lockout 05000278/LER-2023-002, Main Steam Isolation Valves Stroke Times Exceed Technical Specification Limit2023-12-14014 December 2023 Main Steam Isolation Valves Stroke Times Exceed Technical Specification Limit 05000278/LER-2023-001, Standby Liquid Control Pump Inoperable for Greater than LCO Window Due to Gas Intrusion2023-11-0707 November 2023 Standby Liquid Control Pump Inoperable for Greater than LCO Window Due to Gas Intrusion 05000277/LER-2022-002, Automatic Depressurization System Safety Relief Valve Actuator Diaphragm Degraded2022-12-15015 December 2022 Automatic Depressurization System Safety Relief Valve Actuator Diaphragm Degraded 05000277/LER-2022-001, Automatic Reactor Scram Due to Loss of Power to Both RPS Buses2022-07-15015 July 2022 Automatic Reactor Scram Due to Loss of Power to Both RPS Buses 05000277/LER-2021-003, Manual Reactor Scram Due to Degrading Condenser Vacuum2022-01-12012 January 2022 Manual Reactor Scram Due to Degrading Condenser Vacuum ML21196A4852021-07-16016 July 2021 LER 2-2021-002-00 for Peach Bottom Atomic Power Station, Unit 2, Safety Relief Valve Inoperability Due to Nitrogen Leakage from Braided Hose Wear 05000277/LER-2021-001, High Pressure Coolant Injection System Declared Inoperable Due to Instrument Power Inverter Failure2021-06-24024 June 2021 High Pressure Coolant Injection System Declared Inoperable Due to Instrument Power Inverter Failure 05000277/LER-2020-002, Degraded Condition Due to RPV Instrument Nozzle Leakage2020-12-22022 December 2020 Degraded Condition Due to RPV Instrument Nozzle Leakage 05000277/LER-2020-001, Emergency Diesel Generator Shutdown Due to Intercooler Low Pressure Results in Condition Prohibited by Technical Specifications2020-04-24024 April 2020 Emergency Diesel Generator Shutdown Due to Intercooler Low Pressure Results in Condition Prohibited by Technical Specifications 05000278/LER-2019-001, Failure of Reactor Mode Switch Results in Condition Prohibited by Technical Specifications2019-12-19019 December 2019 Failure of Reactor Mode Switch Results in Condition Prohibited by Technical Specifications 05000277/LER-2019-001, Regarding Emergency Bus Breaker Relay Failure Results in Loss of Safety Function2019-04-11011 April 2019 Regarding Emergency Bus Breaker Relay Failure Results in Loss of Safety Function 05000277/LER-2018-002-01, Emergency Diesel Generator Air Inlet Check Valve Failure Results in a Condition Prohibited by Technical Specifications2019-03-0404 March 2019 Emergency Diesel Generator Air Inlet Check Valve Failure Results in a Condition Prohibited by Technical Specifications 05000278/LER-2018-002-01, Reactor Coolant System Pressure Boundary Leakage Resulting in Technical Specification Required Shutdown2018-12-21021 December 2018 Reactor Coolant System Pressure Boundary Leakage Resulting in Technical Specification Required Shutdown 05000278/LER-2018-004, Failure of a Main Steam Isolation Valve to Fully Close2018-11-30030 November 2018 Failure of a Main Steam Isolation Valve to Fully Close 05000278/LER-2018-003, Automatic Reactor Scram Due to Loss of Two Condensate Pumps2018-11-29029 November 2018 Automatic Reactor Scram Due to Loss of Two Condensate Pumps 05000278/LER-2018-002, Reactor Coolant System Pressure Boundary Leakage Resulting in Technical Specification Required Shutdown2018-11-19019 November 2018 Reactor Coolant System Pressure Boundary Leakage Resulting in Technical Specification Required Shutdown 05000277/LER-2018-002, Unit 3, Emergency Diesel Generator Air Inlet Check Valve Failure Results in a Condition Prohibited by Technical Specifications2018-08-10010 August 2018 Unit 3, Emergency Diesel Generator Air Inlet Check Valve Failure Results in a Condition Prohibited by Technical Specifications 05000278/LER-2018-001, Reactor Core Isolation Cooling System Pressure Switch Failure Results in Condition Prohibited by TS2018-06-21021 June 2018 Reactor Core Isolation Cooling System Pressure Switch Failure Results in Condition Prohibited by TS 05000277/LER-2018-001, Fire Safe Shutdown Requirements Not Met for Spurious Operation of Valves at a High-Low Pressure Interface2018-05-11011 May 2018 Fire Safe Shutdown Requirements Not Met for Spurious Operation of Valves at a High-Low Pressure Interface 05000278/LER-1917-001, Regarding Reactor Pressure Boundary Leakage Due to Weld Failure in One-Inch Diameter Instrument Line2017-12-20020 December 2017 Regarding Reactor Pressure Boundary Leakage Due to Weld Failure in One-Inch Diameter Instrument Line 05000277/LER-2017-001, Regarding Emergency Diesel Generator Exhaust Stacks Nonconforming Design for Tornado Missile Protection2017-03-0808 March 2017 Regarding Emergency Diesel Generator Exhaust Stacks Nonconforming Design for Tornado Missile Protection 05000278/LER-2016-001, Regarding Leak in High Pressure Coolant Injection Drain Pipe Results in a Loss of Safety Function2016-11-22022 November 2016 Regarding Leak in High Pressure Coolant Injection Drain Pipe Results in a Loss of Safety Function 05000277/LER-2016-001, Regarding Leak in High Pressure Service Water Pipe Results in Condition Prohibited by Technical Specifications2016-11-11011 November 2016 Regarding Leak in High Pressure Service Water Pipe Results in Condition Prohibited by Technical Specifications 05000278/LER-2015-001, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter2016-02-26026 February 2016 Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter 05000277/LER-2015-001, Regarding Condition Prohibited by Technical Specification Due to Insufficient Remote Shutdown System Surveillance Testing2015-10-20020 October 2015 Regarding Condition Prohibited by Technical Specification Due to Insufficient Remote Shutdown System Surveillance Testing 05000277/LER-2014-003, Regarding Containment Leakage Limit Exceeded Due to Through-Seat Leakage of Feed Water Check Valves2014-12-0505 December 2014 Regarding Containment Leakage Limit Exceeded Due to Through-Seat Leakage of Feed Water Check Valves 05000277/LER-2014-001, Regarding Unanalyzed Condition Due to Broken Wires in Breakers Used for Appendix R Post-Fire Safe Shutdown2014-07-17017 July 2014 Regarding Unanalyzed Condition Due to Broken Wires in Breakers Used for Appendix R Post-Fire Safe Shutdown 05000278/LER-2013-001, Re Laboratory Analysis Identifies Safety Relief Valves and Safety Valve Set Point Deficiencies2013-11-22022 November 2013 Re Laboratory Analysis Identifies Safety Relief Valves and Safety Valve Set Point Deficiencies ML13058A0432013-02-22022 February 2013 Submittal of Independent Spent Fuel Storage Installation (ISFSI) Cask Event Report 05000278/LER-2012-003, Regarding Loss of Control Room Emergency Ventilation Function Due to Failure of Ventilation Fan to Start2012-11-29029 November 2012 Regarding Loss of Control Room Emergency Ventilation Function Due to Failure of Ventilation Fan to Start 05000277/LER-2012-002, Regarding Common Cause Inoperability of Reactor Protection System Turbine Control Valve Instruments2012-11-21021 November 2012 Regarding Common Cause Inoperability of Reactor Protection System Turbine Control Valve Instruments 05000277/LER-2012-001, Regarding Laboratory Analysis Identities Safety Relief Valves and Safety Valve Set Point Deficiencies2012-11-0202 November 2012 Regarding Laboratory Analysis Identities Safety Relief Valves and Safety Valve Set Point Deficiencies 05000278/LER-2012-002, Regarding Failure of Primary Containment Isolation Valve Due to Foreign Material Results in Condition Prohibited by TS2012-08-22022 August 2012 Regarding Failure of Primary Containment Isolation Valve Due to Foreign Material Results in Condition Prohibited by TS 05000278/LER-2012-001, For Peach Bottom Atomic, Unit 3 Regarding Concurrent Inoperability of Two Trains of Core Spray Pressure Switches Results in Condition Prohibited by TS2012-06-13013 June 2012 For Peach Bottom Atomic, Unit 3 Regarding Concurrent Inoperability of Two Trains of Core Spray Pressure Switches Results in Condition Prohibited by TS 05000278/LER-2011-004, Regarding HPCI Cable Routing Error Results in Degraded Post Fire Safe Shutdown (Fssd) Analysis2012-01-13013 January 2012 Regarding HPCI Cable Routing Error Results in Degraded Post Fire Safe Shutdown (Fssd) Analysis 05000277/LER-2011-005, For Peach Bottom, Unit 2, Regarding Inoperability of Qualified Offsite Power Circuit Due to Design Weakness2011-12-15015 December 2011 For Peach Bottom, Unit 2, Regarding Inoperability of Qualified Offsite Power Circuit Due to Design Weakness 05000278/LER-2011-001, Regarding Containment Isolation Valve Inability to Close for a Design Basis Event Due to Degraded Lubricant2011-12-0909 December 2011 Regarding Containment Isolation Valve Inability to Close for a Design Basis Event Due to Degraded Lubricant 05000277/LER-2011-004, For Peach Bottom, Unit 2, Regarding Oil Leak Resulting in E1 Emergency Diesel Generator Inoperability2011-11-22022 November 2011 For Peach Bottom, Unit 2, Regarding Oil Leak Resulting in E1 Emergency Diesel Generator Inoperability 05000278/LER-2011-003, For Peach Bottom Unit 3, Regarding Automatic Depressurization System Safety Relief Valve Actuator Diaphragm Thread Seal Leak2011-11-18018 November 2011 For Peach Bottom Unit 3, Regarding Automatic Depressurization System Safety Relief Valve Actuator Diaphragm Thread Seal Leak 05000278/LER-2011-002, For Peach Bottom Unit 3 - Residual Heat Removal Leaking Relief Valve Results in Condition Prohibited by Technical Specifications2011-11-17017 November 2011 For Peach Bottom Unit 3 - Residual Heat Removal Leaking Relief Valve Results in Condition Prohibited by Technical Specifications 05000277/LER-2011-003, Regarding Delayed Relay Operation Results in E-3 Emergency Diesel Generator Actuation During Surveillance Testing2011-10-21021 October 2011 Regarding Delayed Relay Operation Results in E-3 Emergency Diesel Generator Actuation During Surveillance Testing 05000277/LER-2011-002, For Peach Bottom, Units 2 and 3 - Condition Prohibited by Technical Specifications Due to Degraded Spent Fuel Pool Racks Boraflex Panels2011-07-29029 July 2011 For Peach Bottom, Units 2 and 3 - Condition Prohibited by Technical Specifications Due to Degraded Spent Fuel Pool Racks Boraflex Panels 05000277/LER-2011-001, For Peach Bottom Unit 2 High Pressure Coolant System Inoperable Due to Leaking Cooling Water Header Relief Valve2011-05-0606 May 2011 For Peach Bottom Unit 2 High Pressure Coolant System Inoperable Due to Leaking Cooling Water Header Relief Valve 05000277/LER-2010-004, Regarding Improper Credit for Function of Off-Site Power Source Transformer Load Tap Changer2010-11-24024 November 2010 Regarding Improper Credit for Function of Off-Site Power Source Transformer Load Tap Changer 05000277/LER-2010-003, Regarding Laboratory Analysis Identifies Safety Relief Valves and Safety Valve Set Point Deficiencies2010-11-19019 November 2010 Regarding Laboratory Analysis Identifies Safety Relief Valves and Safety Valve Set Point Deficiencies 05000277/LER-2010-002, Regarding Improperly Fastened Rod Hanger Results in Inoperable Subsystem of Emergency Service Water2010-11-15015 November 2010 Regarding Improperly Fastened Rod Hanger Results in Inoperable Subsystem of Emergency Service Water 05000277/LER-2010-001, Regarding Multiple Slow Control Rods Results in Condition Prohibited by Technical Specifications2010-03-19019 March 2010 Regarding Multiple Slow Control Rods Results in Condition Prohibited by Technical Specifications 2024-09-05
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