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| Issue date | Title | Topic | |
|---|---|---|---|
| 05000277/LER-2016-001 | 11 November 2016 | Leak in High Pressure Service Water Pipe Results in Condition Prohibited by Technical Specifications LER 16-001-00 for Peach Bottom, Unit 2, Regarding Leak in High Pressure Service Water Pipe Results in Condition Prohibited by Technical Specifications | Through-Wall Leak |
| 05000277/LER-2017-001 | 8 March 2017 | Emergency Diesel Generator Exhaust Stacks Nonconforming Design for Tornado Missile Protection LER 17-001-00 for Peach Bottom Atomic Power Station (PBAPS), Unit 2 Regarding Emergency Diesel Generator Exhaust Stacks Nonconforming Design for Tornado Missile Protection | Unanalyzed Condition Tornado Missile Enforcement Discretion FLEX Tornado-Generated Missile Tornado Generated Missile Tornado Missile Protection Earthquake |
| 05000278/LER-2015-001 | 26 February 2016 | Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter LER 15-001-00 for Peach Bottom, Unit 3, Regarding Loss of High Pressure Coolant Injection System Function as a Result of Failed Flow Controller Signal Converter | |
| 05000278/LER-2016-001 | 22 November 2016 | Leak in High Pressure Coolant Injection Drain Pipe Results in a Loss of Safety Function LER 16-001-00 for Peach Bottom, Unit 3, Regarding Leak in High Pressure Coolant Injection Drain Pipe Results in a Loss of Safety Function | |
| 05000278/LER-2017-001 | 20 December 2017 | Reactor Pressure Boundary Leakage Due to Weld Failure in One-Inch Diameter Instrument Line LER 17-001-00 for Peach Bottom Atomic Power Station (PBAPS), Unit 3 Regarding Reactor Pressure Boundary Leakage Due to Weld Failure in One-Inch Diameter Instrument Line | Time of Discovery Pressure Boundary Leakage |
| 05000289/LER-2017-001 | 3 February 2017 | Low Temperature Over-Pressurization (LTOP) Technical Specification Requirements Were Not Met LER 17-001-00 for Three Mile Island Unit 1 Regarding Low Temperature Over-Pressurization (LTOP) Technical Specification Requirements Were Not Met | |
| 05000289/LER-2017-002 | 6 February 2017 | 1 OF 5 LER 17-002-00 for Three Mile Island, Unit 1 Regarding Leak at High Pressure Connection on Reactor Coolant Pump "A" Thermal Barrier | Safe Shutdown Time of Discovery VT-2 Finite Element Analysis |
| 05000289/LER-2017-003 | 6 November 2017 | Primary Containment Declared Inoperable Due to Both Airlock Doors Open Simultaneously LER 17-003-00 for Three Mile Island, Unit 1 Regarding Primary Containment Declared Inoperable Due to Both Airlock Doors Open Simultaneously | |
| 05000289/LER-2017-004 | 5 February 2018 | Items Nonconforming to Design for Tornado Missile Protection LER 17-004-00 for Three Mile Island, Unit 1, Regarding Items Nonconforming to Design for Tornado Missile Protection | Safe Shutdown Unanalyzed Condition Enforcement Discretion Tornado Generated Missile Tornado Missile Protection |
| 05000352/LER-2016-001 | 23 March 2016 | Inoperable Reactor Enclosure Secondary Containment Integrity Due to Open Airlock LER 16-001-00 for Limerick, Unit 1, Regarding Condition That Could Have Prevented Fulfillment of the Reactor Enclosure Secondary Containment Integrity Safety Function | |
| 05000352/LER-2016-002 | 11 April 2016 | Condition Prohibited by Technical Specifications Due to Inoperable Safeguard Batteries During Cell Replacements LER 16-002-00 for Limerick, Unit 1 & 2, Regarding Condition Prohibited by Technical Specifications Due to Inoperable Safeguard Batteries During Cell Replacements | |
| 05000352/LER-2016-003 | 18 May 2016 | Plant Shutdown Required by Technical Specification Due to a Pressure Boundary Leak LER 16-003-00 for Limerick, Unit 1, Regarding Plant Shutdown Required by Technical Specification Due to a Pressure Boundary Leak | Pressure Boundary Leakage Pressure boundary leak Flow Induced Vibration |
| 05000352/LER-2017-001 | 27 January 2017 | Condition Prohibited by TS due to Parts Quality Issue LER 17-001-00 for Limerick Generating Station, Units 1 and 2 Regarding Condition Prohibited by TS due to Parts Quality Issue | |
| 05000353/LER-2016-001 | 27 July 2016 | Manual Actuation of the Reactor Protection System When Critical Due to Wiring Design Error LER 16-001-00 for Limerick, Unit 2 Regarding Manual Actuation of the Reactor Protection System When Critical Due to Wiring Design Error | |
| CNL-15-213, Compliance with Three Mile Island (TMI) Action Plan Requirements for an Operating License | 7 October 2015 | Compliance with Three Mile Island (TMI) Action Plan Requirements for an Operating License | |
| CY-92-223, G20110523/LTR-11-0411/EDATS: SECY-2011-0411 - Ltr. from Rep. E.J. Markey to Chairman Jaczko NRC Safety Requirements for Reactors Granted Construction Permits Prior to 1971 | 14 July 2011 | G20110523/LTR-11-0411/EDATS: SECY-2011-0411 - Ltr. from Rep. E.J. Markey to Chairman Jaczko NRC Safety Requirements for Reactors Granted Construction Permits Prior to 1971 | Fukushima Dai-Ichi Significance Determination Process Earthquake Backfit |
| IR 05000002/1977278 | 6 January 2009 | EA-08-298, Peach Bottom - Notice of Violation with Proposed Imposition of Civil Penalty - $65,000 (Peach Bottom Atomic Power Station - NRC Investigation Report No. 1-2008-001 and NRC Inspection Report Nos. 05000277-278/2007404; and 05000277 | Safeguards Contingency Plan Inattentive |
| IR 05000003/1952010 | 30 June 2010 | IR 05000352-10-0405 & 05000353-10-0405 on 06/15/10 - 06/17/10 for Limerick Generating Station; Security Baseline Inspection | Affidavit |
| IR 05000027/1977006 | 3 November 2006 | IR 050002777-06-004, 05000278-06-004; Exelon Generation Company, LLC; 07/01/2006 - 09/30/2006; Peach Bottom Atomic Power Station | High winds High Radiation Area Non-Destructive Examination Offsite Dose Calculation Manual Fire Barrier Internal Flooding Temporary Modification Significance Determination Process Scram Discharge Volume Hourly Fire Watch Scaffolding Unidentified leakage |
| IR 05000027/2013406 | 6 June 2013 | U.S. Nuclear Regulatory Commission Material Control and Accounting Program Inspection Report No. 0500027-13-406 and 05000278-13-406 | Affidavit |
| IR 05000035/2021011 | 19 December 2011 | IR 050003521-11-007, 050003531-11-007, 10/17/2011 - 11/04/2011, Limerick Generating Station, Units 1 and 2, Evaluations of Changes, Tests, or Experiments and Permanent Plant Modifications | Hot Short Safe Shutdown Coatings Significance Determination Process Reasonable doubt of operability Power Uprate |
| IR 05000053/2008402 | 12 February 2008 | IR 05000352-08-402, 0500053-08-402, on 01/18/2008, Limerick Generating Station, NRC Physical Baseline Inspection, Cover Letter | Affidavit |
| IR 05000171/2005007 | 10 August 2005 | IR 05000171-05-007, on 07/06/05 - 07/07/05; Peach Bottom Atomic Power Station, Unit 1, Verification of the Licensee'S Controls for Safe Storage of Radioactive Material | |
| IR 05000171/2006013 | 15 September 2006 | IR 05000171-06-013, on July 5-6, 2006, Peach Bottom Atomic Power Station, Exelon Generation Company, LLC Delta, Pennsylvania | |
| IR 05000171/2007007 | 19 November 2007 | IR 05000171-07-007; on 07/03-05/2007 and 09/23/2007; Peach Bottom Atomic Power Station Unit 1; Safstor Inspection | |
| IR 05000171/2012008 | 3 August 2012 | IR 05000171-12-008, on July 24-25, 2012, Peach Bottom Atomic Power Station, Unit 1 | Hydrostatic Process Control Program Earthquake |
| IR 05000171/2013009 | 24 May 2013 | IR 05000171-13-009, on 5/13/13 - 5/15/13, Exelon Generation Company, LLC, Peach Bottom Atomic Power Station Unit 1 | Annual Radioactive Effluent Release Report Annual Radiological Environmental Operating Report Process Control Program |
| IR 05000171/2014008 | 21 October 2014 | NRC Inspection Report No. 05000171/2014008 | Process Control Program |
| IR 05000171/2015009 | 3 September 2015 | IR 05000171/2015009 on 8/24 - 27/15, Exelon Generation Company, LLC, Peach Bottom Atomic Power Station Unit 1 - NRC Inspection Report No. 05000171/2015009 | Annual Radioactive Effluent Release Report Process Control Program |
| IR 05000171/2016008 | 6 July 2016 | NRC Inspection Report No. 05000171/2016008 | Grab sample Hydrostatic Annual Radioactive Effluent Release Report Process Control Program Fire Protection Program |
| IR 05000171/2017009 | 28 August 2017 | NRC Inspection Report No. 05000171/2017009 | |
| IR 05000171/2018001 | 23 May 2018 | NRC Inspection Report No. 05000171/2018001 | Hydrostatic Annual Radioactive Effluent Release Report Process Control Program Fire Protection Program |
| IR 05000171/2019001 | 30 May 2019 | Delta, Pennsylvania, NRC Inspection Report 05000171/2019001 | Annual Radioactive Effluent Release Report Process Control Program |
| IR 05000171/2020001 | 10 November 2020 | NRC Inspection Report No. 05000171/2020001, Exelon Generation Company, LLC, Peach Bottom Atomic Power Station, Unit 1 | Process Control Program COVID-19 |
| IR 05000171/2021001 | 12 January 2022 | Safstor Inspection Report 05000171/2021001 | Annual Radioactive Effluent Release Report Annual Radiological Environmental Operating Report Process Control Program Coronavirus |
| IR 05000171/2022001 | 4 January 2023 | Constellation Energy Generation, LLC, Peach Bottom Atomic Power Station, Unit 1 - NRC Inspection Report 05000171/2022001 | Process Control Program |
| IR 05000219/2012012 | 1 May 2014 | Nuclear Regulatory Commission Office of Investigations Investigation Summary of OI Report No. 3-2010-034 for Exelon Generation, LLC | |
| IR 05000219/2013201 | 31 January 2013 | Exelon Generation Co., LLC, U.S. Nuclear Regulatory Commission (NRC) Office of Investigations (01) Investigation; Summary of 01 Report No. 3-2010-034; NRC Inspection Report Conference Letter - Licensee | |
| IR 05000227/2006002 | 3 May 2006 | IR 05000227-06-002, & IR 05000278-06-002 on 01/01/2006 - 03/31/2006 for Peach Bottom Atomic Power Station (Pbaps); Units 2 and 3; Post-Maintenance Testing | Time of Discovery Packing leak Fire Barrier Operating Basis Earthquake Temporary Modification Significance Determination Process Earthquake Fuel cladding Pressure Boundary Leakage Unidentified leakage |
| IR 05000227/2016001 | 4 May 2016 | IR 05000227/2016001 & 05000278/2016001 - Peach Bottom Atomic Power Station - Integrated Inspection Report (Jan 1 2016 - Mar 31 2016) | High Radiation Area Fire Barrier Temporary Modification Functionality Assessment Significance Determination Process Operability Determination Maintenance Rule Program Power change Downpower |
| IR 05000237/2012012 | 1 May 2014 | Nuclear Regulatory Commission Office of Investigations Investigation Summary of OI Report No. 3-2010-034 for Exelon Generation, LLC | |
| IR 05000237/2013202 | 31 January 2013 | Exelon Generation Co., LLC, U.S. Nuclear Regulatory Commission (NRC) Office of Investigations (01) Investigation; Summary of 01 Report No. 3-2010-034; NRC Inspection Report Conference Letter - Licensee | |
| IR 05000254/2012012 | 1 May 2014 | Nuclear Regulatory Commission Office of Investigations Investigation Summary of OI Report No. 3-2010-034 for Exelon Generation, LLC | |
| IR 05000254/2013201 | 31 January 2013 | Exelon Generation Co., LLC, U.S. Nuclear Regulatory Commission (NRC) Office of Investigations (01) Investigation; Summary of 01 Report No. 3-2010-034; NRC Inspection Report Conference Letter - Licensee | |
| IR 05000272/2012012 | 1 May 2014 | Nuclear Regulatory Commission Office of Investigations Investigation Summary of OI Report No. 3-2010-034 for Exelon Generation, LLC | |
| IR 05000272/2013201 | 31 January 2013 | Exelon Generation Co., LLC, U.S. Nuclear Regulatory Commission (NRC) Office of Investigations (01) Investigation; Summary of 01 Report No. 3-2010-034; NRC Inspection Report Conference Letter - Licensee | |
| IR 05000277/2002001 | 1 March 2002 | 2002 Annual Assessment Letter - Peach Bottom Atomic Power Station (Report 50-277/02-01, 50-278/02-01 | License Renewal Siren |
| IR 05000277/2002004 | 23 July 2002 | IR 05000277-02-004, IR 05000278-02-004, on 05/19-06/29/2002; Exelon Generation Company; Peach Bottom Atomic Power Station; Units 2 and 3. Equipment Alignment | Fire Barrier Temporary Modification Emergency Lighting Significance Determination Process Job Performance Measure Operability Determination Power change |
| IR 05000277/2002005 | 8 November 2002 | IR 05000277-02-005, IR 05000278-02-005; on 06/30-09/28/2002; Exelon Generation Company; Peach Bottom Atomic Power Station; Units 2 and 3. Refueling and Other Outage Activities | High winds Packing leak High Radiation Area Offsite Dose Calculation Manual Fire Barrier Internal Flooding Temporary Modification Locked High Radiation Area Significance Determination Process Foreign Material Exclusion Operability Determination Control of Heavy Loads Liquid penetrant Preliminary White Finding Scaffolding Siren |
| IR 05000277/2002008 | 24 December 2002 | IR 05000277-02-008, IR 05000278-02-008, on 11/19-21/2002, Peach Bottom Atomic Power Station, Units 2 & 3. Emergency Preparedness Exercise Report |