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{
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	Issue date	Title	Topic
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
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 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 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 05000277/2012012	1 May 2014	Nuclear Regulatory Commission Office of Investigations Investigation Summary of OI Report No. 3-2010-034 for Exelon Generation, LLC
IR 05000277/2013201	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 05000289/2001008	28 January 2002	IR 05000289-01-008, on 11/11 - 12/29/2001, Amergen Energy Company, LLC, Three Mile Island Unit 1, Integrated Resident Inspector Report, Operability Evaluations	Past operability Significance Determination Process Pressure Boundary Leakage Siren
IR 05000289/2002001	4 March 2002	2002 Annual Assessment Letter - Three Mile Island Station, Unit 1 (Report 50-289/02-01)
IR 05000289/2002003	16 April 2002	IR 05000289/2002-003, on 03/04-22/2002; Amergen Energy Company, LLC; Three Mile Island (TMI) Unit 1; Biennial Baseline Inspection of Identification and Resolution of Problems. One Green Finding Was Identified Regarding Problem Evaluation
IR 05000289/2002005	25 July 2002	IR 05000289-02-005, on 05/12/2002 - 06/29/2002, Amergen Energy Company, LLC, Three Mile Island Unit 1, Integrated Resident Inspector Report	High Radiation Area Locked High Radiation Area Significance Determination Process Deep Dose Equivalent Substantial potential for an overexposure Overexposure
IR 05000289/2002006	7 November 2002	IR 05000289-02-006; Amergen Energy Company, LLC; on 6/30-9/28/2002; Three Mile Island, Unit 1; Maintenance Rule Implementation; Surveillance Testing	Offsite Dose Calculation Manual Internal Flooding Hydrostatic Past operability Temporary Modification Condition Adverse to Quality Significance Determination Process Unidentified leakage Unidentified leak
IR 05000289/2002007	28 January 2003	IR 05000289-02-007, on 09/29/2002 - 12/28/2002 for Amergen Energy Company, LLC; Three Mile Island Unit 1; Event Followup
IR 05000289/2002011	13 November 2002	IR 05000289-02-011, on 10/07 - 10/25/2002, Three Mile Island Unit 1, Triennial Fire Protection Inspection Report	Safe Shutdown Fire Barrier Fire impairment Emergency Lighting Significance Determination Process Operability Determination Exemption Request Fire Protection Program
IR 05000289/2003001	4 March 2003	2003-Annual Assessment Letter - Three Mile Island, Unit 1 (Report No. 50-289/2003-001)	Operability Assessment
IR 05000289/2003002	28 April 2003	IR 05000289-03-002, on 12/29/2002-03/29/2003; for Amergen Energy Company, LLC; Three Mile Island, Unit 1; Routine Report	Boric Acid
IR 05000289/2003003	23 July 2003	IR 05000289-03-003; 3/30/2003-6/28/2003; Amergen Energy Company, LLC; Three Mile Island, Unit 1, Temporary Modifications, Identification and Resolution of Problems	High Radiation Area Offsite Dose Calculation Manual Internal Flooding Temporary Modification Locked High Radiation Area Significance Determination Process Operability Determination Power change
IR 05000289/2003004	10 November 2003	IR 05000289-03-004, on 06/29/03 - 09/27/2003, for Amergen Energy Company, LLC; Three Mile Island, Unit 1; Identification and Resolution of Problems	High winds High Radiation Area Offsite Dose Calculation Manual Temporary Modification Locked High Radiation Area Significance Determination Process Annual Radioactive Effluent Release Report Process Control Program Operability Determination Fire Protection Program
IR 05000289/2003005	23 January 2004	IR 05000289-03-005; 09/28/2003 - 12/31/2003; Amergen Energy Company, LLC; Three Mile Island, Unit 1; Refueling and Outage Activities and Other Activities (Reactor Containment Sump Blockage - NRC Bulletin 2003-01)	Boric Acid High Radiation Area Offsite Dose Calculation Manual Stroke time Safe Shutdown Earthquake Weld Overlay Internal Flooding Coatings Nondestructive Examination Temporary Modification VT-2 Locked High Radiation Area Condition Adverse to Quality Significance Determination Process Foreign Material Exclusion Operability Determination Moisture barrier Code Reconciliation Fuel cladding Liquid penetrant Pressure Boundary Leakage Pressure boundary leak Scaffolding
IR 05000289/2003006	2 June 2003	IR 05000289-03-006; on 04/21-24/2003; Three Mile Island Station, Unit 1. Emergency Preparedness Exercise Report. No Violations Noted
IR 05000289/2003007	25 August 2003	IR 05000289-03-007; on 06/23/03 - 07/11/03, Three Mile Island Station, Unit 1; Engineering Team Report	Safe Shutdown Fire Barrier Temporary Modification Significance Determination Process Operability Determination Battery sizing
IR 05000289/2003008	6 May 2003	IR 05000289-03-008, Dtd 03/24-03/26/2003; Three Mile Island Station Unit 1; Temporary Instruction 2515/148, Inspection of Nuclear Reactor Safeguards Interim Compensatory Measures. Warrenville, Il
IR 05000289/2003009	10 March 2004	IR 05000289-03-009, on 12/8/2003 - 01/30/2004; Three Mile Island; Emergency Preparedness Report for Multi-site Drill	Met Tower Operability Determination Siren
IR 05000289/2004002	11 May 2004	IR 05000289-04-002 on 01/01/2004 - 03/31/2004; Amergen Energy Company, LLC; Three Mile Island, Unit 1; Equipment Alignment and Licensed Operator Requalification	High Radiation Area Mission time Weld Overlay Internal Flooding Past operability Temporary Modification Significance Determination Process Job Performance Measure Operability Determination Maintenance Rule Program Pressure Boundary Leakage Scaffolding Operability Assessment
IR 05000289/2004003	29 July 2004	IR 05000289-04-003, on 04/01/2004 - 06/30/2004; Amergen Energy Co, LLC; Three Mile Island, Unit 1; Surveillance Testing	Mission time Past operability Temporary Modification Condition Adverse to Quality Significance Determination Process Operability Determination Hourly Fire Watch
IR 05000289/2004004	8 November 2004	IR 05000289-04-004; 07/01/2004 - 09/30/2004; Amergen Energy Company, LLC; Three Mile Island, Unit 1; Surveillance Testing and Operability Evaluations	Safe Shutdown Boric Acid High winds Offsite Dose Calculation Manual Stroke time Internal Flooding Probabilistic Risk Assessment Temporary Modification Zebra Mussel Significance Determination Process Operability Determination Continuous fire watch
IR 05000289/2004005	14 February 2005	IR 05000289-04-005; 10/01/2004 - 12/31/2004; Amergen Energy Company, LLC; Three Mile Island, Unit 1; Personnel Performance During Non-routine Plant Evolutions, Performance Indicator Verification, Identification and Resolution of Problems, E	High Radiation Area Past operability Enforcement Discretion Fire impairment Temporary Modification Significance Determination Process Operability Determination Earthquake Maintenance Rule Program Fuel cladding Power change Downpower Siren
IR 05000289/2004006	10 May 2004	IR 05000289-04-006, on 03/08-04 Through 03/12/04 & 03/22/04 Through 03/26/04, for Three Mile Island Station Unit 1; Biennial Baseline Inspection of Identification and Resolution of Problems	Operability Determination
IR 05000289/2005003	20 June 2005	IR 05000289-05-003; on 05/03/2005-06/06/2005; for Three Mile Island Station Unit 1; Emergency Preparedness Exercise; Emergency Preparedness Performance Indicators
IR 05000289/2005004	28 July 2005	IR 05000289-05-004; 04/01/2005 - 06/30/2005; Amergen Energy Company, LLC; Three Mile Island, Unit 1; Maintenance Implementation, Post Maintenance Testing, and Radioactive Material Processing and Transportation	Boric Acid High Radiation Area Mission time Fire Barrier Stroke time Hydrostatic Temporary Modification Significance Determination Process Annual Radioactive Effluent Release Report Process Control Program Operability Determination Maintenance Rule Program Preliminary White Finding
IR 05000289/2005005	4 November 2005	IR 05000289-05-005; 7/01/2005 - 9/30/2005; Amergen Energy Company, LLC; Three Mile Island, Unit 1; Heat Sink, Maintenance Implementation	Boric Acid Non-Destructive Examination Mission time Stroke time Internal Flooding Probabilistic Risk Assessment Temporary Modification Significance Determination Process Operability Determination
IR 05000289/2005006	29 July 2005	IR 05000289-05-006; on 05/19/05, Three Mile Island, Unit 1, Final Significance Determination for a White Finding (NRC Emergency Preparedness Program Inspection Report)	Significance Determination Process Preliminary White Finding
IR 05000289/2005007	8 September 2005	IR 05000289-05-007, on 07/11-29/2005, Amergen Energy Company, LLC, Engineering Team Inspection	Boric Acid
IR 05000289/2005009	30 January 2006	IR 05000289-05-009; 10/1/2005 - 12/31/2005; Amergen Energy Company, LLC; Three Mile Island, Unit 1; Refueling and Other Outage Activities, Problem Identification and Resolution Sample, and Other Activities	Safe Shutdown Boric Acid High Radiation Area Coatings Nondestructive Examination Temporary Modification VT-2 Significance Determination Process Operability Determination Maintenance Rule Program Liquid penetrant Fire Protection Program Fire Watch Scaffolding Exclusive Use
IR 05000289/2005012	13 January 2006	IR 05000289-05-012 on 11/28/2005 - 12/15/2005 for Three Mile Island (TMI) Station, Unit 1; Triennial Fire Protection Team Inspection, Fire Protection	Hot Short Safe Shutdown Fire Barrier Emergency Lighting Significance Determination Process Fire Protection Program Fire Watch
IR 05000289/2005301	28 July 2005	IR 05000289-05-301 on 05/9-16/05 for Three Mile Island; Initial Operator Licensing Examination
IR 05000289/2006003	4 May 2006	IR 05000289-06-003; 1/1/2006 - 3/31/2006; Amergen Energy Company, LLC; Three Mile Island, Unit 1; Identification and Resolution of Problems	Safe Shutdown Offsite Dose Calculation Manual Internal Flooding Probabilistic Risk Assessment Temporary Modification Significance Determination Process Operability Determination
IR 05000289/2006005	2 November 2006	IR 05000289-06-005; on 7/01/2006 - 9/30/2006; Amergen Energy Company, LLC; Three Mile Island, Unit 1; Post Maintenance Testing	High winds Offsite Dose Calculation Manual Probabilistic Risk Assessment Temporary Modification Significance Determination Process Job Performance Measure Operability Determination Siren
IR 05000289/2006006	31 January 2007	IR 05000289-06-006; 10/1/2006 - 12/31/2006; Amergen Energy Company, LLC; Three Mile Island, Unit 1; Other Activities	Hot Short Safe Shutdown Unanalyzed Condition Time of Discovery Fitness for Duty High winds High Radiation Area Non-Destructive Examination Mission time Internal Flooding Past operability Significance Determination Process Operability Determination Maintenance Rule Program Fire Protection Program Fire Watch Scaffolding Inattentive
IR 05000289/2006007	15 May 2006	IR 05000289-06-007; 03/13/2006 - 03/31/2006; Amergen Energy Company, LLC; Three Mile Island, Unit 1; Biennial Baseline Inspection of the Identification & Resolution of Problems. Violations Were Identified in the Areas of Problem Identificat	Mission time Condition Adverse to Quality Significance Determination Process Operability Determination
IR 05000289/2006010	24 April 2006	IR 05000289-06-010 on 02/28/2006 - 03/14/2006 for Amergen Energy Company, LLC (Amergen); Three Mile Island Station, Unit 1; Supplemental Inspection

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