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	Site	Start date	Reporting criterion	System	Topic
05000266/LER-2017-003	Point Beach	30 October 2017 13 December 2017	10 CFR 50.73(a)(2)(ii)(A), Seriously Degraded	Reactor Coolant System	Safe Shutdown Boric Acid
05000416/LER-2017-007	Grand Gulf	12 December 2017	10 CFR 50.73(a)(2)(iv)(A), System Actuation	Secondary containment Emergency Diesel Generator Reactor Core Isolation Cooling Main Transformer
05000306/LER-2017-002	Prairie Island	16 October 2017 11 December 2017	10 CFR 50.73(a)(2)(ii)(A), Seriously Degraded	Reactor Coolant System	Boric Acid Non-Destructive Examination Pressure Boundary Leakage Pressure boundary leak Through Wall Leak
05000461/LER-2017-010	Clinton	9 December 2017 5 February 2018	10 CFR 50.73(a)(2)(iv)(A), System Actuation 10 CFR 50.73(a)(2)(v)(C), Loss of Safety Function - Release of Radioactive Material	Secondary containment Reactor Protection System Main Steam Isolation Valve Reactor Water Cleanup Standby Gas Treatment System Emergency Core Cooling System Control Rod	Unanalyzed Condition
05000440/LER-2017-006	Perry	1 December 2017	10 CFR 50.73(a)(2)(v)(B), Loss of Safety Function - Remove Residual Heat 10 CFR 50.73(a)(2)(v)(C), Loss of Safety Function - Release of Radioactive Material 10 CFR 50.73(a)(2)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident	High Pressure Core Spray	Probabilistic Risk Assessment Large early release frequency
05000397/LER-2017-007	Columbia	3 October 2017 30 November 2017	10 CFR 50.73(a)(2)(v)(C), Loss of Safety Function - Release of Radioactive Material 10 CFR 50.73(a)(2)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident	Secondary containment Emergency Diesel Generator
05000306/LER-2017-001	Prairie Island	2 May 2016 29 November 2017	10 CFR 50.73(a)(2)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications 10 CFR 50.73(a)(2)(i)(b) 10 CFR 50.73(a)(2)(ii)	Main Steam Line Containment Spray	Unanalyzed Condition
05000410/LER-2017-002	Nine Mile Point	30 September 2017 28 November 2017	10 CFR 50.73(a)(2)(v)(C), Loss of Safety Function - Release of Radioactive Material	Secondary containment Reactor Building Ventilation Standby Gas Treatment System	High winds
05000346/LER-2017-002	Davis Besse	13 September 2017 27 November 2017	10 CFR 50.73(a)(2)(v)(B), Loss of Safety Function - Remove Residual Heat 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications	Steam Generator Feedwater Service water Main Steam Isolation Valve Auxiliary Feedwater Main Steam Safety Valve Decay Heat Removal Main Steam	Time of Discovery Mission time Probabilistic Risk Assessment Large early release frequency
05000293/LER-2017-013	Pilgrim	26 November 2017 25 January 2018	10 CFR 50.73(a)(2)(v)(C), Loss of Safety Function - Release of Radioactive Material 10 CFR 50.73(a)(2)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident	Secondary containment Primary containment Standby Gas Treatment System	Mission time Recently irradiated fuel
05000446/LER-2017-003	Comanche Peak Comanche Peak Nuclear Power Plant, Unit 2	25 November 2017 22 January 2018	10 CFR 50.73(a)(2)(iv)(A), System Actuation 10 CFR 50.73(a)(2)(v), Loss of Safety Function	Steam Generator Feedwater Reactor Protection System Auxiliary Feedwater Main Turbine
05000425/LER-2017-002	Vogtle	17 November 2017	10 CFR 50.73(a)(2)(iv)(A), System Actuation	Emergency Diesel Generator Decay Heat Removal
05000254/LER-2017-003	Quad Cities	21 September 2017 17 November 2017	10 CFR 50.73(a)(2)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident	HVAC Control Room Emergency Ventilation	Probabilistic Risk Assessment Large early release frequency
05000266/LER-2017-001	Point Beach	18 September 2017 16 November 2017	10 CFR 50.73(a)(2)(ii)(B), Unanalyzed Condition 10 CFR 50.73(a)(2)(v)(A), Loss of Safety Function - Shutdown the Reactor 10 CFR 50.73(a)(2)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability		Safe Shutdown Unanalyzed Condition
05000263/LER-2017-006	Monticello	14 November 2017 12 January 2018	10 CFR 50.73(a)(2)(v)(A), Loss of Safety Function - Shutdown the Reactor 10 CFR 50.73(a)(2)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident 10 CFR 50.73(a)(2)(v), Loss of Safety Function	Reactor Coolant System Reactor Protection System Main Steam Isolation Valve Main Steam Line Main Steam	Safe Shutdown Half scram Fuel cladding
05000458/LER-2017-009	River Bend Docket Number	27 September 2017 13 November 2017	10 CFR 50.73(a)(2)(v)(C), Loss of Safety Function - Release of Radioactive Material	Secondary containment Primary containment Standby Gas Treatment System
05000293/LER-2017-012	Pilgrim	13 September 2017 13 November 2017	10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications	Emergency Diesel Generator
05000390/LER-2017-015	Watts Bar	9 November 2017 8 January 2018	10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications		Safe Shutdown
05000397/LER-2017-005	Columbia	12 September 2017 9 November 2017	10 CFR 50.73(a)(2)(v)(C), Loss of Safety Function - Release of Radioactive Material 10 CFR 50.73(a)(2)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident	Secondary containment Reactor Core Isolation Cooling
05000395/LER-2017-004	Summer	9 November 2017	10 CFR 50.73(a)(2)(iv)(A), System Actuation	Emergency Diesel Generator	High winds Large early release frequency
05000397/LER-2017-006	Columbia	21 September 2017 9 November 2017	10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications
05000272/LER-2017-001	Salem	9 November 2017 8 January 2018	10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications	Steam Generator Reactor Coolant System	Safe Shutdown
05000251/LER-2017-001	Turkey Point	10 September 2017 7 November 2017	10 CFR 50.73(a)(2)(iv)(A), System Actuation	Steam Generator Feedwater Reactor Protection System Auxiliary Feedwater	High winds
05000334/LER-2017-003	Beaver Valley	7 November 2017 4 January 2018	10 CFR 50.73(a)(2)(iv)(A), System Actuation	Steam Generator Feedwater Reactor Protection System Auxiliary Feedwater Control Rod
05000254/LER-2017-004	Quad Cities	7 November 2017 5 January 2018		Feedwater High Pressure Coolant Injection Core Spray Low Pressure Coolant Injection
05000289/LER-2017-003	Three Mile Island Three Mile Island Unit 1	6 November 2017	10 CFR 50.73(a)(2)(v)(C), Loss of Safety Function - Release of Radioactive Material 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications 10 CFR 50.73(a)(2)(ii)(A), Seriously Degraded	Primary containment
05000461/LER-2017-009	Clinton Clinton Power Station, Unit 1 .	5 November 2017 4 January 2018	10 CFR 50.73(a)(2)(v)(C), Loss of Safety Function - Release of Radioactive Material	Secondary containment Service water Standby Gas Treatment System
05000341/LER-2017-005	Fermi	3 November 2017	10 CFR 50.73(a)(2)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident	Feedwater Service water High Pressure Coolant Injection Emergency Diesel Generator Reactor Core Isolation Cooling Residual Heat Removal Automatic Depressurization System Emergency Equipment Cooling Water	Safe Shutdown Ultimate heat sink Past operability
05000286/LER-2017-004	Indian Point	3 November 2017 20 December 2017	10 CFR 50.73(a)(2)(iv)(A), System Actuation	Steam Generator Reactor Coolant System Feedwater Reactor Protection System Emergency Diesel Generator Auxiliary Feedwater Permanent Magnet Generator Main Condenser Control Rod Main Steam	Temporary Modification
05000482/LER-2017-003	Wolf Creek	7 September 2017 2 November 2017	10 CFR 50.73(a)(2)(ii)(B), Unanalyzed Condition 10 CFR 50.73(a)(2)(v)(A), Loss of Safety Function - Shutdown the Reactor 10 CFR 50.73(a)(2)(v)(B), Loss of Safety Function - Remove Residual Heat 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications	Steam Generator Main Steam Isolation Valve Main Turbine Main Steam Safety Valve Main Steam Line Main Steam	Safe Shutdown Unanalyzed Condition Time of Discovery Enforcement Discretion FLEX Tornado Generated Missile Tornado Missile Protection
05000220/LER-2017-003	Nine Mile Point	6 September 2017 2 November 2017	10 CFR 50.73(a)(2)(iv)(A), System Actuation	Feedwater High Pressure Coolant Injection Reactor Protection System Main Steam Isolation Valve Reactor Recirculation Pump Reactor Pressure Vessel Core Spray Emergency Core Cooling System Main Condenser
05000296/LER-2017-001	Browns Ferry	1 September 2017 31 October 2017		High Pressure Coolant Injection Reactor Core Isolation Cooling Core Spray Residual Heat Removal Automatic Depressurization System Core Standby Cooling System Emergency Core Cooling System Low Pressure Coolant Injection	Safe Shutdown Time of Discovery Past operability Probabilistic Risk Assessment Large early release frequency
05000395/LER-2017-006	Summer Vc Summer - Unit 1	31 October 2017 15 December 2017	10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications		Grab sample
05000390/LER-2017-014	Watts Bar	30 October 2017 20 December 2017	10 CFR 50.73(a)(2)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident	Control Room Emergency Ventilation	Safe Shutdown Probabilistic Risk Assessment
05000266/LER-2017-002	Point Beach	29 October 2017 13 December 2017	10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications	Steam Generator Reactor Coolant System Feedwater Auxiliary Feedwater	Safe Shutdown
05000395/LER-2017-003	Summer Vc Summer - Unit 1	28 August 2017 26 October 2017	10 CFR 50.73(a)(2)(iv)(A), System Actuation	Reactor Coolant System Feedwater Main Transformer Control Rod	Large early release frequency Fuel cladding
05000389/LER-2017-004	Saint Lucie	26 October 2017	10 CFR 50.73(a)(2)(iv)(A), System Actuation	Steam Generator Feedwater Reactor Protection System Auxiliary Feedwater Control Rod	Coatings
05000389/LER-2017-003	Saint Lucie	25 October 2017		Steam Generator Auxiliary Feedwater Decay Heat Removal
05000261/LER-2017-002	Robinson	24 October 2017 14 December 2017			Time of Discovery Contraband Scaffolding
05000390/LER-2017-012	Watts Bar	23 October 2017	10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications	Reactor Coolant System Emergency Diesel Generator Residual Heat Removal Containment Spray	Safe Shutdown Past operability Probabilistic Risk Assessment
05000278/LER-2017-001	Peach Bottom	23 October 2017 20 December 2017	10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications 10 CFR 50.73(a)(2)(ii)(A), Seriously Degraded	Reactor Coolant System Residual Heat Removal	Time of Discovery Pressure Boundary Leakage
05000390/LER-2017-011	Watts Bar	23 August 2017 23 October 2017	10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications		Safe Shutdown Time of Discovery
05000397/LER-2017-004	Columbia	20 August 2017 18 October 2017	10 CFR 50.73(a)(2)(iv)(A), System Actuation	Feedwater Main Steam Isolation Valve Main Turbine Reactor Pressure Vessel Main Condenser Control Rod	Temporary Modification
05000483/LER-2017-002	Callaway	15 August 2017 13 October 2017	10 CFR 50.73(a)(2)(ii)(B), Unanalyzed Condition 10 CFR 50.73(a)(2)(v)(A), Loss of Safety Function - Shutdown the Reactor 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications 10 CFR 50.73(a)(2)(ix)(A), Prevented Safety Function in Multiple System	Steam Generator Service water Emergency Diesel Generator Auxiliary Feedwater Main Steam Safety Valve Decay Heat Removal Main Steam Line Main Steam	Safe Shutdown Unanalyzed Condition Tornado Missile Enforcement Discretion FLEX Tornado-Generated Missile Tornado Missile Protection Tornado Missile Risk Evaluator Earthquake
05000390/LER-2017-010	Watts Bar	17 August 2017 10 October 2017	10 CFR 50.73(a)(2)(iv)(A), System Actuation 10 CFR 50.73(a)(2)(v)(C), Loss of Safety Function - Release of Radioactive Material 10 CFR 50.73(a)(2)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident	Auxiliary Feedwater Emergency Core Cooling System Control Rod	Safe Shutdown
05000219/LER-2017-005	Oyster Creek	9 October 2017 3 January 2018	10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications	Emergency Diesel Generator	Safe Shutdown Mission time
05000341/LER-2017-004	Fermi	10 August 2017 9 October 2017	10 CFR 50.73(a)(2)(v)(B), Loss of Safety Function - Remove Residual Heat 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications	Service water Emergency Diesel Generator Residual Heat Removal	Safe Shutdown Time of Discovery Mission time Past operability Offsite Circuit
05000387/LER-2017-007	Susquehanna	9 October 2017	10 CFR 50.73(a)(2)(v)(C), Loss of Safety Function - Release of Radioactive Material	Secondary containment
05000280/LER-2017-001	Surry	9 August 2017 6 October 2017	10 CFR 50.73(a)(2)(ii) 10 CFR 50.73(a)(2)(ii)(A), Seriously Degraded 10 CFR 50.73(a)(2)(i)(A), Completion of TS Shutdown	Reactor Coolant System	High Radiation Area Pressure Boundary Leakage Pressure boundary leak
05000446/LER-2017-001	Comanche Peak	11 August 2017 5 October 2017	10 CFR 50.73(a)(2)(v), Loss of Safety Function	Steam Generator Feedwater Auxiliary Feedwater

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