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	Start date	Site	Title	Reporting criterion	System	Topic
ENS 56862	17 November 2023 16:00:00	Up Health Systems Marquette	Medical Event - Y-90 Potential Underdose	10 CFR 35.3045(a)(1)		Underdose
ENS 56825	31 October 2023 13:00:00	River Bend	False Negative on Blind Performance Sample	10 CFR 26.719, FFD Reporting requirements
ENS 56809	21 October 2023 13:07:00	Watts Bar	Notification of Unusual Event Declared	10 CFR 50.72(a)(1)(i), Emergency Class Declaration		Fire Watch
ENS 56733	11 September 2023 00:00:00	Archer Daniels Midland Company	Fire at Facility Containing Radioactive Gauges	Agreement State
ENS 56726	7 September 2023 21:15:00	Tierra Inc.	Agreement State - Lost and Recovered Troxler Gauge	Agreement State		Moisture Density Gauge Troxler Troxler Gauge
ENS 56686	17 August 2023 04:00:00	West Virginia University Hospital	Medical Event - Patient Underdose	10 CFR 35.3045(a)(1)		Underdose
ENS 56644	30 July 2023 16:19:00	Waterford	Control Room Envelope Inoperable	10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident		Operability Determination
ENS 56637	25 July 2023 13:24:00	Millstone	Control Room Envelope Inoperable	10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident	Control Room Emergency Ventilation Control Room Envelope
ENS 56638	24 July 2023 15:00:00	Christiana Care Health System	Medical Event - Dose to Unintended Organ	10 CFR 35.3045(a)(3)
ENS 56620	12 July 2023 08:49:00	Millstone	ECCS Potentially Inoperable	10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat	Service water Emergency Core Cooling System	Time of Discovery
ENS 56600	26 June 2023 17:00:00	Uhs Of Oklahoma, Llc	Medical Misadministration	Agreement State
ENS 56570	13 June 2023 03:33:00	Fermi	Accident Mitigation - High Pressure Coolant Injection Declared Inoperable	10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident	High Pressure Coolant Injection Emergency Diesel Generator Emergency Equipment Cooling Water	Ultimate heat sink Mission time
ENS 56556	2 June 2023 18:30:00	Seabrook	FITNESS-FOR-DUTY Report	10 CFR 26.719, FFD Reporting requirements
ENS 56520	16 May 2023 16:27:00	Wolf Creek	Emergency Exhaust Inoperable	10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material
ENS 56762	8 May 2023 06:00:00	Construction Materials Technologies, Llc	Agreement State - Damaged Gauge	Agreement State
ENS 56512	8 May 2023 04:00:00	Henry Ford Hospital	Potential Medical Event	10 CFR 35.3045(a)(2)
ENS 56501	2 May 2023 19:00:00	Palisades	Loss of Communications	10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness
ENS 56481	19 April 2023 17:30:00	Southern Arizona Va Health Care	Medical Event - Patient Underdose	10 CFR 35.3045(a)(1)		Brachytherapy
ENS 56480	18 April 2023 21:30:00	Comanche Peak	Safe Shutdown Capability and Accident Mitigation	10 CFR 50.72(b)(3)(v)(A), Loss of Safety Function - Shutdown the Reactor	Emergency Core Cooling System Containment Spray	Safe Shutdown Time of Discovery
ENS 56411	15 March 2023 03:57:00	Browns Ferry	Reactor Coolant System (RCS) Boundary Degraded Condition	10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded	Reactor Coolant System Main Steam
ENS 56428	14 March 2023 14:26:00	River Bend	FITNESS-FOR-DUTY Report - Subversion of the FFD Process	10 CFR 26.719, FFD Reporting requirements
ENS 56409	14 March 2023 14:00:00	Susquehanna	High Pressure Core Injection Inoperable	10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
ENS 56470	28 February 2023 04:00:00	Univ. Of Maryland Medical Center	Dose Misadministration	Agreement State
ENS 56350	12 February 2023 13:00:00	Beaver Valley	Control Room Emergency Ventilation System Inoperable	10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition	Control Room Emergency Ventilation	Unanalyzed Condition
ENS 56318	19 January 2023 15:00:00	Hartford Hospital	Potential Medical Event	10 CFR 35.3045(a)(1)
ENS 56295	4 January 2023 06:48:00	Fermi	High Pressure Coolant Injection Inoperable	10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident	High Pressure Coolant Injection Emergency Equipment Cooling Water	Mission time
ENS 56289	28 December 2022 06:00:00	Exxon Mobil Corporation	Potentially Damaged Gauge	Agreement State
ENS 56266	9 December 2022 04:01:00	Prairie Island	Offsite Agency Notification Due to Chemical Leak	10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release	HVAC
ENS 56264	8 December 2022 19:02:00	Turkey Point	Unusual Event Due to Excessive Reactor Coolant System Leakage	10 CFR 50.72(a)(1)(i), Emergency Class Declaration	Reactor Coolant System
ENS 56241	28 November 2022 09:00:00	Fermi	High Pressure Coolant Injection System Inoperable	10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident	Service water High Pressure Coolant Injection Residual Heat Removal Emergency Equipment Cooling Water	Ultimate heat sink
ENS 56188	27 October 2022 07:00:00	Southern California Geotechnical	High Exposure Read on TLD	Agreement State
ENS 56135	30 September 2022 20:08:00	Saint Lucie	Safety System Inoperability	10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
ENS 56128	26 September 2022 21:41:00	Saint Lucie	Safety System Inoperability	10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
ENS 56059	20 August 2022 04:42:00	Grand Gulf	Technical Specification Required Shutdown	10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown	Automatic Depressurization System
ENS 56058	19 August 2022 17:15:00	Grand Gulf	Four Automatic Depressurization System Valves Inoperable	10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident	Automatic Depressurization System
ENS 56056	18 August 2022 13:48:00	Mitsubishi Power	Broken Window on Nuclear Gauge	Agreement State
ENS 56054	18 August 2022 01:08:00	Fermi	Safety System Inoperability	10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident	High Pressure Coolant Injection Reactor Core Isolation Cooling HVAC Automatic Depressurization System Emergency Equipment Cooling Water	Time of Discovery Ultimate heat sink
ENS 56013	23 July 2022 00:49:00	Wolf Creek	Auxiliary Feedwater Actuation Signal Received Due to Human Performance Error	10 CFR 50.72(b)(3)(iv)(A), System Actuation	Feedwater Auxiliary Feedwater
ENS 55930	8 June 2022 01:00:00	Louisiana Energy Services	UF6 Leakage Inside Autoclave	Part 70 App A (A)(4)
ENS 55871	29 April 2022 16:51:00	FitzPatrick	High Pressure Coolant Injection (HPCI) Inoperable	10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident	High Pressure Coolant Injection	Time of Discovery
ENS 55866	29 April 2022 03:55:00	Sequoyah	Notice of Unusual Event	10 CFR 50.72(a)(1)(i), Emergency Class Declaration		Operating Basis Earthquake
ENS 55831	7 April 2022 23:00:00	Turkey Point	Both Trains of Residual Heat Removal Inoperable	10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat	Residual Heat Removal
ENS 55785	12 March 2022 05:50:00	Turkey Point	Main Steam Isolation Valve Failed to Shut	10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident	Main Steam Isolation Valve
ENS 55780	10 March 2022 01:13:00	Brunswick	High Pressure Coolant Injection (HPCI) Inoperable	10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident	High Pressure Coolant Injection Reactor Core Isolation Cooling Automatic Depressurization System
ENS 55775	9 March 2022 00:19:00	Davis Besse	FITNESS-FOR-DUTY Report - Contract Supervisor Failed FITNESS-FOR-DUTY Test	10 CFR 26.719, FFD Reporting requirements
ENS 55770	7 March 2022 17:45:00	Louisiana Energy Services	Item Relied on for Safety (IROFS) Inoperable	Part 70 App A (A)(4)
ENS 55682	1 January 2022 17:10:00	Columbia	High Pressure Core Spray System Declared Inoperable	10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident	Service water Reactor Core Isolation Cooling High Pressure Core Spray Emergency Core Cooling System
ENS 55674	22 December 2021 17:45:00	Harris	Loss of Siren System	10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness
ENS 55652	15 December 2021 21:38:00	U.S. Air Force	Leaking Source from Aircraft Radium Dial	10 CFR 30.50(b)(2)
ENS 55643	14 December 2021 16:00:00	Monument Health	NON-AGREEMENT State Report - Medical Underdose	10 CFR 35.3045(a)(1)

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