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 SiteStart dateTitleTopic
ENS 57181Perry18 June 2024 20:40:00Inoperability of Division 3 Diesel Generator Supporting High Pressure Core Spray
ENS 57136Perry23 May 2024 08:00:00Technical Specification Required Shutdown
ENS 57130Perry16 May 2024 12:40:00Reactor Water Cleanup System Isolation Channel Inoperable
ENS 57092Perry25 April 2024 21:55:00Configuration of B and C Residual Heat Removal Loops in an Unanalyzed ConditionUnanalyzed Condition
ENS 56914Perry5 January 2024 20:52:00Offsite Notification
ENS 56915Davis Besse5 January 2024 15:40:00Emergency Ventilation Systems Inoperable
ENS 56673Perry10 August 2023 04:39:00Automatic Reactor Trip
ENS 56684Ohio State University28 July 2023 04:00:00Treatment to Wrong Side of Organ
ENS 56588Perry23 June 2023 19:21:00Offsite Notification - Environmental
ENS 56455Perry6 April 2023 20:46:00Main Steam Line 'B' Leakage in Excess of Tech Spec LimitsUnanalyzed Condition
ENS 56417Perry17 March 2023 02:26:00Failed FITNESS-FOR-DUTY Test
ENS 56413Davis Besse15 March 2023 13:50:00Offsite Notification of Inadvertent Actuation of Emergency SirensSiren
ENS 56400Ohio State University7 March 2023 05:00:00Misapplication of Medical Dose Resulting in Underdosing
ENS 56298Perry5 January 2023 17:42:00Automatic Reactor Scram
ENS 56284Davis Besse23 December 2022 20:13:00Technical Specification Required ShutdownUltimate heat sink
Enforcement Discretion
ENS 55962Perry24 June 2022 16:57:00LOW Pressure Core Spray Inoperable
ENS 55775Davis Besse9 March 2022 00:19:00FITNESS-FOR-DUTY Report - Contract Supervisor Failed FITNESS-FOR-DUTY Test
ENS 55739Ohio State University15 February 2022 13:00:00Reportable Occurance Related to Building Exhaust Fan
ENS 55734Davis Besse5 February 2022 20:14:00Technical Specification Required Shutdown
ENS 55346Davis Besse9 July 2021 01:54:00Automatic Reactor Trip Due to Main Turbine Trip
ENS 55321Davis Besse22 June 2021 16:08:00High-Energy Line Break Door Unable to Be Latched
ENS 55248Ohio State University10 May 2021 05:00:00Dose to Improper Treatment SiteTheraSphere
ENS 55172Perry6 April 2021 01:49:00Manual Reactor Protection System (RPS) Actuation at Zero Percent Power
ENS 55263Perry23 March 2021 04:37:0060-Day Optional Telephonic Notification for an Invalid Diesel Generator Initiation
ENS 54848Perry21 August 2020 13:53:00Standby Liquid Control System Inoperable
ENS 54792Davis Besse20 July 2020 00:03:00Offsite Notification - Emergency Siren FailureSiren
ENS 54611Davis Besse25 March 2020 16:40:00Manual Trip Due to Loss of Reactor Coolant Pumps
ENS 54507Perry1 February 2020 16:50:00
ENS 54263Davis Besse7 September 2019 17:09:00Automatic Reactor Trip
ENS 54229Davis Besse19 August 2019 13:24:00Auxiliary Feedwater System Inoperable
ENS 54219Davis Besse14 August 2019 16:01:00Inadvertant Activation of Emergency SirensSiren
ENS 54203Perry6 August 2019 17:35:00Inoperable Instrumentation Affects Safe Shutdown CapabilitySafe Shutdown
ENS 54209Ohio State University6 August 2019 04:00:00Agreement State Report - Leaking Eckert & Ziegler Cs-137 Vial Source
ENS 54185Perry27 July 2019 23:29:00Automatic Reactor Scram Due to Main Turbine TripReactor Vessel Water Level
ENS 54085Perry24 May 2019 11:30:00Low Pressure Core Spray Inoperable
ENS 53896Perry25 February 2019 05:24:00Automatic Reactor Scram Due to Generator Trip
ENS 53685Davis Besse22 October 2018 04:00:00En Revision Imported Date 11/12/2018
ENS 53675Perry19 October 2018 04:00:00Postulated Hot-Short Fire Event That Could Adversely Impact Safe Shutdown EquipmentSafe Shutdown
Unanalyzed Condition
ENS 53644Perry4 October 2018 04:00:00Postulated Hot Short Fire Event That Could Adversely Impact Safe Shutdown EquipmentHot Short
Safe Shutdown
Unanalyzed Condition
ENS 53481Perry1 July 2018 04:00:00Blown Fuse Leads to Loss of Safety FunctionTime of Discovery
ENS 53381Davis Besse8 March 2018 18:23:0060-Day Optional Telephonic Notification for an Invalid Edg Start During Outage Testing
ENS 53191Davis Besse1 February 2018 12:49:00Fitness for Duty - Confirmed Positive TestFitness for Duty
ENS 53137Perry23 December 2017 04:48:00High Pressure Core Spray System Declared InoperableTime of Discovery
Through-Wall Leak
ENS 53051Davis Besse3 November 2017 14:45:00Station Vent Radiation Monitor Efficiency Factor Non-ConservativeTime of Discovery
Grab sample
ENS 53000Perry4 October 2017 06:50:00Perry Commenced Technical Specification Required Shutdown
ENS 52903Perry15 August 2017 02:57:00Secondary Containment Momentary Low Vacuum
ENS 52891Perry8 August 2017 19:54:00High Pressure Core Spray System Suppression Pool Level Instrumentation Inoperable
ENS 52865Davis Besse20 July 2017 16:30:00Potential Tornado Missile VulnerabilitiesTornado Missile
Enforcement Discretion
Tornado-Generated Missile
Tornado Generated Missile
Tornado Missile Protection
ENS 52727Perry30 April 2017 22:18:00Open Bypass Valve Causes Loss of Safety Function
ENS 52701Davis Besse21 April 2017 06:02:00High Switchyard Voltage Renders Both Offsite Circuits InoperableOffsite Circuit