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 SiteOrganizationStart dateTitleTopic
ENS 57220Cooper9 July 2024 09:55:00Loss of Communications Capabilities
ENS 57041Cooper13 March 2024 10:48:00High Pressure Coolant Injection (HPCI) Inoperable
ENS 56989Cooper22 February 2024 17:03:00Accident Mitigation - High Pressure Coolant Iinjection Declared Inoperable
ENS 56811Cooper22 October 2023 16:49:00Secondary Containment Momentarily Inoperable
ENS 56786Cooper10 October 2023 20:53:00Offsite Notification - Spurious Alarm ActuationSiren
ENS 56679Cooper Nuclear Power PlantCooper Nuclear Power Plant5 July 2023 05:00:00Part 21 Report - Relay Mechanical Problem
ENS 56509Cooper8 May 2023 07:07:00Shutdown Required by Technical Specifications Due to Inoperable Core Spray
ENS 56476Ppd Development, LlcWisconsin Radiation Protection23 February 2023 05:00:00Loss of Control of Radioactive Materials
ENS 56346Cooper9 February 2023 16:06:00Failed Fitness for Duty TestFitness for Duty
ENS 56299OlssonNe Div Of Radioactive Materials4 January 2023 23:00:00Damaged Moisture Density GaugeMoisture Density Gauge
ENS 56278Cooper17 December 2022 05:51:00Manual Reactor Scram
ENS 56263Hilltop 4 TheatresNe Div Of Radioactive Materials6 December 2022 06:00:00Lost Exit SignsTritium Exit Sign
Moisture Density Gauge
Exit Sign
ENS 56220Cooper13 November 2022 04:19:00Automatic Reactor Scram
ENS 56235Bryanlgh Medical CenterNe Div Of Radioactive Materials24 October 2022 05:00:00Lost I-125 Brachytherapy SeedBrachytherapy
Moisture Density Gauge
ENS 56174Cooper22 October 2022 17:58:00ECCS Injection While Shutdown
ENS 56152Cooper7 October 2022 05:50:00Potentially Contaminated Individual Transported to Hospital
ENS 57001CooperCooper27 August 2022 05:00:00Part 21 - Service Water Booster Pump Bearing Housing Cover Oil Leak
ENS 55981Cooper7 July 2022 21:01:00Loss of National Warning System Tower
ENS 55965Becton-DickinsonNe Div Of Radioactive Materials26 June 2022 05:00:00Irradiator Pool Water Exceeded Conductivity Limit
ENS 55948Frenchman Valley CoopNe Div Of Radioactive Materials16 June 2022 05:00:00Loss of Two Tritium Exit SignsTritium Exit Sign
Moisture Density Gauge
ENS 55907Cooper23 May 2022 09:55:00Secondary Containment Pressure Exceeded Technical Specification Requirement
ENS 55846Central Valley AgricultureNebraska Dept. Of Health15 April 2022 05:00:00Lost Tritium Exit SignsTritium Exit Sign
Moisture Density Gauge
ENS 55715Cooper27 January 2022 16:38:00Loss of Meteorlogical Data Acquisition System
ENS 55703Cooper13 January 2022 14:06:00Offsite Notification Due to Spurious Siren ActuationSiren
ENS 55690Fort Calhoun5 January 2022 15:09:00Offsite Notification Due to Onsite Fire
ENS 55676Siouxland Ethanol, LlcNe Div Of Radioactive Materials27 December 2021 06:00:00Lost Tritium Exit SignTritium Exit Sign
Moisture Density Gauge
ENS 55566Fort Calhoun8 November 2021 16:15:00Offsite Notification
ENS 55672Aurora Cooperative Ethanol, LlcNe Div Of Radioactive Materials11 October 2021 18:00:00Lost Tritium Exit SignsTritium Exit Sign
Moisture Density Gauge
ENS 55306Fort Calhoun15 June 2021 17:30:00Offsite Notification
ENS 55270Becton DickensonNe Div Of Radioactive Materials21 May 2021 21:00:00Heat and Smoke Detector Failed to FunctionFire Watch
ENS 55098Cooper9 February 2021 07:53:00Control Release of Radioactive Material and Accident MitigationTime of Discovery
ENS 55062Church Of Jesus Christ Latter Day SaintsNe Div Of Radioactive Materials11 January 2021 06:00:00Two Missing Tritium Exit SignsTritium Exit Sign
Moisture Density Gauge
ENS 54976Cooper1 November 2020 10:34:00Manual Reactor Trip Due to an Un-Isolable Leak on the Turbine High Pressure Fluid SystemReactor Vessel Water Level
ENS 55027Engine Systems Inc.Engine Systems, Inc20 October 2020 05:00:00Part 21 Report - Camshaft Key with Incorrect Stamping
ENS 54940Olsson AssociatesNe Div Of Radioactive Materials8 October 2020 05:00:00Lost Then Found Moisture / Density GaugeMoisture Density Gauge
Troxler Moisture Density Gauge
ENS 54907Fort Calhoun23 September 2020 20:28:00Offsite Notification - Press Release for a Fire in ContainmentFire Watch
ENS 54990Nebraska Department Of AgricultureNe Div Of Radioactive Materials17 September 2020 05:00:00Accidentally Sold a Sealed Source DeviceMoisture Density Gauge
ENS 54896Ne Div Of Radioactive MaterialsNe Div Of Radioactive Materials9 September 2020 21:29:00Agreement State Report - Water Loss from Source Storage Pool
ENS 54690Cooper1 May 2020 13:31:00Both Secondary Containment Access Doors Open SimultaneouslyTime of Discovery
ENS 54622Ne Div Of Radioactive MaterialsNe Div Of Radioactive Materials5 March 2020 05:00:00Agreement State Report - Stuck Open Shutter on Density GaugeStuck Open Shutter
ENS 54500Ne Div Of Radioactive MaterialsNe Div Of Radioactive Materials29 January 2020 06:00:00Agreement State Report - Lost Tritium Exit SignsTritium Exit Sign
Moisture Density Gauge
ENS 54490Ne Div Of Radioactive MaterialsNe Div Of Radioactive Materials22 January 2020 06:00:00Agreement State Report - Missing Self Luminous Signs Containing TritiumMoisture Density Gauge
Tritium Sign
ENS 54432Delong CompanyNe Div Of Radioactive Materials9 December 2019 06:00:00En Revision Imported Date 12/23/2019Tritium Exit Sign
Moisture Density Gauge
Exit Sign
ENS 54425Cooper5 December 2019 14:10:00Fire Door Discovered UnlatchedUnanalyzed Condition
Time of Discovery
ENS 54434Celerion Inc.Ne Div Of Radioactive Materials12 November 2019 06:00:00Agreement State Report - Lost Licensed Nuclear MaterialMoisture Density Gauge
ENS 54232Cooper19 August 2019 14:39:00Loss of Public Prompt Notification System
ENS 54141Mid-State Engineering And TestingNe Div Of Radioactive Materials2 July 2019 18:30:00Agreement State Report - Lost Portable GaugeMoisture Density Gauge
ENS 54192Mid-State Engineering And TestingNe Div Of Radioactive Materials2 July 2019 05:00:00Agreement State Report - Lost and Recovery of a Moisture Density GaugeMoisture Density Gauge
ENS 54099Cooper4 June 2019 13:15:00Issuance of Press Release Due to Spurious Actuation of Emergency SirensSiren
ENS 54429Dr. Michael MeyerNe Div Of Radioactive Materials15 May 2019 06:00:00En Revision Imported Date 12/20/2019Tritium Exit Sign
Moisture Density Gauge
Exit Sign