INES Levels

INES 2: Incident

Impact on People and Environment:
  • Exposure of a member of the public in excess of 10 mSv.
  • Exposure of a worker in excess of the statutory annual limits.
Impact on Radiological Barriers and Control:
  • Radiation levels in an operating area of more than 50 mSv/h.
  • Significant contamination within the facility into an area not expected by design.
Impact on Defence-in-Depth:
  • Significant failures in safety ­provisions but with no actual ­consequences.
  • Found highly radioactive sealed orphan source, device or transport package with safety provisions intact.
  • Inadequate packaging of a highly radioactive sealed source.
Legenda & explanation
date title location 
2018-12-31External corrosion affecting multiple systems on a power reactorDUNGENESS B
2018-09-24Misdelivered Radioactive Transport PackagesExport packing company in vicinity of Heathrow
2018-04-06Worker OverexposurePasadena, Texas / Techcorr USA Management LLC
2018-03-14Worker OverexposureBenicia, California / Qualspec, LLC
2018-03-14Overexposure of a workerVeterinary clinic in Tampere
2017-12-01Worker OverexposureBuford Georgia / Theragenics Corporation
2017-11-09Insufficient seismic resistance of emergency diesel generatorsPALUEL-1
2017-10-20Overexposure of a radiologists (hands exposure)Hospital Delafontaine - Saint Denis (Paris region)
2017-09-21Contamination event at research facilityStudsvik Nuclear AB
2017-08-18Insufficient seismic resistance of a part of the canal embankment along the Tricastin NPPTRICASTIN-1
2017-08-04Overexposure of Workers after Moderator Heavy Water Leak from Bonnet Gasket of Moderator Storage Tank Outlet ValveKANUPP-1
2017-08-02Risk of loss of heat sink in case of an earthquake - 20 reactors concernedBELLEVILLE-1
2017-07-25Exposure of airplane passengers due to inadequate use of type B transport packageNTP Europe
2017-07-21Worker OverexposureJacksonville, Florida / Triad Isotopes Inc.
2017-07-04Uranium accumulation in a glove box air purification systemLynchburg, Virginia / BWX Technologies, INC.
2017-06-20Emergency diesel generators auxiliary systems not compliant with seismic requirements on the 1300 MW reactors (8 sites - 20 reactors)BELLEVILLE-1
2017-06-06Exposure of Workers at Plutonium Fuel Research FacilityOarai Research and Development Center
2017-05-15Overexposure to RadiographerWisconsin Rapids, Wisconsin/ACUREN INSPECTION, INC
2017-04-28Overexposure to RadiographerHouston, Texas / Versa Integrity
2017-04-23Stolen source in Tlaquepaque, JaliscoTlaquepaque, Jalisco
2017-02-05Over Exposure of an Operator From a Puncture Wound During Work in an Active GloveboxSellafield
2017-01-08Personal Contamination at Reprocessing PlantSellafield
2016-12-12Inadvertent damage of a Se-75 sourceDüsseldorf region
2016-11-06Transport of package containing a radioactive source from Kenya to South AfricaFrom Kenya to South Africa
2016-10-19Overexposure of a member of the publicSakarya province
2016-10-19Overdose to Nuclear PharmacistPortland, Oregon/Petnet Solutions
2016-10-07Cyclotron operated with an open bunker doorUniversity Hospital of Umeå
2016-08-24Overexposure to RadiographerMistras Group/Deer Park Texas
2016-08-15Electronic Personal Dosimeter went into Alarm during X-ray Radiography OperationsSellafield
2016-07-13Excessive Deposits of Material Containing Uranium In ScrubberHopkins, SC, USA/Westinghouse Fuel Fabrication Fac