INES Levels

INES 1: Anomaly

Impact on Defence-in-Depth
  • Overexposure of a member of the public in excess of statutory ­annual limits.
  • Minor problems with safety components with significant defence-in-depth remaining.
  • Low activity lost or stolen radioactive source, device or transport package.
(Arrangements for reporting minor events to the public differ from country to country. Also, it is difficult to ensure precise consistency in rating events between INES Level-1 and Below scale/Level-0)
Legenda & explanation
date title location 
2023-03-24Accidental exposure of workersPolandRadioisotope Centre POLATOM, Otwock-Świerk
2023-03-22Missing Dangerous Source at Salamanca, Guanajuato, Mexico.MexicoSalamanca, Guanajuato, Mexico
2022-09-14Missing Dangerous Source at Estado de MexicoMexicoEstado de Mexico
2022-05-29Violation of Operational Limits and Conditions is the Interim Spent Fuel Storage FacilityHungaryPaks, Interim Spent Fuel Storage Facility
2022-04-21Rod type source of a level gauge became openHungaryNitronénművek Co Ltd.
2021-05-23Failure of a defectoscope during industrial radiography testHungaryBorsodchem PLC
2021-04-11Stolen Radiography Camera.MexicoTeoloyucan, Mexico State /
2021-02-11Violation of OL&C in the Interim Spent Fuel Storage Facility at PaksHungaryPaks
2021-02-08Stolen Radioactive Source in Mexico on February 8 at some point of the road between Apaseo el Alto and Salamanca, Guanajuato.MexicoSalamanca, Guanajuato State
2020-11-28Am-241 meltingsFinlandFinnish steel factory
2020-11-24Discovered Ra-226 source in Copper scrap metalsIranIslamic Republic of, Northwest border
2020-10-03Stolen Radiography CameraMexicoCalpulalpan- Texcoco road (Km 59) / Transport
2020-09-19Stolen Catgeory-2 source at Ciudad Obregon, Sonora, México.MexicoCiudad Obregon, Sonora
2019-12-12Discovered Ra-226 source in transport container containing scrap metal.NorwayHermod Teigen AS, Egersund, Norway
2019-10-01Theft and recovery of a moisture/density gaugeSlovakiaBratislava-Podunajské Biskupice
2019-06-26Loss and subsequent recovery of a radiography device containing sourceIndiaChakan, Pune
2019-01-21Drop of a source into a logging wellHungaryPécs
2019-01-16Loss and subsequent recovery of a radioactive sourceIndiaRajahmundry, Oil and Natural Gas Corporation Ltd.
2019-01-14Lost and Subsequent Recovery of a Radioactive SourcePakistanWajedo International Corporation (Private) Limited
2019-01-11Co60 source discovered in a scrap metal deliveryGermanyPort of Hamburg
2018-12-18Missing Tc-99m GeneratorSwitzerlandSion, nuclear medicine institute
2018-09-21Am-241 source meltingFinlandFinnish steel factory
2018-09-15Am-241 source meltingFinlandFinnish steel factory
2018-07-26Am-241 source meltingFinlandFinnish steel factory
2018-07-06Stolen industrial radiography device in Mexico CityMexicoMexico City
2018-06-26Am-241 source meltingFinlandFinnish steel factory
2018-02-08Stolen Moisture/Density Gauge in León, GuanajuatoMexicoComunidad Santa Ana del Conde, León, Guanajuato.
2017-10-16Stolen and recovered radioagraphy cameraMexicoTepic, Nayarit
2017-08-01Stolen radioactive materialMexicoSan Nicolas de los Garza, Nuevo León
2017-04-14Stolen gamma densitometerFranceSouth of France / Valérian Company