IN THE MEDICAL FIELD RATED ON THE INES SCALE (*) * The INES scale (International Nuclear and Radiological Event Scale) was developed by the International Atomic Energy Agency (IAEA) to explain to the public the importance of an event in terms of safety or radiation protection. This scale applies to events occurring in BNIs and events with potential or actual consequences for the radiation protection of the public and workers. It does not apply to events with an impact on the radiation protection of patients, and the criteria normally used to rate events (notably the dose received) are not applicable in this case. As it was pertinent to be able to inform the public of radiotherapy events, ASN – in close collaboration with the French Society for Radiotherapy and Oncology – developed a scale specific to radiotherapy events (ASN-SFRO scale). These two scales cover a relatively wide range of radiation protection events, with the exception of imaging events. 1,098 events 1,010 86 86 events 2 201 events 2 25 Level 0 Level 1 Level 2 SMALL-SCALE NUCLEAR ACTIVITIES (medical and industry) TRANSPORT OF RADIOACTIVE SUBSTANCES BASIC NUCLEAR INSTALLATIONS 84 176 NUMBER OF SIGNIFICANT EVENTS IN 2023 658 significant events per area of exposure BRACHYTHERAPY EXTERNAL-BEAM RADIOTHERAPY NUCLEAR MEDICINE COMPUTED TOMOGRAPHY DENTAL RADIOLOGY CONVENTIONAL RADIOLOGY FLUOROSCOPY-GUIDED INTERVENTIONAL PRACTICES 4 237 205 96 28 10 78 THE FRENCH NUCLEAR SAFETY AUTHORITY Out of scale Level 0 Level 1 Level 2 106 significant events in external beam radiotherapy and brachytherapy according to the rating on the ASN-SFRO scale 7 51 34 14 ASN REPORT ON THE STATE OF NUCLEAR SAFETY AND RADIATION PROTECTION IN FRANCE IN 2023
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