ASN Report 2022

111 THE FRENCH NUCLEAR SAFETY AUTHORITY NUMBER OF SIGNIFICANT EVENTS IN THE MEDICAL FIELD (*) NUMBER OF SIGNIFICANT EVENTS RATED ON THE INES SCALE (*) 1,082 events in the Basic Nuclear Installations 985 97 88 events in the transport of radioactive substances 76 12 202 events in small-scale nuclear activities (medical and industrial) 162 1 39 Level 0 Level 1 Level 2 619 significant events per area of exposure 117 significant events in external beam radiotherapy and brachytherapy according to the ASN-SFRO scale Brachytherapy External radiotherapy Nuclear medicine Computed tomography Conventional and dental radiology Fluoroscopy-guided interventional practices 67 219 191 6 25 * The INES scale (International Nuclear and Radiological Event Scale) was developed by 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. Out of scale Level 0 Level 1 Level 2 Level 3 4 KEY FIGURES 2022 73 24 16 ASN REPORT ON THE STATE OF NUCLEAR SAFETY AND RADIATION PROTECTION IN FRANCE IN 2022