ASN Report 2020

KEY FIGURES IN 2020 NUMBER OF SIGNIFICANT EVENTS IN THE MEDICAL FIELD (*) NUMBER OF SIGNIFICANT EVENTS RATED ON THE INES SCALE (*) 1,142 events in the Basic Nuclear Installations 1,035 105 75 events in the transport of radioactive substances 71 4 160 events in small-scale nuclear facilities (medical and industrial) 135 2 25 Level 0 Level 1 Level 2 532 significant events per area of exposure 134 significant events in external beam radiotherapy and brachytherapy according to the rating on the ASN-SFRO scale Brachytherapy External beam radiotherapy Nuclear medicine Radiography Conventional and dental radiology Fluoroscopy-guided interventional practices Hors échelle Niveau 0 Niveau 1 Niveau 2 73 165 132 124 10 28 * 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 specif ic to radiotherapy events (ASN-SFRO scale). These two scales cover a relatively wide range of radiation protection events, with the exception of imaging events. Off scale Level 0 Level 1 Level 2 Level 3 Hors é Nivea Nivea Nivea Nivea 82 32 14 5 1 THE FRENCH NUCLEAR SAFETY AUTHORITY