Abstracts ASN Report 2019

ňŅŇĻĸŅŀłŅĸё ӆёӇӌӅׇŊłŅľĸŅņ ŊĸŅĸ ņňĵĽĸĶŇ Ňł ŀłŁļŇłŅļŁĺ łĹ ĿĸŁņ of the eye exposure. This represents an increase in monitoring of nearly 40% compared with 2017. This significant increase is linked to the arrival on the market of several new dosimeters ņňļŇĸķ Ňł ŇĻļņ ŇŌŃĸ łĹ ŀĸĴņňŅĸŀĸŁŇє łňŅ ŊłŅľĸŅņ ŅĸĶĸļʼnĸķ ĴŁ ĸńňļʼnĴĿĸŁŇ ķłņĸ ĸŋĶĸĸķļŁĺ ӅӃׇŀ ʼnє Ļĸ ŀĴŋļŀňŀ ŅĸĶłŅķĸķ ķłņĸ ļņ ӈӆєӇׇŀ ʼn ĴŁķ ĶłŁĶĸŅŁņ ŇĻĸ ŅĴķļłĿłĺŌ ņĸĶŇłŅє Ļļņ ʼnĴĿňĸ ņĻłňĿķ be compared with the new regulatory dose limit for the lens of the ĸŌĸѓ ĶňŀňĿĴŇļʼnĸ ʼnĴĿňĸ łĹ ӄӃӃ ŀ ʼn łʼnĸŅ ӈׇŌĸĴŅņё ŊļŇĻłňŇ ĸŋĶĸĸķļŁĺ 50 mSv in a given year (20 mSv/year as from 2023). To conclude, as in the preceding years, the results of dosimetric ŀłŁļŇłŅļŁĺ łĹ ŊłŅľĸŅ ĸŋŇĸŅŁĴĿ ĸŋŃłņňŅĸ ļŁ ӅӃӄӋׇŃňĵĿļņĻĸķ ĵŌ ļŁ ĸŃŇĸŀĵĸŅ ӅӃӄӌׇņĻłŊ łŁ ŇĻĸ ŊĻłĿĸ ŇĻĴŇ ŇĻĸ ŃŅĸʼnĸŁŇļłŁ system introduced in facilities where sources of ionising radiation ĴŅĸ ňņĸķ ļņ ĸĹĹĸĶŇļʼnĸ ĵĸĶĴňņĸё ĹłŅ ӌӉՌ łĹ ŇĻĸ ŃłŃňĿĴŇļłŁ ŀłŁļŇłŅĸķё the annual dose remained lower than 1 mSv (effective annual dose limit for the public as a result of nuclear activities). Although there is an increase in the number of cases where the regulatory ĿļŀļŇ ʼnĴĿňĸņ ĴŅĸ ĸŋĶĸĸķĸķ ҎӄӃׇĶĴņĸņ ĸŋĶĸĸķļŁĺ ŇĻĸ ĴŁŁňĴĿ ĿļŀļŇ łĹ 20 mSv), they remain the exception. Monitoring of exposure of the lens of the eye with, for this tissue, compliance with the new limit, constitutes the main objective of radiation protection in the immediate years and more specifically in the area of fluoroscopy- guided interventional medical practices. ב ِ׏ِ א áȒȸǸƺȸ ƺɴȵȒɀɖȸƺ ɎȒ ÁƺƬǝȇȒǼȒǕǣƬƏǼǼɵ 0ȇǝƏȇƬƺƳ zƏɎɖȸƏǼǼɵ…ƬƬɖȸȸǣȇǕ «ƏƳǣƏɎǣȒȇ ƏȇƳ ɎȒ ȸƏƳȒȇ Ȓǔ ǕƺȒǼȒǕǣƬƏǼ ȒȸǣǕǣȇ Occupational exposure to Technologically Enhanced Naturally Occurring Radiation (TENOR) is the result either of the ingestion of dust from materials containing large amounts of radionuclides (phosphates, metal ore), or of the inhalation of radon formed by uranium decay (poorly ventilated warehouses, thermal baths) or of external exposure due to process deposits (scale forming in piping, for example). Ļĸ ŅĸņňĿŇņ łĹ ņŇňķļĸņ ĶĴŅŅļĸķ łňŇ ļŁ ŅĴŁĶĸ ĹŅłŀ ӅӃӃӈׇňŁŇļĿ ŇĻĸļŅ publication by ASN in January 2010, along with the more recent ņŇňķļĸņё ņĻłŊ ŇĻĴŇ ӋӈՌ łĹ ŇĻĸ ķłņĸņ ŅĸĶĸļʼnĸķ ĵŌ ŊłŅľĸŅņ ļŁ ŇĻĸ ļŁķňņŇŅļĸņ ĶłŁĶĸŅŁĸķ ŅĸŀĴļŁĸķ ĵĸĿłŊ ӄׇŀ ʼnѼŌĸĴŅє Ļĸ ļŁķňņŇŅļĴĿ sectors in which worker exposure is liable to exceed 1mSv/year are the following: titanium ore processing, heating systems and recycling of refractory ceramics, maintenance of parts comprising thorium alloys in the aeronautical sector, chemical processing of ōļŅĶłŁ łŅĸё ŀĸĶĻĴŁļĶĴĿ ŇŅĴŁņĹłŅŀĴŇļłŁ ĴŁķ ňŇļĿļņĴŇļłŁ łĹ ōļŅĶłŁ and processing of rare earths. The trends observed and published ļŁ ӅӃӄӃׇĴŅĸ ņŇļĿĿ ʼnĴĿļķ ļŁ ʼnļĸŊ łĹ ŇĻĸ ĹļĿĸņ ŅĸĶĸļʼnĸķ ňŃ Ňł ӅӃӄӋє With regard to exposure to radon of geological origin, the results from monitoring the exposure of workers to radon have not yet been exhaustively recorded in Siseri. Consequently, not all the companies whose premises have a radon activity concentration in the air that makes individual monitoring necessary are included ļŁ ŇĻĸ ӅӃӄӋׇŅĸŃłŅŇ ŃňĵĿļņĻĸķ ļŁ ĸŃŇĸŀĵĸŅ ӅӃӄӌє ב ِ׏ِ ב IǼǣǕǝɎ Ƭȸƺɯ ƺɴȵȒɀɖȸƺ ɎȒ ƬȒɀȅǣƬ ȸƏƳǣƏɎǣȒȇ Airline flight crews and certain frequent flyers are exposed to significant doses owing to the altitude and the intensity of cosmic radiation at high altitude. These doses can exceed 1 mSv/year. ļŁĶĸ ӄׇ ňĿŌ ӅӃӄӇё ŇĻĸ ķĴŇĸ łĹ ĸŁŇŅŌ ļŁŇł ĸĹĹĸĶŇ łĹ ŇĻĸ ŅķĸŅ łĹ ӄӊׇ ňĿŌ ӅӃӄӆ ŅĸĿĴŇļʼnĸ Ňł ŇĻĸ ŀĸķļĶĴĿ ĴŁķ ķłņļŀĸŇŅļĶ ŀłŁļŇłŅļŁĺ card for workers exposed to ionising radiation, the Sievert system for calculating the cosmic radiation doses received by flight crews during a flight ( sievert-system.org ) –system put in place by the General Directorate for Civil Aviation (DGAC), IRSN, the ĴŅļņ ĵņĸŅʼnĴŇłŅŌ ĴŁķ ŇĻĸ ŅĸŁĶĻ ŁņŇļŇňŇĸ ĹłŅ łĿĴŅ ĸņĸĴŅĶĻ Paul-Émile Victor– has been changed. It is IRSN that calculates the individual doses with the SievertPN application on the basis of the flight and personnel presence data provided by the airlines. Ļĸņĸ ķĴŇĴ ĴŅĸ ņňĵņĸńňĸŁŇĿŌ ŇŅĴŁņŀļŇŇĸķ Ňł ļņĸŅļё ŇĻĸ ŅĸŁĶĻ national worker dosimetry registry. ņ ĴŇ ӆӄׇ ĸĶĸŀĵĸŅ ӅӃӄӋё ļĸʼnĸŅŇ ĻĴķ ņĸŁŇ ļņĸŅļ ĴĿĿ ŇĻĸ ĹĿļĺĻŇ ĶŅĸŊ ķłņĸņ ĹłŅ ӄӆׇĴļŅĿļŁĸņ ĻĴʼnļŁĺ ņňĵņĶŅļĵĸķ Ňł ŇĻĸ ņŌņŇĸŀё ĺļʼnļŁĺ Ĵ ŇłŇĴĿ łĹ ӅӆёӆӈӉׇĹĿļĺĻŇ ĶŅĸŊ ŀĸŀĵĸŅņ ŀłŁļŇłŅĸķ ĵŌ ŇĻļņ ņŌņŇĸŀє Ł ӅӃӄӋё ӄӌՌ łĹ ŇĻĸ ļŁķļʼnļķňĴĿ ĴŁŁňĴĿ ķłņĸņ ŊĸŅĸ ĵĸĿłŊ ӄ ŀ ʼn ĴŁķ ӋӃՌ łĹ ŇĻĸ ļŁķļʼnļķňĴĿ ĴŁŁňĴĿ ķłņĸņ ŊĸŅĸ ĵĸŇŊĸĸŁ ӄ ŀ ʼn ĴŁķ ӈ ŀ ʼnє Ļĸ ŀĴŋļŀňŀ ŃĸŅŀļŇŇĸķ ļŁķļʼnļķňĴĿ ĴŁŁňĴĿ ķłņĸ ļņ ӈєӌׇŀ ʼnє Sources and routes of exposure to ionising radiation Inhalation External irradiation Skin contamination External irradiation Internal contamination by inhalation of radioactive substances Skin contamination Ingestion External irradiation Skin contamination voluntary ingestion and in External irradiation Internal contamination through ingestion of contaminated foodstuffs Skin contamination and involuntary ingestion 106 ASN Report on the state of nuclear safety and radiation protection in France in 2019 ׎׏ ٲ NUCLEAR ACTIVITIES: IONISING RADIATION AND HEALTH AND ENVIRONMENTAL RISKS