As at 31 December 2021, SievertPN had transmitted to Siseri all the flight crew doses for 13 airlines having subscribed to the system, giving a total of 20,390 flight crew members monitored by this system. In 2021, nearly 49% of the individual annual doses were below 1 mSv and 51% of the individual annual doses were between 1 mSv and 5 mSv. The maximum individual annual dose was 3.98 mSv. The collective does in 2021 is stable with respect to 2020, whereas it had dropped by 58% between 2019 and 2020 and had been increasing regularly in the preceding years. This stabilisation can be explained by the Covid-19 pandemic which led to a significant drop in air traffic, not compensated in 2021. 3.2 Doses received by the population 3.2.1 Exposure of the population as a result of nuclear activities The automated monitoring networks managed nationwide by IRSN (Téléray, Hydrotéléray and Téléhydro networks) offer real-time monitoring of environmental radioactivity and can highlight any abnormal variation. In the case of an accident or incident leading to the release of radioactive substances, these measurement networks would play an essential role by providing data to inform the decisions to be taken by the authorities and to inform the population. In normal situations, they contribute to the evaluation of the impact of BNIs (see chapter 3). TABLE Monitoring of external exposure of workers in the civil nuclear field (year 2021) NUMBER OF PERSONS MONITORED COLLECTIVE DOSE (man.Sv(*)) INDIVIDUAL DOSE > 20 mSv Reactors and energy production (EDF) 23,875 6.76 0 “Fuel cycle”; decommissioning 12,582 3.8 0 Transport 610 0.077 0 Logistics and maintenance (contractors) 32,702 31.26 0 Effluents, waste 800 0.12 0 Others 7,120 1.57 0 Total civil nuclear 77,689 43.59 0 * Man-Sv: unit of quantity of collective dose. For information, the collective dose is the sum of the individual doses received by a given group of persons. (Source: Worker radiation protection: occupational exposure to ionising radiation in France, IRSN 2021 report, June 2022) TABLE Monitoring of external exposure of workers in small-scale nuclear activities (year 2021) NUMBER OF PERSONS MONITORED COLLECTIVE DOSE (man.Sv(*)) INDIVIDUAL DOSE > 20 mSv Medicine 164,522 7.67 1 (1) Dental 46,200 1.61 0 Veterinary 23,562 0.54 0 Industry 16,670 2.77 0 Research and education 10,854 0.31 0 Natural (**) 21,424 22.63 0 Total small-scale nuclear activities 283,232 35.53 1 (1) This case was retained by default, as the occupational physician gave no feedback on the conclusions of the investigation. * Man-Sv: unit of quantity of collective dose. ** “ Natural covers flight crew and workers exposed to natural radionuclides of the uranium and thorium decay chains. (Source: Worker radiation protection: occupational exposure to ionising radiation in France, IRSN 2021 report, June 2022) TABLE Development of number of persons monitored and average collective and individual doses in the exposed population from 2015 to 2021(*) in all areas combined (A) and in the “natural” area (B) YEAR NUMBER OF PERSONS MONITORED COLLECTIVE DOSE (man.Sv) AVERAGE INDIVIDUAL DOSE (mSv) (A) (B) (A) (B) (A) (B) 2015 (*) 372,881 352,641 104.41 65.61 0.98 0.76 2016 (*) 378,304 357,527 107.53 66.71 0.96 0.73 2017 384,198 360,694 100.58 53.52 1.03 0.72 2018 390,363 365,980 104.14 55.24 1.12 0.80 2019 395,040 369,712 112.31 58.73 1.20 0.85 2020 387,452 364,614 72.43 49.97 0.78 0.71 2021 392,180 370,756 82.71 60.09 0.85 0.78 * For comparison purposes, the results for 2015 and 2016 have been retroactively reassessed applying the new methodological approach. (Source: Worker radiation protection: occupational exposure to ionising radiation in France, IRSN 2021 report, June 2022) 1 2 3 110 ASN Report on the state of nuclear safety and radiation protection in France in 2022 • 01 • Nuclear activities: ionising radiation and health and environmental risks 01
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