TABLE Examples of radiological monitoring of the environment around BNIs ENVIRONMENT MONITORED OR TYPE OF INSPECTION CATTENOM NPP (ASN RESOLUTION 2014‑DC‑0415 OF 16 JANUARY 2014) ORANO LA HAGUE FACILITY (ASN RESOLUTION 2015‑DC‑0535 OF 22 DECEMBER 2015) Air at ground level • 4 stations continuously sampling atmospheric dust on a fixed filter with daily measurements of total β activity (βG): ‒ γ spectrometry if βG > 2 mBq/m3 ‒ Monthly γ spectrometry on groups of filters per station • 1 continuous sampling station downwind of the prevailing winds, with weekly measurement of atmospheric 3H • 5 stations continuously sampling atmospheric dust on a fixed filter, with daily measurements of the total α activity (αG) and total β activity (βG): ‒ γ spectrometry if αG or βG > 1 mBq/m3 ‒ Monthly α (Pu) spectrometry on grouped filters per station • 5 continuous sampling stations for halogens on specific adsorbent with weekly γ spectrometry to measure iodines • 5 continuous sampling stations with weekly measurement of atmospheric 3H • 5 continuous sampling stations with bi-monthly measurement of atmospheric 14C • 5 continuous measurement stations for 85Kr activity in the air Ambient γ radiation • Continuous measurement with recording: ‒ 4 detectors at 1 km ‒ 10 detectors on the site boundary ‒ 4 detectors at 5 km • 5 detectors with continuous measurement and recording • 11 detectors with continuous measurement at the site fencing Rain • 1 continuous sampling station under the prevailing winds with bi-monthly measurement of βG and 3H • 2 continuous sampling stations including one under the prevailing winds with weekly measurement of αG, βG and 3H: ‒ γ spectrometry if significant αG or βG Environment receiving liquid discharge • Sampling from the river upstream of the discharge point and in the good mixing area for each discharge: ‒ Measurement of βG, potassium (K)(*) and 3H • Continuous sampling in the river at the good mixing point: ‒ 3H measurement (average daily mixture) • Annual sampling in aquatic sediments, fauna and flora upstream and downstream of the discharge point with γ spectrometry, free 3H measurement and, on fish, organically bound 14C and 3H • Periodic sampling from a stream and in the dam adjoining the site with measurements of βG, K, 3H • Daily seawater samples from 2 points on the coast, with daily measurements (γ spectrometry, 3H) at one of these points and for each of the 2 points, α and γ spectrometry and βG, K, 3H and 90Sr measurements • Quarterly seawater samples at 3 points offshore with γ spectrometry and βG, K, 3H measurements • Quarterly samples of beach sand, seaweed and limpets at 13 points with γ spectrometry + 14C measurements and α spectrometry for the seaweed and limpets at 6 points • Sampling of fish, crustaceans, shellfish and molluscs in 3 coastal zones of the Cotentin with α and γ spectrometry and 14C measurement • Quarterly sampling of offshore marine sediments at 8 points with α and γ spectrometry and 90Sr measurement • Weekly to six-monthly samples of water from 19 streams around the site, with αG, βG, K and 3H measurements • Quarterly sampling of sediments from the 4 main streams adjacent to the site, with γ and α spectrometry • Quarterly samples of aquatic plants in 3 streams in the vicinity of the site with γ spectrometry and 3H measurement Groundwater • Monthly sampling at 4 points, bi-monthly at 1 point and quarterly at 4 points with βg, K and 3H measurement • 5 sampling points (monthly check) with αG, βG, K and 3H measurement Water for consumption • Annual sampling of water intended for human consumption, with βG, K and 3H measurements • Periodic sampling of water intended for human consumption at 15 points, with αG, βG, K and 3H measurements Soil • 1 annual sample of the topsoil with γ spectrometry • Quarterly samples at 7 points with γ spectrometry and 14C measurement Vegetation • 2 grass sampling points, including one under the prevailing winds, monthly γ spectrometry and quarterly 14C and C measurements • Annual campaign for the main agricultural crops, with γ spectrometry, 3H and 14C measurements • Monthly grass sampling at 5 points and quarterly at 5 other points with γ spectrometry and 3H and 14C measurements ‒ Annual α spectrometry at each point • Annual campaign for the main agricultural crops, with α and γ spectrometry, 3H, 14C and 90Sr measurements Milk • 2 sampling points situated at 0 to 10 km from the installation, including one under the prevailing winds, with monthly γ spectrometry, quarterly 14C measurement and annual 90Sr and 3H measurement • 5 sampling points (monthly check) with γ spectrometry, K, 3H, 14C and 90Sr measurement αG = α total; βG = β total * Measurements of total concentration of potassium by spectrometry for 40K. 7 ASN Report on the state of nuclear safety and radiation protection in France in 2022 163 • 03 • Regulation of nuclear activities and exposure to ionising radiation 01 03 07 08 13 AP 04 10 06 12 14 09 05 11 02
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