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Maxim Vasyanovich,Aleksey Vasilyev,Aleksey Ekidin,Ivan Kapustin,Alexander Kryshev 한국원자력학회 2019 Nuclear Engineering and Technology Vol.51 No.4
Measurements of activity concentrations of radionuclides in atmospheric releases were performed in2017e2018 at vent stacks of seven Russian nuclear power plants. The selected instruments and researchmethods, with detection limits significantly lower than the existing detection limit of Russian NPPsroutine control, allowed to reliably determine up to 26 radionuclides. Analysis of experimental dataallows to determine the list of radionuclides for calculation the effective dose rates to public and thepermissible annual discharge levels for each Russian NPP. Radiocarbon is determined as majorcontributor for the dose from the atmospheric releases of LWGR reactors e up to 98% for EGP-6 andRBMK-1000 (Smolensk NPP) reactors. For PWR reactors (VVER) radionuclides contribution to the annualdose from atmospheric releases is more complicated, but, in general, dose is formed by tritium, 14C andnoble gases. The special monitoring results with ranking of measured radionuclides according to theircontribution to the effective dose makes it possible to optimize the list of controlled radionuclides inairborne releases of Russian NPPs from 94 to 8e16 for different NPPs.
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