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The methodology of radioecological assessment was developed for radionuclides permissible levels in sea waters. The control concentrations were calculated under the following conditions: exposure from consumption of marine foodstuffs should not exceed 10 % of the permissible dose limit. Radiation doses to marine biota of lower than 1 % of the lethal dose or significant dose of chronic exposure are assumed not to lead to a significant impact on populations or communities. Hygienic criteria are more rigid than radioecological ones for most radionuclides. Real concentrations of radionuclides (90Sr, 137 Cs, 239 Pu, 240 Pu and some others) in sea water are 103-104 times lower than control concentrations. The proposed control concentrations of radionuclides in sea water, ensuring the radiation safety of the population, ensure the radiation safety of marine flora and fauna as well.

Methodology for radioecological assessment of radionuclides permissible levels in the seas - protection of human and marine biota