man-made contaminationRadioecological Monitoring and its Role in Ensuring Safety of Nuclear Power Plants 12/08/2021 2021 - #04 Nuclear power plants Fesenko S.V. Sanzharova N.I. Karpenko E.I. Isamov N.N. Kuznetsov V.K. Panov A.V. Tsygvintsev P.N.