Analysis of accumulation factor of

The two-chamber (water and bottom sediments) model was used to analyze factors influencing magnitude of 137Cs accumulation factor in bottom sediments of rivers and lakes with concentration of the radionuclide close to background levels. The most probable values of the factor are given. It is proposed to use the factor for assessments of 137Cs activity in water on the base of its observed activity in bottom sediments

Modelling of transport of radioactive substances from the Siberian Chemical Combine by the Tom and Ob rivers

Observations carried out in the frame of the ISTC project 3547 [1] were used to parametrize and validate the model of radionuclides transport from Siberian Chemical Combine (SCC) by the Tom and Ob rivers and also to assess discharges of radioactive substances from SCC to the Tom River and to estimate possible contamination of the rivers in case of accidents