LABORATORY OF ENVIRONMENTAL RADIOCHEMISTRY AND RADIOECOLOGY

General research lines:

• investigation of available forms and migration behavior of man-caused radionuclides in the environment;
• study of radioecological aftereffects caused by operating of radiation-dangerous facilities;
• ecological support to designs of spent nuclear fuel regeneration productions;
• radioecological problems resulted from natural radionuclides in non-nuclear areas.

The Laboratory carries out researches in cooperation with FSUE "Mining and Chemical Combine (MCC)" (Zheleznogorsk city), FSUE "HI VNIPIET", FSUE "A.N. Krylov CNII", GEOChE RAS, et al.

There are implemented investigations of migration behavior and available forms of man-caused radionuclides, including trans-uranium elements, within the system of Krasnoyarsk Mining and Chemical Combine - Yenisei River - Kara Sea. The processes related to generation of contaminated alluvial sediments in Yenisei River's floodplain have been studied, as well as a role of "hot" particles in these processes.

There is completed the study of distribution of man-caused ⁹⁰Sr, ¹³⁷Cs radionuclides, plutonium isotopes in soils in the area subjected to radiological effect from Krasnoyarsk Mining and Chemical Combine, and exposure doses to the population of this region are evaluated.

They have implemented integrated studies of radioactive contamination with man-caused radionuclides, including trans-uranium elements, ground and floodplain sediments within water system of Yenisei River - Kara Sea.

The Laboratory has prepared the following input data required to assess environmental impact (EIA) from RT-2 Factory to be designed at the site of MCC:

• regarding "background" environmental contamination;
• on prediction of radiological environmental impact from facilities under design.

They have developed recommendations to improve radiological conditions under iodine obtaining from stratal water and at treatment of artesian water for drinking water supply. They have studied the distribution of natural radionuclide impurities in the process cycle of titanium recovery from ilmenites at Bereznikovskiy Titanium and Magnesium Combine and in the run of rare-metal raw material processing at Solikamsk Magnesium Factory. Radioecological factor is evaluated for the process of incineration of civil waste water dehydrated solid sludge at waste water treatment plant (i. Belyi, S.-Petersburg).

рХВМЙЛБГЙЙ

1. Kuznetsov Yu.V., Legin V.K., Shishlov A.E. et al. The Study of Behavior of ^{239, 240}Pu and ¹³⁷Cs Within the System of Yenisei River - Kara Sea. // Radiochemistry. - 1999. - v. 41. - No 2. - p. 181-186.
2. Kuznetsov Yu.V., Legin V.K., Strukov V.N. et al. Trans-uranium Elements in Floodplain Sediments of the Yenisei River. // Radiochemistry. - 2000. - v. 42. - No 5. - p. 470-477.
3. Gritchenko Z.G., Kuznetsov Yu.V., Legin V.K. et al. The Second Class "Hot" Particles in Floodplain Soils of the Yenisei River. // Radiochemistry. - 2001. - v. 43. - No 6. - p. 563-565.
4. Kuznetsov Yu.V., Revenko Yu.A., Legin V.K. et al. For the Assessment of the Yenisei River's Contribution to the Total Radioactive Contamination of the Kara Sea. // Radiochemistry. - 1994. - v. 36. - No 6. - p. 546-553.
5. Kuznetsov Yu.V., Legin V.K., Pospelov Yu. N. Methodology and Results of Studies of Environmental Contamination by Plutonium in Zones of Nuclear Facilities Impact. // "Nuclear materials safety management". - NATO ASI series.- 1998. - v. 20. - p.p. 219-237.
6. Smith - Briggs J., Watterson J., Kuznetsov Yu.V. et al. Evaluation of the Radioactive Pollution of the Territories around Krasnoyarsk - 26. // In: Radiation legacy of the 20th century: Envirnmental restoration, IAEA, TECDOC - 1280, 2002. - p. 171-182.
7. Kuznetsov Yu.V., Legin V.K., Strukov V.N. et al. Investigation of Soil Contamination With Long-lived Man-caused Radionuclides Within 30-km Zone of Krasnoyarsk Mining and Chemical Combine. // The 4-th Russian Conference on a Subject of Radiochemistry. Theses of reports. - Oziorsk city. - 2003. - p. 237-238.
8. Graschenko S.M., Gritchenko Z.G., Shishkunova L.V. Natural Radionuclides Distribution Over the Products of Titanium Fabricating Process Cycle. // Radiochemistry. - 1996. - v. 38. - No 2. - p. 178-182.
9. Graschenko S.M., Gritchenko Z.G., Shishkunova L.V. Natural Radionuclides Distribution Over the Products of Ore-smelting Furnace Dust Cleaning. // Radiochemistry. - 1996. - v. 38. - No 2. - p. 183-184.
10. Graschenko S.M., Gritchenko Z.G., Shishkunova L.V. Natural Radionuclides Distribution in the Run of the Process of Iodine Extraction from Drill Water by Air-Desorption Method. // Radiochemistry. - 1997. - v. 39. - No1. - p. 93-96.
11. Graschenko S.M., Gritchenko Z.G., Shishkunova L.V. The Distribution of Natural Uranium and Thorium Series Radionuclides in the Run of Artesian Water Treatment for Drinking Water Supply. // Radiochemistry. - 1997. - v. 39. - No 5. - p. 476-479.
12. Graschenko S.M. Behaviour of the Natural Radionuclides of Uranium and Thorium Series in Non Nuclear Branch of Production. // 5th Intern. Conf. on Nuclear and Radiochemistry. - Switherland, Pontresina (Sept. 3-8, 2000).- Extended Abstracts . - v. 2. - p. 637-640.