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Information × Registration Number 0221U106802, 0120U101709 , R & D reports Title Researches of physical and chemical processes in the lava-like fuel-containing materials of complex the 'New Safe Confinement - Shelter Object' by electrokinetic methods popup.stage_title Head Gabielkov Sergii V., Доктор фізико-математичних наук Registration Date 21-12-2021 Organization Institute for Safety Problems of Nuclear Power Plants of the National Academy of Sciences of Ukraine popup.description2 Developed and manufactured laboratory installation for the study of electrokinetic processes in the pore space of lava-like fuel-containing materials (LFCM) Shelter Object. The main node is an electrochemical cell, which generates reagents that redistribute uranium (fission and activation products) from inclusions in the pore space of LFCM. Three applications for the invention (one for the method, two for the utility model) were submitted to protect the developed technical solutions. The optimal parameters of electrokinetic processes in the pore space of the LFCM sample with dimensions of approximately 2 x 2 x 2 mm were selected. It has been experimentally shown that the radionuclides cesium 137Cs, americium 241Am, and uranium 235U entered the catholyte (electrolyte) through the pore space of LFCM from a sample of brown ceramics. The studies used the electrochemical activation method for dissolving and precipitating uranium compounds, the method of filling the pores of liquids with liquid under vacuum, X-ray phase analysis, electron microscopy, chronoamperometry, spectral analysis, calculation methods. An adapted model of electrokinetic processes in the pore space of LFCM has been created. The model allows to improve the quality of understanding of electrokinetic processes and is the basis for creating a new methodological approach to LFCM conditioning technology. The results of the research were implemented at the Chernobyl NPP for use in the development of Reports on the safety of the Shelter and the New Safe Confinement and the development of new technologies for the management of high-level radioactive waste, in the educational process for postgraduate training at the SI “Institute of Environmental Geochemistry of the National Academy of Sciences of Ukraine” in the legislative activity of the National Commission for Radiation Protection of the Population of Ukraine under the Verkhovna Rada of Ukraine. Product Description popup.authors Dolin Viktor Volodymyrovych Zhyganiuk Igor Viktorovych Zubko Oleksandr Viktorovych popup.nrat_date 2021-12-21 Close