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Information × Registration Number 0221U107038, 0119U101834 , R & D reports Title Modeling of spatial distributions of radiation fields in the materials of radiation protection containers for research on radiation-induced damages in the long-term storage of radioactive wastes popup.stage_title Head Rudychev Ye. V., Кандидат фізико-математичних наук Registration Date 26-12-2021 Organization National Science Center "Kharkiv Institute of Physics and Technology" popup.description2  With the help of the modeling complex developed by us, reliable modeling of radiation radiation was performed and the spatial distribution of radiation damage inside the ultrasonic container was calculated taking into account the heterogeneity of materials and geometry features in three-dimensional space. Peculiarities of concrete properties used as construction materials for universal ferroconcrete UZZK container are determined and factors influencing the properties of protective container during long-term storage of radwaste, including spent fuel, LRW and SRW are analyzed. It is shown that neutrons make the main contribution to the formation of radiation damage, despite their significantly lower flux in radwaste or spent fuel. It is shown that the distribution of displacements per atom differs from the distribution of absorbed energy due to the fact that the effects of radiation damage have a threshold for the energy of formation. It is shown that the total distribution of radiation damage in our selected regions "A", "B" and "C" is more uniform due to the compensation of the amount of radiation damage in the respective regions by gamma quanta and neutrons. However, due to the fact that the level of radiation damage for neutrons is higher than for gamma quanta, a heterogeneous structure of radiation damage was found, which corresponds to the heterogeneous structure of ultrasonic material. It is shown that when using special concrete as an ultrasonic material, we have a higher density of radiation damage for special concrete and the average level of radiation damage is 1.547 times higher than for ordinary concrete. It has been shown that ultrasonic storage of radwaste is guaranteed for 100 years, and for longer-term storage of radwaste, including spent fuel, LRW and SRW, recommendations for ensuring durability and radiation resistance have been identified. Product Description popup.authors popup.nrat_date 2022-03-09 Close