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Information × Registration Number 0222U003264, 0119U101826 , R & D reports Title Development of power control methods for the perspective fast reactor with a wave of nuclear burning and modeling of materials for nuclear power of the next generation popup.stage_title Head Bakai Oleksandr S., Registration Date 22-02-2022 Organization National Science Center "Kharkiv Institute of Physics and Technology" popup.description2 1. A method has been developed for controlling the power of a promising fast reactor operating in the self-sustaining mode of a nuclear burning wave without intervention into the mobile core of the reactor, but only by changing the efficiency of the radial neutron reflector by adding to its composition a tantalum neutron absorber. Considering a fast reactor with the metallic nuclear fuel of the U-Pu cycle and the Pb-Bi eutectic melt, used both as a coolant and a neutron reflector, we have proved the ability of this technique to control power in a wide range of values, including a forced shutdown with a later restart of the reactor and a safe approach to its equilibrium operation mode. 2. A comparative modeling of the formation of primary radiation defects in disordered equiatomic alloys CoCuFeNi and CoCrFeNi is performed. We demonstrate that the distributions of defect clusters significantly depend not only on the types and number of alloy elements, but also on the symmetry of the crystal lattice. 3. Taking into account glass restructurization, we obtain estimates of the nepheline crystallization rate in glass used for vitrification of radioactive waste. It is shown that in the course of relaxation of the structure, the position of the maximum nucleation rate is shifted towards lower temperatures. Its value grows, practically reaching theoretically expected maximum after one hundred years of relaxation. Product Description popup.authors Abyzov Olexander S Borysenko Oleksandr O. Davydov Leonid M Lazarev Mykola P. Malovytsia Maksym S. Pylypenko Volodymyr V. Turkin Anatoliy A. Fomin Sergii Petrovich popup.nrat_date 2022-03-09 Close