Updated: 2025-12-28
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0225U005206, (0121U108949) , R & D reports
Research to substantiate the use of nuclear fuel cycles for reactors that are considered in the structure of nuclear energy of Ukraine
Проект активної зони малого модульного реактора. Розробки і дослідження в обґрунтування працездатності ТВЗ з твелами, спорядженими керамічними таблетками підвищеної щільності та таблетками перспективних дисперсійних композицій для дослідницьких і модульних ядерних установок.
Krasnorutskyi Volodymyr S., Кандидат фізико-математичних наук
27-12-2025
National Science Center "Kharkiv Institute of Physics and Technology"
Complex problems of development of nuclear technologies and nuclear energy include a number of specific physical and materials science tasks in substantiation of operation of existing elements of nuclear installations, design and technological developments of perspective elements of active zones, experimental and computational developments on designing active zones with improved fuel cycles. neutron-physical and economic indicators and justification of their application for of reactors of Ukraine, substantiation of thermophysical reliability of Westinghouse fuel storage in SSVYAP VP ZNPP, development of reactor models, in-hull devices (VKP) and the active zone WWER-1000 to perform calculations of the fluence of fast neutrons on VKP reactor vessel and energy release in VKP, conducting research for the active zone of a small modular reactor, research and testing to study processes and phenomena occurring in materials at design and design accidents.
The analysis of small modular reactor (SMR) designs and the characteristics of fresh nuclear fuel possible for use in them was conducted. It was shown that the most promising for electricity generation are water-water reactor designs with a capacity of up to 300 MW. Preference is given to projects in which the enrichment of fuel does not exceed 5% in U235. The analysis of pellet designs, fuel assemblies and nuclear fuel characteristics being developed for experimental reactors and SMR showed that the results obtained from the development of small reactors, including experimental nuclear facilities, can be the basis for the development of fuel and PELs for specific reactors. According to the characteristics of nuclear fuel, it is shown that the most promising is oxide fuel of the pellet type, improved by increasing the density and obtaining a coarse-grained structure due to the introduction of alloying additives. Technological operations for the manufacture of pellet fuel UO2+Сr2O2, UO2–Al, UO2+Gd2O3 have been worked out. It is shown that the creation of a structural state of the material of pellets with a grain size of not less than 20 μm and a density and porosity ratio within 94±1% and 6±1%, respectively, ensures radiation resistance of the material to swelling during burnup up to 50 MW×day/kt. Another promising direction is the creation of fuel dispersion compositions. Technological processes for the manufacture of UO2–Al dispersion compositions with a density of up to 93% have been developed. The physical design of the active zone (AS) of the water-water type MMR has been carried out. The results of the preliminary analysis were taken into account in the physical design of the AS of the water-water type MMR. The physical design was developed on the basis of solutions tested in VVER, PWR reactors and can be used in the creation of designs of specific reactors with specified operating parameters.
Serhii L. Bondarenko
Volodymyr O. Vysotskyi
Ihor O. Chernov
Valerii A. Zuiok
Albert D. Dzhamirzoiev
Mykola V. Pasko
Olha S. Kirsanova
Hanna Р. Riedkina
Volodymyr V. Hann
Volodymyr Z. Baidulin
Vitalii P. Chernukha
Fedor A. Pasenov
Serhii P. Svyrydenko
Volodymyr M. Yevseiev
Volodymyr V. Vorozhko
Mykhailo V. Mukhin
Serhii V. Pushkin
Maksym A. Semenov
Anton V. Kushtim
Volodymyr O. Puzik
Mykola O. Lavrentiev
Yuliia O. Hordiienko
Vadym V. Hrudnytskyi
Yana O. Kushtym
Viktor M. Hrytsyna
Oleh I. Hamov
Olena O. Slabospytska
Valerii A. Dolhii
Volodymyr S. Krasnorutskyi
Volodymyr V. Zihunov
Oleksandr I. Zhukov
Serhii P. Klymenko
Serhii A. Soldatov
Roman O. Rud
Natalia V. Rud
Mykhailo V. Tretiakov
Ivan V. Dykyi
Viktor O. Romankov
Ihor V. Shevchenko
Anatolii K. Semenov
Yehor S. Lehenkyi
Oleksandr V. Pylypenko
Olena S. Zorchenko
Andrii V. Kantemirov
Yurii P. Prokhorenko
Mariia V. Starolat
Mykhailo V. Kisil
2025-12-27
Updated: 2025-12-28
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