Justification for applying of guide thimbles with hydraulic brake made from E635 alloy for fuel assembly from light water reactors
The guide tube (GT), being an element of the bearing frame of the fuel assembly, must be highly resistant to form change and corrosion during the whole operating life. The aim of this work was to determine reasons for formation and influence of radial orientation of hydrides in the area of dashpot of GT on their performance characteristics and assessment on this basis the possibility of using such tubes in TVSA-T for the VVER-1000 reactor. The report presents results of research into the structure, texture, creep resistance, and corrosion of GT tubes with dashpot, and of the analysis of operation results of GT tubes made of the E635 alloy. On the basis of the investigations, GT tubes with dashpot were recommended for use in TVSA-T of the VVER-1000 reactor.
Keywords
циркониевый сплав Э635, тепловыделяющая сборка, реактор ВВЭР-1000, направляющий канал с гидротормозом, коррозия, ползучесть, микроструктура, состав и размер интерметаллидов, степень рекристаллизации, автоклавные испытания, zirconium alloy E635, fuel assembly, VVER - 1000, guide thimble with dashpot, corrosion, creep, microstructure, composition and size of intermetallic, degree of recrystallization, autoclave testsAuthors
Name | Organization | |
Sablin Michail Nikolaevich | Joint Stock Company A.A. Bochvar High-Technology Research Institute of Inorganic Materials, Moscow | sablin@bochvar.ru |
Nikulina Antonina Vasil'evna | Joint Stock Company A.A. Bochvar High-Technology Research Institute of Inorganic Materials, Moscow | nikulina@bochvar.ru |
Markelov Vladimir Andreevich | Joint Stock Company A.A. Bo-chvar High-Technology Research Institute of Inorganic Materials, Moscow | kalina@bochvar.ru |
Kon'kov Viktor Fedorovich | Joint Stock Company A.A. Bochvar High-Technology Research Institute of Inorganic Materials, Moscow | markelov@bochvar.ru |
Novikov Vladimir Vladimirovich | Joint Stock Company A.A. Bochvar High-Technology Research Institute of Inorganic Materials, Moscow | novikov@bochvar.ru |
Khokhunova Tatiana Nikolaevna | Joint Stock Company A.A. Bochvar High-Technology Research Institute of Inorganic Materials, Moscow | o_mil@bochvar.ru |
References

Justification for applying of guide thimbles with hydraulic brake made from E635 alloy for fuel assembly from light water reactors | Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mekhanika – Tomsk State University Journal of Mathematics and Mechanics. 2014. № 5(31).