caa a22 4500 606150870 CHVBK 20210128100541.0 cr unu---uuuuu 210128e20150601xx s 000 0 eng 10.1007/s10512-015-9963-z doi (NATIONALLICENCE)springer-10.1007/s10512-015-9963-z Investigation of Experimental Dispersion Fuel Elements with an Aluminum-Based Matrix for High-Flux Research Reactors [Elektronische Daten] [I. Gil'mutdinov, V. Shishin, V. Starkov, V. Fedoseev, A. Izhutov, A. Kozlov, A. Morozov] A variant of experimental dispersion fuel elements with fuel based on uranium dioxide as fissile material in a silumin matrix, which have been proposed for modernizing the core of the SM reactor and are irradiated in a wide spectrum of neutron-physical and thermophysical parameters in the reflector channel of the reactor, is investigated. A nonuniformity with fuel density two times higher than the average over a fuel element, viz., a cluster of uranium dioxide particles in the central zone of the kernel, has been found in the distribution of the fuel phase in the fuel elements. The thermophysical calculations show that for such a distribution of fuel particles the temperature of the fuel composition with heat flux density from the fuel-element surface >6 MW/m2 can reach the melting temperature of the matrix. This is confirmed by investigations of fuel elements with appreciably larger volume and shape change. To increase the serviceability of the fuel elements, ways of improving their design and the material composition of the fuel mix are proposed. Springer Science+Business Media New York, 2015 Gil'mutdinov I. State Science Center - Research Institute for Atomic Reactors (GNTs NIIAR), Dimitrovgrad, Russia aut Shishin V. State Science Center - Research Institute for Atomic Reactors (GNTs NIIAR), Dimitrovgrad, Russia aut Starkov V. State Science Center - Research Institute for Atomic Reactors (GNTs NIIAR), Dimitrovgrad, Russia aut Fedoseev V. State Science Center - Research Institute for Atomic Reactors (GNTs NIIAR), Dimitrovgrad, Russia aut Izhutov A. State Science Center - Research Institute for Atomic Reactors (GNTs NIIAR), Dimitrovgrad, Russia aut Kozlov A. Bochvar All-Russia Research Institute for Inorganic Materials (VNIINM), Moscow, Russia aut Morozov A. Bochvar All-Russia Research Institute for Inorganic Materials (VNIINM), Moscow, Russia aut Atomic Energy Springer US; http://www.springer-ny.com 118/2(2015-06-01), 101-107 1063-4258 118:2<101 2015 118 10512 https://doi.org/10.1007/s10512-015-9963-z text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10512-015-9963-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gil'mutdinov I. State Science Center - Research Institute for Atomic Reactors (GNTs NIIAR), Dimitrovgrad, Russia aut NATIONALLICENCE 700 1- Shishin V. State Science Center - Research Institute for Atomic Reactors (GNTs NIIAR), Dimitrovgrad, Russia aut NATIONALLICENCE 700 1- Starkov V. State Science Center - Research Institute for Atomic Reactors (GNTs NIIAR), Dimitrovgrad, Russia aut NATIONALLICENCE 700 1- Fedoseev V. State Science Center - Research Institute for Atomic Reactors (GNTs NIIAR), Dimitrovgrad, Russia aut NATIONALLICENCE 700 1- Izhutov A. State Science Center - Research Institute for Atomic Reactors (GNTs NIIAR), Dimitrovgrad, Russia aut NATIONALLICENCE 700 1- Kozlov A. Bochvar All-Russia Research Institute for Inorganic Materials (VNIINM), Moscow, Russia aut NATIONALLICENCE 700 1- Morozov A. Bochvar All-Russia Research Institute for Inorganic Materials (VNIINM), Moscow, Russia aut NATIONALLICENCE 773 0- Atomic Energy Springer US; http://www.springer-ny.com 118/2(2015-06-01), 101-107 1063-4258 118:2<101 2015 118 10512