FIELD: physics, nuclear physics.
SUBSTANCE: fuel element is used in power reactors of low capacity on thermal neutrons to increase reliability and energy production. Nuclear reactor fuel element comprises shell with end plugs, core in the form of nuclear fuel particles distributed in matrix, compensator installed inside shell in the area of fuel element active part with the help of spacer component, compensator is arranged with the area of cross section in the range from 0.1 to 0.3 of fuel element cross section area, nuclear fuel particles are made in the form of granules from uranium dioxide with size from 0.2 to 1.0 mm and porosity from 3 to 6%, uranium density in core is specified from 5.5 to 6.5 g/cm3, total mass of uranium in fuel element is specified from 100 to 210 g, compensator is made from thin-walled tight gas-filled tube, compensator cross section is made in the form of cross with two axes of symmetry and rounded ribs and cavities.
EFFECT: higher reliability and increased power production.
3 cl, 2 dwg
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