FIELD: power engineering.
SUBSTANCE: invention is related to nuclear industry, in particular, to fuel assemblies of power nuclear reactors of "ВВЭР" type. In spacer grids points of cells welded connection between each other are installed at cells ends at the maximum distance from pins. Each of sectors that make rim of spacer grid is arranged with length that is determined by the formula: L = (S-2·H-2·R)/2·Cos30,° where L - length of sector, mm; S - flat-to-flat dimension of fuel assembly, mm; H - thickness of angular plate, mm; R - internal radius of angular plate bend, mm.
EFFECT: increases fuel assembly campaign time in nuclear reactor.
7 dwg
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