FIELD: energy.
SUBSTANCE: at least one of the guide channels of the nuclear reactor fuel assembly is perforated. Perforation in the guide channel can be performed both above the upper spacer grid, as well as above the upper spacer grid and between the two upper spacer grids.
EFFECT: creation of a fuel assembly, in which there is provided a possibility of installation of an in-core detectors assembly in the guide channel, which increases representativity of measurements of average-composite temperature at the outlet of fuel assemblies and improves the safety of nuclear fuel use.
2 cl, 4 dwg
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