GUIDING DEVICE OF NUCLEAR REACTOR CORE MELT LOCALIZATION AND COOLING SYSTEM Russian patent published in 2020 - IPC G21C9/16 

FIELD: physics.

SUBSTANCE: invention relates to a localized and cooled melt system of nuclear reactor core intended for localization of severe beyond beyond-design accidents, in particular, to device for melt transfer of nuclear reactor core into melt trap. Guide device of nuclear reactor core melt localization and cooling system installed under reactor housing and resting on cantilever truss comprises cylindrical part, conical part with hole made in it, walls of which are coated with heat-resistant and low-melting material and are divided into sectors with power ribs located radially relative to hole. Also provided is a power frame consisting of an outer upper power ring, an outer lower power ring, an inner power shell, an outer upper power shell, medium power shell, divided into sectors by power ribs, outer lower power shell, support ribs, base, upper inclined plate connecting conical bottom, power ribs and medium power shell, lower inclined plate connecting conical bottom, power ribs, middle power shell and outer top power shell.

EFFECT: high efficiency of localising and cooling melt of nuclear reactor core due to elimination of failure of guide device due to concentration of impact load in conical part of guide device and single-time ingress of core, fragments of internal devices and bottom of housing of nuclear reactor into melt trap.

3 cl, 4 dwg