Lower support for a nuclear reactor core.

摘要

The lower support of a nuclear reactor core, intended to support each of the combustible assemblies of the core and to distribute the primary cooling fluid through said assemblies. The support is comprised of a first thick plate (7), supporting the combustible assemblies (9) and drilled, facing each assembly (9), with vertical channels (8) intended for the primary fluid flow, and a second thin plate (13), drilled with ports (16), fixed under the first plate (7), and positioned so that each port (16) is located opposite one of the channels (8), each of the channels (8) being open to at least one port (16). Application to nuclear reactors cooled by light water, particularly to those which are used for the production of electric power or for naval propulsion.