Patent Number: 8,711,997

Title: Reactor core of liquid metal cooled reactor

Abstract: A reactor core is immersed in a liquid metal coolant in a core barrel of a liquid metal cooled reactor. The reactor core includes a plurality of fuel assemblies contained in the core barrel, a neutron absorber that absorbs a neutron in the reactor core, and a neutron moderator that moderates a neutron therein so as to control a reactivity of the reactor core. The neutron absorber and the neutron moderator constitute a mixture contained in reactivity control assemblies of the reactor core in the liquid metal coolant prior to immersion of the reactor core. The neutron moderator is composed of zirconium hydride.

Inventors: Yokoyama; Tsugio (Yokohama, JP), Matsumiya; Hisato (Yokohama, JP), Tsuboi; Yasushi (Yokohama, JP)

Assignee: Kabushiki Kaisha Toshiba

International Classification: G21C 7/06 (20060101); G21C 7/00 (20060101)

Expiration Date: 4/29/12018