Kabushiki Kaisha Toshiba

Katsushi Hasegawa

Takanari Inatomi

Hiroshi Nakamura

Kazuhiro Watanabe

Toshiyuki Suzuki

Yasushi Tsuboi

Toshiro Sakai

Hideo Kobayashi

Kenjiro Fukamichi

Makoto Kuramochi

Ayano Ebihara

A fast reactorincludes: a reactor vesselaccommodating therein a coreand a primary coolant; a core supportsupporting the corefrom below; and a bulkheaddisposed on the core support, the bulkheadextending upward and surrounding the corefrom a lateral side. Between an inner surface of the reactor vesseland the bulkhead, there is disposed an intermediate heat exchangerconfigured to cool the primary coolant, and an electromagnetic pumpconfigured to pressurize the cooled primary coolant. A neutron shieldsupported by an upper supporting platefrom above is disposed below the electromagnetic pump. The upper supporting platehas an opening. Between an outletof the electromagnetic pumpand the upper supporting plate, there is disposed a coolant guide mechanismconfigured to guide the pressurized primary coolantfrom the electromagnetic pumpto the neutron shield through the openingof the upper supporting plate

Fast reactor

A fast reactor having a reactivity control reflector has a reactor vessel in which a coolant is accommodated, a reactor core which is installed in the reactor vessel and dipped with the coolant, and a reflector installed outside of the reactor core so as to be movable in a vertical direction for controlling the reactivity of the reactor core. The reflector of the fast reactor has a lower neutron reflecting portion having a neutron reflection capability higher than that of the coolant and an upper cavity portion located above the neutron reflecting portion and having a neutron reflection capability lower than that of the coolant. The cavity portion is composed of a plurality of cylindrical hermetically-sealed vessels.

Fast reactor having reactivity control reflector

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Kawasaki, Japan

Katsushi Hasegawa