公开(公告)号：US20210287811A1

公开(公告)日：2021-09-16

申请号：US17185009

申请日：2021-02-25

申请人： Hitachi-GE Nuclear Energy, Ltd.

发明人： Koji FUJIMURA ,  Kazuhiro FUJIMATA ,  Sho FUCHITA ,  Junichi MIWA

IPC分类号： G21C1/02 ,  G21C1/03 ,  G21C3/28 ,  G21C7/32 ,  G21C7/28

摘要： The invention provides a core of a fast reactor including a sodium plenum installed above a core fuel, which is capable of reliably reducing a void reactivity, and an operation method thereof. The core of a fast reactor including the sodium plenum installed above the core fuel is characterized in that a tip of a primary control rod is inserted into a core fuel region, and a tip of a backup control rod is arranged above an upper end of the core fuel region for operation.

公开(公告)号：US20200343006A1

公开(公告)日：2020-10-29

申请号：US16850829

申请日：2020-04-16

申请人： Hitachi-GE Nuclear Energy, Ltd.

发明人： Koji FUJIMURA ,  Junichi MIWA

IPC分类号： G21C1/02 ,  G21C3/04

摘要： The fuel element of the present invention includes a cladding tube and a metal fuel contained in the cladding tube, in which a gas plenum region is formed above the metal fuel and inside the cladding tube and has a small-diameter portion in the gas plenum region. Further, the fuel assembly of the present invention includes the fuel element of the present invention and a wrapper tube surrounding the fuel element, in which a coolant material passage is formed between the fuel element and the fuel element. Further, the core of the present invention includes an inner core fuel region loaded with the fuel assembly according to the present invention, and an outer core fuel region loaded with the fuel assembly of the present invention.

公开(公告)号：US20190392957A1

公开(公告)日：2019-12-26

申请号：US16447073

申请日：2019-06-20

申请人： Hitachi-GE Nuclear Energy, Ltd.

发明人： Koji FUJIMURA ,  Junichi MIWA

IPC分类号： G21C3/326 ,  G21C1/02 ,  G21C3/60 ,  G21C5/20 ,  G21C7/08 ,  G21C11/06

摘要： There is provided a core of a fast reactor including: a core fuel region in which core fuel assemblies loading a metal fuel are arranged on a central region in a radial direction of the core; an inner blanket fuel region in which blanket fuel assemblies loading another metal fuel are circumferentially arranged on an inner portion of the core fuel region; and an outer peripheral blanket fuel region in which the blanket fuel assemblies are circumferentially arranged on an outer periphery of the core fuel region, wherein the metal fuel is formed of a U—Pu—Zr alloy or an alloy of U, Pu, TRU other than Pu, and Zr, the other metal fuel is formed of an alloy of U and Zr, and the Zr content of the other metal fuel is lower than the Zr content of the metal fuel.