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    Light water moderation type nuclear reactor
    2.
    发明授权
    Light water moderation type nuclear reactor 失效
    轻水缓和型核反应堆

    公开(公告)号：US4851181A

    公开(公告)日：1989-07-25

    申请号：US123542

    申请日：1987-11-20

    申请人： Renzo Takeda ,  Kanji Kato ,  Tadahiro Ohnishi ,  Sadao Uchikawa ,  Hiromi Maruyama ,  Motoo Aoyama ,  Kikuo Umegaki ,  Yasunori Bessho ,  Motomasa Fuse ,  Michiro Yokomi

    发明人： Renzo Takeda ,  Kanji Kato ,  Tadahiro Ohnishi ,  Sadao Uchikawa ,  Hiromi Maruyama ,  Motoo Aoyama ,  Kikuo Umegaki ,  Yasunori Bessho ,  Motomasa Fuse ,  Michiro Yokomi

    IPC分类号： G21C5/12 ,  G21C1/08 ,  G21C3/328 ,  G21C5/00 ,  G21C5/18

    CPC分类号： G21C5/18 ,  Y02E30/40

    摘要： In a light water moderation type nuclear reactor with the once-through method, the reactor core is divided into a central area and a peripheral area by a partition member, a first fuel assembly is arranged in the central area (high conversion area) and a second fuel assembly is arranged in the peripheral area. The ratio (r.sub.H/U) of the number of hydrogen atoms to that of uranium atoms in the central area is smaller than that of the ratio in the peripheral area and the second fuel assembly in the peripheral area is formed of fuel rods of the first fuel assembly having been previously burned in the central area and moved into the peripheral area. The plutonium production increases and uranium consumption is reduced during the first half of the lifetime of the fuel rods in the high conversion area with the take-up burn up increasing during the second half of the lifetime of the fuel rods in the burner area.

    摘要翻译： 在具有一次通过方法的轻水调节型核反应堆中，反应堆堆芯通过分隔构件分成中心区域和周边区域，第一燃料组件布置在中心区域（高转化区域）和 第二燃料组件布置在周边区域中。 中心区域的氢原子数与铀原子数的比值（rH / U）小于外围区域的比例，并且周边区域中的第二燃料组件的比率（rH / U）由第一 燃料组件先前已经在中心区域燃烧并移动到周边区域。 在高转化率区域的燃料棒的寿命的前半期，钚的生产增加，铀的消耗减少，在燃烧器区域的燃料棒的寿命的后半期，吸收燃烧增加。

    Nuclear reactor core construction
    3.
    发明授权
    Nuclear reactor core construction 失效
    核反应堆核心建设

    公开(公告)号：US4378329A

    公开(公告)日：1983-03-29

    申请号：US158363

    申请日：1980-06-11

    申请人： Sadao Uchikawa ,  Motomasa Fuse ,  Yasuhiro Kobayashi ,  Renzo Takeda

    发明人： Sadao Uchikawa ,  Motomasa Fuse ,  Yasuhiro Kobayashi ,  Renzo Takeda

    IPC分类号： G21C5/12 ,  G21C5/00 ,  G21C5/18 ,  G21C7/04 ,  G21C3/32

    CPC分类号： G21C7/04 ,  G21C5/00 ,  G21Y2002/201 ,  G21Y2004/10 ,  G21Y2004/30 ,  Y02E30/39

    摘要： A core construction for a nuclear reactor having a multiplicity of fuel cells forming a core in which each fuel cell includes four fuel assemblies arranged in adjacent relationship and one control rod insertable into a position surrounded by the four fuel assemblies. The fuel cells includes first fuel cells each having a relatively high cell mean infinite neutron multiplication factor and including one fuel assembly containing a burnable poison, and second fuel cells each having a relatively low cell mean infinite neutron multiplication factor and including no fuel assembly containing a burnable poison. The first fuel cells are arranged both in a central zone of the core disposed within about one-half the core radius from the center of the core and in a circumferential zone of the core outside the central zone. The second fuel cells are arranged only in the central zone and no second fuel cells are arranged in the circumferential zone. Only the second fuel cells provide control cells in which the control rods are operative to adjust core reactivity changes and power distribution changes during normal power operation of the reactor.

    摘要翻译： 一种用于核反应堆的核心结构，其具有形成核心的多个燃料电池，其中每个燃料电池包括相邻关系排列的四个燃料组件，以及可插入由四个燃料组件包围的位置的一个控制棒。 燃料电池包括每个具有相对高的电池平均无限中子倍增因子的第一燃料电池，并且包括一个包含可燃毒物的燃料组件，以及每个具有相对低的电池平均无限中子倍增因子的第二燃料电池，并且不包括燃料组件， 可燃毒 第一燃料电池被布置在核心的中心区域中，该中心区域设置在离核心的中心大约一半半径的芯半径处，并且在芯部的圆周区域中央区域外部。 第二燃料电池仅布置在中心区域中，并且在周向区域中不设置第二燃料电池。 只有第二燃料电池提供控制电池，其中控制棒可操作以在电抗器的正常电力操作期间调节铁心反应性变化和配电变化。

    Suppression Method of Radionuclide Deposition on Reactor Component of Nuclear Power Plant
    4.
    发明申请
    Suppression Method of Radionuclide Deposition on Reactor Component of Nuclear Power Plant 有权
    核电厂反应堆部件放射性核素沉积抑制方法

    公开(公告)号：US20110176649A1

    公开(公告)日：2011-07-21

    申请号：US12984326

    申请日：2011-01-04

    申请人： Hideyuki HOSOKAWA ,  Makoto Nagase ,  Kazushige Ishida ,  Yoichi Wada ,  Naoshi Usui ,  Motohiro Aizawa ,  Motomasa Fuse

    发明人： Hideyuki HOSOKAWA ,  Makoto Nagase ,  Kazushige Ishida ,  Yoichi Wada ,  Naoshi Usui ,  Motohiro Aizawa ,  Motomasa Fuse

    IPC分类号： G21C9/00

    CPC分类号： G21C19/42 ,  G21C17/0225 ,  G21F9/06 ,  G21F9/12 ,  G21F9/28

    摘要： A method of suppressing deposition of radionuclides on components of a nuclear power plant comprises forming a ferrite film by contacting a first chemical including iron (II) ions, a second chemical for oxidizing the iron (II) ions to iron (III) ions, and a third chemical for adjusting the pH of a processing solution containing a mixture of the first and second chemicals to be 5.5 to 9.0 with the metal member surface in a time period from a finishing stage in decontamination step of removing contaminants formed on the surface of metal member composing the nuclear power plant, and suppressing deposition of radionuclides on the metal member by the ferrite film.

    摘要翻译： 一种抑制放射性核素在核电厂部件上沉积的方法包括通过使含有铁（II）离子的第一化学物质，将铁（II）离子氧化成铁（III）离子的第二种化学物质）与第 第三种化学品，用于在去除在金属表面形成的污染物的净化步骤的净化步骤的整理阶段中调节含有第一和第二化学品的混合物的处理溶液的pH为5.5至9.0的金属构件表面 构成核电站的成员，并且通过铁氧体膜抑制放射性核素在金属构件上的沉积。

    Method of stress corrosion cracking mitigation for nuclear power plant structural materials
    5.
    发明申请
    Method of stress corrosion cracking mitigation for nuclear power plant structural materials 有权
    核电厂结构材料应力腐蚀开裂缓解方法

    公开(公告)号：US20080292042A1

    公开(公告)日：2008-11-27

    申请号：US12213316

    申请日：2008-06-18

    申请人： Kazushige Ishida ,  Yoichi Wada ,  Makoto Nagase ,  Masahiko Tachibana ,  Masao Endo ,  Motomasa Fuse ,  Naoshi Usui ,  Motohiro Aizawa

    发明人： Kazushige Ishida ,  Yoichi Wada ,  Makoto Nagase ,  Masahiko Tachibana ,  Masao Endo ,  Motomasa Fuse ,  Naoshi Usui ,  Motohiro Aizawa

    IPC分类号： G21C15/00

    CPC分类号： G21C17/0225

    摘要： The object of this invention is to provide a method for mitigating a stress corrosion cracking of reactor structural material which makes it possible to suppress the rise in the main steam line dose rate without secondary effects such as a rise in the concentration of radioactive cobalt-60, etc. in the reactor water. Hydrogen and a reductive nitrogen compound containing nitrogen having a negative oxidation number (for example, hydrazine) are injected into the core water of boiling water nuclear power plant. By injecting the reductive nitrogen compound containing nitrogen having a negative oxidation number into the core water, the stress corrosion cracking of structural material of reactor can be mitigated without side reactions such as a rise in the concentration of cobalt-60, etc.

    摘要翻译： 本发明的目的是提供一种减轻反应堆结构材料的应力腐蚀开裂的方法，其可以抑制主蒸汽管线剂量率的上升而没有二次效应，例如放射性钴-60浓度的升高 等等在反应堆水中。 将氢和含有负氧化数的氮（例如肼）的还原氮化合物注入沸水核电厂的核心水中。 通过将含有负氧化数的氮的还原性氮化合物注入芯水中，可以缓解反应器结构材料的应力腐蚀开裂，而不会发生诸如钴-60等的浓度升高的副反应。

    Method of stress corrosion cracking mitigation for nuclear power plant structural materials
    6.
    发明申请
    Method of stress corrosion cracking mitigation for nuclear power plant structural materials 审中-公开
    核电厂结构材料应力腐蚀开裂缓解方法

    公开(公告)号：US20050018805A1

    公开(公告)日：2005-01-27

    申请号：US10896092

    申请日：2004-07-22

    申请人： Kazushige Ishida ,  Yoichi Wada ,  Makoto Nagase ,  Masahiko Tachibana ,  Masao Endo ,  Motomasa Fuse ,  Naoshi Usui ,  Motohiro Aizawa

    发明人： Kazushige Ishida ,  Yoichi Wada ,  Makoto Nagase ,  Masahiko Tachibana ,  Masao Endo ,  Motomasa Fuse ,  Naoshi Usui ,  Motohiro Aizawa

    IPC分类号： G21D3/08 ,  G21C17/00 ,  G21D1/00

    CPC分类号： G21C17/0225

    摘要： The object of this invention is to provide a method for mitigating a stress corrosion cracking of reactor structural material which makes it possible to suppress the rise in the main steam line dose rate without secondary effects such as a rise in the concentration of radioactive cobalt-60, etc. in the reactor water. Hydrogen and a reductive nitrogen compound containing nitrogen having a negative oxidation number (for example, hydrazine) are injected into the core water of boiling water nuclear power plant. By injecting the reductive nitrogen compound containing nitrogen having a negative oxidation number into the core water, the stress corrosion cracking of structural material of reactor can be mitigated without side reactions such as a rise in the concentration of cobalt-60, etc.

    摘要翻译： 本发明的目的是提供一种减轻反应堆结构材料的应力腐蚀开裂的方法，其可以抑制主蒸汽管线剂量率的上升而没有二次效应，例如放射性钴-60浓度的升高 等等在反应堆水中。 将氢和含有负氧化数的氮（例如肼）的还原氮化合物注入沸水核电厂的核心水中。 通过将含有负氧化数的氮的还原性氮化合物注入芯水中，可以缓解反应器结构材料的应力腐蚀开裂，而不会发生诸如钴-60等的浓度升高的副反应。

    Apparatus for material surface observation
    7.
    发明授权
    Apparatus for material surface observation 失效
    用于材料表面观察的装置

    公开(公告)号：US5111043A

    公开(公告)日：1992-05-05

    申请号：US639129

    申请日：1991-01-09

    申请人： Naoto Shigenaka ,  Tsuneyuki Hashimoto ,  Motomasa Fuse

    发明人： Naoto Shigenaka ,  Tsuneyuki Hashimoto ,  Motomasa Fuse

    IPC分类号： G01Q30/02 ,  H01J37/28

    CPC分类号： H01J37/28 ,  H01J2237/244

    摘要： An apparatus of material surface observation related to the present invention is a scanning electron microscope which is combined with an accelerator of charged particles. The material surface is activated by irradiation of the charged particles and a surface reaction is induced. Secondary electron in generated by irradiation of the scanning electron beam depending on a shape of the material surface. The secondary electron generated by the irradiation of the scanning electron beam is discriminated from the secondary electrode generated by the irradiation of the charged particles, and only a signal of the secondary electron generated by the irradiation of the scanning electron beam is visualized. Consequently, a reaction process of the material surface which is activated or is reaction-induced by the irradiation of the charged particles can be observed in atomic level with less noise.

    摘要翻译： 与本发明有关的材料表面观察装置是与带电粒子的加速器结合的扫描型电子显微镜。 材料表面通过照射带电粒子而被激活，并引起表面反应。 根据材料表面的形状通过扫描电子束的照射而产生的二次电子。 通过照射扫描电子束产生的二次电子与通过照射带电粒子产生的二次电极区分开，只有通过扫描电子束的照射产生的二次电子的信号被可视化。 因此，能够以较小的噪音以原子级观察被激发的物质表面或被带电粒子的照射反应的反应过程。

    Electrochemical corrosion potential sensor
    8.
    发明授权
    Electrochemical corrosion potential sensor 有权
    电化学腐蚀电位传感器

    公开(公告)号：US08524056B2

    公开(公告)日：2013-09-03

    申请号：US12696355

    申请日：2010-01-29

    申请人： Kazushige Ishida ,  Yoichi Wada ,  Masahiko Tachibana ,  Motomasa Fuse ,  Naoshi Usui ,  Motohiro Aizawa ,  Nobuyuki Ota

    发明人： Kazushige Ishida ,  Yoichi Wada ,  Masahiko Tachibana ,  Motomasa Fuse ,  Naoshi Usui ,  Motohiro Aizawa ,  Nobuyuki Ota

    IPC分类号： G01N17/00 ,  G01N27/26 ,  G21C9/00

    CPC分类号： G21C17/022 ,  G01N17/04

    摘要： An electrochemical corrosion potential sensor (ECP sensor) has an electrode cap, an electrode fixing body, a tubular insulator, a tubular metallic housing, and a conductive wire. Both ends of the tubular insulator are connected to the electrode fixing body and the tubular metallic housing respectively. A conductive wire passes through the tubular insulator and the tubular metallic housing, and is connected to an inner surface of the electrode fixing body. The electrode cap 11 disposed to cover an outer surface of the electrode fixing body. The ECP sensor with such a construction can lengthen the lifetime.

    摘要翻译： 电化学腐蚀电位传感器（ECP传感器）具有电极盖，电极固定体，管状绝缘体，管状金属外壳和导线。 管状绝缘体的两端分别与电极固定体和管状金属外壳连接。 导线穿过管状绝缘体和管状金属外壳，并连接到电极固定体的内表面。 设置为覆盖电极固定体的外表面的电极帽11。 具有这种结构的ECP传感器可以延长使用寿命。