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69 条记录 (耗时 0.03 秒)

    Radioactive substance decontamination method and apparatus
    11.
    发明授权
    Radioactive substance decontamination method and apparatus 失效

    公开(公告)号：US06907891B2

    公开(公告)日：2005-06-21

    申请号：US10078347

    申请日：2002-02-21

    申请人： Kazumi Anazawa ,  Motoaki Sakashita ,  Makoto Nagase

    发明人： Kazumi Anazawa ,  Motoaki Sakashita ,  Makoto Nagase

    IPC分类号： G21F9/28 ,  G21F9/00

    CPC分类号： G21F9/001

    摘要： A radioactive substance decontamination method and apparatus which decontaminates a metal member contaminated by radioactive substance in a short period of time. This apparatus has (1) multiple reducing decontamination tanks having different radiation control values; (2) a carrier for immersing the metal member into the multiple reducing decontamination tanks and a washing tank; (3) a tube for transferring into the second reducing decontamination tank the reducing decontamination agent in the first reducing decontamination tank; (4) a reducing agent decomposer for decomposing a component contained in the reducing decontamination agent of the reducing decontamination tank where the radiation control value is the highest out of the reducing decontamination tanks connected by the tube; and (5) a washing tank for washing the reducing decontamination agent deposited on the decontaminated metal member.

    Radioactive substance decontamination method and apparatus
    12.
    发明申请
    Radioactive substance decontamination method and apparatus 审中-公开
    放射性物质去污方法及装置

    公开(公告)号：US20050014989A1

    公开(公告)日：2005-01-20

    申请号：US10807156

    申请日：2004-03-24

    申请人： Kazumi Anazawa ,  Motoaki Sakashita ,  Makoto Nagase

    发明人： Kazumi Anazawa ,  Motoaki Sakashita ,  Makoto Nagase

    IPC分类号： G21F9/28 ,  G21F9/00

    CPC分类号： G21F9/001

    摘要： A radioactive substance decontamination method and apparatus which decontaminates a metal member contaminated by radioactive substance in a short period of time. This apparatus has (1) multiple reducing decontamination tanks having different radiation control values; (2) a carrier for immersing the metal member into the multiple reducing decontamination tanks and a washing tank; (3) a tube for transferring into the second reducing decontamination tank the reducing decontamination agent in the first reducing decontamination tank; (4) a reducing agent decomposer for decomposing a component contained in the reducing decontamination agent of the reducing decontamination tank where the radiation control value is the highest out of the reducing decontamination tanks connected by the tube; and (5) a washing tank for washing the reducing decontamination agent deposited on the decontaminated metal member.

    摘要翻译： 一种放射性物质去污方法和设备，可在短时间内对被放射性物质污染的金属构件进行净化。 该装置具有（1）具有不同辐射控制值的多个还原净化槽; （2）用于将金属构件浸入多个还原净化槽和洗涤槽中的载体; （3）用于将第一还原去污罐中的还原去污剂转移到第二还原去污罐中的管; （4）一种还原剂分解器，用于分解由所述管连接的还原净化槽中的最大值的所述还原净化槽的还原去污剂中所含的成分， 和（5）用于洗涤沉积在去污金属构件上的还原去污剂的洗涤槽。

    Suppression Method of Radionuclide Deposition on Reactor Component of Nuclear Power Plant
    16.
    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。

    Natural circulation boiling water reactor and handling method thereof
    17.
    发明授权
    Natural circulation boiling water reactor and handling method thereof 有权
    自然循环沸水反应器及其处理方法

    公开(公告)号：US07769124B2

    公开(公告)日：2010-08-03

    申请号：US12132141

    申请日：2008-06-03

    申请人： Atsushi Watanabe ,  Yoichi Wada ,  Makoto Nagase ,  Kazushige Ishida ,  Hideyuki Hosokawa ,  Fumihito Hirokawa ,  Masaaki Tsubaki ,  Shiro Takahashi

    发明人： Atsushi Watanabe ,  Yoichi Wada ,  Makoto Nagase ,  Kazushige Ishida ,  Hideyuki Hosokawa ,  Fumihito Hirokawa ,  Masaaki Tsubaki ,  Shiro Takahashi

    IPC分类号： G21C17/00 ,  G21C19/00

    CPC分类号： G21C1/084 ,  G21C15/00 ,  G21Y2002/402 ,  G21Y2004/30 ,  Y02E30/31

    摘要： A handling method for a natural circulation boiling water reactor having a chimney having cylindrical chimney shell disposed above a core in a reactor pressure vessel, a plurality of square tubes disposed in the chimney shell, and a grid support plate with grid holes supporting and in communication with a lower end portion of the square tubes so that adjacent square tubes are disposed at an interval which exceeds the width of one square tube between them. The method includes steps shifting predetermined ones of the square tubes to the interval between the square tubes, and performing maintenance and inspection of members around a core via the grid holes which appear at positions from which the predetermined square tubes are taken out due to the shift of the predetermined square tubes.

    摘要翻译： 一种天然循环沸水反应器的处理方法，该反应器具有烟囱，该烟囱具有设置在反应堆压力容器内的核心上方的圆筒形烟囱壳，设置在烟囱式外壳中的多个方管，以及支撑和通信的格栅支撑板 具有方管的下端部分，使得相邻的方管以超过它们之间的一个方管的宽度的间隔设置。 该方法包括以下步骤：将方管中的预定方式移动到方管之间的间隔，并且通过栅格孔执行对围绕芯的构件的维护和检查，栅格孔出现在由于偏移而从其中取出预定方管的位置 的预定方形管。

    NATURAL CIRCULATION BOILING WATER REACTOR AND HANDLING METHOD THEREOF
    20.
    发明申请
    NATURAL CIRCULATION BOILING WATER REACTOR AND HANDLING METHOD THEREOF 有权
    自然循环锅炉水反应器及其处理方法

    公开(公告)号：US20070201607A1

    公开(公告)日：2007-08-30

    申请号：US11680072

    申请日：2007-02-28

    申请人： Atsushi WATANABE ,  Yoichi Wada ,  Makoto Nagase ,  Kazushige Ishida ,  Hideyuki Hosokawa ,  Fumihito Hirokawa ,  Masaaki Tsubaki ,  Shiro Takahashi

    发明人： Atsushi WATANABE ,  Yoichi Wada ,  Makoto Nagase ,  Kazushige Ishida ,  Hideyuki Hosokawa ,  Fumihito Hirokawa ,  Masaaki Tsubaki ,  Shiro Takahashi

    IPC分类号： G21C15/00

    CPC分类号： G21C1/084 ,  G21C15/00 ,  G21Y2002/402 ,  G21Y2004/30 ,  Y02E30/31

    摘要： A natural circulation boiling water reactor provides to a chimney with a plurality of tubes. That is to say, each of the plurality of tubes partitions the coolant flow path above a core. Thus, unlike the conventional natural circulation boiling water reactor providing the flow path partition wall grid in which the plate members are made integral by welding and coolant flow paths are partitioned, the chimney of the natural circulation boiling water reactor can reduce the number of welded portions because the edges of the four corners of each flow path do not need to be welded. The natural circulation boiling water reactor can avoid removal as a single unit, as in the case of the flow path partition wall grid in the conventional natural circulation boiling water reactor, by detaching each tube. The chimney can be easily detached from the reactor pressure vessel.

    摘要翻译： 自然循环沸水反应器提供给具有多个管的烟囱。 也就是说，多个管中的每一个将冷却剂流动路径分隔在核心上方。 因此，与传统的自然循环沸水反应器不同，通过焊接使板构件成为一体的流路分隔壁网格，并且冷却剂流动路径被分隔，自然循环沸水反应器的烟囱可以减少焊接部分的数量 因为每个流路的四个角的边缘不需要焊接。 自然循环沸水反应堆可以避免作为单一单元的去除，如在传统的自然循环沸水反应器中的流路分隔壁网格的情况下，通过分离每个管。 烟囱可以容易地与反应堆压力容器分离。