公开(公告)号：US5715290A

公开(公告)日：1998-02-03

申请号：US260472

申请日：1994-06-14

申请人： Naohito Uetake ,  Masayoshi Kondoh ,  Makoto Nagase ,  Hideyuki Hosokawa ,  Teruo Hara ,  Yamato Asakura ,  Katsumi Ohsumi ,  Kazuhiko Akamine ,  Kouichi Yamane

发明人： Naohito Uetake ,  Masayoshi Kondoh ,  Makoto Nagase ,  Hideyuki Hosokawa ,  Teruo Hara ,  Yamato Asakura ,  Katsumi Ohsumi ,  Kazuhiko Akamine ,  Kouichi Yamane

IPC分类号： G21C3/06 ,  G21C17/022 ,  G21C19/30 ,  G21C19/307 ,  G21D1/00 ,  G21D3/08 ,  G21C19/28

CPC分类号： G21C17/0225 ,  G21C19/307

摘要： In reactor water control for a BWR power plant during an operation cycle after loading new fuel rods in the BWR power plant, an operation is performed which accelerates deposition of crud on the fuel rods until the deposition amount of the crud on the fuel rods reaches a predetermined target value within the operation cycle concerned. After the deposition amount of the crud has reached the predetermined target value, the crud deposition accelerating operation is terminated, whereby even when loading new fuel rods such as Zr liner type fuel rods having a surface on which metal ion deposition has been difficult, radioactivity in the reactor water is efficiently reduced.

摘要翻译： 在BWR发电厂装载新的燃料棒之后的操作循环期间，在BWR发电厂的反应堆水控制中，执行加速燃料棒上的原油沉积的操作，直到燃料棒上的原油的沉积量达到 相关操作循环中的预定目标值。 在原油的沉积量达到预定目标值之后，终止原油沉积加速操作，由此即使当装载具有难以进行金属离子沉积的表面的诸如Zr衬垫式燃料棒的新的燃料棒时，放射性 反应器水被有效地减少。

公开(公告)号：US06606368B2

公开(公告)日：2003-08-12

申请号：US09839368

申请日：2001-04-23

申请人： Yoshiyuki Takamori ,  Masanori Sakai ,  Yamato Asakura ,  Masato Nakamura ,  Hideyuki Hosokawa ,  Nagao Suzuki ,  Kouji Hayashi

发明人： Yoshiyuki Takamori ,  Masanori Sakai ,  Yamato Asakura ,  Masato Nakamura ,  Hideyuki Hosokawa ,  Nagao Suzuki ,  Kouji Hayashi

IPC分类号： G21D300

CPC分类号： G21C19/28 ,  G21Y2002/103 ,  G21Y2002/201 ,  G21Y2002/207 ,  G21Y2002/40 ,  G21Y2004/10 ,  G21Y2004/20 ,  G21Y2004/40

摘要： In a nuclear power plant, by injecting an amount of hydrogen small enough not to increase a radiation dose rate of the main steam system, ECP of metallic component materials composing a nuclear reactor can be decreased to suppress the potential of occurrence of IGSCC, and the control can be easily performed, and the operating cost can be suppressed to increase. Occurrence of intergranular stress corrosion cracking in metallic component materials in contact with reactor cooling water is suppressed by injecting zirconium hydroxide and hydrogen into the reactor cooling water to decrease the electrochemical corrosion potential of the metallic component materials.

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。

公开(公告)号：US20080075886A1

公开(公告)日：2008-03-27

申请号：US11839939

申请日：2007-08-16

申请人： Makoto NAGASE ,  Hideyuki Hosokawa ,  Kazushige Ishida ,  Satoshi Morisawa ,  Motoaki Sakashita ,  Motohiro Aizawa

发明人： Makoto NAGASE ,  Hideyuki Hosokawa ,  Kazushige Ishida ,  Satoshi Morisawa ,  Motoaki Sakashita ,  Motohiro Aizawa

IPC分类号： B01J19/10

CPC分类号： G21F9/005

摘要： A nuclear reactor structural material (for example, a spacer spring) is immersed in purified water in a treatment bath. The temperature of the purified water increased to 90° C. by a heater. Iron formate (a solution containing iron (II) ions) in an iron formate tank, hydrogen peroxide in a hydrogen peroxide tank, and hydrazine in a hydrazine tank are injected into a pipe and are guided into the treatment bath. The injection of iron formate is performed until the concentration of iron (II) ions in the purified water becomes 200 ppm or more. By injecting hydrazine, pH is adjusted in a range of from 5.5 to 9.0. A portion of a magnetite film thus formed on the structural material is then removed, e.g., by applying ultrasonic waves. With this process, a fine strong magnetite film for suppressing the elution of cobalt from the nuclear reactor structural material is formed on the surface of the nuclear reactor structural material.

摘要翻译： 将核反应堆结构材料（例如，间隔弹簧）浸入处理浴中的净化水中。 净化水的温度通过加热器升至90℃。 将甲酸铁（含有铁（II）离子的溶液）在甲酸铁罐中，过氧化氢罐中的过氧化氢和肼罐中的肼注入管中并被引导到处理浴中。 执行甲酸铁的注入，直到净化水中的铁（II）离子的浓度变为200ppm以上。 通过注射肼，将pH调节在5.5至9.0的范围内。 因此，如此形成在结构材料上的磁铁矿膜的一部分例如通过施加超声波被去除。 通过该方法，在核反应堆结构材料的表面上形成用于抑制钴从核反应堆结构材料中洗脱的细的强磁铁矿膜。

公开(公告)号：US07889828B2

公开(公告)日：2011-02-15

申请号：US12410558

申请日：2009-03-25

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包含铁（II）离子的第一化学品，用于氧化铁（II）离子的第二种化学品与铁（III）离子）接触来形成铁氧体膜，以及 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将含有第一和第二化学品的混合物的处理溶液的pH调节至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。

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。

公开(公告)号：US20070127619A1

公开(公告)日：2007-06-07

申请号：US11485984

申请日：2006-07-14

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

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

IPC分类号： G21C3/00

CPC分类号： G21C13/087 ,  C23F15/00 ,  G21C19/00 ,  G21Y2002/201 ,  G21Y2004/40 ,  Y02E30/40

摘要： It is an object of the present invention to efficiently suppress radionuclide deposition on a reactor component of nuclear power plant. Radionuclide deposition on the surface of a metallic reactor component of nuclear power plant is suppressed by forming a ferrite film on the component, wherein the film is formed, after decontamination for removing radionuclides contaminants from the component surface is completed and before the plant is started up, by contacting a treatment solution which mixes a first agent containing the iron (II) ions, a second agent for oxidizing the iron (II) ions into the iron (III) ions and a third agent for adjusting pH level of a solution to 5.5 to 9.0 in this order with the reactor component surface.

摘要翻译： 本发明的目的是有效地抑制放射性核素沉积在核电站的反应器部件上。 核电站金属反应堆部件表面上的放射性核素沉积被抑制，在部件上形成铁氧体膜，其中形成膜，在从组件表面去除放射性核素污染物的净化完成之后并且在工厂启动之前 通过使含有铁（II）离子的第一试剂混合的处理溶液与将铁（II）离子氧化成铁（III）离子的第二试剂和用于将溶液的pH水平调节至5.5的第三试剂接触 以9.0的顺序与反应器组件表面。

公开(公告)号：US08457270B2

公开(公告)日：2013-06-04

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： G21C19/42

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包含铁（II）离子的第一化学品，用于氧化铁（II）离子的第二种化学品与铁（III）离子）接触来形成铁氧体膜，以及 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将含有第一和第二化学品的混合物的处理溶液的pH调节至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。

公开(公告)号：US07907695B2

公开(公告)日：2011-03-15

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： G21C3/56

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。

公开(公告)号：US07844024B2

公开(公告)日：2010-11-30

申请号：US12364556

申请日：2009-02-03

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包含铁（II）离子的第一化学品，用于氧化铁（II）离子的第二种化学品与铁（III）离子）接触来形成铁氧体膜，以及 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将含有第一和第二化学品的混合物的处理溶液的pH调节至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。