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：US07869557B2

公开(公告)日：2011-01-11

申请号：US12354925

申请日：2009-01-16

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： G21C9/00

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。

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。

公开(公告)号：US20090225928A1

公开(公告)日：2009-09-10

申请号：US12354925

申请日：2009-01-16

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。

公开(公告)号：US20090190712A1

公开(公告)日：2009-07-30

申请号：US12363905

申请日：2009-02-02

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： G21C9/00

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。

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：US07864914B2

公开(公告)日：2011-01-04

申请号：US12363905

申请日：2009-02-02

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： G21C9/00

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。

公开(公告)号：US20090141849A1

公开(公告)日：2009-06-04

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： G21F9/00

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.

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：US08175211B2

公开(公告)日：2012-05-08

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： G21C9/00

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。