公开(公告)号：US5892805A

公开(公告)日：1999-04-06

申请号：US683980

申请日：1996-07-22

申请人： Kouichi Yamane ,  Yamato Asakura ,  Katsumi Ohsumi ,  Kenichi Ito ,  Noriyuki Ohnaka ,  Naohito Uetake ,  Motohiro Aizawa ,  Akira Ichimura

发明人： Kouichi Yamane ,  Yamato Asakura ,  Katsumi Ohsumi ,  Kenichi Ito ,  Noriyuki Ohnaka ,  Naohito Uetake ,  Motohiro Aizawa ,  Akira Ichimura

IPC分类号： G21D1/00 ,  G21C19/307 ,  G21D3/00 ,  G21D3/08

CPC分类号： G21C19/307 ,  G21Y2002/103 ,  G21Y2002/303 ,  G21Y2004/40

摘要： A reactor water clean-up system is provided with a first filter demineralizer having a filter resin containing an alkali substance and a second filter demineralizer with a filter resin not containing an alkali substance. The reactor water is supplied to the first filter demineralizer during the term from the starting operation of the preoperating test of the nuclear reactor and of each fuel cycle to 2000 EFPH. The alkali substance contained in the filter resin is guided into the nuclear reactor to change the pH of the reactor water in the nuclear reactor to the weak alkali side. The Cr quantity which is taken in the oxide film of the fuel cladding tube surface is reduced. After 2000 EFPH from the starting operation, the supply of the reactor water to the first filter demineralizer is stopped, and then, the reactor water is supplied to the second filter demineralizer.

摘要翻译： 反应器水净化系统设有具有含有碱性物质的过滤树脂的第一过滤器软化器和具有不含碱性物质的过滤树脂的第二过滤器软化器。 在从核反应堆的初步试验和每个燃料循环的启动操作到2000年的EFPH期间，将反应器水供应到第一过滤器软化器。 包含在过滤树脂中的碱性物质被引导到核反应堆中以将核反应堆中的反应器水的pH改变为弱碱侧。 在燃料包壳管表面的氧化膜中摄取的Cr量减少。 从启动操作开始2000次EFPH之后，停止向第一过滤脱盐装置供应反应器水，然后将反应器水供给到第二过滤器脱盐装置。

公开(公告)号：US5398268A

公开(公告)日：1995-03-14

申请号：US960847

申请日：1992-10-14

申请人： Hidefumi Ibe ,  Masanori Takahashi ,  Yasuko Aoki ,  Yamato Asakura ,  Makoto Nagase ,  Noriyuki Ohnaka ,  Masanori Sakai ,  Takashi Saito ,  Katsumi Ohsumi ,  Kazuhiko Akamine ,  Makoto Hayashi ,  Kiyotomo Nakata

发明人： Hidefumi Ibe ,  Masanori Takahashi ,  Yasuko Aoki ,  Yamato Asakura ,  Makoto Nagase ,  Noriyuki Ohnaka ,  Masanori Sakai ,  Takashi Saito ,  Katsumi Ohsumi ,  Kazuhiko Akamine ,  Makoto Hayashi ,  Kiyotomo Nakata

IPC分类号： G21C17/02 ,  G21C17/022 ,  G21D1/00 ,  G21D3/08 ,  G21C9/00

CPC分类号： G21C17/0225 ,  G21C17/022 ,  G21Y2002/304 ,  G21Y2004/40

摘要： A water chemistry factor which is specific to a specific portion of a primary cooling system and universal is decided to be a standard target. The concentration of an agent for mitigating corrosion damage of structural material of the primary cooling system is controlled so that the target will be in a desirable range. All sensor groups provided in the primary cooling system are separated into sensor groups in different lines, of which a specific sensor group are connected to an arithmetic unit and a data base and are for always monitoring a plant process. For example, concentration distribution agreed with measured value oxidation component in the reactor water at the measurement points is selected from the data base, and it is used to estimate the standard target.

摘要翻译： 特定于主冷却系统和通用特定部分的水化学因子决定为标准目标。 减轻主冷却系统结构材料的腐蚀损伤的试剂的浓度被控制，使得靶在期望的范围内。 主冷却系统中提供的所有传感器组分为不同的传感器组，其中特定传感器组连接到算术单元和数据库，并用于始终监测工厂过程。 例如，从数据库中选择测量点的反应堆水中测量值氧化成分的浓度分布，并用于估计标准目标。

公开(公告)号：US5186798A

公开(公告)日：1993-02-16

申请号：US514970

申请日：1990-04-26

申请人： Masanori Sakai ,  Katsumi Ohsumi ,  Noriyuki Ohnaka ,  Eiji Kikuchi ,  Katsumi Mabuchi ,  Takuya Takahashi

发明人： Masanori Sakai ,  Katsumi Ohsumi ,  Noriyuki Ohnaka ,  Eiji Kikuchi ,  Katsumi Mabuchi ,  Takuya Takahashi

IPC分类号： G01N27/42

CPC分类号： G01N27/42

摘要： This invention comprises electrochemical analytical devices capable of performing electrolysis in multiple pulse modes. It relates to a method of quantitative analysis and equipment for performing quantitative analysis which uses a combination of these pulse modes to realize the measurement of concentrations of multiple substances to be measured, occurring in the test solution to be measured and also a nuclear reactor water quality control system employing such a quantitative analysis method.

摘要翻译： 本发明包括能够以多种脉冲模式进行电解的电化学分析装置。 它涉及一种定量分析方法和进行定量分析的设备，该方法采用这些脉冲模式的组合来实现要测量的测试溶液中发生的待测量的多种物质的浓度以及核反应堆的水质 采用这种定量分析方法的控制系统。

公开(公告)号：US4940564A

公开(公告)日：1990-07-10

申请号：US110454

申请日：1987-10-20

申请人： Motohiro Aizawa ,  Katsumi Ohsumi ,  Takashi Honda ,  Hisao Itow

发明人： Motohiro Aizawa ,  Katsumi Ohsumi ,  Takashi Honda ,  Hisao Itow

IPC分类号： G21D1/00 ,  G21C17/022 ,  G21C19/28 ,  G21D3/08

CPC分类号： G21C17/0225 ,  G21C19/28

摘要： In a boiling water-type, nuclear power plant, deposition of radioactive substances on the surfaces of out-of-core components in the primary cooling water system in the nuclear power plant is suppressed by injecting an alkaline element into reactor water in the presence of more than an amount of the oxygen formed by nuclear fission of the reactor water and dissolved in the reactor water, particularly without hydrogen gas injection, during the nuclear heatup operation period of a boiling water type, nuclear power plant and circulating the injected alkaline element through the primary cooling water system of a nuclear reactor, thereby forming an oxide film on the surfaces of out-of-core components in the primary cooling water system of the nuclear reactor. Exposure of plant personnel to radioactivity can be reduced thereby. The present boiling water-type, nuclear power plant is provided with a means for forming such oxide film.

摘要翻译： 在沸水型核电厂中，通过在碱性元素的存在下将碱性元素注入反应器水中来抑制放射性物质沉积在核电厂初级冷却水系统中的核心外部组分的表面上 在沸水型核电厂的核加热运行期间，通过反应器水的核裂变形成的氧气量多于溶解在反应器水中的气体，特别是不喷射氢气，并使注入的碱性元素循环通过 核反应堆的一级冷却水系统，从而在核反应堆的一级冷却水系统中的核心部件的表面上形成氧化膜。 因此可以减少植物人员暴露于放射性。 现在的沸水型核电厂设有形成这种氧化膜的方法。

公开(公告)号：US4937038A

公开(公告)日：1990-06-26

申请号：US281212

申请日：1988-12-08

申请人： Masanori Sakai ,  Katsumi Ohsumi ,  Noriyuki Ohnaka ,  Eiji Kikuchi ,  Katsumi Mabuchi ,  Takuya Takahashi

发明人： Masanori Sakai ,  Katsumi Ohsumi ,  Noriyuki Ohnaka ,  Eiji Kikuchi ,  Katsumi Mabuchi ,  Takuya Takahashi

IPC分类号： G01N27/48 ,  G01N27/42 ,  G21C17/02 ,  G21C19/307 ,  G21D3/08

CPC分类号： G01N27/42 ,  Y10T436/206664

摘要： This invention comprises electrochemical analytical devices capable of performing electrolysis in multiple pulse modes. It relates to a method of quantitative analysis and equipment for performing quantitative analysis which uses a combinaiton of these pulse modes to realize the measurement of concentrations of multiple substances to be measured, occurring in the test solution to be measured and also a nuclear reactor water quality control system employing such a quantitative analysis method.

公开(公告)号：US4927598A

公开(公告)日：1990-05-22

申请号：US240601

申请日：1988-09-06

申请人： Yoshitaka Nishino ,  Toshio Sawa ,  Katsumi Ohsumi ,  Hisao Itow

发明人： Yoshitaka Nishino ,  Toshio Sawa ,  Katsumi Ohsumi ,  Hisao Itow

IPC分类号： G21D1/00 ,  G21C17/022 ,  G21C19/307 ,  G21D3/08

CPC分类号： G21C17/0225 ,  G21C19/307

摘要： The primary cooling water in a primary cooling water recirculation path of a nuclear power plant is heated and recirculated in the presence of beryllium, and a film of nickel ferrite and/or cobalt ferrite is formed on the surface of pipings and various apparatus and devices connecting with the primary cooling water. The beryllium is injected in the form of beryllium ion into the primary cooling water, or is disposed in the form of beryllium or beryllium-containing alloy in the piping and/or the various apparatus and devices.

摘要翻译： 核电厂的一次冷却水再循环路径中的主要冷却水在铍存在下被加热和再循环，并且在管道表面上形成镍铁氧体和/或钴铁氧体膜，并连接各种装置和装置 与主要冷却水。 将铍以铍离子的形式注入主冷却水中，或者在管道和/或各种装置和装置中以铍或铍合金的形式设置。

公开(公告)号：US4894202A

公开(公告)日：1990-01-16

申请号：US103705

申请日：1987-10-02

申请人： Makoto Nagase ,  Yamato Asakura ,  Hidetoshi Karasawa ,  Masaharu Sakagami ,  Shunsuke Uchida ,  Toshio Sawa ,  Katsumi Ohsumi

发明人： Makoto Nagase ,  Yamato Asakura ,  Hidetoshi Karasawa ,  Masaharu Sakagami ,  Shunsuke Uchida ,  Toshio Sawa ,  Katsumi Ohsumi

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

CPC分类号： G21C17/0225

摘要： Disclosed is a method and apparatus for inhibiting radioactive substances eluting into cooling water of a nuclear plant. The method uses an index consisting of an amount of iron adhered onto the fuel cladding surface, that is calculated from the iron concentration of the cooling water and the operation time. A formation of a layer of the iron oxide on the fuel cladding surface is confirmed based upon the covering ratio of 100%. When the covering ratio is smaller than 100%, the iron concentration in the cooling water is controlled to remain constant at a maximum concentration. The Fe/Ni molar concentration ratio in the cooling water is adjusted to be set from about 2 to 10 after the layer of iron oxide reaches a covering ratio of 100%. .sup.58 Co ion and .sup.60 Co ion concentrations in the cooling water can be decreased without greatly increasing the concentration of precipitating radioactive crud, and the surface dosage in the primary system can be decreased at the time of regular checking.

摘要翻译： 公开了一种抑制放射性物质洗脱到核电厂冷却水中的方法和装置。 该方法使用由附着在燃料包覆表面上的铁量组成的指数，其由冷却水的铁浓度和操作时间计算。 基于100％的覆盖率确认燃料包覆面上的氧化铁层的形成。 当覆盖率小于100％时，冷却水中的铁浓度被控制为保持恒定在最大浓度。 在氧化铁层达到100％的覆盖率之后，将冷却水中的Fe / Ni摩尔浓度比调整为约2〜10。 可以降低冷却水中的58Co离子和60Co离子浓度，而不会大大增加沉淀放射性碎屑的浓度，并且在定期检查时可以减少初级体系中的表面剂量。

公开(公告)号：US4820473A

公开(公告)日：1989-04-11

申请号：US795466

申请日：1985-11-06

申请人： Kenya Ohashi ,  Takashi Honda ,  Yasumasa Furutani ,  Eizi Kashimura ,  Akira Minato ,  Katsumi Ohsumi

发明人： Kenya Ohashi ,  Takashi Honda ,  Yasumasa Furutani ,  Eizi Kashimura ,  Akira Minato ,  Katsumi Ohsumi

IPC分类号： C23C8/10 ,  C23C8/16 ,  C23C8/18 ,  G21C17/022 ,  G21F9/00 ,  G21F9/28 ,  G21F9/30 ,  G21C19/30

CPC分类号： G21C17/0225 ,  C23C8/10 ,  C23C8/16 ,  C23C8/18 ,  G21F9/004 ,  Y10S376/90

摘要： The present invention is concerned with a method of reducing radioactivity in a nuclear plant by preliminarily forming oxide films on the surfaces of metallic structural members to be in contact with high-temperature and high-pressure reactor water containing radioactive substances before said metallic members are exposed to said reactor water. The method is characterized by the steps of subjecting said structural members to a first-step oxidation treatment of heating said structural members in an environment of a high temperature, and further subjecting the thus treated structural members to a second step oxidation treatment of heating said treated structural members in an environment having a higher oxidizing capacity than that of said environment in said first-step oxidation treatment to form a denser oxide film than an oxide film obtained in said first step oxidation treatment. According to the present invention, radioactivity in the nuclear plant can be reduced remarkably.

摘要翻译： 本发明涉及通过在金属构件暴露之前预先形成金属结构构件的表面上的氧化物膜以与含有放射性物质的高温高压反应器水接触的方法来降低核电厂中的放射性的方法 到所述反应器水。 该方法的特征在于：在高温环境中对所述结构部件进行第一步氧化处理以加热所述结构部件，并进一步对经过处理的结构部件进行第二阶段氧化处理，加热所述处理过的 在所述第一步氧化处理中，氧化能力高于所述环境的环境中的结构体，以形成比在所述第一步骤氧化处理中获得的氧化膜更致密的氧化膜。 根据本发明，可以显着降低核电厂的放射性。

公开(公告)号：US4564499A

公开(公告)日：1986-01-14

申请号：US666033

申请日：1984-10-29

申请人： Takashi Honda ,  Akira Minato ,  Masakiyo Izumiya ,  Eizi Kashimura ,  Katsumi Ohsumi

发明人： Takashi Honda ,  Akira Minato ,  Masakiyo Izumiya ,  Eizi Kashimura ,  Katsumi Ohsumi

IPC分类号： G21D1/00 ,  C23F13/00 ,  C23F14/00 ,  C23F15/00 ,  F28F19/00 ,  G21C9/00

CPC分类号： C23F15/00

摘要： A method of inhibiting corrosion of carbon steel piping of condensate and feed water systems in a power generating plant, characterized by continuing the water in said piping to flow after also said plant has been shut down until it is restarted up and by keeping the specific electric conductivity of flowing water at 0.5 .mu.S/cm or less.

摘要翻译： 一种抑制发电厂冷凝水和给水系统碳钢管道腐蚀的方法，其特征在于，所述管道中的水在所述设备已被关闭之后继续流动，直到其重新启动并且通过保持特定的电 流动水的电导率为0.5μS/ cm以下。

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。