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1. 发明专利

JP2005257626A Nuclear power plant 有权
标题翻译：核电站
公开(公告)号：JP2005257626A
公开(公告)日：2005-09-22
申请号：JP2004072818
申请日：2004-03-15
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ISHIDA KAZUNARI , WADA YOICHI , NAGASE MAKOTO , TACHIBANA MASAHIKO , AIZAWA MOTOHIRO
IPC分类号： G21C19/307 , G21D1/00 , G21D3/08
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To provide a nuclear power plant enabling removal of ammonia which has flowed out of a reactor pressure vessel. SOLUTION: The nuclear power plant is equipped with an agent injection means 61 that injects a compound, containing nitrogen whose oxidation number is negative into cooling water in a reactor. The plant has a catalyst part, consisting of an adsorbent that adsorbs ammonia and a catalyst that oxidizes and decomposes the ammonia, adsorbed by the adsorbent in a flow channel 3, where the steam generated in the reactor pressure vessel 1 including nuclear fuel passes through and flows. The plant has a structure, where a cation remover is placed farther upstream of feedwater heater 27 that heats the water condensed by a condenser 19, upstream to the flow of water in a flow channel 29 for guiding and feeding the water condensed by an oxidative decomposition means 5 for oxidizing and decomposing ammonia or the condenser 19, to the reactor pressure vessel 1. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供能够除去从反应堆压力容器流出的氨的核电站。解决方案：核电厂配备有将反应器中含有氧化数为负的氮化合物注入冷却水的试剂注入装置61。植物具有催化剂部分，其由吸附氨的吸附剂和在流动通道3中被吸附剂吸附的氨氧化和分解的催化剂，其中在包括核燃料的反应堆压力容器1中产生的蒸汽通过，流动。该设备具有一种结构，其中将阳离子去除剂放置在给水加热器27的上游更远处，该加热器加热由冷凝器19冷凝的水，在流动通道29中的水流的上游，用于引导和供给通过氧化分解用于将氨或冷凝器19氧化和分解到反应堆压力容器1的装置5。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2003215289A ATOMIC POWER PLANT COMPRISING NEUTRAL-SUBSTANCE INJECTION SYSTEM 审中-公开
公开(公告)号：JP2003215289A
公开(公告)日：2003-07-30
申请号：JP2002009387
申请日：2002-01-18
申请人： HITACHI LTD
发明人： SAKAI MASANORI , TAKAMORI YOSHIYUKI , WATANABE RYUJI , KUNIYA JIRO , AKAMINE KAZUHIKO , WADA YOICHI , ISHIDA KAZUNARI
IPC分类号： G21D3/08 , G21D1/00
摘要： PROBLEM TO BE SOLVED: To provide a technique which lowers a corrosion potential irrespective of a periodical inspection or during an operation and which can obtain a high dose reduction effect by a short-period injection. SOLUTION: The injection system by which a neutral active substance formed in such a way that one or both of a component used to lower the corrosion potential of a plant structure material and a component used to lower a radiation dose are dispersed to a neutral substance is injected into cooling water inside a pressure vessel 8 of the atomic power plant is installed. COPYRIGHT: (C)2003,JPO

3. 发明专利

JP2003035798A Method for preventing corrosion of reactor 审中-公开
标题翻译：防止反应器腐蚀的方法
公开(公告)号：JP2003035798A
公开(公告)日：2003-02-07
申请号：JP2001224187
申请日：2001-07-25
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： WADA YOICHI , UETAKE NAOTO , ISHIDA KAZUNARI , TACHIBANA MASAHIKO , AKAMINE KAZUHIKO
IPC分类号： G21D3/08 , G21D1/00
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To restrain the occurrence and development of stress corrosion cracks (SCC) by accelerating the deterioration in electrochemical corrosion potential(ECP) due to hydrogen in an oxide film layer of a reactor structural material.
SOLUTION: At least one type of metal among Al, Mg, Mn and Mo is taken into a surface oxide film of the reactor structural material (stainless steel or a nickel-base alloy). The temperature in the injection of the metal is set at between 150°C and 270°C inclusive, and, as to the quantity of injected hydrogen, the ECP is set at -230 m Vvs.SHE or lower in the operation of one cycle. This invention activates the oxidization reaction of the hydrogen on the surface of the reactor structural material, accelerating the deterioration of the ECP even in the injection of a small quantity of the hydrogen and restraining the occurrence and development of the SCC of the reactor structural material more effectively than ever.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：通过加速由反应器结构材料的氧化膜层中的氢引起的电化学腐蚀电位（ECP）的劣化，来抑制应力腐蚀裂纹（SCC）的发生和发展。解决方案：将Al，Mg，Mn和Mo中的至少一种金属作为反应器结构材料（不锈钢或镍基合金）的表面氧化膜。金属注入温度设定在150摄氏度到270摄氏度之间，对于注入氢气的数量，ECP设定为-230米Vvs.SHE或更低一个周期本发明激活了反应器结构材料表面氢的氧化反应，即使在注入少量氢的同时加速了ECP的劣化，也抑制了反应堆结构材料SCC的发生和发展。比以往有效。

4. 发明专利

JP2002323595A STRESS CORROSION CRACKING RELIEVING METHOD OF NUCLEAR POWER PLANT IN-PILE STRUCTURE AND NUCLEAR POWER PLANT 失效
公开(公告)号：JP2002323595A
公开(公告)日：2002-11-08
申请号：JP2001131771
申请日：2001-04-27
申请人： HITACHI LTD
发明人： ISHIDA KAZUNARI , WADA YOICHI , UETAKE NAOTO , AKAMINE KAZUHIKO , NAKAMURA MASAHITO
IPC分类号： G21D3/08 , G21D1/00
摘要： PROBLEM TO BE SOLVED: To provide a stress corrosion cracking relieving method of a nuclear power plant in-pile structure and a nuclear power plant for reducing a using quantity of a platinum group element required for improving a hydrogen injection effect, facilitating the processing work, and reducing emission of radioactivity from an oxide film by reduction in ECP. SOLUTION: In the stress corrosion cracking relieving method of the nuclear power plant in-pile structure and the nuclear power plant, metallic oxide having a property of diffusing hydrogen adsorbed to a platinum group element compound along a surface is stuck on a surface of the in-pile structure, the platinum group element compound is formed on a surface of the metallic oxide and at least one of the inside, and chemicals for forming the metallic oxide and the platinum group element compound are injected into a recirculating system of a nuclear reactor.

5. 发明专利

JP2002131473A WATER-QUALITY CONTROL METHOD 失效
公开(公告)号：JP2002131473A
公开(公告)日：2002-05-09
申请号：JP2000332121
申请日：2000-10-26
申请人： HITACHI LTD
发明人： ISHIDA KAZUNARI , NAGASE MAKOTO , HOSOKAWA HIDEYUKI , UETAKE NAOTO , ANAZAWA KAZUMI
IPC分类号： G21D3/08
摘要： PROBLEM TO BE SOLVED: To provide a water-quality control method which restrains a radioactive substance from being stuck to a reactor core internal structure and to the surface of a pipe. SOLUTION: The radioactive substance which is stuck to at least a face coming into contact with reactor water in the reactor core internal structure or a face coming into contact with reactor water in the pipe is removed while a nuclear heating operation is stopped. Then, at least a metal organic compound complex or a metal oxide organic compound complex which has at least the adhesion suppression effect of the radioactive substance to the reactor core internal structure or the corrosion reduction effect of the reactor core internal structure is added to nuclear reactor water in a nuclear power plant before a rated output operation is performed after the radioactive substance has been removed. After that, the organic compound complex is decomposed.

6. 发明专利

JPH1194989A BOILING WATER REACTOR POWER PLANT AND ITS WATER QUALITY CONTROL METHOD 失效
公开(公告)号：JPH1194989A
公开(公告)日：1999-04-09
申请号：JP25651097
申请日：1997-09-22
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： AIZAWA MOTOHIRO , MOCHIZUKI KENTA , UETAKE NAOTO , ISHIDA KAZUNARI
IPC分类号： G21C17/02 , G21D3/08
摘要： PROBLEM TO BE SOLVED: To sufficiently reduce radioactivity concentration in reactor water by controlling iron concentration in feed water to a specific value of nickel concentration and controlling the copper concentration to a specific value of iron concentration. SOLUTION: In order to lower the radioactivity concentration in reactor water, the iron concentration in feed water is controlled to twice the nickel concentration and the copper concentration in the feed water is controlled to 1/1000 or higher of the iron concentration. By electrolyzing iron electrode 27 containing copper in the electrode, suspension solution of concentration ratio (Fe/Cu) of 1000 or lower is made and injected. The concentration of Fe and Cu in the electrolyte tank 26 is set by measuring the Fe and Cu concentration in the feed water, calculating each lacking quantity and controlling electrolyzing current. The mixture solution of Fe and Cu is guided to a concentration controlling tank 26 and injected in the feed water with an injection pump 32 after confirming the concentration. It is operated by sampling system water from a feed water heater outlet sampling line 20 and periodically checking objective concentration of Fe and Cu in the feed water being ensured.

7. 发明专利

JP2008051530A Elution suppression method for nickel and cobalt from structure material 有权
标题翻译：结构材料镍和钴的抑制方法
公开(公告)号：JP2008051530A
公开(公告)日：2008-03-06
申请号：JP2006225331
申请日：2006-08-22
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAGASE MAKOTO , HOSOKAWA HIDEYUKI , ISHIDA KAZUNARI , MORISAWA SATOSHI , SAKASHITA MOTOAKI , AIZAWA MOTOHIRO
IPC分类号： G21D1/00 , G21C3/34 , G21C5/00 , G21C7/10 , G21F9/00
CPC分类号： G21F9/005
摘要： PROBLEM TO BE SOLVED: To provide an elution suppression method of nickel and cobalt from a nuclear reactor structure material, capable of suppressing furthermore elution of nickel and cobalt which are the parent nuclides of a radioactive nuclide.
SOLUTION: The nuclear reactor structure material (for example, a spacer spring 32) is immersed into pure water in a treatment tank 5. The pure water is heated up to 90°C by a heater 7. Iron formate (iron(II) ion containing solution) in an iron formate tank 9, hydrogen peroxide in a hydrogen peroxide tank 11 and hydrazine in a hydrazine tank 13 are injected into a pipe and guided into the treatment tank 5, respectively. Injection of iron formate is performed, until the iron(II) ion concentration in the pure water becomes 200 ppm or higher. The pH is adjusted to be in the range of 5.5-9.0 by injection of hydrazine. A dense and firm magnetite coat, for suppressing elution of cobalt or the like from the nuclear reactor structure material, is formed on the surface of the nuclear reactor structure material by this treatment.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供来自核反应堆结构材料的镍和钴的洗脱抑制方法，能够抑制作为放射性核素的母体核素的镍和钴的进一步洗脱。解决方案：将核反应堆结构材料（例如，间隔弹簧32）浸入处理槽5中的纯水中。纯水通过加热器7加热至90℃。甲酸铁（铁（ II）离子溶液），过氧化氢罐11中的过氧化氢和肼罐13中的肼分别注入管道并引导到处理槽5中。进行甲酸铁的注入，直至纯水中的铁（II）离子浓度变为200ppm以上。通过注射肼将pH调节至5.5-9.0的范围内。通过这种处理，在核反应堆结构材料的表面上形成用于抑制钴等从核反应堆结构材料的洗脱的致密且牢固的磁铁矿涂层。版权所有（C）2008，JPO＆INPIT

8. 发明专利

JP2007017245A Method for mitigating stress corrosion cracking in structural material for nuclear power plant 有权
标题翻译：用于减轻核电厂结构材料应力腐蚀开裂的方法
公开(公告)号：JP2007017245A
公开(公告)日：2007-01-25
申请号：JP2005198212
申请日：2005-07-07
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ISHIDA KAZUNARI , WADA YOICHI , NAGASE MAKOTO , HOSOKAWA HIDEYUKI , NAKAMURA MASAHITO
IPC分类号： G21D1/00 , G21D3/08
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To improve integrity of a plant by suppressing increase in stress corrosion cracking sensitivity by suppressing increase in electric conductivity.
SOLUTION: In an operation of a boiling water nuclear power plant, a material for reducing the concentration of oxygen or hydrogen peroxide in reactor water by chemically reacting with the oxygen or hydrogen peroxide is injected into the reactor water. During stop of the operation, a layer of a compound having a spinel type structure composed of bivalent metal ions and trivalent iron ions is formed on a heat transfer surface of a feed water heater. Even when hydrogen injection or the like to the reactor water is stopped, increase in chrome ion concentration in the reactor water can be suppressed. As a result, the electric conductivity can be suppressed, and increase in sensitivity to stress corrosion cracking can be suppressed.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：通过抑制电导率的增加来抑制应力腐蚀开裂灵敏度的增加来提高植物的完整性。解决方案：在沸水核电站的操作中，通过与氧气或过氧化氢化学反应来降低反应器水中氧气或过氧化氢浓度的材料被注入反应器水中。在操作停止期间，在给水加热器的传热表面上形成具有由二价金属离子和三价铁离子组成的尖晶石型结构的化合物层。即使停止对反应器水进行氢气注入等，也可以抑制反应器水中的铬离子浓度的增加。结果，可以抑制导电性，并且可以抑制对应力腐蚀开裂的敏感性的增加。版权所有（C）2007，JPO＆INPIT

9. 发明专利

JP2006038684A Reactor water recovery device 审中-公开
标题翻译：反应器水回收装置
公开(公告)号：JP2006038684A
公开(公告)日：2006-02-09
申请号：JP2004220214
申请日：2004-07-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SATAKE MASATOSHI , AIZAWA MOTOHIRO , OWADA KAZUO , ISHIDA KAZUNARI
IPC分类号： G21C19/307 , G21D3/00 , G21F9/12
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To provide a reactor water recovery device decomposing quickly hydrogen peroxide contained in a nuclear reactor system or in reactor water and returning it to a desired place.
SOLUTION: This reactor water recovery device 12 wherein a catalyst having high decomposability of hydrogen peroxide formed by carrying a noble metal on activated carbon is installed on a reactor water system pipe 13 between a reactor well 9 and a condensate storage tank 4. When the reactor water is recovered from the reactor well 9 into the condensate storage tank 4, hydrogen peroxide included in the reactor water is decomposed, to thereby store water not including hydrogen peroxide into the condensate storage tank 4. Hereby, even if the reactor water stored in the condensate storage tank 4 is used for washing an ion exchange resin in a condensate purifier 5, there is no possibility of deteriorating the ion exchange resin, and since the reactor water is transferred quickly into the condensate storage tank 4, a periodical inspection time is shortened.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种反应器水回收装置，其中快速分解包含在核反应堆系统中或反应堆水中的过氧化氢并将其返回到期望的位置。解决方案：该反应器水回收装置12，其中通过在活性炭上载有贵金属而形成的过氧化氢分解性高的催化剂安装在反应器井9和冷凝水储存罐4之间的反应器水系管13上。当反应器水从反应器井9回收到冷凝水储存罐4中时，包含在反应器水中的过氧化氢被分解，从而将不包括过氧化氢的水储存在冷凝物储罐4中。因此，即使反应器水储存在冷凝水储存箱4中的蒸馏水用于在冷凝水净化器5中洗涤离子交换树脂，不会使离子交换树脂劣化，并且由于反应器水快速地进入冷凝水储存箱4，所以定期检查时间缩短。版权所有（C）2006，JPO＆NCIPI

10. 发明专利

JP2005207936A Method for reducing stress corrosion cracking, device for injecting chemical solution and nuclear power plant 有权
标题翻译：减少应力腐蚀开裂的方法，注入化学溶液和核电厂的装置
公开(公告)号：JP2005207936A
公开(公告)日：2005-08-04
申请号：JP2004015954
申请日：2004-01-23
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ISHIDA KAZUNARI , WADA YOICHI , NAGASE MAKOTO , TACHIBANA MASAHIKO , FUSE MOTOMASA
IPC分类号： G21C19/307 , G21D1/00 , G21D3/08
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To provide a technique for reducing stress corrosion cracking capable of improving the reducing capability of the stress corrosion cracking by injecting a chemical solution.
SOLUTION: A chemical solution injecting device is provided with a tank 3 for holding a chemical solution containing at least one of neutral chemical species and cationic chemical species, an anionic remover 11 provided in a chemical solution circulation flow channel 5 between the tank 3 and the anionic remover 11 and circulating the chemical solution to remove anionic impurities in the chemical solution, an anionic impurities concentration measuring unit 13 for detecting the concentration of the anionic impurities of the chemical solution circulating in the chemical solution circulation flow channel 5, a tank 21 for holding the chemical solution obtained by removing the anionic impurities, and an injecting flow channel 23 provided in a flow channel in which cooling water of a nuclear reactor for cooling by using light water as cooling water circulates and injecting the chemical solution circulated in the anionic remover in the tank 21. Thereby, since the chemical solution obtained by removing the anionic impurities is injected into the cooling water, the reducing capability of the stress corrosion cracking due to the injection of the chemical solution can be improved.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种降低应力腐蚀裂纹的技术，能够通过注入化学溶液来提高应力腐蚀开裂的还原能力。解决方案：化学溶液注入装置设置有用于容纳含有中性化学物质和阳离子化学物质中的至少一种的化学溶液的罐3，设置在罐之间的化学溶液循环流动通道5中的阴离子去除剂11 3和阴离子去除剂11，并循环化学溶液以除去化学溶液中的阴离子杂质;阴离子杂质浓度测量单元13，用于检测在化学溶液循环流动通道5中循环的化学溶液的阴离子杂质的浓度，用于保持通过除去阴离子杂质而获得的化学溶液的罐21和设置在流动通道中的注射流动通道23，其中通过使用淡水作为冷却水进行冷却的核反应堆的冷却水循环并注入循环的化学溶液因此，由于获得的化学溶液b 将除去阴离子杂质的方法注入冷却水中，可以提高由注入化学溶液引起的应力腐蚀开裂的还原能力。版权所有（C）2005，JPO＆NCIPI

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