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11. 发明专利

JP2004233228A Boiling water nuclear power plant and method for controlling water quality in it 审中-公开
公开(公告)号：JP2004233228A
公开(公告)日：2004-08-19
申请号：JP2003022976
申请日：2003-01-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HOSOKAWA HIDEYUKI , NAGASE MAKOTO , ISHIDA KAZUNARI , AIZAWA MOTOHIRO
IPC分类号： G21C19/307 , G21D1/00 , G21D1/02 , G21D3/08
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To make it possible to keep a plant dose rate low.
SOLUTION: This boiling water nuclear power plant, where the concentration of iron during a supply of water is set at 0.1ppb or lower, is so constituted that hydrogen can be poured. It is also preferable that the concentration of iron during the supply of water is set at 0.05ppb or lower. In a plant which operated in a condition where the concentration of iron during the supply of water was 0.1ppb or higher, moreover, the concentration of iron during the supply of water is lowered after removing iron and chromium accumulating in a reactor by conducting the chemical decontamination for all systems and, at the same time, the pouring of hydrogen is allowed to start. This shortens the residence time of cobalt on fuel rods and makes it possible to restrain the generation of cobalt 60.
COPYRIGHT: (C)2004,JPO&NCIPI

12. 发明专利

JP2006038483A Method of restraining radionuclide from being deposited onto nuclear power plant constitutive member, and film forming device 有权
标题翻译：从放置在核电厂构成部件上的放射性核素的方法和成膜装置
公开(公告)号：JP2006038483A
公开(公告)日：2006-02-09
申请号：JP2004214541
申请日：2004-07-22
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HOSOKAWA HIDEYUKI , NAGASE MAKOTO , ISHIDA KAZUNARI , WADA YOICHI , USUI NAOSHI , AIZAWA MOTOHIRO , FUSE MOTOMASA
IPC分类号： G21D1/00 , G21F9/00 , G21F9/06 , G21F9/12 , G21F9/28
CPC分类号： G21C19/42 , G21C17/0225 , G21F9/06 , G21F9/12 , G21F9/28
摘要： PROBLEM TO BE SOLVED: To effectively restrain a radionuclide from being deposited onto a nuclear power plant constitutive member. SOLUTION: The first chemical containing ferrous (II) ion, the second chemical for oxidizing the ferrous (II) ion to ferric (III) ion, and the third chemical for regulating a pH of a treating liquid mixed with the first and second chemicals to 5.5-9.0 are brought into contact with a surface of a metal member to form a ferrite coating film, during a period from a finishing stage of a decontaminating process for removing a contaminant formed on the surface of the metal member constituting the nuclear power plant up to time before a start-up of nuclear power plant, and the radionuclide is thereby restrained by the ferrite coating film from being deposited onto the surface of the metal member. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：有效地抑制放射性核素沉积在核电站构成部件上。解决方案：含有亚铁（II）离子的第一种化学物质是将亚铁（II）离子氧化成三价铁离子的第二种化学物质，以及用于调节与第一种和第在除去形成在构成核的金属构件的表面上的污染物的净化处理的整理阶段期间，将第二化学物质5.5-9.0与金属构件的表面接触以形成铁氧体涂膜发电厂在核电厂启动之前，由此被铁氧体涂膜抑制放射性核素沉积在金属部件的表面上。版权所有（C）2006，JPO＆NCIPI

13. 发明专利

JP2004340769A Disposing method and device of organic acid decontamination waste liquid 审中-公开
公开(公告)号：JP2004340769A
公开(公告)日：2004-12-02
申请号：JP2003138132
申请日：2003-05-16
申请人： Hitachi Ltd , Kurita Engineering Co Ltd , 栗田エンジニアリング株式会社 , 株式会社日立製作所
发明人： KAZAMA MASAHIKO , SATO YASUMASA , AIZAWA MOTOHIRO , KATAOKA ICHIRO
IPC分类号： G21F9/08
摘要： PROBLEM TO BE SOLVED: To provide a disposing method and a device of an organic acid decontamination waste liquid capable of removing efficiently disposable components such as water, an organic matter or the like from decontamination waste liquid without using a chemical or an ion exchange resin, reducing greatly the amount of generated waste, preventing diffusion of radioactive materials by confining the radioactive materials in one vessel, and disposing easily by mounting/dismounting a disposing vessel in a cassette type.
SOLUTION: The disposing vessel 1 is connected separably by couplings 7a, 7b, 7c, and the decontamination waste liquid 8 is introduced into the disposing vessel 1 and heated by heater 2. Non-condensable gas 10 is sucked by a pump P, and vaporization enrichment is performed by condensing the vapor or gas generated from the disposing vessel 1 by a condenser 3. The temperature of the heater 2 is controlled at a high temperature in a heat treatment process after enrichment, and the air is introduced to oxidize and decompose a deposit, and the disposing vessel 1 for storing the heat-treated material is separated, and the whole vessel is stored until the radiation in the heat-treated material is lowered.
COPYRIGHT: (C)2005,JPO&NCIPI

14. 发明专利

JP2004205245A Chemical decontamination method 有权
公开(公告)号：JP2004205245A
公开(公告)日：2004-07-22
申请号：JP2002371646
申请日：2002-12-24
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ISHIDA KAZUNARI , NAGASE MAKOTO , ANAZAWA KAZUMI , AIZAWA MOTOHIRO
IPC分类号： G21C17/003 , G01T1/167 , G21F9/12 , G21F9/28
CPC分类号： G21F9/30 , C23F15/00
摘要： PROBLEM TO BE SOLVED: To remove iron oxalate adhering to the surface of a metal material without prolonging processes for the entire decontamination work.
SOLUTION: A cation exchanger resin tower 7 is used to carry out a reduction decontamination process (9) for supplying a reduction decontaminant containing oxalic acid to a region 1 to be decontaminated on the surface of a metal member and decontaminating it and then to conduct reduction decontaminant decomposition processes (10) and (12) for decomposing the reduction decontaminant, the reduction decontaminant decomposition process is also interrupted (after a reduction decontaminant decomposition process A finishes) and, in an iron oxalate removal process (11), hydrogen peroxide is supplied from a hydrogen peroxide water tank 20 to the region 1 with a flow channel to the cation exchanger resin column 7 blocked with valves 103a and 103b closed.
COPYRIGHT: (C)2004,JPO&NCIPI

15. 发明专利

JP2007071800A Boiling water type nuclear power generation plant and its piping cleaning method 审中-公开
标题翻译：锅炉水型核能发电厂及其管道清洗方法
公开(公告)号：JP2007071800A
公开(公告)日：2007-03-22
申请号：JP2005261499
申请日：2005-09-09
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OWADA KAZUO , AIZAWA MOTOHIRO
IPC分类号： G21C17/00 , G21C19/307
摘要： PROBLEM TO BE SOLVED: To provide a method for cleaning stagnant water in an emergency core cooling water system of a nuclear power plant.
SOLUTION: An equalizing valve 19 is connected with an injection check valve 14 of the emergency core cooling system injection pipe 12 and a pipe for cleaning 101 is branched between upper and lower two step drain valves 21 provided to the drain pipe 20 connected with the equalizing pipe 18 of the equalizing valve 19 to connect to a reactor coolant purification system suction pipe 31 in the constitution. In regular inspection of the nuclear power plant, water in the emergency core cooling system injection pipe 12 is passed in the equalizing pipe 18, the drain pipe 20 and the pipe for cleaning 101 in turn together with reactor water with a reactor coolant cleaning system pump 32 by opening the equalizing valve 19. Thus, water is purified with a reactor coolant purification system equipment 33 and is returned to the reactor pressure vessel 1 by way of a reactor water supply system pipe 34.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种清洁核电站应急核心冷却水系统中的停滞水的方法。解决方案：平衡阀19与紧急芯冷却系统喷射管12的喷射止回阀14连接，清洗管101在分别连接到排水管20连接的上下两级排水阀21之间分支均压阀19的均压管18连接到反应堆冷却剂净化系统吸入管31。在定期检查核电站时，应急核心冷却系统注入管12中的水通过反应堆冷却剂清洁系统泵，在均压管18，排水管20和清洁管道101中与反应器水一起通过因此，用反应堆冷却剂净化系统设备33净化水，并通过反应器供水系统管34将其返回到反应堆压力容器1.版权所有（C）2007 ，JPO＆INPIT

16. 发明专利

JP2006201000A Stress corrosion crack alleviating method and apparatus 有权
标题翻译：应力腐蚀破坏方法和装置
公开(公告)号：JP2006201000A
公开(公告)日：2006-08-03
申请号：JP2005012222
申请日：2005-01-20
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： WADA YOICHI , ISHIDA KAZUNARI , TACHIBANA MASAHIKO , AIZAWA MOTOHIRO , SATAKE MASATOSHI
IPC分类号： G21D3/08 , G21C19/307 , G21D1/00
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To provide a method of extracting stress corrosion crack suppressing effect by hydrazine as much as possible by lowering the concentration of nitric acid and nitrous acid produced when a nitrogen compound such as ammonia produced by reaction of hydrazine with oxygen and hydrogen peroxide is further oxidized with reactor water.
SOLUTION: In a boiling water reactor into which at least one reducing agent is injected, a reducing agent injection unit having one of the function of transmitting a signal indicating the state of injecting the reducing agent and the function of receiving a signal transmitted by another reducing agent injection unit and indicating the state of injecting the reducing agent or both of the functions is employed as a device for injecting the reducing agent.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种通过降低当肼与氧反应产生的氮化合物如氨产生的硝酸和亚硝酸的浓度时尽可能多地提取肼的应力腐蚀裂纹抑制效果的方法并用反应器水进一步氧化过氧化氢。解决方案：在其中注入至少一种还原剂的沸水反应器中，具有发送指示注入还原剂的状态的信号的功能之一的还原剂注入单元和接收传输的信号的功能通过另一种还原剂注入单元并指示注入还原剂的状态或两者的功能被用作注入还原剂的装置。版权所有（C）2006，JPO＆NCIPI

17. 发明专利

JP2005291815A Corrosion thinning prevention method of carbon steel 有权
标题翻译：碳钢的腐蚀性预防方法
公开(公告)号：JP2005291815A
公开(公告)日：2005-10-20
申请号：JP2004104882
申请日：2004-03-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： WADA YOICHI , ISHIDA KAZUNARI , TACHIBANA MASAHIKO , AIZAWA MOTOHIRO , NAKAMURA MASAHITO
IPC分类号： G21C19/307 , G21D1/00 , G21D3/08
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To suppress fluidization accelerated corrosion of a carbon steel constituting a pipe system, when injecting a reducing nitrogen compound into a water flowing pipe system of a nuclear power plant.
SOLUTION: When the reducing nitrogen compound such as hydrazine 122 is injected into flowing water in carbon steel pipes 106, 110 in order to suppress stress corrosion crack of a structure material of a core 128 or the like of a nuclear reactor, an oxidizing agent such as oxygen 126 injected originally for suppressing the fluidization accelerated corrosion of the carbon steel is consumed by the hydrazine 122 or the like, to thereby generate the fluidization accelerated corrosion. As the countermeasure therefor, the oxidizing agent 127 of the quantity corresponding to the injection quantity of the reducing nitrogen compound such as hydrazine is injected into the pipes, and thereby the concentration of oxygen or the like in the pipes is maintained at a prescribed value, to thereby suppress the fluidization accelerated corrosion of the carbon steel.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：当将还原性氮化合物注入到核电站的水流管道系统中时，抑制构成管道系统的碳钢的流化加速腐蚀。解决方案：为了抑制核反应堆芯128等的结构材料的应力腐蚀开裂，将碳125等还原性氮化合物注入碳钢管106,110的流水中时，最初为了抑制碳钢的流化加速腐蚀而引入的氧气等氧化剂126被肼122等消耗，从而产生流化加速腐蚀。作为对策，将与肼等还原性氮化合物的喷射量对应的量的氧化剂127注入管内，由此将管内氧等的浓度维持在规定值，从而抑制碳钢的流化加速腐蚀。版权所有（C）2006，JPO＆NCIPI

18. 发明专利

JP2003033653A Organic acid decomposing catalyst and chemical decontamination method 有权
标题翻译：有机酸分解催化剂和化学除去方法
公开(公告)号：JP2003033653A
公开(公告)日：2003-02-04
申请号：JP2001224309
申请日：2001-07-25
申请人： Hitachi Eng Co Ltd , Hitachi Ltd , 日立エンジニアリング株式会社 , 株式会社日立製作所
发明人： KATAOKA ICHIRO , AIZAWA MOTOHIRO , ANAZAWA KAZUMI , NAGASE MAKOTO , ISHIDA KAZUNARI
IPC分类号： G21F9/06 , B01J23/22 , B01J23/42 , B01J23/46 , G21F9/28
摘要： PROBLEM TO BE SOLVED: To improve the performance of a catalyst to decompose a decontaminant containing an organic acid in order to reduce the load on an ion exchange resin and to decrease wastes by accompanying the chemical decontamination of radioactive deposits.
SOLUTION: In the decomposition of the organic acid which is the decontaminant using the catalyst attached additionally with noble metals, from 10 mesh (opening of sieve mesh 1.68 mm) to 20 mesh (opening of sieve mesh 0.84 mm) are found as optimum grain sizes. The organic acid after the decontamination can be decomposed with high efficiency by applying the catalyst of such grain sizes and the shortening of the decomposition time, the downsizing of facilities and the evading of the degradation in water quality by the deterioration of the ion exchange resin are made possible. The organic acid used for the chemical decontamination can be efficiency subjected to the decomposition treatment in a short period of time by using the catalyst of the grain sizes. In addition, not only an oxalic acid but other organic acids, etc., can be efficiently decomposed.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提高催化剂的性能，以分解含有机酸的去污剂，以减少离子交换树脂的负荷，并通过伴随放射性沉积物的化学去污来减少废物。解决方案：在使用附加贵金属的催化剂除去污染物的有机酸的分解中，从10目（筛网1.68mm）至20目（筛孔0.84mm的开孔）被发现为最佳粒度。去污后的有机酸可以通过应用这种晶粒尺寸的催化剂和缩短分解时间，设备的小型化以及通过离子交换树脂的劣化避免水质退化来高效分解。成为可能用于化学去污的有机酸可以通过使用粒度的催化剂在短时间内进行有效的分解处理。此外，不仅可以有效地分解草酸，而且其它有机酸等。

19. 发明专利

JP2006038811A Operation method of nuclear power plant 有权
标题翻译：核电厂的运行方法
公开(公告)号：JP2006038811A
公开(公告)日：2006-02-09
申请号：JP2004223415
申请日：2004-07-30
申请人： Hitachi Ltd , Ibaraki Hitachi Joho Service Kk , 株式会社日立製作所 , 茨城日立情報サ−ビス株式会社
发明人： FUSE MOTOMASA , USUI NAOSHI , HOSOKAWA HIDEYUKI , SATO YOSHIAKI , AIZAWA MOTOHIRO , NAGASE MAKOTO
IPC分类号： G21D1/00 , G21C19/307 , G21D3/08
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To provide an operation method for a nuclear power plant containing a procedure for suppressing radioactive components produced during operation to adhere on the pipes and components and to raise dose rate of pipes and components. SOLUTION: The operation method for nuclear power plant is to positively inject oxidation agent such as hydrogen peroxide at the start up of the nuclear power plant or in the first cycle after decontamination of pipes and components based on the new knowledge that later radioactive adhesion can be suppressed by forming a coating on the surface of pipes and components in an environment where oxidation agent exists at the initiation of operation of the nuclear power plant. In the operation method for nuclear power plant, the injection of reduction agent such as hydrogen used for suppressing oxidation agent such as solved hydrogen peroxide is purposely delayed at the start up. Iron concentration is suppressed low not to disturb the coating production function of the oxidation agent and the iron concentration is raised after forming the coating in the operation method. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种核动力装置的操作方法，其包含用于抑制在操作中产生的放射性成分附着在管道和部件上并提高管道和部件的剂量率的程序。解决方案：核电厂的运行方式是在核电厂启动时或第一个周期内积极注入氧化剂如过氧化氢，基于管道和部件的净化，基于后来放射性的新知识通过在核动力装置运转开始时存在氧化剂的环境中的管道和部件的表面上形成涂层，可以抑制粘附。在核电厂的运行方法中，在启动时故意延迟注入用于抑制氧化剂如溶解过氧化氢的氢等还原剂的注入。铁浓度被抑制低，不影响氧化剂的涂层生产功能，并且在操作方法中形成涂层后铁浓度升高。版权所有（C）2006，JPO＆NCIPI

20. 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

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