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1. 发明专利

JPH10142363A FUEL ROD AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JPH10142363A
公开(公告)日：1998-05-29
申请号：JP29481096
申请日：1996-11-07
申请人： HITACHI LTD , HITACHI NUCLEAR ENG
发明人： UETAKE NAOTO , ISHIDA KAZUNARI , KONDO MASAYOSHI , HOSOKAWA HIDEYUKI , ASAKURA YAMATO , YASUDA TAKAYOSHI
IPC分类号： G21C3/06 , C25D11/00 , G21C20060101 , G21C3/07 , G21C3/20 , G21C3/30 , G21C21/02
摘要： PROBLEM TO BE SOLVED: To immobilize a radioactive substance in reactor water without increasing a manufacturing cost by forming an oxide film on the outer surface of a cladding tube under conditions where a specific DC voltage is applied in the electrolyte of neutral salt. SOLUTION: A metal frame 13 where a plurality of cladding tubes 1 are arranged is suspended in a conductive anode oxide bath 10 with an electrolyte 11 containing, for example, 0.1% boric acid ammonium. The upper edge of the covering pipe 1 is connected to the metal frame 13, and a watertight plastic plug 14 is provided at the lower edge of the cladding tube 1. For example, a 300V DC voltage is applied to the cladding tube 1 for five minutes that is an anode, thus performing the anode oxidation of the outer surface of the cladding tube 1. After the anode oxidation, the cladding tube 1 is withdrawn from the anode oxide bath 10 and is washed before shifting to an edge part cutting process. Although a part without any oxide film is formed at the upper edge part of the cladding tube 1 by this method, the area of this part is small, so that the function for immobilizing a radioactive substance in a reactor water onto the outer surface of the cladding tube 1 can be obtained fully.

2. 发明专利

JP2007232432A Chimney of natural circulation type boiling water reactor 审中-公开
标题翻译：自然循环型锅炉水反应器CHIMNEY
公开(公告)号：JP2007232432A
公开(公告)日：2007-09-13
申请号：JP2006051787
申请日：2006-02-28
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 , WATANABE ATSUSHI
IPC分类号： G21D1/00 , G21C15/02 , G21C15/26
CPC分类号： C23F15/00 , C23F11/18 , C23F11/185
摘要： PROBLEM TO BE SOLVED: To provide a chimney of a natural circulation type boiling water reactor capable of suppressing exposure of an operator by a radiation at a chimney exchanging time or the like by a pressure drop caused by adhesion of a corrosion product or by adhesion of a radioactive corrosion product. SOLUTION: This chimney 11 is installed on the core of the natural circulation type boiling water reactor. The chimney 11 has a layer 81 comprising a titanium oxide or a zirconium oxide on at least a part of a liquid-contact surface 81a. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种天然循环型沸水反应器的烟囱，其能够通过由腐蚀产物的粘附引起的压降在烟囱更换时间等下通过辐射来抑制操作者的暴露，或者通过粘附放射性腐蚀产物。解决方案：该烟囱11安装在自然循环式沸水反应堆的核心上。烟道11具有在液体接触表面81a的至少一部分上包含氧化钛或氧化锆的层81。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2007182604A Method for inhibiting corrosion of carbon steel, and apparatus therefor 有权
标题翻译：用于抑制碳钢腐蚀的方法及其装置
公开(公告)号：JP2007182604A
公开(公告)日：2007-07-19
申请号：JP2006001256
申请日：2006-01-06
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAGASE MAKOTO , HOSOKAWA HIDEYUKI , MORISAWA SATOSHI , SAKASHITA MOTOAKI , YOKOTA KATSUO , KATAOKA ICHIRO
IPC分类号： C23F15/00 , C23C26/00 , G21C19/307 , G21D1/00
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To provide a method more suitable for inhibiting corrosion of a carbon steel member constituting a plant and also to provide an apparatus for implementing the method.
SOLUTION: In this method for inhibiting corrosion of carbon steel, a ferrite film is formed by bringing the followings into contact with the surface of a water-contacting part of a carbon steel member constituting a plant: a treatment solution containing iron (II) ions; a second oxidizing agent for oxidizing at least a part of the iron (II) ions into iron (III) ions; and a pH adjuster for adjusting the pH of a treatment solution as a mixture of a first agent and the above second agent to a value ranging from 5.5 to 9.0.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种更适合于抑制构成植物的碳钢构件的腐蚀的方法，并提供一种实施该方法的装置。解决方案：在这种用于抑制碳钢腐蚀的方法中，通过使构成植物的碳钢构件的与水接触的部分的表面相接触来形成铁氧体膜：含铁的处理溶液（ II）离子; 用于将至少一部分铁（II）离子氧化成铁（III）离子的第二氧化剂; 以及用于将作为第一剂和上述第二剂的混合物的处理溶液的pH调节至5.5〜9.0的pH调节剂。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2007033352A Method for zinc supply to reactor 审中-公开
标题翻译：锌供应给反应器的方法
公开(公告)号：JP2007033352A
公开(公告)日：2007-02-08
申请号：JP2005219994
申请日：2005-07-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： AIZAWA MOTOHIRO , HOSOKAWA HIDEYUKI , ISHIDA KAZUNARI
IPC分类号： G21D3/08 , G21C19/307 , G21D1/00 , G21D1/02
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To provide a method for zinc supply to a reactor capable of drastically reducing additional placing cost of zinc supply facility for suppressing adhesion of radioactive materials on inner surface of piping and component containing radioactive materials, operation and maintenance cost and management cost.
SOLUTION: This method for zinc supply is for a boiling water reactor power plant having a boiling water reactor 1, steam turbines 3 and 4 for driving a generator with the steam, a condenser 5 for cooling the steam having driven the steam turbine 4 returning to water, a condensate filter 7 for purifying the condensate water, a condensate demineralizer 8 and supply water heaters 10 and 12 for heating purified water and returning to the reactor. The zinc concentration in the condensate filter 7 outlet water is raised by precoating particles containing zinc in the filtering surface of processed water inlet side of the condensate filter 7. Part of condensate water flow passing the condensate filter 7 is bypassed with a condensate filter bypass valve and a bypass pipe 25, iron concentration in condensate filter 7 outlet water is increased and zinc is supplied to the reactor 1.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够大大降低锌供应设备的附加放置成本的锌供应方法，用于抑制放射性物质在管道内部表面和含有放射性物质的成分的附着，操作和维护成本和管理成本。解决方案：这种锌供应方法是用于具有沸水反应器1，用于驱动具有蒸汽的发电机的蒸汽轮机3和4的沸水反应堆发电厂，用于冷却已经驱动汽轮机的蒸汽的冷凝器5 4返回水中，用于净化冷凝水的冷凝水过滤器7，冷凝水脱盐机8和用于加热净化水并返回到反应器的供水热水器10和12。冷凝水过滤器7出水中的锌浓度通过在冷凝水过滤器7的处理水入口侧的过滤表面中预涂涂覆锌的颗粒来提高。通过冷凝物过滤器7的冷凝水流的一部分用冷凝器过滤器旁通阀旁路和旁通管25，冷凝过滤器7出口水中的铁浓度增加，并且向反应器1供应锌。版权所有（C）2007，JPO＆INPIT

5. 发明专利

JP2007024644A Adhesion control method of radionuclide on component member of nuclear power plant and film forming method 有权
标题翻译：核电厂组件成员和成膜方法中放射性核素的粘合控制方法
公开(公告)号：JP2007024644A
公开(公告)日：2007-02-01
申请号：JP2005206017
申请日：2005-07-14
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： G21D3/08 , G21C19/307 , G21D1/00
CPC分类号： G21C13/087 , C23F15/00 , G21C19/00 , G21Y2002/201 , G21Y2004/40 , Y02E30/40
摘要： PROBLEM TO BE SOLVED: To provide an adhesion control method of radionuclides on a component member of a nuclear power plant.
SOLUTION: During the period from the time of finishing a decontaminating process of removing contaminants formed on the surface of a metallic component member of a nuclear power plant until the time of starting the nuclear power plant, a first chemical containing iron (II) ions, a second chemical for oxidizing the iron (II) ions into iron (III) ions and a third chemical for conditioning the pH of a treatment solution made by mixing the first chemical and the second chemical to 5.5-9.0 are blended in this order, and the resulting mixture is brought into contact with the surface of the metallic member to form a ferrite film. The ferrite film thus formed can inhibit radionuclides from adhering to the surface of the metallic component.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供核电站的部件上的放射性核素的粘附控制方法。解决方案：在完成去除在核电站的金属部件的表面上形成的污染物去除净化处理之前，直到启动核电厂为止，第一种含有铁的化学品（II ）离子，用于将铁（II）离子氧化成铁（III）离子的第二种化学物质和用于调节通过将第一种化学品和第二种化学物质混合制备的处理溶液的pH调节为5.5-9.0的第三种化学品混合在此使所得混合物与金属构件的表面接触以形成铁氧体膜。由此形成的铁氧体膜可以抑制放射性核素附着在金属成分的表面。版权所有（C）2007，JPO＆INPIT

6. 发明专利

JP2005061846A Method and device for cleaning jet pump 审中-公开
标题翻译：用于清洁喷射泵的方法和装置
公开(公告)号：JP2005061846A
公开(公告)日：2005-03-10
申请号：JP2003207240
申请日：2003-08-12
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAGASE MAKOTO , HOSOKAWA HIDEYUKI , ISHIDA KAZUNARI , AIZAWA MOTOHIRO , KATAOKA ICHIRO , YOKOTA KATSUO
IPC分类号： G21C15/25 , G21C19/02 , G21F9/28
CPC分类号： Y02E30/31
摘要： PROBLEM TO BE SOLVED: To provide a method for cleaning a jet pump which makes it possible to shorten a regular inspection period even if the work for cleaning the jet pump is carried out during the regular inspection period.
SOLUTION: An inlet mixer is detached from the jet pump, is moved to a fuel storage pool and is cleaned there. The mixer is moved from the pool and is set up in the jet pump. By the work for removing scale piled up on the inner surface of the jet pump in the fuel pool or a dry separator pool, the work for a regular inspection can be carried out in tandem with that for cleaning the jet pump. This makes it possible to restrain the extension of the regular inspection period.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于清洁喷射泵的方法，即使在定期检查期间执行用于清洁喷射泵的工作，也能够缩短定期检查期间。
解决方案：入口混合器与喷射泵分离，移动到燃料储存池并在那里清洁。混合器从池中移动并设置在喷射泵中。通过在燃料池或干式分离池的喷射泵的内表面上移除垢的工作，可以与用于清洗喷射泵的工作一起进行定期检查。这样可以限制定期检查期限的延长。版权所有（C）2005，JPO＆NCIPI

7. 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

8. 发明专利

JP2001305276A OPERATING METHOD OF NUCLEAR POWER PLANT, NUCLEAR POWER PLANT, AND WATER QUALITY CONTROL METHOD FOR NUCLEAR POWER PLANT 失效
公开(公告)号：JP2001305276A
公开(公告)日：2001-10-31
申请号：JP2000122124
申请日：2000-04-24
申请人： HITACHI LTD , TOKYO ELECTRIC POWER CO
发明人： TAKAMORI YOSHIYUKI , SAKAI MASANORI , ASAKURA YAMATO , NAKAMURA MASAHITO , HOSOKAWA HIDEYUKI , SUZUKI YOSHIO , HAYASHI KOJI
IPC分类号： G21C17/02 , G21C19/28 , G21D1/00 , G21D3/08
摘要： PROBLEM TO BE SOLVED: To reduce the ECP of a metallic structural material constituting a nuclear reactor in a nuclear power plant to minimize the potential of IGSCC by injecting such a small quantity of hydrogen as not to increase a main steam system dosage rate, to facilitate the management, and to prevent the increase in operation cost. SOLUTION: In this nuclear reactor plant, zirconium hydroxide and hydrogen are injected into reactor cooling water to reduce the corrosion potential of the metallic structural material, whereby the stress corrosion and crack of the metallic structural material to make contact with the reactor cooling water is suppressed.

9. 发明专利

JPH0720277A REACTOR WATER CONTROL METHOD FOR BWR PLANT, LOW RADIOACTIVE CONCENTRATION REACTOR WATER BWR PLANT AND FUEL CLADDING TUBE FOR BWR 失效
公开(公告)号：JPH0720277A
公开(公告)日：1995-01-24
申请号：JP16356393
申请日：1993-07-01
申请人： HITACHI LTD
发明人： UETAKE NAOTO , KONDO MASAYOSHI , NAGASE MAKOTO , HOSOKAWA HIDEYUKI , HARA TERUO , ASAKURA YAMATO , OSUMI KATSUMI , AKAMINE KAZUHIKO , YAMANE KOICHI
IPC分类号： G21C3/06 , G21C17/022 , G21C19/30 , G21C19/307 , G21D1/00 , G21D3/08
摘要： PURPOSE:To allow efficient reduction of radioactivity in reactor water even if fuel rods, to which metal ions scarcely adhere, are loaded by accelerating adhesion of crud to a newly loaded fuel and stopping the adhering operation of clad when a predetermined target adhesion is reached. CONSTITUTION:When a pressure vessel 10 of reactor is loaded with a new Zr liner fuel 13 and the operation is started, an electrolytic iron injector 14 is operated simultaneously to produce iron crud. Electrolytic iron is injected 15 into supply water while sustaining the injection concentration at 2ppb and the injection is stopped when the total quantity of iron reaches 5X10 g/cm the sum of surface area of all newly loaded fuel rods. Furthermore, an anion-exchange resin in a desalting condenser 5 is partially rendered to Na type and the condensate is passed. The pH of supply water is then increased to 7-9 and the operation is sustained for a while even after the injection of iron crud is interrupted. Water supply to a resin tower is then stopped and switching is made to other resin tower and a cycle of operation is ended while lowering the pH below 7. Consequently, metal ions adhere well to the fuel and the radioactivity in the reactor water is reduced.

10. 发明专利

JP2007232421A Natural circulation type boiling water reactor and its handling method 有权
标题翻译：自然循环型锅炉水反应器及其处理方法
公开(公告)号：JP2007232421A
公开(公告)日：2007-09-13
申请号：JP2006051501
申请日：2006-02-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： WATANABE ATSUSHI , WADA YOICHI , NAGASE MAKOTO , ISHIDA KAZUNARI , HOSOKAWA HIDEYUKI , HIROKAWA FUMIHITO , TSUBAKI MASAAKI , TAKAHASHI SHIRO
IPC分类号： G21C5/00 , G21C15/02
CPC分类号： G21C1/084 , G21C15/00 , G21Y2002/402 , G21Y2004/30 , Y02E30/31
摘要： PROBLEM TO BE SOLVED: To provide a natural circulation type boiling water reactor equipped with a chimney easily dismountable from a reactor pressure vessel, capable of reducing welded zones compared with the chimney of a conventional natural circulation type boiling water reactor.
SOLUTION: In this natural circulation type boiling water reactor 1, a plurality of square tubes 11b constitute the chimney 11. Namely, each of the plurality of square tubes 11b partitions each passage of a coolant over the core. Therefore, in the chimney 11 of the natural circulation type boiling water reactor 1, welded zones can be reduced, because each edge of four corners is not required to be welded in each passage, differently from the case wherein a coolant passage is partitioned by a plate material welded integrally such as a grid-like passage bulkhead in the conventional natural circulation type boiling water reactor.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种具有烟囱的自然循环型沸水反应器，该反应堆容易从反应堆压力容器中拆卸，与传统的自然循环型沸水反应器的烟囱相比，能够减少焊接区域。解决方案：在这种自然循环型沸水反应器1中，多个方管11b构成烟囱11.即，多个方管11b中的每一个分别在芯上通过冷却剂。因此，在自然循环式沸水堆1的烟囱11中，由于在每个通路中不需要焊接四个角的每个边缘，所以可以减少焊接区域，其中冷却剂通道被在常规的自然循环型沸水反应堆中整体焊接如栅格状通道隔板的板材。版权所有（C）2007，JPO＆INPIT

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