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31. 发明专利

JPH07218689A OPERATION METHOD OF BOILING WATER REACTOR POWER PLANT AND BOILING WATER REACTOR POWER PLANT 失效
公开(公告)号：JPH07218689A
公开(公告)日：1995-08-18
申请号：JP1256994
申请日：1994-02-04
申请人： HITACHI LTD
发明人： YAMANE KOICHI , AKAMINE KAZUHIKO , ASAKURA YAMATO , OSUMI KATSUMI , HATTORI SHIGEO , ANDO MASASHI
IPC分类号： G21D1/00 , G21D3/08
摘要： PURPOSE:To exactly control the effective oxygen concentration at reactor bottom by using the conventional sampling line with easy maintenance of monitor reliability and component in the process of suppressing SCC(stress corrosion cracking) of reactor bottom material by hydrogen injection. CONSTITUTION:The correlation between the effective oxygen concentration in reactor recirculation system and that in the reactor bottom is developed in advance and it is set in a controller 12. When the effective oxygen concentration in reactor recirculation system 51 is measured with an oxygen monitor 11 and its signal is input to the controller 12, the controller 12 calculates the effective oxygen concentration in the reactor bottom based on the correlation and controls the opening of a control valve 36 to control the injection hydrogen amount from a hydrogen injection equipment 55 to a water supply system 50. By this, the effective oxygen concentration in the reactor bottom is controlled within a specified range.

32. 发明专利

JPH0792292A METHOD AND APPARATUS FOR MONITORING AND DIAGNOSING SOUNDNESS OF PLANT EQUIPMENT, METHOD AND APPARATUS FOR DECIDING MAINTENANCE AND INSPECTION TIME OF PLANT EQUIPMENT, AND NUCLEAR POWER PLANT 失效
公开(公告)号：JPH0792292A
公开(公告)日：1995-04-07
申请号：JP23496193
申请日：1993-09-21
申请人： HITACHI LTD
发明人： KATO TAKAHIKO , ANDO MASASHI , OSUMI KATSUMI , HORIUCHI TETSUO , ASAKURA YAMATO , AKAMINE KAZUHIKO
IPC分类号： G01N27/06 , C02F1/00 , G08B31/00 , G21C17/003 , G21C17/02
摘要： PURPOSE:To precisely estimate the occurrence time of the trouble of a plant equipment coming into contact with circulating water in a nuclear power plant or the like and to execute the maintenance and inspection of the plant equipment so as to match the planned shut-down time (the periodic inspection time) of a plant before the trouble of the plant equipment occurs while the maximum sound usage period of the plant apparatus is being grasped and held. CONSTITUTION:Change in a water quality inside a recirculation pump 114 due to the corrosion by a circulating water, which is caused in a constituent component for the pump is measured by a conductivity meter 42 or a pH meter. The time elapsed until the change in the quality after the start of the use of the pump is computed, the time is compared with the correlation between the trouble occurrence time which has been prepared in advance and the time elapsed until the change in the water quality is caused, and the occurrence time of the trouble is estimated. In addition, when the estimated occurrence time of the trouble exists between the nth periodic inspection and the (n+1)th periodic inspection of the plant, the time of the nth periodic inspection is set as the maintenance inspection time of the plant equipment.

33. 发明专利

JPH0425798A CONDENSATE PURIFICATION SYSTEM 失效
公开(公告)号：JPH0425798A
公开(公告)日：1992-01-29
申请号：JP13108290
申请日：1990-05-21
申请人： HITACHI LTD
发明人： AKAMINE KAZUHIKO , SAKURAI MIKIO , OCHIAI KANEHIRO , SAWA TOSHIO , KAZAMA SEIICHI , SHINDO KIICHI
IPC分类号： G21C19/307 , C02F1/42 , C02F1/44 , G21F9/06 , G21F9/12
摘要： PURPOSE:To rationalize the condensate purification system and to reduce the cost of facilities by using a hollow yarn film filter which has ion exchanging performance and installing a condensate deminineralizer in a by-pass line. CONSTITUTION:In the condensate purification system 8, an opening/closing valve 16 is open, an opening/closing valve 17 is closed, and the condensate deminieralizer 15 is placed in a stand-by state in normal operation. Then a condensate which is recovered by a condenser 4 is sent by a condensate 7 directly to the entrance side of the hollow yarn film filter 13 which has the ion exchanging performance and the majority of the condensate flows to a filter 13 to remove both a clad and metallic impurities in the condensate. Further, part of it flows through the by-pass line 18 and the ion density in the fed water is controlled. In case of a sea water leak, a conductivity measuring instrument 20 closes the valve 16 and opens the valve 17 and turns on the small-capacity deminieralizer 15 according to a necessary extent; and the all-amount processing of the condensate is performed to remove generated ions, etc., and direct influence upon a contact filter 13 is prevented.

34. 发明专利

JPH0385495A NUCLEAR POWER PLANT 失效
公开(公告)号：JPH0385495A
公开(公告)日：1991-04-10
申请号：JP22150089
申请日：1989-08-30
申请人： HITACHI LTD
发明人： AKAMINE KAZUHIKO , IBE HIDEFUMI
IPC分类号： G21C17/02 , G21D3/08
摘要： PURPOSE:To intend improvement of a corrosive environment at a reactor bottom part by controlling an amount of hydrogen injection along with concurrently sampling reactor water at a nuclear reactor bottom to monitor a corrosive environment. CONSTITUTION:A branch line is provided between a nuclear reactor drain valve 19 on a drain line 12 and a nuclear reactor isolation valve 20 provided at an upstream side of the valve 19, and is constituted so as to make reactor water which passes through a corrosive environment monitor 1, return into a nuclear reactor 4. Measured data by the monitor 1 are fed to a hydrogen injection device 2 of a feed water system by a controller 3. Incidentally, the valve 20 is constituted to open, to introduce the water into the monitor 1 and to enable measurement of water quality only when the corosive environment is monitored. In this way, an amount of the hydrogen injection from the device 2 to a reactor core, can be controlled along with direct monitoring of a nuclear reactor bottom part, in other words, the water quality at a lower part of the reactor core and the corrosive environment there, and therefore the corrosive environment can be effectively mitigated.

35. 发明专利

JPS62129793A BOILING WATER TYPE NUCLEAR POWER PLANT 失效
公开(公告)号：JPS62129793A
公开(公告)日：1987-06-12
申请号：JP26928185
申请日：1985-12-02
申请人： HITACHI LTD
发明人： AKAMINE KAZUHIKO , OSUMI KATSUMI
IPC分类号： G21C19/307 , G21C19/30

36. 发明专利

JPS61102597A Boiling water type nuclear power plant 失效
公开(公告)号：JPS61102597A
公开(公告)日：1986-05-21
申请号：JP22495184
申请日：1984-10-25
申请人： Hitachi Ltd
发明人： KOBAYASHI MASATO , AKAMINE KAZUHIKO , OSUMI KATSUMI
IPC分类号： G21D3/08
CPC分类号： Y02E30/40

37. 发明专利

JPS6018700A PRESSURE WATER PIPELINE SYSTEM OF PLANT 失效
公开(公告)号：JPS6018700A
公开(公告)日：1985-01-30
申请号：JP12337883
申请日：1983-07-08
申请人： HITACHI LTD
发明人： AKAMINE KAZUHIKO , OOSUMI KATSUMI , OCHIAI KANEHIRO
IPC分类号： E03B7/02 , F17D1/08 , F17D1/14 , G21D1/00 , G21D1/02
摘要： PURPOSE:To reliably supply a fixed high-pressure water by diverging a pipeline from a high-pressure water supply pump to be connected to pressure water requiring apparatus. CONSTITUTION:A high-pressure water pump 9 is operated to feed water to high- pressure water requiring apparatus such as a decontaminating apparatus 5 of atomic power generation plant, a terminal nozzle 4 of a hydraulic test apparatus 6 and the like to conduct an assigned work or a hydraulic test. In case of making a hydraulic test, the hydraulic test apparatus 6 is installed at a designated temporary construction position, and connected to the terminal nozzle 4 for a temporary construction apparatus, which is disposed for a floor 14, to conduct a fixed hydraulic test. In this case, when an open and close valve 13 of the terminal nozzle 4 is opened unexpectedly to jet high-pressure water, the high-pressure water strikes against only the floor 14, and there is no possibility that a worker or peripheral apparatus will suffer from jetting of high-pressure water.

38. 发明专利

JPS5876115A METHOD AND APPARATUS FOR PURIFYING LIQUID 失效
公开(公告)号：JPS5876115A
公开(公告)日：1983-05-09
申请号：JP17463481
申请日：1981-11-02
申请人： HITACHI LTD
发明人： AKAMINE KAZUHIKO , EBARA KATSUYA , ITOU KAZUYUKI , MITANI SHINJI
IPC分类号： B01D35/06 , B03C1/025 , B03C1/033 , G21C19/307
摘要： PURPOSE:To simplify the cooling system of an electric coil, in a boiling water atomic power plant, by using a liquid to be treated passing through a container filled with a magnetic filter matrix in cooling the electromagnetic coil of an electromagnetic filter. CONSTITUTION:Steam generated in the pressure vessel of a nuclear reactor is sent to a turbine 2 through a main steam pipe 2 and condensed in a condenser 4. While this condensed water is pressurized by a pump 6, it is passed through the matrix of an electromagnetic filter 7 to remove clad therein and passed through the ion exchange resin of a desalting vessel 19 to remove cations and anions therein and the treated water is again supplied to the pressure vessel 1 of the nuclear reactor while pressurized by a pump 20 and heated by a heater 21. The part of the purified cooled water emitted from the desalting vessel 19 is introduced into the electromagnetic coil 13 of the electromagnetic filter 7 through an arranged pipe 22A by a pump 23 to carry out the cooling of the electromagnetic coil 13. Cooled water is again sent to the desalting vessel 19 through an arranged pipe 22B.

39. 发明专利

JP2005018146A Comparison, retrieval and translation system for laws/standards/criteria of respective countries 审中-公开
标题翻译：法律/标准/相关国家标准的比较，检索和翻译系统
公开(公告)号：JP2005018146A
公开(公告)日：2005-01-20
申请号：JP2003178226
申请日：2003-06-23
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TAKAMURA NORIYUKI , AKAMINE KAZUHIKO
IPC分类号： G06F17/30 , G06F17/28
摘要： PROBLEM TO BE SOLVED: To provide a comparison, retrieval and translation system for laws/standards/criteria of a plurality of countries. SOLUTION: This system includes a law/standard/criterion DB 101 hierarchically storing the laws/standards/criteria of the plurality of countries; a term DB 102 including a general dictionary file 103 and a technical term file 104 of a specific business field; a law/standard/criterion retrieval means 111 retrieving a law/standard/criterion name present in the same hierarchy as a comparison source inside the DB 101 on the basis of a country name of a comparison destination, and a country name and a law/standard/criterion name of the comparison source; a block data retrieval means 112 retrieving block data inside the laws/standards/criteria of the comparison source including a keyword to display a block name, translating the keyword of the comparison source into a language of the comparison destination, retrieving all the block data including the translated keyword inside the laws/standards/criteria of the selected comparison destination present in the same hierarchy, and displaying the block name; and a block sentence display/translation means 113 displaying/translating and displaying a block sentence and the block name of the selected block data. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为多个国家的法律/标准/标准提供比较，检索和翻译系统。
解决方案：该系统包括分级存储多个国家的法律/标准/标准的法律/标准/标准DB 101; 术语DB 102，包括通用字典文件103和特定业务领域的技术术语文件104; 法律/标准/标准检索装置111根据比较目的地的国家名称和国家名称和法律/标准/标准检索装置111检索与DB 101内的比较源在同一层级中存在的法律/标准/标准名称，比较来源的标准/标准名称; 块数据检索装置112检索比较源的法律/标准/标准内的块数据，其包括关键字以显示块名称，将比较源的关键字转换为比较目的地的语言，检索包括所选择的比较目的地的法律/标准/标准中的已翻译的关键字存在于同一层级中，并显示该块名称; 以及块语句显示/翻译装置113，显示/翻译和显示块语句以及所选择的块数据的块名称。版权所有（C）2005，JPO＆NCIPI

40. 发明专利

JP2003149385A NUCLEAR POWER PLANT AND ITS OPERATION METHOD 审中-公开
公开(公告)号：JP2003149385A
公开(公告)日：2003-05-21
申请号：JP2001344543
申请日：2001-11-09
申请人： HITACHI LTD , HITACHI KYOWA ENG CO LTD
发明人： NAKAMURA MASAHITO , AKAMINE KAZUHIKO , OSUMI KATSUMI , ISHIDA KAZUNARI , SUZUKI KAZUNOBU
IPC分类号： G21C19/307 , C02F1/46 , C02F1/62 , C02F1/72 , G21D3/08
摘要： PROBLEM TO BE SOLVED: To reduce radioactivity of reactor water. SOLUTION: An electrolyzation tower 27 for gradually electrolyzing iron with low current density (a current value per unit area of an iron plate electrode) of 0.02 A/cm or less and an iron feeding device composed of including an oxidizing tower 29A for oxidizing, by hydrogen peroxide, iron ions produced in the electrolyzation tower 27 and an iron crud thereafter turned into the crud are installed. The iron ions produced in the electrolyzation tower 27 and the iron crud thereafter turned into the crud are oxidized by hydrogen peroxide in the oxidizing tower 29A, and the iron ions and the iron crud thus oxidized are fed to a water feeding system of a nuclear reactor.

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