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1. 发明专利

JPH11145956A LOCAL COMMUNICATION SYSTEM EQUIPMENT 失效
公开(公告)号：JPH11145956A
公开(公告)日：1999-05-28
申请号：JP31240997
申请日：1997-11-13
申请人： TOSHIBA ENGINEERING CO , ES TOSHIBA ENGINEERING KK
发明人： KOBAYASHI MINORU , SATO MASAHIRO , KATO HIROYASU , KURAMITSU KIMINORI , MOMOHARA HIROTAKA , ICHIHARA TAKURO
IPC分类号： H04L12/18 , H04M11/08 , H04N21/214 , H04N21/488 , H04N7/173
摘要： PROBLEM TO BE SOLVED: To surely and speedily transmit the report of local information to all the residents in that area at low cost in a simple configuration and to enable the local resident to immediately recognize emergency abnormality even when such abnormality occurs. SOLUTION: A host computer 7 at a transmission base 6 is connected through a general communication network 5 to information terminal equipment 3 provided for every local resident home. The host computer 7 transmits the local information through the general communication network 5. When the local resident at A home 1 presses a power source on/off button, that button is turned on, a CPU turns on the power sources of a television 2 and the information terminal equipment 3 and by controlling the decoding of character graphic information as the local information, character graphic images based on the local information are displayed on the screen of the television 2. Thus, the local information can be surely and speedily transmitted to all the local residents and that transmission can be executed at low cost.

2. 发明专利

JPH0886899A METHOD AND DEVICE FOR INJECTING ZINC AT NUCLEAR POWER PLANT 失效
公开(公告)号：JPH0886899A
公开(公告)日：1996-04-02
申请号：JP24493494
申请日：1994-09-14
申请人： EBARA CORP , TOSHIBA CORP , TOSHIBA ENGINEERING CO
发明人： MAEHARA KAZUMI , NEGISHI ITARU , DEGUCHI TATSUYA , INO TAKAO , SASAKI NORIYUKI , YOTSUYANAGI TADASHI , MOMOHARA HIROTAKA
IPC分类号： G21D1/00 , G21D3/08
摘要： PURPOSE: To provide a method and a device for injecting zinc which improve the solubility of zinc and make it possible to supply a zinc solution of high concentration at a low temperature and pressure. CONSTITUTION: In the method for injecting zinc to supply zinc into reactor water at a nuclear power plant, a zinc solution of high concentration obtained by dissolving zinc in an aqueous solution containing an electrolyte such as carbonic acid as a solvent is injected. Moreover, a zinc injecting device includes a zinc dissolving tank 17 equipped with a zinc supplying means 16 in the upper part and a carbon dioxide supplying means 26 in the lower part and an injecting means 25 to supply the zinc solution containing a zinc at a high concentration to reactor water.

3. 发明专利

JP2001021683A METHOD AND DEVICE OF METAL INJECTION 失效
公开(公告)号：JP2001021683A
公开(公告)日：2001-01-26
申请号：JP19235299
申请日：1999-07-06
申请人： TOSHIBA CORP , TOSHIBA ENGINEERING CO
发明人： URATA HIDEHIRO , TAKAGI JUNICHI , ICHIKAWA NAGAYOSHI , OSATO TETSUO , YAMAZAKI KENJI , MOMOHARA HIROTAKA , OTA MASAMIKI , ISHIDA RYOICHI
IPC分类号： G21D3/08 , C23F11/00 , C23F15/00 , G21D1/00
摘要： PROBLEM TO BE SOLVED: To make a necessary amount of metal adherable to a structure material surface in a reactor, while making metal not adhere to the cladding tube of the surface of nuclear fuel. SOLUTION: By injecting metal in the primary system of a reactor in a shutdown state, a stress corrosion to the reactor structure is suppressed. In this case, after opening a reactor pressure vessel lid 15, detaching a steam dryer 12 and steam/water separator 13 and taking out the nuclear fuel in that state, the reactor pressure vessel lid is closed to be sealed, reactor water is forcedly circulated and metal is injected into the reactor primary system from a metal injection part 16.

4. 发明专利

JPS6271591A CONDENSATE DESALTING DEVICE 失效
公开(公告)号：JPS6271591A
公开(公告)日：1987-04-02
申请号：JP21055385
申请日：1985-09-24
申请人： TOSHIBA CORP , TOSHIBA ENGINEERING CO
发明人： MOMOHARA HIROTAKA
IPC分类号： C02F1/42
摘要： PURPOSE:To reduce the amt. of the liquid chemical to be used in the stage of a regeneration operation by providing a lower condensate collecting outlet pipe and lower resin outlet pipe to the bottom of a condensate desalting column and providing an upper condensate collecting outlet pipe and upper resin outlet pipe to the side part of the condensate desalting column. CONSTITUTION:This condensate desalting device is to be installed to a condensate cleaning-up installation of a nuclear power plant and is disposed respectively with a condensate inlet pipe 21 to the top of the condensate desalting column 2 in which a granular ion exchange resin 1 is housed, the upper condensate collecting outlet pipe 51 and upper resin outlet pipe 52 in the side part and the lower condensate collecting outlet pipe 23 and lower resin outlet pipe 4 in the bottom. As a result, cleaning-up is executed by the ion exchange resin in the upper part of the column 2 and the cleaned-up water is taken out of the pipe 51 in the ordinary operation stage. Only the ion exchange resin in the upper part is required to be regenerated; therefore, the amt. of the liquid chemical to be used in the regeneration operation in the ordinary operation stage can be reduced. The amt. of the waste material to be generated is eventually decreased.

5. 发明专利

JPH08220293A OPERATION METHOD FOR NUCLEAR POWER PLANT 失效
公开(公告)号：JPH08220293A
公开(公告)日：1996-08-30
申请号：JP2191295
申请日：1995-02-09
申请人： TOSHIBA CORP , TOSHIBA ENGINEERING CO
发明人： YOTSUYANAGI TADASHI , SASAKI NORIYUKI , OTANI TAKU , MOMOHARA HIROTAKA
IPC分类号： G21D1/00 , G21D3/08
摘要： PURPOSE: To maintain a metallic oxidized film in a proper state and restrain the amount of a radioactive nuclide deposited on primary piping or equipment by injecting water solution containing at least one type of a metal or a metallic compound into the reactor of a nuclear power plant, and preliminarily operating the plant for forming a film out of the injected metal. CONSTITUTION: The pressure of condensate as a coolant is raised by a high- pressure condensate pump 7, a feedwater heater 8 and a feedwater pump 9 via a condensate pump 5 and a condensate purification system 6 and, then, the condensate is fed to a reactor vessel 10 through a feedwater pipe. On the other hand, a part or the whole of reactor water is forcibly re-circulated in a reactor re-circulation system 12 on the operation of a reactor re-circulation pump 11. In addition, a reactor coolant purification system 13 is branched from the system 12. In this case, the system 12 normally samples reactor water from the system 13 through a sampling line 14 connected thereto, and the concentration of dissolved oxygen, electrical conductivity or the like is measured in a reactor water analysis rack 15. A radioactivity measuring device 20 is connected to a control device 18 with a signal cable 21 via an output signal processing system 40. Chemical species are thus injected into the reactor.

6. 发明专利

JPH07323280A PURE WATER SUPPLY DEVICE 失效
公开(公告)号：JPH07323280A
公开(公告)日：1995-12-12
申请号：JP11850994
申请日：1994-05-31
申请人： TOSHIBA ENGINEERING CO , TOSHIBA CORP
发明人： MOMOHARA HIROTAKA , AOI HIROMI , SASAKI NORIYUKI
IPC分类号： G21C19/307 , B01D63/02 , C02F1/44 , C02F1/60
摘要： PURPOSE:To produce a high-purity stored water by reducing a silica concn. to a pure water storage tank. CONSTITUTION:A silica removing device 6 is connected at a down stream side of a pure water production device 2, and the pure water storage tank 3 is connected at the down stream side of the silica removing device 6. A hollow fiber membrane module is assembled into the silica removing device 6, and a cake layer of iron oxide having 0. 1-10mum thickness is pre--coated on the surface of the hollow fiber membrane. The silica in a liq. flowed from the pure water production device 2 is removed by the hollow fiber membrane and the cake layer, and the silica concn. of the stored water in the pure water storage tank 3 is reduced. As a result, the silica concn. in the water used at a nuclear power plant is reduced and a high-purity water of a reactor is obtained.

7. 发明专利

JP2001021682A METHOD AND DEVICE FOR WATER QUALITY CONTROL 失效
公开(公告)号：JP2001021682A
公开(公告)日：2001-01-26
申请号：JP19235199
申请日：1999-07-06
申请人： TOSHIBA CORP , TOSHIBA ENGINEERING CO
发明人： URATA HIDEHIRO , TAKAGI JUNICHI , ICHIKAWA NAGAYOSHI , OSATO TETSUO , MOMOHARA HIROTAKA , OTA MASAMIKI , ISHIDA RYOICHI
IPC分类号： C02F1/42 , C02F1/66 , C23F15/00 , G21C19/307 , G21D1/00 , G21D3/08
摘要： PROBLEM TO BE SOLVED: To provide a method and device for water quality control not giving adverse effects to the structure materials in a reactor by restricting pH within a specified range during injection of metal into a reactor. SOLUTION: In a process injecting metal or metal compound into the primary system of a reactor for suppressing corrosion of structure, pH at room temperature is continuously measured by cooling and measuring the water quality of the primary system at a reactor water sampling system in the process. If the pH is 5.6 or lower, an alkali solution is injected and if pH is 8.6 or higher, an acid solution is injected from an injection device 12 for pH control set in the primary system of the reactor so that the pH of the primary system water is controlled 5.6 to 8.6.

8. 发明专利

JPH07280989A SPECIES INJECTION SYSTEM FOR NUCLEAR PLANT 失效
公开(公告)号：JPH07280989A
公开(公告)日：1995-10-27
申请号：JP6721294
申请日：1994-04-05
申请人： TOSHIBA CORP , TOSHIBA ENGINEERING CO
发明人： YOTSUYANAGI TADASHI , MOMOHARA HIROTAKA , SASAKI NORIYUKI
IPC分类号： G01N1/10 , G21C17/02 , G21D1/00 , G21D3/08
摘要： PURPOSE:To inject chemical species with good controllability. conduct the injection of two kinds or more of the species by only one electrolysis device and relax a constraint condition from installation space. CONSTITUTION:An injection water analysis device 23 and a sample preparation device 17 are connected to a condensate purification system 6 through an injection piping 28. An electrolysis device 16 is connected to the sample preparation device 17. The electrolysis device 16 and the sample preparation device 17 are connected to a controller 18 through a signal cable 25. A reactor water analysis rack 15 is connected to a reactor recirculation system 12 and a reactor coolant purification system 13 through a sampling line 14. The reactor water analysis rack 15 is connected to an output signal processing system 32, and the output of the output signal processing system 32 is input to the controller 18. A radioactive concentration measuring device 24 is provided in the reactor recirculation system 12 and connected to the output signal processing system 32.

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