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1. 发明专利

DE3832910A1 未知
公开(公告)号：DE3832910A1
公开(公告)日：1989-04-13
申请号：DE3832910
申请日：1988-09-28
申请人： HITACHI LTD
发明人： IRUBE MAKOTO , NAKAJIMA JUNJIRO , UMEHARA HAJIME , TADA NOBUO , AJIMA MASAYOSHI
IPC分类号： G21C3/34 , G21C3/344

2. 发明专利

JPH0921897A REPLACING METHOD FOR AIR CONDITIONER MONITOR HOUSING 失效
公开(公告)号：JPH0921897A
公开(公告)日：1997-01-21
申请号：JP17098095
申请日：1995-07-06
申请人： HITACHI LTD
发明人： ONO SHIGEKI , KUROSAWA KOICHI , TAKADA HIROSHI , TADA NOBUO , FURUKAWA HIDEYASU , ENOMOTO KUNIO
IPC分类号： G21C17/10
摘要： PROBLEM TO BE SOLVED: To prevent slip-off of an ICM guide pipe and increase connecting strength by setting a specific process such as a pipe joining process by mechanical enlargement of the pipe. SOLUTION: An ICM guide pipe 2 is cut in position A and an ICM housing 1 in position B to remove the guide pipe 2 bellow position A and the ICM 1. A new cladding welding part 7 is formed on the inside of an opening part 5a of a lower mirror 5, a new ICM housing 9 having a pipe 8 of inner and outer diameters equal to the pipe 2 at the upper end is inserted from the lower part of the lower mirror 5, and fixed to the welding part 7. A pipe joint 11 fitting to a new guide pipe 10 is fixed to the housing 9. The pipe 10 is set between the cut part of the pipe 2 and the housing 9. A joint 14 is set in the pipe 10 and the joint part of the pipe 2, and the pipe 10, the pipe 2, and the housing 9 are enlarged, and the pipe 2 and the pipe 10, and the pipe 10 and the housing 9 are connected. Finally, the ICM is inserted into the pipe 2, the pipe 10, and the housing 9 to complete assembly. Slip-off of the ICM guide pipe is prevented, and connection strength in the piping joint part is increased.

3. 发明专利

JPS6484188A CLOSED CELL TYPE FUEL SPACER AND PRODUCTION THEREOF 失效
公开(公告)号：JPS6484188A
公开(公告)日：1989-03-29
申请号：JP24328787
申请日：1987-09-28
申请人： HITACHI LTD
发明人： IRIBE MAKOTO , NAKAJIMA JUNJIRO , UMEHARA HAJIME , TADA NOBUO , YASUJIMA MASAKICHI
IPC分类号： G21C3/34 , G21C3/344
摘要： PURPOSE:To prevent the erroneous assembly of a closed cell type fuel spacer by providing a notch for positioning or projection to the end edge part of a cylindrical member which constitutes the spacer. CONSTITUTION:The notch 10 is provided to the end edge part of the cylindrical member 3 which constitutes the closed cell type fuel spacer. This notch 10 is positioned in the direction where the notch faces either of the projections 5. The shape of the notch 10 is preferably slightly larger in the depth than the radius. The floating of the member 3 from a jig is prevented by provision of the depth slightly larger than the radius of the semi-circle of the projection on the jig side to the notch 10 in the case of providing the radial projection to the jig side. Stable setting without generating undue stress in the positioning is possible in such a case. The similar effect is obtd. by forming a recess for positioning in place of the projection for positioning in the case of producing the projection in place of the notch 10 of the member 3.

4. 发明专利

JPS636495A FUEL SPACER AND FUEL AGGREGATE 失效
公开(公告)号：JPS636495A
公开(公告)日：1988-01-12
申请号：JP14954786
申请日：1986-06-27
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： NAKAJIMA JUNJIRO , TADA NOBUO , KAWADA YOSHINARI , YASUJIMA MASAKICHI , YANAGI YOSHIHIKO , INAGAKI MASATOSHI , ASANO RINICHI , MATSUURA TETSUAKI , SAITO SOZO , HIRAKAWA HIROMASA
IPC分类号： G21C3/34

5. 发明专利

JPS60257391A CONTROL ROD FOR NUCLEAR REACTOR HAVING CORROSION RESISTANCE AND MANUFACTURE THEREOF 失效
公开(公告)号：JPS60257391A
公开(公告)日：1985-12-19
申请号：JP11430284
申请日：1984-06-04
申请人： HITACHI LTD
发明人： YOSHIDA SUMI , TAKASE IWAO , IKEDA SHINZOU , TADA NOBUO
IPC分类号： C22C27/00 , C22F1/18 , G21C7/10 , G21C7/24

6. 发明专利

JPS6085390A REACTOR CONTROL ROD 失效
公开(公告)号：JPS6085390A
公开(公告)日：1985-05-14
申请号：JP19232183
申请日：1983-10-17
申请人： HITACHI LTD
发明人： OOWADA MASATAKA , TADA NOBUO , MARU AKIRA
IPC分类号： G21C7/24 , G21C7/10

7. 发明专利

JPS6060585A CONTROL ROD FOR NUCLEAR REACTOR 失效
公开(公告)号：JPS6060585A
公开(公告)日：1985-04-08
申请号：JP16878783
申请日：1983-09-13
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： MARU AKIRA , OOWADA MASATAKA , TADA NOBUO , KURIHARA KUNITOSHI
IPC分类号： G21C7/113 , G21C7/10

8. 发明专利

JP2003337192A Inspection and preventive maintenance apparatus for structure within reactor pressure vessel, and inspection method 审中-公开
标题翻译：反应堆压力容器结构的检查和预防性维护装置及检验方法
公开(公告)号：JP2003337192A
公开(公告)日：2003-11-28
申请号：JP2002146377
申请日：2002-05-21
申请人： Hitachi Ltd , Sugino Mach Ltd , 株式会社スギノマシン , 株式会社日立製作所
发明人： KUROSAWA KOICHI , HIRANO KATSUHIKO , MORINAKA TADASHI , TADA NOBUO , SAKAI HIDEAKI
IPC分类号： G21C17/08 , G21C17/003 , G21C17/02 , G21C19/02
摘要： PROBLEM TO BE SOLVED: To enhance efficiency of inspection and preventive maintenance work of a reactor bottom part of a reactor pressure vessel and an annulus section formed between a reactor core shroud and the reactor pressure vessel.
SOLUTION: An inspection and preventive maintenance apparatus for a structure within the reactor pressure vessel for executing inspection, cleaning and preventive maintenance of the structure by obtaining access to the structure within the reactor pressure vessel filled with cooling water through a remote control comprises a fixing mechanism for fixing the apparatus itself to the structure within the reactor pressure vessel or a pipe guiding itself and a main body section movably and removably attached to the fixing mechanism and provided with a plurality of joints. The main body section is provided with a nozzle 436 for producing cavitation bubbles and an electronic camera for monitoring a work execution part and an illumination means 437.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了提高反应堆压力容器的反应器底部部分和在反应堆堆芯护罩和反应堆压力容器之间形成的环形部分的检查和预防性维护工作的效率。解决方案：一种反应堆压力容器内的结构的检查和预防性维护装置，用于通过遥控器进入装有冷却水的反应堆压力容器内的结构进行结构的检查，清洁和预防性维护，包括：用于将设备本身固定到反应堆压力容器内的结构或引导自身的管道以及可移动地和可移除地附接到固定机构并设置有多个接头的主体部分。主体部分设置有用于产生气泡的喷嘴436和用于监视工作执行部分的电子照相机和照明装置437.版权所有（C）2004，JPO

9. 发明专利

JP2001242279A METHOD FOR MONITORING ATTACHMENT ON INTERNAL WALL OF PIPE IN REACTOR PRESSURE VESSEL AND SAMPLING DEVICE FOR ATTACHMENT ON INTERNAL WALL 失效
公开(公告)号：JP2001242279A
公开(公告)日：2001-09-07
申请号：JP2000050890
申请日：2000-02-28
申请人： HITACHI LTD
发明人： ONO SHIGEKI , TADA NOBUO , MAEDA MINORU
IPC分类号： G01N1/04 , G21C17/00 , G21C17/003 , G21C17/01 , G21F9/00 , G21F9/28
摘要： PROBLEM TO BE SOLVED: To provide a device and a method for collecting the specified quantity of attachment from the pipe installed in the water in a reactor pressure vessel, prohibiting collection of internal wall attachment from a branch pipe. SOLUTION: An inlet mixer 3 is placed on a bearer 11 of a pipe internal wall attachment collecting device 10 provided at a reactor well 8, and a pump 16 is driven to suck water in the inlet mixer 3 through a filter 15. At this time, a motor 14 is driven to rotate a brush 13. The internal wall attachment is thereby separated and recovered by a filter 15. If necessary, after completing collection, calipers or the like are used to confirm the surface area of a part from which the attachment is separated. After collecting work is completed, the inlet mixer 3 is restored. The specified quantity of attachment can be collected even frame pipe installed in the reactor pressure vessel, prohibiting collection of the internal wall attachment from a branch pipe and re-injection timing of zirconium or the like can be evaluated.

10. 发明专利

JPH10288696A DECONTAMINATION METHOD 失效
公开(公告)号：JPH10288696A
公开(公告)日：1998-10-27
申请号：JP9556897
申请日：1997-04-14
申请人： HITACHI LTD , HITACHI KYOWA ENG KK
发明人： TSUJIMURA HIROSHI , ONO SHIGEKI , ONUKI TOYOMITSU , TADA NOBUO , TAMAI YASUKATA , TOYODA SEIICHI , OKADA MASAYA , KURIHARA MASAYUKI
IPC分类号： G21F9/00
摘要： PROBLEM TO BE SOLVED: To enable decontamination with suppressed exposure even in the case receiving high radiation rate from decontaminating objects and the surrounding components and the like by covering the decontaminating surface with a strippable paint and sheet in combination and removing them after the decontamination. SOLUTION: A sheet 2 is pasted in contact onto the wetted part of a decontaminating object 1, strippable paint 3 is spread around it. The sheet 2 used is solvent-resistive not to be degraded by the solvent contained in the strippable paint 3, tough for expansion and tearing and water resistive. By sealing the wettable surface of the decontaminating object 1 with a sheet 2 and the strippable paint 3, the decontaminating object never directly contaminated even if it is carried in reactor water. After completing the work in reactor water, the strippable paint 3 and the sheet 2 is removed. The sheet itself used has no adhesiveness to the decontaminating object 1, is never torn with small force and can be removed at once.

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