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1. 发明专利

JPS63204193A FUEL AGGREGATE FOR NUCLEAR REACTOR 失效
公开(公告)号：JPS63204193A
公开(公告)日：1988-08-23
申请号：JP3441787
申请日：1987-02-19
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP , NIPPON ATOMIC IND GROUP CO
发明人： MIYAMARU KUNIO , AKIYAMA HIDETOSHI , HIDA KAZUTAKA
IPC分类号： G21C3/328 , G21C3/30 , G21C17/06

2. 发明专利

JPH024405A SOLVENT EXTRACTOR 失效
公开(公告)号：JPH024405A
公开(公告)日：1990-01-09
申请号：JP15565388
申请日：1988-06-23
申请人： NIPPON ATOMIC IND GROUP CO , TOSHIBA CORP
发明人： TAKAHASHI MASATO , AKIYAMA HIDETOSHI
IPC分类号： G01N31/00 , B01D11/04
摘要： PURPOSE:To simplify the structure of the title apparatus and to achieve the miniaturization thereof by forming partition plates each having a liquid passage at a position offset from the center thereof and engaging upper and lower liquid sump parts in a freely rotatable manner by moving slidably the partition plates. CONSTITUTION:When the area of the overlap part of two partition plates 4, 5 is made max. by rotating lower and upper liquid sump parts 1, 2, the max. liquid passage is formed at the communication part of both liquid sump parts 1, 2 to allow both parts to communicate with each other. When the area of the overlap part of two partition plates 4, 5 is made min. by rotating the lower and upper liquid sump parts 1, 2, the liquid passage of the communication part is closed by the partition plates 4, 5 and the liquids of both sump parts 1, 2 are separated. As mentioned, since a structure used in place of the drain cock of a conventional solvent extractor is formed by the combination of two partition plates 4, 5, the extractive separation between liquid phases can be performed by simple operation and miniaturization is also easy because of a simple structure and the extractive separation of a small amount of a liquid specimen can be performed.

3. 发明专利

JPH0198987A CONTAMINATION PREVENTING DEVICE FOR ALPHA RAY DETECTOR 失效
公开(公告)号：JPH0198987A
公开(公告)日：1989-04-17
申请号：JP25475187
申请日：1987-10-12
申请人： NIPPON ATOMIC IND GROUP CO , TOSHIBA CORP
发明人： TAKAHASHI MASATO , AKIYAMA HIDETOSHI
IPC分类号： G01T7/00
摘要： PURPOSE:To simply and inexpensively prevent the contamination of an alpha ray detector caused by a recoil of an alpha disintegration daughter nuclide by capturing a recoil nucleus which is emitted when a radioactive nuclide radiates alpha rays. CONSTITUTION:First of all, a contamination preventing device 5 is installed in an alpha ray detector 1, and the front of a detecting part of the alpha ray detector 1 is covered with a recoil nucleus capturing filter 6. Thereafter, when the detection of alpha rays is executed, thorium 228, etc., contained in an alpha ray source 3 are brought to alpha breakdown and the emitted alpha rays transmit through the recoil nucleus capturing filter 6 and detected by the alpha ray detector 1. Also, at the time of alpha disintegration, a recoil nucleus such as radium 224, etc., emitted from the alpha ray source 3 is captured by the recoil nucleus capturing filter 6. Subsequently, after the detection of alpha rays is ended, the contamination preventing device 5 is removed from the alpha ray detector 1 and rejected. The alpha ray detector 1 from which the contamination preventing device 5 is removed can be used repeatedly by installing a new contamination preventing device 5 again. In such a way, the contamination of the alpha ray detector caused by the recoil of an alpha disintegration daughter nuclide can be prevented simply and inexpensively.

4. 发明专利

JPH01184489A RADIATION MEASURING INSTRUMENT 失效
公开(公告)号：JPH01184489A
公开(公告)日：1989-07-24
申请号：JP743688
申请日：1988-01-19
申请人： NIPPON ATOMIC IND GROUP CO , TOSHIBA CORP
发明人： TAKAHASHI MASATO , AKIYAMA HIDETOSHI
IPC分类号： G01T7/00
摘要： PURPOSE:To produce a vacuum in a detector chamber even at the time of sample replacement by shielding airtightly and opening the detector chamber and a sample loading chamber which are linked with each other to convey a sample by using a vacuum isolation plate. CONSTITUTION:The vacuum isolation plate 19 is provided in a free insertion and extraction state to the communication part between the detector chamber 8 and sample loading chamber 9. This vacuum isolation plate 19 is formed of a light shielding material and opens and closes the communication part to isolate the detector chamber 8 airtightly when inserted. When a sample 6 is taken out of a measuring instrument main body 16 together with a sample loading base 17 and replaced with another sample, the detector chamber 8 is isolated airtightly by the vacuum isolation plate 19 and held in the vacuum state. Consequently, a radiation detector 2 never varies in detection characteristic value owing to the entry of external light or air.

5. 发明专利

JPS63127191A FUEL ROD SPACER 失效
公开(公告)号：JPS63127191A
公开(公告)日：1988-05-31
申请号：JP27176486
申请日：1986-11-17
申请人： TOSHIBA CORP
发明人： AKIYAMA HIDETOSHI
IPC分类号： G21C3/344 , G21C3/34

6. 发明专利

JPS6151592A Water rod 失效
标题翻译：水杆
公开(公告)号：JPS6151592A
公开(公告)日：1986-03-14
申请号：JP17336784
申请日：1984-08-22
申请人： Toshiba Corp
发明人： AKIYAMA HIDETOSHI
IPC分类号： G21C3/326 , G21C3/30
CPC分类号： Y02E30/31 , Y02E30/38

7. 发明专利

JPH09218910A METHOD AND DEVICE FOR READING MARKING 失效
公开(公告)号：JPH09218910A
公开(公告)日：1997-08-19
申请号：JP2281496
申请日：1996-02-08
申请人： TOSHIBA CORP , TOUKEN KK
发明人： OKAZAKI YUKIMOTO , AKIYAMA HIDETOSHI , AOKI NOBUTADA , SANO YUJI , YAMADA AKITAKA , HAGIWARA TOSHIO , KODAIRA OSAMU
IPC分类号： G06K19/06 , G06K7/00 , G06K7/10
摘要： PROBLEM TO BE SOLVED: To remotely and easily identify the component or the like of an object member with high accuracy without directly touching it with hands or approaching it by identifying the object member by irradiating that object member with light and detecting reflected light. SOLUTION: Radiation light is outputted from two light emitting diode flood instruments 4a and 4b and a marking area 3 on the surface of an object member 2 is irradiated with that light. The reflected light reflected by the marking area 3 is converged by a lens 5a and narrowed by a diaphragm member 5b and afterwards, the image of marking 3 is formed on a photoelectric transducing plane 6a of a CCD image sensor 6. The sampling of reflected light due to an optical system 5 for sampling is performed out of the direction of regular reflection (mirror reflection direction). Then, difference is generated between the quantity of detected light diffused and reflected from the smooth area of marking area 3 and the quantity of detected light diffused and reflected from the rough area. A data processor 7 can discriminate this difference and remotely read the marking 3 corresponding to the difference in roughness on the surface.

8. 发明专利

JPS6242092A FUEL ROD SPACER 失效
公开(公告)号：JPS6242092A
公开(公告)日：1987-02-24
申请号：JP18042285
申请日：1985-08-19
申请人： TOSHIBA CORP
发明人： AKIYAMA HIDETOSHI , IKEDA TADAHIRO
IPC分类号： G21C3/344 , G21C3/34

9. 发明专利

JPH09159790A FUEL ROD 失效
公开(公告)号：JPH09159790A
公开(公告)日：1997-06-20
申请号：JP31769995
申请日：1995-12-06
申请人： TOSHIBA CORP
发明人： AKIYAMA HIDETOSHI
IPC分类号： G21C3/10 , B23K9/00 , B23K33/00 , G21C17/06 , G21C21/02
摘要： PROBLEM TO BE SOLVED: To facilitate integrity confirmation during non-destructive inspection by providing a neck part with a diameter smaller than a bevel part outer diameter in between an end plug body and the bevel part. SOLUTION: The outer diameter of bevel part 23 formed in one with an end plug body 22 of a sealing plug 21 inserted and welded in the open end of a clad 9 is set nearly equal to the inner diameter of the clad 9 to facilitate the insertion. And between the end plug body 22 and a bevel part 23, a neck part 24 with a diameter smaller than the outer diameter of the bevel part 23 is provided to facilitate the confirmation of the welding during non-destructive inspection. Also, a groove 25 is provided around the bevel part 23 to improve welding capability. By this, when a fuel rod 20 constituting fuel assembly loaded in a reactor is fabricated and the clad 9 and the seal end plug 21 are welded for sealing, the positioning of the bevel part 23 of the seal end plug 21 inserting into the clad 9 is easily performed and thus, the welding of the clad 9 and the seal end plug 21 can be surely made.

10. 发明专利

JPH05346472A 失效
公开(公告)号：JPH05346472A
公开(公告)日：1993-12-27
申请号：JP15517692
申请日：1992-06-15
申请人： TOSHIBA CORP
发明人： AKIYAMA HIDETOSHI
IPC分类号： G21C3/17 , G21C3/16 , G21C3/62
摘要： PURPOSE:To keep the internal pressure of an MOX fuel rod appropriately since the internal pressure thereof becomes excessive at the end of irradiation in the MOX fuel rod in which an FP gas discharge rate is comparatively high. CONSTITUTION:In connection with an MOX fuel rod 3a whose cladding tube 9 is charged with a plurality of MOX sintered pellets 10a and sealed with upper and lower end plugs 11, 12, a volume rate of a plenum part 14a to a fuel part 13a is selected from 0.11 to 0.15 or a length ratio thereof is selected from 0.12 to 0.16. Thereby the internal pressure of the MOX fuel rod can be properly held even at the end of irradiation.

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