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1. 发明专利

JPS62251700A VESSEL FOR PROCESSING AND TREATING RADIOACTIVE WASTE 失效
公开(公告)号：JPS62251700A
公开(公告)日：1987-11-02
申请号：JP9519486
申请日：1986-04-24
申请人： TOSHIBA CORP , NIPPON ATOMIC IND GROUP CO
发明人： WADA JIRO , KATO HIROAKI
IPC分类号： G21F9/36 , B65D25/00 , G21F5/002 , G21F5/005 , G21F9/00

2. 发明专利

JPS61294396A TREATER FOR CONTROL ROD 失效
公开(公告)号：JPS61294396A
公开(公告)日：1986-12-25
申请号：JP13733085
申请日：1985-06-24
申请人： TOSHIBA CORP , NIPPON ATOMIC IND GROUP CO
发明人： KATO HIROAKI
IPC分类号： G21C19/02 , G21C19/19 , G21C19/32

3. 发明专利

JPH01176996A DEVICE FOR CUTTING AND DISASSEMBLING FUEL ASSEMBLY OR THE LIKE 失效
公开(公告)号：JPH01176996A
公开(公告)日：1989-07-13
申请号：JP4288
申请日：1988-01-04
申请人： TOSHIBA CORP , NIPPON ATOMIC IND GROUP CO
发明人： FURUMURA SHIRO , HIOKI HIDEAKI , KATO HIROAKI
IPC分类号： G21C19/37 , G21C19/36
摘要： PURPOSE:To improve efficiency by providing a gripping mechanism to grip a material to be cut in different two positions and a cutting mechanism to cut said material between the two pinching positions to supporting arms thereby inserting and removing the cutting mechanism between the pinching positions. CONSTITUTION:The gripping mechanism 32 for gripping a fuel assembly 31 and the cutting mechanism 33 for cutting the assembly 31 are provided to the free ends of the supporting arms 34, 35 of the title device 30. The mechanism 33 is constituted by housing a disk-shaped grinding wheel cutter 49 freely rotatably in a cutter bar 48 fixed to the free end of the arm 35. The device 30 is moved between a disassembly working tower 37 and a disassembled waste housing container 38 by a rotational moving mechanism provided to the base part of the arms 34, 35 and the cutter 49 is pressed to the assembly 31 gripped by the gripers 43 of the mechanism 32 while said cutter is kept rotated between the upper and lower gripping positions, by which the assembly is cut. The cutting is, therefore, efficiently executed.

4. 发明专利

JPS63308590A CONTAMINATION MODE DISCRIMINATING INSTRUMENT 失效
公开(公告)号：JPS63308590A
公开(公告)日：1988-12-15
申请号：JP14479187
申请日：1987-06-10
申请人： NIPPON ATOMIC IND GROUP CO , TOSHIBA CORP
发明人： SAKURAI JIRO , YODA MASAKI , GOTO TETSUO , KATO HIROAKI
IPC分类号： G01T1/167 , G01T1/169
摘要： PURPOSE:To enable whether the contamination mode of a radioactive waste is of a surface contaminant or of a radioactive matter to be accurately discriminated by comparing a difference between the ratios of measured beta ray values to measured gamma ray values obtained by measuring objects to be measured by radiation measuring means with a reference value. CONSTITUTION:beta rays and gamma rays radiated from an object to be measured 1 being conveyed by a conveyor line 7 are measured by beta ray detectors 4a-4d and gamma ray detectors 5a-5b on radiation detecting means 2a-2d, respectively. Then, measured results are fed to arithmetic means 3 and the ratios of measured betaby values to measured gamma ray values for every measuring means 2a-2d are calculated. A difference between the ratios obtained by two pairs of the means (2a and 2b) and (2c and 2d) respectively opposing to each other is calculated and compared with a reference value. The object to be measured can be accurately judged to be a surface contamination when the absolute value of the difference is larger than the reference value while it is judged as a radioactive matter when the value is not larger than the reference value.

5. 发明专利

JPS6370186A RADIOACTIVE WASTE SELECTOR 失效
公开(公告)号：JPS6370186A
公开(公告)日：1988-03-30
申请号：JP21486086
申请日：1986-09-11
申请人： NIPPON ATOMIC IND GROUP CO , TOSHIBA CORP
发明人： TAKAHASHI MASATO , KATO HIROAKI
IPC分类号： G01T1/167 , G01T1/169 , G01T1/36
摘要： PURPOSE:To identify radioactive waste as surface contaminated matter or radioactive matter, by comparing with a reference value the ratio of spectrums between beta rays and gamma rays released simultaneously therefrom. CONSTITUTION:beta rays and gamma rays released simultaneously from a radioactive waste 6 are detected with a radiation detector 2 and spectrums thereof are measured with a spectrometer 3. A discriminator 4 compares the ratio of the spectrums between beta rays and gamma rays with a reference value to screen the radioactive waste. It is noted that the transmission power of the beta rays is smaller than that of gamma rays and the beta rays released from a radioactive matter lose more of energy while passing through the radioactive matter itself as compared with the beta rays released from a surface contaminated matter. This inevitably develops a difference between the spectral ratio between the beta rays and gamma rays released simultaneously from the radioactive waste thereby enabling the distinguishing of the waste between both the categories by comparing the spectral ratio with the reference value.

6. 发明专利

JPS5111624A 失效
公开(公告)号：JPS5111624A
公开(公告)日：1976-01-29
申请号：JP8224774
申请日：1974-07-19
申请人： TOKYO SHIBAURA ELECTRIC CO , NIPPON ATOMIC IND GROUP CO
发明人： KATO HIROAKI
IPC分类号： F17C3/00 , B32B13/06 , E04B2/86 , E04C2/28 , E04G11/08 , E04H7/18

7. 发明专利

JPH0644066B2 失效
公开(公告)号：JPH0644066B2
公开(公告)日：1994-06-08
申请号：JP13733085
申请日：1985-06-24
申请人： TOKYO SHIBAURA ELECTRIC CO , NIPPON ATOMIC IND GROUP CO
发明人： KATO HIROAKI
IPC分类号： G21C19/02 , G21C19/19 , G21C19/32

8. 发明专利

JP2001066100A METHOD AND DEVICE FOR ELIMINATING CHEMICAL 失效
公开(公告)号：JP2001066100A
公开(公告)日：2001-03-16
申请号：JP24445899
申请日：1999-08-31
申请人： TOSHIBA CORP , TOSHIBA PLANT KENSETSU CO LTD
发明人： KATO HIROAKI , NAGAYAMA KENICHI , YOSHIOKA RITSUO , SHOJI YUICHI , UTSUNOMIYA KAZUHIRO
IPC分类号： F42B33/06
摘要： PROBLEM TO BE SOLVED: To perform detoxification treatment by extracting a chemical such as a VX gas being accommodated in a shell. SOLUTION: The method for eliminating a chemical consists of a pre- treatment process, a dismantling process, a main treatment process, and a post- treatment process. The pre-treatment and dismantling processes sample a chemical, an outer shell, and powder from the acceptance verification process of a shell. The main treatment process including a chemical-sampling process makes detoxification chemicals, and performing the washing and explosion treatment of the outer shell, powder, and the like. The post-treatment process performs the post-treatment of residue after treating the chemical, and at the same time performs the post-treatment of waste such as washing water for washing the outer shell or the like, and a filter and performs the post treatment of the residue or the like.

9. 发明专利

JPH0829597A CONTAINING METHOD OF RADIOACTIVE CONTAMINANT AND CONTAINER THEREFOR 失效
公开(公告)号：JPH0829597A
公开(公告)日：1996-02-02
申请号：JP16434194
申请日：1994-07-15
申请人： ISHIKAWAJIMA HARIMA HEAVY IND , TOSHIBA CORP
发明人： SAKATANI TADATSUGU , MIO KEIGO , KATO HIROAKI , HANADA YOSHIINE
IPC分类号： G21F1/08 , G21F5/002 , G21F5/005 , G21F9/30
摘要： PURPOSE:To enhance the cooling efficiency, the radioactivity shielding performance, and the impact resistance by containing a plurality of radioactive contaminants within a container while sectioning and integrating the container and the radioactive contaminants by filling a molten metal between them and solidifying. CONSTITUTION:Rectangular tubular frames 2 are supported by coupling frames 2a in a stainless steel container body 1A and the space part 3a between the container body 1A and the frame 2 is filled with molten metal, e.g. aluminum, having high thermal conductivity which is then cooled and solidified thus integrating the body 1A and the frame 2 through a cast metal layer M. A radioactive contaminant X, e.g. a spent fuel assembly, is then loaded into each frame 2 and an upper case 1B is applied to the body 1A and seal welded thereto. Subsequently, the space in the case 1B is filled with He gas thus forming a container P for radioactive contaminant. Since the decay-heat of the contaminant X is transmitted through the cast metal layer M to the container 1, heat radiation performance is enhanced. Radioactivity shielding performance is also enhanced because the metal layer M shields radioactivity.

10. 发明专利

JPH04359196A RADIOACTIVE WASTE DISPOSING METHOD 失效
公开(公告)号：JPH04359196A
公开(公告)日：1992-12-11
申请号：JP13394191
申请日：1991-06-05
申请人： CHICHIBU CEMENT KK , TOSHIBA CORP , HITACHI LTD
发明人： ISHIZAKI KANJIRO , KOYANAGI NAOAKI , KATO HIROAKI , OURA MASATO
IPC分类号： G21F9/36 , G21F9/30
摘要： PURPOSE:To effectively utilize radioactive wastes by filling the fine powder generated when the concrete of a nuclear power-related facility is crushed into a radioactive waste disposing container inserted with miscellaneous solids. CONSTITUTION:Reclaimed coarse aggregates, reclaimed fine aggregates and fine sand obtained from the wastes generated when the concrete of a nuclear power-related facility is demolished are utilized for the construction material of the nuclear power-related facility, however fine powder is hard to utilize. The fine powder is utilized as a filling material when radioactive wastes are disposed. A kneaded material of the fine powder generated when the concrete of building demolition is crushed and Solfix 12(R) is filled into a radioactive waste disposing container inserted with miscellaneous solids simulating actual wastes. The miscellaneous solids are solidified in the radioactive waste disposing container, and higher safety is expected. The fine powder itself may be polluted by the radioactive material, however it is carried into a radioactive waste disposal site later on, and there is no problem.

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