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1. 发明专利

JP2001133589A CASK 失效
公开(公告)号：JP2001133589A
公开(公告)日：2001-05-18
申请号：JP31171499
申请日：1999-11-01
申请人： MITSUBISHI HEAVY IND LTD
发明人： HODE HIDE , OSONO MASANARI , OKAME SHINJI
IPC分类号： G21C19/06 , G21F5/008 , G21F9/36
摘要： PROBLEM TO BE SOLVED: To improve space efficiency and buffer performance in transportation of a cask by enlarging a crush margin of a butter member. SOLUTION: This cask is provided with a trunnion 10 having a receiving part 11 fitted to the cask main body and a suspending part 12 removably fitted to the receiving part 11. According to the invention, the suspending part 12 can be detached from the receiving part 11, in transportation etc., so that a crush margin can be increased for that. Accordingly, the butter member can be reduced in diameter so as to improve the space efficiency in transportation. The crush margin can be enlarged as compared with the conventional case, so that shock can be gently absorbed so as to improve buffer performance.

2. 发明专利

JP2001133588A ABSORBING ROD, ITS INSERTING DEVICE, CASK, AND TRANSPORT AND STORING METHOD FOR SPENT NUCLEAR FUEL ASSEMBLY 失效
公开(公告)号：JP2001133588A
公开(公告)日：2001-05-18
申请号：JP31171399
申请日：1999-11-01
申请人： MITSUBISHI HEAVY IND LTD
发明人： HODE HIDE , OSONO MASANARI , SAKASHITA KIICHIRO , ITO TOMOHIRO
IPC分类号： G21F5/06 , G21C19/06 , G21C19/40 , G21F5/008 , G21F5/012
摘要： PROBLEM TO BE SOLVED: To heighten the storing density of a spent nuclear fuel assembly by effectively using a control rod insert space and a measurement rod insert space existing in a spent nuclear fuel assembly for PWR to shorten the distance for securing subcriticality between the spent nuclear fuel assemblies. SOLUTION: In a reactor, an absorbing rod 11 having the substantially same shape as a column-like control rod used in controlling the reactivity of a reactor core and a neutron shield capability is inserted in a control rod guide pipe and a measuring pipe of the nuclear fuel assembly 1.

3. 发明专利

JP2001083283A INSERTION METHOD FOR BASKET 失效
公开(公告)号：JP2001083283A
公开(公告)日：2001-03-30
申请号：JP25801499
申请日：1999-09-10
申请人： MITSUBISHI HEAVY IND LTD
发明人： HODE HIDE , MATSUOKA HISAHIRO , TAMAOKI HIRONORI
IPC分类号： G21C19/32 , G21C19/06 , G21F5/012 , G21F9/36
摘要： PROBLEM TO BE SOLVED: To insert all square pipes into a cavity easily and surely without the concentration of a stress by a method wherein the volume of a basket ontained by combining the respective pipes in the prescribed number is computed and a combination of the square pipes which can be housed in the cavity and whose volume becomes minimum is decided. SOLUTION: A square pipe 132 which is suspended by a holding part 300 is turned by the rotating drive of a motor 301 by using a vertical life as an axis. A measuring part 201 which has a linear-array optical transmission- reception part 202 measures a distance up to the square pipe 132 which is being turned, and it measures the shape of the square pipe 132. then, a measurement control part 206 controls the rotation of the motor 301 and the measurement of the optical transmissionreception part 202, and measured data 208 as a measured result is stored in storage part 205. On the basis of the measured data 208, a computing part 207 computes a basket shape obtained by combining respective square pipes 132, it decides a combination of the respective pipes 132 which can be inserted into a cavity and whose volume becomes minimum. A control part 204 outputs result data 209 to an output part 203, and the square pipes 132 are inserted into the cavity on the basis of an optimum combination.

4. 发明专利

JP2002277585A METALLIC SEALED VESSEL AND DRYING METHOD FOR METALLIC SEALED VESSEL 失效
公开(公告)号：JP2002277585A
公开(公告)日：2002-09-25
申请号：JP2001072792
申请日：2001-03-14
申请人： MITSUBISHI HEAVY IND LTD
发明人： MINAMI MASAHARU , ASADA KAZUO , KAWAKAMI TETSUJI , OSONO MASANARI , HODE HIDE , OSAKI MASARU , IRINO MITSUHIRO
IPC分类号： G21C19/32 , G21C19/06 , G21F5/008 , G21F5/12 , G21F9/36
摘要： PROBLEM TO BE SOLVED: To provide a metallic sealed vessel capable of easily draining the water left in the inner part and a drying method for metallic sealed vessel allowing a person to confirm that the water left in the metallic sealed vessel is reduced to an allowable residual water content. SOLUTION: In a cask (metallic sealed vessel) 1 having an opening end 2a sealed by a primary lid 3 and a secondary lid 4, this cask comprises a first communicating passage 14 allowing a first groove 10 provided on the primary lid 3 to communicate with the inside of a vessel body 2 and a second communicating passage 14 communicating with the outside of the primary lid 3. A primary lid fastening bolt 9 comprises a through-hole 9a extending in the axial direction. When the first vacuum drying of sealing the primary lid 3 to dry the inner part of the vessel body 2 and the second vacuum drying of sealing the secondary lid 4 to dry the space between the primary lid 3 and the secondary lid 4 are executed, the pressure change is measured to confirm that the water in the inner part is reduced to the allowable residual water content or less.

5. 发明专利

JP2001318187A CASK 失效
公开(公告)号：JP2001318187A
公开(公告)日：2001-11-16
申请号：JP2000133387
申请日：2000-05-02
申请人： MITSUBISHI HEAVY IND LTD
发明人： OSONO MASANARI , MATSUOKA HISAHIRO , HODE HIDE , OKAME SHINJI
IPC分类号： G21C19/32 , G21C19/06 , G21F3/00 , G21F5/008
摘要： PROBLEM TO BE SOLVED: To improve the heat conduction efficiency of a cask. SOLUTION: A plate member 201 is attached around a shell body 101 and on the part of the plate member 201 coming outside the cask, mountains are provided. Inside a space 206 formed with the plate member 201, an aluminum honeycomb member 210 combined with resin 106 is installed. The decay heat conducted to the shell body 101 is conducted to the plate member 201 constituting the cask outer surface via the plate member 201 and the honeycomb member 210 and radiated. At this time, by providing mountains 207 to the plate member 201 and spreading the radiation area, radiation efficiency is raised.

6. 发明专利

JP2001201594A CASK 失效
公开(公告)号：JP2001201594A
公开(公告)日：2001-07-27
申请号：JP2000012283
申请日：2000-01-20
申请人： MITSUBISHI HEAVY IND LTD
发明人： HODE HIDE , OSONO MASANARI
IPC分类号： G21C19/06 , G21F5/002 , G21F5/005 , G21F5/008 , G21F5/10 , G21F9/36
摘要： PROBLEM TO BE SOLVED: To improve the drainability of a double seal arranged between a cask body and a shielding body. SOLUTION: This cask comprises a primary lid 31 or secondary lid 32 for shielding the opening of the cask body for housing a spent nuclear fuel assembly; and annular double O-ring 10 arranged between the cask body and the primary lid 31 or secondary lid 32; a pressure air port 40 extending from the primary lid 31 or secondary lid 32 to the double O-ring 10 to inject pressurized air to the internal space of the double O-ring 10; a drain port 50 for draining the liquid pushed out by the pressurized air; and a soft metal 20 for forming a sealed wall in the internal space of the double O-ring 10, which regulates the route of the pressurized gas from the pressure air port 40 to the drain port 50 to a prescribed route. Since the inflow route of the pressurized air is regulated to the one route by this soft metal 20, the drainabilitiy of the double O-ring is improved.

7. 发明专利

JP2002174694A CLOSED CONTAINER FOR TRANSPORTATION AND STORAGE 失效
公开(公告)号：JP2002174694A
公开(公告)日：2002-06-21
申请号：JP2000373026
申请日：2000-12-07
申请人： MITSUBISHI HEAVY IND LTD
发明人： ASADA KAZUO , TAN YASUHIRO , HODE HIDE , MATSUOKA HISAHIRO , SAITO YUICHI
IPC分类号： G21C19/32 , G21F5/008 , G21F5/08 , G21F5/12 , G21F9/36
摘要： PROBLEM TO BE SOLVED: To provide a closed container for transportation and storage capable of maintaining high airtightness even if dropped or turned over. SOLUTION: An opening in the upper end of a container body 10 housing a spent fuel assembly is closed by a primary lid 20 and a secondary lid 22. The portion of contact between each of the primary and secondary lids and the container body is closed by a respective metallic gasket 26, (30). The secondary lid is provided on the top of the primary lid, with the lower surface 22a of the secondary lid in contact with the upper surface of the primary lid. A solid shock absorber 52 is mounted at the upper end of the container body to cover the overall outer surface of the secondary lid. The shock absorber includes an absorber body 54 formed of a shock absorbing material and a reinforcing plate 56 secured to the absorber body and provided in contact with the outer surface of the secondary lid.

8. 发明专利

JP2001296388A TRITIUM MEASURING DEVICE, SPENT FUEL STORAGE VESSEL LID, SPENT FUEL STORAGE VESSEL, IMPROVING METHOD FOR THE SPENT FUEL STORAGE VESSEL AND INTEGRITY CONFIRMATION METHOD FOR SPENT FUEL 失效
公开(公告)号：JP2001296388A
公开(公告)日：2001-10-26
申请号：JP2000116430
申请日：2000-04-18
申请人： MITSUBISHI HEAVY IND LTD , NUCLEAR DEV CORP
发明人： NAITO HIROYASU , OSONO MASANARI , HODE HIDE , DOI HIDEO
IPC分类号： G21C19/32 , G01T7/02 , G21C19/06 , G21F5/008 , G21F5/12 , G21F9/36
摘要： PROBLEM TO BE SOLVED: To confirm the integrity of spent fuel stored in a cask 10. SOLUTION: The vessel comprises a closed-end cylinder shell body 1 for containing spent fuel 5, an inner lid 6 sealing the shell body 1 inside, and an outer lid 8 sealing the shell body 1 inside in the upper part of the inner lid 6 and forming a pressure chamber 11 within the inner lid 6 and forming an opening 16 where a paradium alloy film terminal 17 for tritium measurement is attached penetrating the pressure chamber 11. Tritium in hydrogen gas collected with the paradium alloy film terminal 17 is detected in a collection chamber 22 and integrity of the spent fuel 5 stored in a cask 10 is confirmed at the site during the serving period in stored state of the spent fuel 5.

9. 发明专利

JPH10160895A SUPPORT DEVICE FOR TRANSPORTATION OF UNCLEAR FUEL ASSEMBLY 失效
公开(公告)号：JPH10160895A
公开(公告)日：1998-06-19
申请号：JP32176296
申请日：1996-12-02
申请人： MITSUBISHI HEAVY IND LTD
发明人： HODE HIDE , YOKOYAMA TAKESHI , SHODA RYUHEI
IPC分类号： G21F5/14
摘要： PROBLEM TO BE SOLVED: To simplify and shorten binding work of nuclear fuel assemblies for transportation by providing a plurality of drive shafts extending in parallel to the internals of a transportation cask and gear mechanism for rotating the shafts in reverse directions to each other and keep link mechanism. SOLUTION: Drive shafts 11 and 13 supported freely rotatably extend in parallel penetrating a supporting projection of an internal 8 in a transportation cask and a spur gear 15 is fitted at the end of the shaft 11. When the end 11a of the shaft 11 is rotated, the shafts 11 and 13 are rotated in reverse directions to each other and the two nuts 19 moves in leaving or approaching directions to each other. If they move in approaching directions, the following roller and roller guide 29 approach to each, other, the two links 31 become parallel, the vertical distance between a guide boss 25 and a link plate 33 becomes maximum and a keep plate 39 touches and suppresses the side of a fuel assembly. With this simple operation of pushing the keep plate 39 to the assembly, the assembly can be bound. Then, an upper casing and a lower casing are fixed to load on a trailer and the like and transport.

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