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1. 发明专利

JPH04130298A DEVICE FOR COLLECTING CUT POWDER OF BURNABLE POISON BAR 失效
公开(公告)号：JPH04130298A
公开(公告)日：1992-05-01
申请号：JP25271990
申请日：1990-09-20
申请人： KOBE STEEL LTD
发明人： NARAI TOSHIHIRO , TAGUCHI MICHIHISA , FURUTA NAOYUKI
IPC分类号： G21C19/02 , G21C19/37 , G21F9/30
摘要： PURPOSE:To prevent contamination of a pool etc. due to diffusion previously by regulating traveling range by housing and by sucking outside the housing with water flow which is directed from a hood to the outside of the housing. CONSTITUTION:A cut powder 47 is generated from a burnable poison bar BP. This location of occurrence is covered with a housing 30, thus preventing the cut powder 47 from being spread to an entire area of a pool. Further, water flow is formed by a circulating pump 34, light particles in small diameter within the cut powder 47 are placed on the water flow and are sucked to the outside through hoods 31 and 32 from the inside of the housing 30, and then they are collected by a filter 36. On the other hand, the particles in large diameter settle out into the housing 30 so that a switching board 46 is opened after cutting and then they are stored into a storage container from a carrying-out port 38 which connects inside and outside of a bottom part of the housing 30 along with the poison bar BP. Namely, traveling region of the cut powder 47 is limited by the housing 30 and at the same time the particles in small diameter are sucked by a pump 34 and the particles in large diameter are collected along with the poison bar BP which is cut to short length, thus preventing contamina tion of a pool previously.

2. 发明专利

JPH09127296A METHOD AND DEVICE FOR MELTING TREATMENT OF RADIOACTIVE METALLIC WASTE 失效
公开(公告)号：JPH09127296A
公开(公告)日：1997-05-16
申请号：JP31161395
申请日：1995-11-06
申请人： KOBE STEEL LTD
发明人： FURUTA NAOYUKI
IPC分类号： G01M3/20 , F27B14/10 , G01T1/167 , G21F9/30
摘要： PROBLEM TO BE SOLVED: To prevent a possible steam explosion due to molten radioactive substances and cooling water by confirming whether a crack has occurred in a water-cooled copper wall crucible and by detecting the inflow permeation or leakage diffusion of radioactive substances into the cooling water in the melting and solidification of radioactive metallic wastes. SOLUTION: The radioactivity of cooling water is detected on the outlet side of the cooling water cooling a water-cooled copper wall of a water-cooled crucible induction furnace where the water-cooled copper wall is used as a crucible. Then, an induction coil 13 is placed on the top outside the wall and there is a space for melting radioactive metallic wastes 1 inside it. Moreover, a starting block 8 is placed in the bottom of the melting space, and a water- cooled copper wall crucible 4 is provided whose copper wall incorporates a cooling water passage connected with a cooling water outlet 9 where a radioactivity detector 2 is placed on the outlet side and a cooling water intake 10.

3. 发明专利

JPH03209199A METHOD FOR STORING ELONGATE BODY HAVING CIRCULAR SECTION 失效
公开(公告)号：JPH03209199A
公开(公告)日：1991-09-12
申请号：JP513890
申请日：1990-01-11
申请人： KOBE STEEL LTD
发明人： TAGUCHI MICHIHISA , NARAI TOSHIHIRO , FURUTA NAOYUKI
IPC分类号： G21F9/36 , B65B5/10
摘要： PURPOSE:To store long-sized bodies having a circular cross section with a high packing rate by throwing elongate bodies having a circular section to an inclined storage vessel through a chute and inclining the storage vessel furthermore and rotating it around the axis passing the centers of the aperture part and the bottom of the vessel. CONSTITUTION:Elongate bodies (b) having a circular cross section are slided down along a chute 2 and are thrown into an inclined storage vessel 1. When lower ends of elongate bodies (b) abut on a bottom 1b of the vessel 1, lower ends are slided along the slope of the bottom 1b, and upper ends of long-sized bodies (b) abut on an inside wall 1c of the vessel 1. When the vessel 1 is inclined furthermore if necessary and is rotated around an axis 5 passing the centers of an aperture part 1 and the bottom 1b of the vessel 1, elongate bodies (b) have lower end sides slided down along the bottom 1b while being rotated, and elongate bodies (b) are not only made parallel with the inside wall face 1c but also arranged in parallel with one another. Consequently, elongate bodies (b) are surely stored in the vessel 1 with a high packing rate.

4. 发明专利

JPH0348799A METHOD AND DEVICE FOR SHREDDING CHANNEL BOX AFTER USE 失效
公开(公告)号：JPH0348799A
公开(公告)日：1991-03-01
申请号：JP18668589
申请日：1989-07-18
申请人： KOBE STEEL LTD
发明人： TAGUCHI MICHIHISA , NARAI TOSHIHIRO , FURUTA NAOYUKI , OSE TOSHIHIKO
IPC分类号： G21C19/375
摘要： PURPOSE:To further shred a channel box reduced piece efficiently by cutting channel box reduced piece corner parts longitudinally and cutting two pieces which are divided by the longitudinal cutting laterally and repeating the cutting alternately. CONSTITUTION:When the channel box reduced piece which are reduced into L-sectioned member 22 are further shredded, the corner parts of channel box reduced piece are sheared longitudinally with a push cutting blade 46 by specific size and two pieces 22b which are divided mutually by the shearing are further sheared laterally with a receiving blade 41 and separated from other parts; and those longitudinal shearing and lateral shearing are repeated. Consequently, L-sectioned channel box reduced pieces are shredded continuously by the single device. Therefore, the process for longitudinal cutting and the process for lateral cutting need not be performed individually and the throughput can be improved.

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