| 摘要 |
PROBLEM TO BE SOLVED: To provide a disposal container and its manufacturing method for radioactive waste which is a disposal container containing a plurality of waste canisters when disposing of TRU wastes by setting radioactive waste deep underground, ensures sufficient pressure tightness and strength, be superior in mass productivity and can reduce the cost by simplifying welding process control. SOLUTION: A main body 2a with a size capable of containing 7 waste canisters 1 in regular hexagon arrangement is formed by, for example, deep drawing of steel plate for pressure vessel into a seamless cylinder with bottom, and welding a bottom plate 2b to the open side of the main body 2a to be a disposal container 2. To the bottom plate 2b, a proper number of rod stays 3 are stood and annular rod stay receivers 4 are provided to the inner side of the ceiling 2c of the main body 2a. In the welded state of the bottom plate 2b and the main body 2a, the tip ends of the rod stays 3 are made to contact or approach the rod stay receivers 4 so that the load in the axial direction of the disposal container 2 is received with the rod stays 3. COPYRIGHT: (C)2006,JPO&NCIPI
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