| 摘要 |
PROBLEM TO BE SOLVED: To implement the safe and efficient demolition of an airtight container by cutting and opening through remote manipulation the airtight container 1 containing metallic materials radioactivated by neutron irradiation in a nuclear reactor and the like and radioactive gas, by trapping radioactive gas generated at that time into a closed pedestal, and by efficiently recovering the radioactive gas through a simple technique. SOLUTION: The airtight container 1 containing radioactivated metallic materials and radioactive gas is installed within a closed pedestal 9 and the arbitrary cutting position is determined by a vertical movement mechanism section 6. After fixing the airtight container 1 firmly with an upper clamp mechanism section 5 and a lower clamp mechanism section 4, by moving a cutoff tool 2 forward-and-backward by a cutoff tool slide moving mechanism section 7, the airtight container is cut by little and little. Discharged radioactive gas during the period of cutting off of the airtight container 1 is recovered with a radioactive gas recovery system I. COPYRIGHT: (C)2009,JPO&INPIT
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