| 摘要 |
PROBLEM TO BE SOLVED: To provide a reactor piping inside checking device capable of surely checking piping in the inside, in a short time by remote control and drastically reducing the radiation does to workers. SOLUTION: The reactor piping inside checking device 31 comprises a checking device body 33 having a diameter capable of being inserted in piping 22, a checking tool 47 provided to the checking device body to reach the piping inside, and a holding device 39 for moving the checking tool with respect to the checking device body and holding in the desired position.
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