| 摘要 |
PURPOSE:To enable easily a tele-inspection of the upper lattice board inside an atomic reactor, by a remote operation of a displacement block, etc. available for integrated displacement with clamping mechanisms of base body and sensor holder. CONSTITUTION:Clamping mechanisms 8, 9 fixed opposedly on both ends of a base body 6 arranged horizontally on the upper lattice board 3 is remote- controlled by vertical direction air-cylinders 12, 16 and horizontal direction air-cylinder 14 controlled by a controller 27 and the base body 6 is fastened rigidly to the board 3. A feed screw 17 is controlled remotely in this condition and a sensor holder 20 integrated with a displacing block 19 and it is displaced in a long distance and supersonic flaw detection is performed on the board 3 by a flaw-detecting sensor 21 of a holder 20 and easy inspection of the upper lattice board inside an atomic reactor can be conducted from a distance. |
