WELDED PART PROCESSING DEVICE AND METHOD OF REMOVING DEFECT OF WELDING PART

摘要

PPROBLEM TO BE SOLVED: To provide a welded part processing device which is easy to be placed in boiling water reactors for removing defect part of welded part formed when a CRD stub tube in which a trouble has occurred is replaced. PSOLUTION: The welded part processing device 1 capable of processing welded parts 5 and 7 formed when the CRD stub tube 3 is welded to the inside surface of the lower mirror 103 in the boiling water reactor 100, has a base member 9 capable of inserting the tip end side into a penetration hole 117 for CRD housing provided to the lower mirror 103 from the bottom of the lower mirror 103, an angle head 11 supported by the base member 9 and being capable of inserting inside the lower mirror 103 through the penetration hole 117 when the tip end side of the base member 9 is inserted in the penetration hole 117, and a fixing means 13 freely fixing the tip end side of the base member 9 inserted in the penetration hole 117 to the penetration hole 117. PCOPYRIGHT: (C)2004,JPO&NCIPI