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JRM Vol.10 No.2 pp. 104-109
doi: 10.20965/jrm.1998.p0104
(1998)

Development Report:

Development of Bore Tools for Pipe Welding and Cutting

Kiyoshi Oka, Akira Ito and Yuji Takiguchi

Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, 2-4 Shirakata-shirane, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan

Received:
March 9, 1998
Accepted:
April 18, 1998
Published:
April 20, 1998
Keywords:
ITER, Cooling pipe maintenance, YAG laser, Welding/Cutting, Bor tool
Abstract

In the International Thermonuclear Experimental Reactor (ITER), in-vessel components replacement and maintenance requires that connected cooling pipes be cut and removed beforehand and that new components be installed to which cooling pipes must be rewelded. All welding must be inspected for soundness after completion. These tasks require a new task concept for ensuring shielded areas and access from narrow ports. Thus, it became necessary to develop autonomous locomotion welding and cutting tools for branch and main pipes to weld pipes by in-pipe access; a system was proposed that cut and welded branch and main pipes after passing inside pipe curves, and elemental technologies developed. This paper introduces current development in tools for welding and cutting branch pipes and other tools for welding and cutting the main pipe.

Cite this article as:
Kiyoshi Oka, Akira Ito, and Yuji Takiguchi, “Development of Bore Tools for Pipe Welding and Cutting,” J. Robot. Mechatron., Vol.10, No.2, pp. 104-109, 1998.
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