Conference Proceedings Paper
HYBRID LASER ARC WELDING OF A USED FUEL CONTAINER
35th Annual CNS Conference - 2015 May 31 - June 3
C. Boyle (Nuclear Waste Management Organization)
P. Martel (Novika Solutions)
The Nuclear Waste Management Organization (NWMO) has designed a novel Used Fuel Container (UFC) optimized for CANDU used nuclear fuel. The Mark II container is constructed of nuclear grade pipe for the body and capped with hemi-spherical heads. The head-to-shell joint fit-up features an integral backing designed for external pressure, eliminating the need for a full penetration closure weld. The NWMO and Novika Solutions have developed a partial penetration, single pass Hybrid Laser Arc Weld (HLAW) closure welding process requiring no post-weld heat treatment. This paper will discuss the joint design, HLAW process, associated welding equipment, and prototype container fabrication.
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