Abstract
This study was carried out to establish the remote resistance welding technology for a hot cell environment for Direct Use of spent PWR fuel In CANDU reactors (DUPIC) fuel fabrication. A preliminary investigation for a hands-on fuel fabrication outside a hot cell was conducted with consideration of the constraints caused by a welding in a hot cell. The optimum resistance welding parameters for the endplate welding process were obtained in terms of the welding current, electrode pressure, and welding time. The welds made on the basis of optimum welding parameters showed higher torque strength than those made by laser beam welding. The integrity of the welds fabricated by resistance welding was confirmed by the results of the torque test, an examination of the microstructure, and the fracture surface of the welds.
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