Remote Resistance Welding of Zr-4 Endplate for DUPIC Fuel Fabrication

Soo Sung Kim; Dae Seo Koo; Geun Il Park; Jin Hyun Koh

doi:10.4028/www.scientific.net/MSF.580-582.397

Paper Titles

Monitoring of Backside Image of Molten Pool during Aluminum Pipe Welding Using Vision Sensor
p.379

Grades 92 and 23: Weldability Assessment and Long-Term Performances for Power Generation Applications
p.383

Mechanical and Microstructural Properties of Dissimilar Friction Spot Welded Aluminum Alloy
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Hybrid Friction Stir Welding of Carbon Steel
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Remote Resistance Welding of Zr-4 Endplate for DUPIC Fuel Fabrication
p.397

Numerical Study on the Effectiveness of Fixture and Pre-Strain for Reduction of Welding Distortion
p.401

Linear Friction Welding of Ti-6Al-4V Alloy: Microstructure Characterization
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Liquid Penetration Induced Cracking in Mg-Alloy Spot Welds
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The Failure Strength Evaluation on Resistance Welding Mixed Adhesive Bonding
p.413

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Remote Resistance Welding of Zr-4 Endplate for DUPIC Fuel Fabrication

Abstract:

The remote resistance welding technology in the hot cell environment for DUPIC (Direct Use of spent PWR fuel In CANDU reactors) fuel fabrication was established. To do this, a preliminary investigation for hands-on fuel fabrication outside the hot cell was conducted in the consideration of constraints caused by welding in the hot cell. Further welding experiments were carried out to improve the RW process. A remote resistance welding apparatus was developed. The characteristics of welds made by RW and LBW were compared in terms of the weld nugget penetrations and torque strength. It was found that resistance welding was a more suitable welding process for joining the endplate to the end caps in the hot cell. The optimum conditions for RW in the hot cell operation in a remote manner were also obtained.