Fabrication of an ITER Shielding Blanket Prototype

A full-scale prototype mockup of the ITER shielding blanket composed of the first wall with built-in circular tubes and the shield block has been successfully fabricated. Joints of the first wall/the shield block as well as those of the DSCu/DSCu, DSCu/SS and SS/SS in the first wall, were simultaneously HIP bonded. The fabricated prototype mockup fully satisfied the specified design conditions such as dimensional accuracy, pressure-resistance, etc. After HIPping, HIPped interfaces were metallographically observed with pieces cut from the edge of the mockup. There were no harmful voids at the bonded interfaces, and good bondability of simultaneous HIP method was confirmed. In addition, engineering data on fabrication including bonding deformation were obtained.