Following the successful
Final Design Review for the ITER blanket in April 2013, the first of seven Procurement Arrangements for the blanket system were signed last week between the ITER Organization and the Chinese and Korean Domestic Agencies.
China and Korea will share the procurement of the blanket shield blocks—the "backside" of the 440 blanket modules that support the plasma-facing first wall and provide neutron shielding for the vacuum vessel and coil systems. These thick steel blocks, weighing up to four tonnes a piece, also have to accommodate interfaces with other components and in particular a large number of diagnostic systems. For this reason there are a total of 28 major design variants and 150 or more minor design variants.
"Last week's signatures were the culmination of several years of design and R&D effort on the part of the ITER Organization and the Domestic Agencies," says Rene Raffray, Blanket Section Leader. "Working together with the ITER Organization as part of the Blanket Integrated Product Team (
BIPT), the procuring Domestic Agencies have been fully involved in the design since the start."