Data for: ITER PF6 Double Pancakes Stacking

Description

This paper focus on the main process of ITER PF6 DPs stacking. During stacking, the DP being stacked was firstly been placed in position by means of vacuum pads lifting system, laser tracker and stacking guiding tooling. To eliminate the thermal stress, the DP being stacked was then lifted up to 80-90% of its weight to allow free rotating and moving while inter-pancake joints copper sole soldering. At the end, the DP being stacked was released, followed by welding of lateral plates and wedges. The DPs stacking has been finished with an overall concentricity of less than 1mm and toroidal positioning of less than 5mm for each DP, which well met the technical requirements.

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