Abstract
The ITER upper port stub extension (UPSE) of the vacuum vessel (VV) is classified into 2 categories according to its location and time to install; one is the central (even) UPSE which is welded at upper central position of the VV sector and delivered after attached to VV at factory. The other is the lateral (odd) UPSE which is welded at upper lateral position of the VV sector and the significant difference with the central UPSE is that the lateral UPSE is welded after whole VVs welded because this should be installed between adjacent VVs at Tokamak in-pit. The design of the dedicated assembly tool for the UPSE assembly has been developed by the Korean domestic agency (KODA). Adjustment system of this assembly tool has been also designed to meet the functional requirements requested by IO. For design verification of the UPSE assembly tool mentioned above, a mock-up has been fabricated in full size and tested according to the UPSE functional requirements for the assembly procedure. And the structural analysis results of the current design will be presented also.
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