Progress in the integration of Test Blanket Systems in ITER equatorial port cells and in the interfaces definition

In the framework of the TBM Program, three ITER vacuum vessel equatorial ports (#16, #18 and #02) have been allocated for the testing of up to six mock-ups of six different DEMO tritium breeding blankets. Each one is called a Test Blanket System (TBS). A TBS consists mainly of the Test Blanket Module (TBM), the in-vessel component facing the plasma, and several ancillary systems, in particular the cooling system and the tritium extraction system. Each port accommodates two TBMs and therefore the two TBSs have to share the corresponding port cell. This paper deals with the design integration aspects of the two TBSs in each port cell performed at ITER Organization (IO) with the corresponding definition of interfaces with other ITER systems. The performed activities have raised several issues that are discussed in the paper and for which design solutions are proposed.

► The design integration of two test blanket systems in ITER port cell is addressed. ► Definition of interfaces of TBSs with building and other ITER systems is done. ► Designs of pipe forest, bioshield plug and ancillary equipment unit are described. ► The maintenance of the two test blanket systems in ITER port cell is considered. ► The management of the heat and tritium releases in the TBM port cell is described.