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To achieve the overall ITER machine availability target, the availability of diagnostics and heating port plugs shall be as high as 99.5%. To fulfill this requirement, it is mandatory to test the port plugs at operating temperature before installation on the machine and after refurbishment. The ITER port plug test facility (PPTF) is composed of several test stands that can be used to test the port plugs whereas at the end of manufacturing (in a non-nuclear environment), or after refurbishment in the ITER hot cell facility. The PPTF provides the possibility to perform environmental (leak tightness, vacuum and thermo-hydraulic performances) and functional tests (radio frequency acceptance tests, behavior of the plugs’ steering mechanism and calibration of diagnostics) on upper and equatorial port plugs. The final design of the port plug test facility is described. The configuration of the standalone test stands and the integration in the hot cell facility are presented. [ABSTRACT FROM AUTHOR]

The port plug test facility (PPTF) in the ITER hot cell building (HCB) will be used to test activated equatorial port plugs (EPP). The design of the PPTF and the HCB walls adjacent to the PPTF aims to have the docking room, which is next to the test tank room containing the PPTF, having as low as reasonable dose rate of 25 μSv/h. In this work, the R2Smesh approach, developed by KIT for the determination of shut-down dose rate distributions in and around activated components, was used to provide high resolution maps of dose rate distributions in the test tank room, the docking room and the service room, assuming an activated diagnostic generic equatorial port plug (GEPP) module in the PPTF. The results show that the shielding is not enough with the preliminary PPTF and rooms design. A design optimization was performed in order to improve the radiation shielding around the PPTF. The results show that with an optimized design dose rates less than 25 μSv/h can be achieved in the docking room and the service room. [ABSTRACT FROM AUTHOR]