Payload Preparation Complex (EPCU)
Complementing some original CNES facilities and others built later for the Ariane development programme, ESA has constructed a satellite-preparation complex halfway between the Technical Centre and the launch site. It will be used for satellite and control equipment unpacking, mechanical inspections, and check-out of the various platform and payload subsystems. It will also be used for the final integration of the payload composite before its transfer to the mobile gantry for hoisting onto the top of the launcher.