This Framework Contract (FWC) concerns the provision of engineering support services required during the procurement, tests, installation and commissioning of the different Electron Cyclotron Heating and Current Drive system (EC systems) i.e. of High Voltage Power Supplies (HVPSs), RF power sources (also named Gyrotrons), transmission lines (TLs), launcher port plugs plus auxiliary sub-systems and services, control systems and test facilities.