WPJET4: JET Enhancements WPJET1: JET Campaigns WPTFV: Tritium, fuelling & vacuum systems project WPSAE: Safety and Environment project WPBOP: Heat transfer, Balance-of-Plant and site project WPTFV: Tritium, fuelling & vacuum systems project WPJET4: JET Enhancements WPJET1: JET Campaigns WPSA: Preparation of exploitation of JT-60SA WPMAG: Magnets system project