The activities and services to be performed under this framework contract are aimed at ensuring the maintenance of the Magnet Power Supply Systems (MPS) of JT-60SA, in order to ensure their availability to perform timely the experimental campaign of JT-60SA. The scope of supply includes the delivery of hardware (i.e. spare parts, new developments) and associated software as well the needed maintenance, installation and commissioning services which encompass project management and engineering support services.