The purpose of the services and supplies included in this framework contract is to support the maintenance, troubleshooting and possible improvements of the Cryogenic Systems for JT-60SA. This includes: preventive maintenance, corrective maintenance, cryogenic system upgrades, and the procurement of spare parts and components in such a way as not to interfere with the JT-60SA experimental campaigns and to provide rapid access to resources in the event of in-service failures.