Operability of the ITER Hot Cell Facility

The maintenance operation of the ITER in-vessel components are executed in the Hot Cell Facility (HCF). Therefore maintenance requirements and the operability analysis are essential inputs for the design. To fulfill the maintenance strategy, the HCF shall be capable of refurbishing and replacing vacuum vessel components and processing radwaste simultaneously. Based on the top level project requirements, the design scenario giving the most stringent constraints is based on the following tasks during the main shutdown: replacement of 54 cassettes, 3 Test Blanket Modules Port Plugs, the In Vessel Viewing System, the repair of 2 Equatorial and 2 Upper Port Plugs and the use of the Multi-Purpose Deployer. The operability between shutdowns needs also to be compliant with scheduled and unscheduled maintenance tasks. Furthermore, regular maintenance of the facility itself needs to be considered. This paper will outline the methodology, the basic tasks considered and it will present the schedule during shutdown and between shutdown periods. The goal is also to check the use rate of each workstation.