Parametric modelling of EU-DEMO remote maintenance strategies and concepts

One of the major challenges in the commercialisation of fusion is maintaining the powerplant reactor in a sufficiently short period of time to achieve commercial levels of plant availability. To inform the development of an appropriate remote maintenance strategy for EU-DEMO, a simplified, parametric model, called the Maintenance Duration Estimator (MDE) has been created to model potential remote maintenance strategies for the in-vessel Components. This tool will inform the development of practical and efficient remote maintenance technologies and methodologies for EU-DEMO. Using the MDE model, it has been estimated that EU-DEMO will be able to achieve the required minimum 30% lifetime plant availability over a 20 year operational lifetime. Here we will present the structure and functionality of the MDE, as well as some case studies of analysis performed.