先進型原子炉の設計プロセスの革新を実現するARKADIAの開発

（設計最適化支援ツールARKADIA-Designの開発状況）

抄録

Japan Atomic Energy Agency is developing an innovative design system named ARKADIA to achieve the design of an advanced nuclear reactor as a safe, economic, and sustainable carbon-free energy source. ARKADIA consists of three systems: the Enhanced and AI-aided optimization System (EAS), the Virtual plant Life System (VLS), and the Knowledge Management System (KMS). In the first phase of its development, ARKADIA-Design for design study and ARKADIA-Safety for safety assessment are being developed individually. In this paper, focusing on the ARKADIA-Design, achievements in the development of optimization processes in the fields of the core design, the plant structure design, and the maintenance schedule planning, as major function of ARKADIA-Design, and numerical analysis methods to be used for the detailed analysis to confirm the plant performance after optimization are introduced at this point in time.