The domestic nuclear power plants have achieved the world's highest standards of safety and successfully resumed operations through the implementation of severe accident prevention and mitigation facilities. As a result, the addition of safety measures has increased the number of managed facilities, leading to a greater workload on personnel responsible for their operation and maintenance. The reduction in the number of operating units has resulted in fewer opportunities for experience, and the succession of skills due to the retirement of experts is also a concern. In nuclear power plants, while automation of operational procedures has been advanced, indirect operation and maintenance tasks involve many personnel. By leveraging rapidly evolving digital technologies, we expect significant improvements in integrated equipment management, workload reduction, and the transfer of technical knowledge. Mitsubishi Heavy Industries, Ltd. proposes the concept of "Digital Twin from Three Perspectives" to address these challenges and is developing solutions based on this concept. We are currently implementing and piloting some aspects while incorporating feedback from electric power companies, and we aim to further advance through the development of new solutions and the interconnectivity of multiple solutions.
