Annual report for FY2024 on the activities of Department of Decommissioning and Waste Management (April 1, 2024 - March 31, 2025)

Department of Decommissioning and Waste Management

This report summarizes the activities carried out in FY2024 by the Department of Decommissioning and Waste Management (DDWM) at the Nuclear Science Research Institute (NSRI). It provides an overview of the operations and maintenance of the assigned facilities, the treatment and management of radioactive waste, decommissioning activities, and related technical development work. In FY2024, radioactive waste generated from R&D activities at NSRI was safely treated, including approximately 165 m of combustible solid waste, 185 m of non-combustible solid waste, and 232 m of liquid waste. As of the end of FY2024, the cumulative volume of stored waste packages reached 119,601 (in 200-liter drum equivalents), representing an increase of 937 packages compared with the previous fiscal year. In addition, efforts were made to comply with the new regulatory requirements for waste management facilities. With regards to decommissioning activities, equipment removal and related work were carried out at the Japan Reprocessing Test Facility (JRTF) and the Plutonium Research Building No.1. In the field of technical development, radioactivity data were obtained from waste samples toward the establishment of waste radioactivity evaluation methods. Furthermore, at the request of the Ministry of the Environment and Tokai-mura office, JAEA conducted a demonstration project on the landfill disposal of the contaminated soil generated by the accident of the Fukushima Daiichi Nuclear Power Station.