Ministry of Economy, Trade and Industry report on actual conditions of processing and disposal of metal waste from nuclear power plants in fiscal year 2025.
Key Points
1. Metal Waste Generation Status
- Detailed assessment of annual metal waste generation at each nuclear power plant
- Increasing trend in metal waste generation with progress in decommissioning work
- Classification by radioactivity levels (L1, L2, L3, clearance targets)
- Storage capacity and future storage plans
2. Current Status of Processing and Volume Reduction Technologies
- Application status of decontamination technologies (chemical decontamination, blast decontamination, etc.)
- Implementation status and effects of volume reduction through melting treatment
- Current status of physical volume reduction processing such as cutting and compression
- Equipment installation status at each electric power company
3. Utilization of Clearance System
- Reuse results of metal waste below clearance levels
- Improvement of clearance measurement and evaluation technologies
- Examples of processing into recycled products (benches, blocks, etc.)
- Efforts to improve social acceptance
4. Advanced Cases from Other Countries and Challenges
- Trends in metal waste processing technologies in Europe and America
- Integrated processing technology for large equipment
- Consistency with international safety standards
- Recommendations for improving Japan's processing system
This survey provides fundamental data for appropriately managing and processing increasing metal waste from nuclear facilities, promoting effective resource utilization and reduction of final disposal volumes.