• Research Center for Radiation Emergency Medicine, National Institute of Radiological Sciences

 Government and Official Agencies

• Ministry of Economy, Trade and Industry
• Ministry of Health, Labor and Welfare
• Ministry of Land, Infrastructure and Transport
• Ministry of Education, Culture, Sports, Science and Technology
• Atomic Energy Commission
• Nuclear Safety Commission
• Japan Science and Technology Corporation
• High Energy Accelerator Research Organization
• Japan Atomic Energy Agency
• Disaster Prevention Network for Nuclear Environments (Disaster Prevention and Nuclear Safety Network for Nuclear Environment)

 Public-Interest Corporations

• Ibaraki Atomic Energy Consultatio
• Japan Radioisotope Association
• Japan Radiological Society
• Japan Industries Association of Radiological Systems
• Atomic Energy Society of Japan
• Japan Atomic Industrial Forum
• Japan Safety Appliances Association
• The Japan Association of Radiological Technologists
• Japanese Society of Radiological Technology
• Nuclear Safety Technology Center
• Nuclear Safety Research Association (NSRA)
• Radiation Effects Association
• Institute of Radiation Measurements