Experience for Fukushima Environmental Radiation Monitoring and Application for Preparedness of Post-accident

An increasing need to measure the distribution of radionuclides around the Fukushima Daiichi Nuclear Power Plant emerged after the occurrence of an accident. Environmental monitoring was conducted in collaboration with researchers and engineers from all over Japan to clarify the distribution of radionuclide deposits and air dose rates in the environment. Therefore, new technologies for radiation measurement have been developed after the accident. In particular, aerial radiation monitoring using unmanned aerial vehicles and measurement technology for radioactive substances deposited on waterbeds have been developed, and these technologies have been applied to the monitoring in the environment. This article provides an overview of these technologies developed after the accident.