CLADS' efforts toward environmental remediation
At CLADS, in collaboration with Fukushima Prefecture and National Institute for Environmental Studies, we are actively conducting research and development and support activities toward environmental remediation and an early return of residents to their homes in "Fukushima." Results of research and development will be shared as science-based information utilized to make municipal plans for community rebuilding and for efforts toward the regeneration of agriculture, forestry, and fisheries.
To understand the behavior dynamics of residual radioactive materials in mountainous and forested areas caused by water flow and wind, we first acquire data through field surveys and laboratory experiments. Thereafter, we examine the process of the transfer of radioactive materials to residential areas and oceans.
We are developing measurement techniques for various environments, such as lands, rivers, and oceans, and examining the distribution and transfer of radioactive materials. We are also developing a new measurement technique where details of radiation can be visualized in places closely associated with living environment such as in and outside of a home.
Introduction to environmental remediation research
Distribution of radioactive Cs in forests and the prediction of radioactive Cs concentrations in trees.Past studies have shown that the annual outflow of radioactive cesium (Cs) that was deposited in forests during the TEPCO Fukushima Daiichi Nuclear Power Plant (1F) accident is less than 1% of the initial deposition.
Development of analytical methods for trace radionuclides in environmentOur group has researched the environmental dynamics of radionuclides that were released from the Fukushima Daiichi Nuclear Power Station (1F).
Temporal changes in deposition status of radiocesium in terrestrial environmentsFollowing the accident at TEPCO Fukushima Daiichi Nuclear Power Station (1F), the impact on human health in the disaster area was assessed using exposure doses as an index (Sv).
Development of nuclear power disaster prevention tools (terrestrial)When measuring radiation in Japan, after the accident at the TEPCO Fukushima Daiichi Nuclear Power Station (hereafter "1F"), research and development (R&D) into "aspects" over a wide area based on the measurement of "hot spots," i.e., "points" has become essential.
Publishing achievements through the Fukushima Environment Database and Knowledge Base (FaCE!S)More than 10 years have passed since the Fukushima Daiichi Nuclear Power Plant (F1NPS) accident, and the reconstruction is progressing.
Establishing safe, easy, and low-cost assessment methods of atmospheric radioactive material concentration/behavior using moss bagsIn the surrounding area of 1F, dust samplers has provided data about the radionuclide concentration in the atmosphere. However, as they are expensive and need an electric power supply, the number of samplers and locations in which they can be installed have been limited.
- Exposure dose predictions that consider the behavior of radioactive materials in inland waters
- A study on the form of radioactive cesium in trees
- Development of a metal particle identification method through an efficient liquid phase collection of nano/micro-colloids dispersed in water and transmission electron microscopy (TEM)
- A study on the transfer behavior of radioactive cesium through organic matter decomposition
- Assessment of waste inventory using soil outside a specified nuclear power plant
- Assessment of dispersion of airborne radioactive dust
- Elucidation of nuclide migration behavior in surface environments using solid phase analysis and the improvement of a migration model
- Establishment of an analytical method for trace cesium and strontium to understand their behavior in an ecosystem
- Measurement of radiation using a germanium semiconductor detector with quality assurance
- Development of an infrastructure to share study results and exchange information
- Whole-body counter (WBC) surveys for the Fukushima Health Management Survey
- Multi-layered monitoring and exposure assessment at Specified Reconstruction and Revitalization Base
- Behavior of and temporal changes in radioactive cesium in marine environments
- Behavior of and temporal changes in radioactive cesium in Inland water environments
- Behavior of and temporal changes in radioactive cesium in Urban environments
- Development of nuclear power disaster prevention tools (Marine)