On November 10, 2016, IRSN took part in a joint symposium with
Ibaraki University on environmental studies related to the Fukushima Daiichi nuclear power plant accident. The symposium gathered together some fifty people from Ibaraki University, National Institute for Environmental Studies (NIES), Meteorological Research Institute (MRI) and IRSN. The nuclear advisor of the French embassy was also attending.
At the event, held in Mito (Ibaraki prefecture), the participants presented their most recent work (oral presentations and posters). Among many topics, one focused on the poorly known mechanisms involved in atmospheric deposits (fog, mist, etc.) and the return of radionuclides (through bioaerosol production, biomass fires, pollens, etc.) present in f the forest ecosystem to the atmosphere (re-emission). It was also the occasion for IRSN to present the various topics of the current collaboration in Japan.
On the sidelines of the symposium, new opportunities for collaborations with Ibaraki University as well as with Japan Meteorological Agency -
MRI (field experiment campaigns, modeling, etc.) were discussed. The main topics discussed concern the effect of mists (characteristics and leaching rate), aerosol granulometry and the re-emission of radioactivity via bioaerosols (spores, pollen and bacteria).
IRSN is expanding its collaboration with Ibaraki University, which was confirmed in April 2016 with the signing of a memorandum of understanding (MoU). The MoU defines the framework for data exchange and access to experimental instrument facilities located in contaminated regions in the field of atmospheric transfers and interactions between the atmosphere and the terrestrial environment. Many departments in IRSN's Radiation Protection Unit (Sesure, Seris and Steme) are part of the collaboration.
Symposium program (PDF)