October 24, 2022 We held an IER Special Seminar. ＜Prof. Johnson and Prof. Yoschenko＞

In some of the classes of the Master’s Program of Major in Environmental Radioactivity, distinguished external researchers are invited as guest lecturers, and their classes are open to other faculty members on campus as “Special Seminars”.

On October 24, Professor Vasyl Yoschenko and Guest Speaker Professor Thomas Johnson gave a joint lecture on the subject “Environmental Radioactivity Science II”. The lecture covered the history and current state of radioecology. The IER Graduate School students and IER researchers attended the lecture. The lecture was also streamed online. In a complementary manner, the lecturers talked about the formation of radioecology, its goals and relationship to other sciences, as well as the challenges and prospects of radioecology for the future. Using illustrative examples, the basic units used in dose assessments were explained and the need to justify countermeasures based on a detailed risk analysis was shown. The audience actively participated in the Q&A session, which covered issues related to the planned discharge of tritium-containing ALPS treated water from the Fukushima Nuclear Power Plant into the ocean, the use of radionuclides as tracers, stakeholder involvement in radioecological projects, the connection of radioecology and health physics, and others.