Overview and Conclusions on the Results Obtained in Research Area C: The Release and Distribution of Radioactive Fission Products in the Atmosphere following a Reactor Accident

Summary

The paper presents the scope of work in all research projects of this area and gives a short description of selected results obtained, with a conclusion on the progress obtained in the area. In this sub-programme, a total of 13 research projects was executed in different national laboratories of the EC. It deals with the transport and diffusion in the atmosphere and with the possible ground deposition of active fission products released from the damaged reactor core during the course of a severe accident. Most of the projects are dealing with the study of a number of “partial effects” contributing to transport, diffusion and deposition. This area covers experimental and theoretical studies modelling and code development and validations /assessments by field trials or by simulations in wind — and water tunnels.