Atmospheric dispersion analysis in Fukushima accident as nuclear multiple-barrier extensions incorporated with Chernobyl case

Abstract

The study analyzes nuclear safety by the atmospheric dispersions near the Fukushima and Chernobyl nuclear accident sites. It is very strongly necessary to investigate on much more effective system to block exposure to the environment and eventually to humans in seashore and inland regions. The values are compared in an interesting design for the numeric results. In wind quantity variable cases, the simulations of radioactive dispersion in 1,000, 2,000, and 5000 days are analyzed. Results show the normalized radiation-concentration weighted Planetary Boundary Layer (PBL) in Fukushima and Chernobyl cases. We conclude that local contamination depended on air-filtering. Therefore, it is reasonable for the winter season when the north wind is very frequent in the Northern Hemisphere nations. Otherwise, in summer, the higher pressure should be in the south. So, it is helpful for us to use the seasonal wind directions in the nuclear safety concepts.