Abstract
The Fukushima nuclear accident contaminated a large area, and radioactive contaminated particles adhered on the external wall surface by dirt deposition and rainfall. In order to remove these contaminated particles from the surface, a prediction method for the contaminant area and the amount of adhesive particle on the surface should be needed. In this study, a framework on the prediction of adhesion for particle contaminated with radioactive material on an external wall surface by rainfall was proposed.