Introduction to decontamination technology of soil decommissioning NPP

This project is being carried out to develop the soil decontamination technology in preparation for decommissioning of Kori #1. The purpose of this project is to develop the pilot scale (1.2 m³/hr) automatic soil decontamination system that decontaminates the contaminated soil and purifies the wastewater based on the high pressure washing and ultrasonic process after classification of contaminated soil. In this paper, the soil decontamination cases and techniques in Japan and an overview of the whole process of the automatic soil decontamination system to be developed is introduced. Since the NPPs in Korea are expected to be gradually decommissioned, securing the source technology for decommissioning is becoming more important. Through this project, it is expected that the development of a soil decontamination system optimized for decommissioning NPP will be able to meet the domestic market demand and lay the foundations for entering the decommissioning market in the world