[en] 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

[en] After permanent shutdown of Kori #1, Korea has developed various decontamination and decommissioning technologies. Due to the long period operation, Kori Npp's would be a little contaminated with radioactive material. Thus, it is necessary to developthe technology of soil washing and contaminated water purification. For this, Elim Global Inc. is developing the decontamination technology for contaminated soil management. This study introduced the characteristic of zeolite adsorbents and application of ion-exchange fibers for effective removal of activity. Next researches talk about synthesizing zeolite that has good adsorption capability for particular radionuclides and develop hybrid-treatment device of the synthesized zeolite and ion-exchange fibers and perform treatment experiments of wastewater from decontaminated soil-washing