METHOD OF REMOVING TRACE AMOUNT OF RADIOACTIVE ELEMENT GENERATED IN STORAGE OF URANIUM OBTAINED BY REPROCESSING IRRADIATED NUCLEAR FUEL

摘要

PURPOSE: To operate and use retreated uranium under normal conditions and to store it again by passing it through a chemically inactive porous substance in liquid-shaped or gas-shaped hexasulfide form. CONSTITUTION: Reprocessed uranium is passed through a chemically inactive porous substance in liquid-shaped or gas-shaped hexasulfide form, where the porous substance should be formed, for example, by nets that are piled up each other and be stainless, nickel, and their alloy. Also, the diameter of the porous substance should be less than 100m, preferably 50m. Further, the passage speed of the liquid-shaped or gas-shaped hexasulfide should be 15-100m/ hour and the contact time with the porous substance should be 0.1-10sec.