A FABRICATION METHOD OF NUCLEAR FUEL PALLET FOR HEAVY WATER REACTOR USING SPENT NUCLEAR FUEL

摘要

PURPOSE: A method for manufacturing a nuclear fuel pellet for a heavy-water reactor using spent nuclear fuel is provided to reduce nuclear fuel storing and treating costs in a pyro process. CONSTITUTION: A mixed nuclear fuel is made by mixing a spent nuclear fuel. U3O8 powder is made by oxidizing metal uranium under an air atmosphere. Uranium dioxide power is made by reducing U3O8 powder under a hydrogen atmosphere. The uranium dioxide is changed to a forming agent. A nuclear fuel pellet is made by sintering the forming agent under a reductive gas atmosphere.