Interaction between Simulated Nitride Spent Nuclear Fuel and Water and Nitric Acid
Data on physical and chemical conditions of fission products were considered in nitride MOX-fuel, calculated from simulated thermodynamic equilibrium of fuel and fission products, as well as from experiments concerning fission product distributions and conditions in simulated fresh fuel. Interaction between nitride MOX-fuel and water and nitric acid solutions were studied using simulated nuclear fuel. Experiments demonstrated that the interaction between nitride SNF and water resulted in fuel component escape into water phase. It was revealed that the dissolving of nitride fuel in the nitric acid was a practicable technological process. It should be also taken into account that an additional plutonium recovery from insoluble residues was necessary.