1) Selection and experimental verification of suitable salts to be used as a molten bath for the MSO technology with selected types of radioactive waste - consideration of all of the technological, operational, and economical factors. 2) Verification of applicability of borate concentrates produced in cleaning station of the primary circuit of VVER type nuclear power plants as molten bath media for organic wastes oxidation. 3) Proposal of optimized conditions for processing of selected radioactive waste in the melt based on carbonate salts and boritane concentrates - consideration of all of the technological, operational, and economical factors. 4) Transfer and verification of laboratory experiments results to the semi-pilot plant. 5) Verification of fundamental parametres and acquisition of balance data using the semi-pilot plant for processing selected uncontaminated and/or contaminated radioactive waste. 6) Testing of semi-pilot plant with real radioactively uncontaminated and contaminated waste. 7) Assessment of the future applicability of the MSO technology in the industrial scale based on the data obtained.