Abstract: There are many kinds of radioactive waste plastics produced by NPPs, which are now mostly treated by compression or incineration. While compression may cause drum burst and pellet rebound, resulting in waste volume increase; incineration produces toxic and harmful gases that pollute the environment. A new process is proposed, which adopt a flow of sorting, crushing, melting, pre-pressing and natural solidification, and supporting equipments are designed. After analysis and debugging of parameters, the volume reduction ratio of the process to treat radioactive waste plastics can reach 15.4.

Key words: Radioactive waste plastics, Volume reduction ratio, New process, Parameter