An In-house disposal method for temporary stored powder-particle form wastes in the nuclear power plant less than disposal limit

摘要

The present invention relates to a method for self-disposal of wastes in the form of granules that are temporarily stored in a nuclear power plant, which are below the disposal limit, and the purpose is to process the wastes in the form of granules that are temporarily stored below the disposal limit into an easy-to-handle form to accurately and quickly By measuring and classifying radioactive contamination, the radioactive waste is classified as general industrial waste so that it can be disposed of on the body, thereby significantly increasing the cost of reducing radioactive waste and reducing the spread of contamination due to the dispersion of waste in the form of granules during handling. It is intended to prevent, as well as to prevent the internal exposure of workers during handling of waste in the form of granules, and the configuration includes a fine powder waste generation step of pulverizing the waste in the form of granules to generate fine powder waste; a hydrous fine powder waste generation step of generating hydrous fine powder waste by stirring while supplying moisture to the fine powder waste generated through the granular waste crushing step; a compression molded product waste molding step of generating a compression molded product waste having a predetermined size using a compression molding machine for the hydrous fine powder waste generated through the hydrous fine powder waste generation step; measuring and classifying the radioactive contamination level of the compression molded article waste for measuring the radioactive contamination level of the compressed molded article waste molded through the compression molding waste molding step, and classifying the compression molded article waste based on the measurement resu a self-disposal step of disposing of the compressed molded body waste that has been confirmed and classified as a self-disposal target waste through the measurement and classification step of radioactive contamination of the compressed molded body waste; It is characterized in that it consists of a radioactive waste disposal step of disposing of the compressed molded body waste, which has been confirmed and classified as radioactive waste, as radioactive waste through the radioactive contamination level measurement and classification step of the compressed molded body waste.