Issues on clearance of the spent resin from NPP

Clearance of slightly radioactive contaminated spent resin in an important work of waste minimzation for NPP. Based on the recent developments in clearance of spent resin, existing problems with spent resin management at nuclear power plants were summarized. Technical approaches for waste minimization of spent resin were proposed. Potential disposal options for spent resin are hazardous solid waste landfill disposal and co-processing in cement kilns, when high temperature incineration disposal is currently not sufficiently approved. To improve the efficiency of minimizing such solid wastes in nuclear power plants and reduce the costs, further researches on the correlation among activity concentrations of different types of radioisotopes, spatial distribution of various radioisotopes in spent resin, on-line monitoring techniques for spent resin classification, and the classification and monitoring techniques for other solid wastes are suggested. (authors)