Research on the reduction of environmental load

Maki, Takashi*; Asao, Takayuki*

Effects from the viewpoint of the reduction of environmental load have been evaluated in studies of the validity of the FBR fuel Cycle. As an index of environmental load, the dose rate, whish's caused by radionuclide migration from an underground repository to biosphere, is one of the most important items. For the evaluations of this dose rate, a simplified safety estimation method for the radioactive waste repository was developed. Furthermore, information related to index of environmental load was collected. And collected information was categorized and analyzed. Through this research, we got the following results. (1)A simplified safety estimation method for the radioactive waste repository that based on specified evaluation model and target nuclides was developed. Calculated results were compared to results of an existing safely estimation code, and were verified. (2)Though the most suitable item is varied with the goal and object of assessment, the most su㎜arized item that characterizes environmental load is "the volume of the waste".