Dose Evaluation by the Q system for LLW Bitumen Packages in Fire Environment

Large amounts of waste classified as \"combustible solids\" such as asphalt packages and plastic packages. are included in the waste generated by nuclear power plants and reprocessing plants throughout the world. Th'erefore. it is necessary to confirm transportation safety standards. especially fire situations encountered during sea and land transport. by evaluating beforehand the following items. (1) What is the nature of the burning? (2) How much of the contained nuclide is discharged? (3) What is the exposure dose imposed on the general public and workers? This evaluation discusses the appropriateness of the Q system concept and the radioactive limiting value during transportation. which calculates the exposure dose to the general public and workers by using the \"Q system\" (IAEA Safety Series No.7, 1985) shown in the IAEA Transport Regulations. Calculations are based on data related to nuclide discharge rate obtained from thermal tests of asphalt packages contained in 200£drums. (watabe et all 1992) as performed at the Central Research Institute of the Electric Power Industry.