Abstract
Worker doses received from non-fixed surface contamination for transport of radioactive materials were evaluated for 356 nuclides in TECDOC-1449 published by the International Atomic Energy Agency (IAEA). In this study, a revised evaluation model for inhalation of worker was derived based on an investigation of actual conditions of transport of radioactive materials in Japan. Evaluation scenarios for the transport of a spent fuel cask and small manually handled packages were considered. Transportation workers for indoor, outdoor and in carrier task were classified in eight groups in these scenarios. Parameters of annual working time were defined for each classified work. The applicable surface contamination limits were calculated with the comparison to the current regulation and the surface contamination limits derived using TECDOC-1449. The results showed that critical pathway was inhalation for alpha emitter and a dominating worker group was a group of packages preparation and transfer workers and conve...
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