Dose coefficients for occupational exposure

Manabe, Kentaro   

The dose coefficients, which are committed effective doses per unit intake of radionuclides, used for assessment of internal exposure doses. The current coefficients used in statutory procedure are based on the 1990 Recommendations of the International Commission on Radiological Protection (ICRP). On the other hand, the ICRP has been developing and providing dose coefficients based on the 2007 Recommendations, which supersedes the 1990 Recommendations. The development of dose coefficients for occupational intakes has been completed in April 2022. In this presentation, the models and data used in the development of the new coefficients will be explained and the differences between the old and new ones will be introduced.