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Report No.

Status of discussion in ICRU on operational quantities for radiation protection

Endo, Akira   

The International Commission on Radiation Units and Measurements (ICRU) defines a set of operational quantities for use in radiation measurements that provides assessment of the protection quantities recommended by International Commission for Radiological Protection (ICRP). The ICRU operational quantities in current use was defined in 1980s. ICRU Report Committee 26 has examined the rationale for operational quantities taking into account the changes in the definitions of the protection quantities and the changes in the fields of application of the operational quantities. The considerations have included the range of types and energies of particles contributing to doses to workers and members of the public. Based on the analysis, the committee has proposed a set of operational quantities which differs from the previous quantities. This presentation describes an overview of ICRU Report Committee 26's discussion on the definitions, deficiencies, and limitations of the current system, and its proposals for an alternative system of operational quantities.



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