Series Lecture “Concept of Dosimetric Quantities Used in Radiation Protection”

Third Lecture “Transition of Dose Quantities in Radiological Protection”

Abstract

The International Commission on Radiological Protection (ICRP) has recommended ‘protection quantities’, such as equivalent dose and effective dose. These quantities have been amended to give the dose limits for exposures of workers and the public. Many discussions have been continuously made on protection quantities and their meanings at the time when ICRP defined new protection quantities (e. g., effective dose replaced effective equivalent dose in ICRP 1990 Recommendations). In addition, ICRP just published new recommendations for radiological protection (ICRP 2007 Recommendations). This paper reviews historical transition of protection quantities, including the ICRP 2007 Recommendations.