Basic concept concerning the calculation of exposure dose to be compared with the objective dose around power generating LWR plants

The results of study on the basic concept in the calculation of the exposure dose around LWR (light water reactor) plants, submitted by Radiation Council to Director General of the Science and Technology Agency, are presented. Based on the intake routes through foods, the contents are concerned with the following matters: calculation of the whole-body exposure dose due to radioactive substances in both gaseous and liquid wastes; calculation of the thyroid-gland exposure dose due to radioiodine in both gaseous and liquid wastes; and application of the concept to other nuclear power facilities. (Mori, K.)