2020 Fall Meeting

Presentation information

Oral presentation

VII. Health Physics and Environmental Science » Health Physics and Environmental Science

[1A01-03] Radiation Effect

Wed. Sep 16, 2020 10:00 AM - 11:00 AM Room A (Zoom room 1)

Chair:Hiroko Yoshida(Tohoku Univ.)

10:30 AM - 10:45 AM

[1A03] Indication of radiation exposure 100mSv

*Masayoshi Kawai1 (1. KEK)

Keywords:Radiation exposure, 100 mSv, Cancer mortality rate, ICRP, DNA defect, DNA repare, Nuclear Power Plant Accident, Stochastic effect

The ICRP has recommended that residential evacuation should be determined in accidents involving radiation exposure in the range of 20 to 100 mSv per year. Radiation effect at 100mSv can be described as follows: (1) there is no deterministic effect at 100 mSv that is the upper limit of low-dose exposure giving stochastic effects, (2) morarity of carcinogenesis by 100 mSv exposure was evaluated to be 0.5% by ICRP, but (3) the effect of long exposure of 100 mSv/y is evaluated to be 0.025% considering human carcinogenesis suppressing functions containing DNA repair. Its risk factor is one-tenth of traffic accident deaths.