As nuclear power plants are increasingly being restarted, it is extremely important for Japan to develop an emergency monitoring system that reflects the lessons learned from the accident at the TEPCO Fukushima Daiichi Nuclear Power Station. Although much research and development has been carried out in the world, how and by whom the new emergency monitoring system will be operated is not yet fully developed. In particular, based on the lessons learned from the Fukushima nuclear accident, there is a need to develop a screening system for evaluation of radiation dose from radioactive iodine in the thyroid glands of children and pregnant women. This paper reviewed the reports on emergency monitoring of the ICRP, ICRU and IAEA, and summarizes their main points. In addition, a questionnaire survey on emergency monitoring was conducted among organizations with which the authors have personal connections, the results were shown in the Appendix. This paper summarized the results of the two years of committee's activities from 2020 and the results of a further year. It also described relevant ICRP reports and reports on the concept of radiation protection in emergency situation, monitoring and the development of a radiation protection culture in the community. Furthermore, ICRU reports on radiation monitoring in emergency exposure situation, data required for radiation assessment, monitoring programs, individual monitoring programs and evaluation of organizational responses were reviewed.
