(vii) Assessments by international organizations

After the accident at Tokyo Electric Power Company (TEPCO)’s Fukushima Daiichi NPS, the World Health Organization (WHO) and the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) published reports on assessment of exposure doses due to the accident and on health effects of radiation exposure.

How did international organizations assess the effects of the accident at TEPCO’s Fukushima Daiichi NPS? Let’s take a look at the main conclusions by major international organizations.

The WHO Reports published in 2012 and 2013, along with the UNSCEAR 2013 Report, state that their assessments of exposure doses contain certain uncertainties due to uncertainties inherent to basic data. However, the UNSCEAR 2020/2021 Report shows conclusions with less uncertainties on many issues as a broader range of knowledge became available.

For more information about survey results, see pages 189 and 190 of Vol. 1, FY2022 edition (available in Japanese only).