Abstract
The 20th year comes around from a Soviet Union nuclear plant accident in Chernobyl on April 26, 1986. How should we face nuclear disaster? It is the problem which has produced confusion in social recognition. However, it is the subject which should be tackled scientifically. Scientific recognitions to nuclear disaster should be the starting point as the new measure of peaceful use of nuclear technology in the 21st century. This report discusses the nuclear hazard of the greatest ever nuclear power plant accident produced based on nuclear disaster investigation so far in the world. Especially the comparison with nuclear explosion disaster is meaningful. It is because most public have misunderstanding as nuclear explosion arose in power plant. In the meaning, the air nuclear explosion of Hiroshima and the surface nuclear explosion in the Bikini Atoll are taken up, and the essential differences such as, kinds of explosion, dose level and the dose rate, and the healthy effects are discussed.
1 World Health Organization: Health Effects of Chernobyl Accidents and Special Health Care Programmes, 2006, ttp://www.who.int/ionizing_radiation/chernobyl/who_chernobyl_report_2006.pdf
2 Takada, J: Nuclear Hazards in the World, Kodansha and Springer, 2005.
