Comparison of the Chernobyl and Fukushima Nuclear Power Plants Accidents and their Consequences

This work compares the radioactive consequences due to the Chernobyl and Fukushima NPP accidents. Due to non-homogeneous features of the fallouts of radioactive isotopes in the both cases the comparison of radioactive contamination density was compared for similar administrative units – in Russia (Bryansk region, Novozibkov subregion) and in Japan (Fukushima prefecture, Namie municipality). We also estimated and compared both external and internal radiation doses for population during the acute accidental period – the first year. This work also considers the long-term dynamics of exposure doses in Russia which illustrate the Russian experience on countermeasures to protect the population.