The radioactive substance pollution of Fukushima Prefecture due to Fukushima Daiichi nuclear power plant accident

−The actual condition of the pollution seen from the inhabitant of the polluted area−

Shigeki CHIBA (Ono-Hirata High School, Fukushima Prefecture)

Abstract

Fig. 1 The contamination of the radiation material Fukushima Daiichi accident–Hayakawa (2013) is used. *click to expand »black-and-white diagram

The huge earthquake (M 9.0) occurred in the Pacific coast of northeast Japan at 14:46 on March 11, 2011. Immediately afterwards, the Fukushima Daiichi nuclear plant was destroyed: Hydrogen explosions occurred in the buildings of the Nos. 1, 3 and 4 reactors, and fire broke out the building of the No. 4 reactor. By the destruction of the nuclear power plant, the large amounts of radioactive substance were scattered in the atmosphere and Ocean. As a result, the ground in Fukushima Prefecture was heavily polluted with radioactive material (Fig. 1).
The author Chiba carefully measured the radiation dose on the land surface at the several areas in Fukushima Prefecture. Chiba intensively surveyed the occurrence of radioactive contamination soil and Chiba took notice the black material showing extraordinarily high radiation.