Overview of the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident, with amounts and isotopic compositions of the released radionuclides

摘要

Huge amounts of radionuclides were released into the atmosphere and ocean from the Fukushima Dai-ichi Nuclear Power Plant (FDNPP), operated by the Tokyo Electric Power Company, as a result of the reactor accident after the magnitude 9.0 Great East Japan Earthquake and subsequent gigantic tsunami on March 11, 2011. Here, a brief overview of the FDNPP accident was made, together with the total amounts of released radionuclides, mainly Cs-137, I-131, Sr-90 and transuranic nuclides (Pu-238,Pu-239,Pu-240, Am-241 and Cm-242,Cm-243,Cm-244).