[2I01-05] Fukushima Daiichi

[2I04] Estimation of plant condition of Fukushima Daiichi Nuclear Power Station

(1) Analysis of measured values of released radionuclide into atmosphere

*Masashi Himi¹, Naotoshi Tominaga¹, Yoko Yamane¹, Keigo Murata¹, Koichi Nakamura² (1. Advancesoft co., 2. CRIEPI)

Keywords:Fukushima Daiichi Nuclear Power Station, severe accident, FP behavior, analysis of radioactivity, estimation of plant condition

Due to the Great East Japan Earthquake that occurred on March 11, 2011, Fukushima Daiichi Nuclear Power Station Units 1 to 3 were considered to have experienced a severe accident accompanying core melting. Analytical work to grasp the situation of the accident is carried out simultaneously with the waste furnace work. We independently tried to estimate the state of core damage by analyzing the measurement values of radionuclides after the accident.