Development of inventory evaluation methods for the radioactive wastes of Fukushima Daiichi Nuclear Power Station, 13; Introduction of stochastic approach to the modelling estimation method

Sugiyama, Daisuke*; Koma, Yoshikazu  ; Takahatake, Yoko  ; Aoki, Yoshio*; Nakabayashi, Ryo*; Fujita, Tomonari*

The introduction of a stochastic approach to the calibration of the radionuclide transport parameters, which processes the frequency distribution of the analytical measured data accumulated progressively on the wastes and contaminated water, into the modelling estimation method of the radioactive waste inventory generated at the Fukushima Daiichi Nuclear Power Station is investigated. It is expected that the accuracy of the modelling estimation of radionuclide composition in wastes will be improved by describing the radionuclide transport parameters as a lognormal distribution.