Evaluation of Doppler reactivity effect in MOX fueled LWR using FCA. 1; Scope of experiments and results in a uranium fueled core

Ando, Masaki  ; Fukushima, Masahiro   ; Okajima, Shigeaki  ; Yamamoto, Toru*; Ando, Yoshihira*

Evaluation of the Doppler reactivity effect of MOX fueled LWR is planned and being carried out using FCA. In this presentation, the scope of the plan is introduced, and the results of the first experiment using uranium samples in a uranium fueled core and the analysis is reported. The result of the analysis using the JENDL-3.3 library and FCA's code system showed good agreement with the measured values.