[2F13-18] Uncertainty Evaluation

[2F16] Impacts of fuel composition dependence and uncertainty of fission neutron spectra on activation of reactor structural materials

*Hiroki JOJIMA¹, Ken-ichi TANAKA^2,1, Satoshi CHIBA¹ (1. Tokyo Institute of Technology, 2. The Institute of Applied Energy)

Keywords:uncertainty quantification, fission neutron spectrum, activation products

We calculated fission neutron spectrum(FNS) that takes into account changes due to fuel composition, and investigated impacts of the spectrum change on activation of reactor structural materials. We also calculated uncertainty of activation products by propagating that of FNS, and studied dependence of the uncertainty on distance from neutron sources and fuel composition.