\chapter{Nuclear data uncertainty}\label{sec_NDuncertainties}
This section covers the uncertainty analysis carried out on the nuclide vector and derived quantities such as the decay heat. The output uncertainty is determined by the uncertainties of modeling parameters as well as input data. Particular attention is paid on the uncertainty coming from nuclear data that has been proven to be one of the main contributors in many applications. In this work uncertainty coming from nuclear data is estimated by means of statistical sampling techniques.\\
Neutronic cross section data contained in JEFF-3.3, ENDF/B-VIII.0 and JENDL-4.0u nuclear data libraries and neutron fission product yields coming from JEFF-3.3 are propagated in separate runs following the methodology briefly described in Sect. \ref{stSMPS}. 
\input{content/chapters/Nuclear data uncertainty/sections/Uncertainty of nuclide vector}
\input{content/chapters/Nuclear data uncertainty/sections/Uncertainty on decay heat}

