Nuclear data needs for decommissioning and design of nuclear facilities

Abstract
Design and decommissioning of large-scale nuclear facilities is nowadays a high-interest activity for the nuclear community. Nuclear data have an important role in R&D studies for accelerator-based applications and decommissioning of nuclear facilities including nuclear reactors. Most of these studies use simulations to predict activity levels and dose rates, to design shielding components, etc. The different data libraries and/or reaction models included in the transport codes are essential for these calculations. In this contribution we present several examples of the nuclear data usage for this type of applications. We show the importance of a correct use of nuclear data and reaction models for the accuracy of the results obtained by simulations.