Sensitivity studies for the exercise I-1 of the OECD/UAM benchmark

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Abstract

OECD/NEA has initiated an international Uncertainty Analysis in Modeling (UAM) benchmark focused on uncertainties in modeling of Light Water Reactor (LWR). The first step of uncertainty propagation is to perform sensitivity to the input data affected by the numerical errors and physical models. The objective of the present paper is to study the effect of the numerical discretization error and the manufacturing tolerances on fuel pin lattice integral parameters (multiplication factor and macroscopic cross-sections) through sensitivity calculations. The two-dimensional deterministic codes NEWT and HELIOS were selected for this work. The NEWT code was used for analysis of the TMI-1, PB-2, and Kozloduy-6 test cases; the TMI-1 test case was investigated using the HELIOS code. The work has been performed within the framework of UAM Exercise I-1 "Cell Physics." © 2012 E. Canuti et al.

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Canuti, E., Petruzzi, A., D’Auria, F., & Kozlowski, T. (2012). Sensitivity studies for the exercise I-1 of the OECD/UAM benchmark. Science and Technology of Nuclear Installations, 2012. https://doi.org/10.1155/2012/817185

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