Analysis of a small PWR core with the PARCS/Helios and PARCS/Serpent code systems

•The consistency between Helios and Serpent few-group cross sections is shown.•The PARCS model is validated against a Monte Carlo 3D model.•The fission and capture rates are compared.•The influence of the spacer grids on the axial power distribution is shown. Lattice physics codes are primarily used...

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Bibliographic Details
Published in:Annals of nuclear energy 2017-09, Vol.107, p.42-48
Main Authors: Baiocco, G., Petruzzi, A., Bznuni, S., Kozlowski, T.
Format: Article
Language:English
Subjects:
3D core analysis
Few-group cross section generation
Lattice Physics
Monte Carlo
Spacer grids
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Summary:•The consistency between Helios and Serpent few-group cross sections is shown.•The PARCS model is validated against a Monte Carlo 3D model.•The fission and capture rates are compared.•The influence of the spacer grids on the axial power distribution is shown. Lattice physics codes are primarily used to generate cross-section data for nodal codes. In this work the methodology of homogenized constant generation was applied to a small Pressurized Water Reactor (PWR) core, using the deterministic code Helios and the Monte Carlo code Serpent. Subsequently, a 3D analysis of the PWR core was performed with the nodal diffusion code PARCS using the two-group cross section data sets generated by Helios and Serpent. Moreover, a full 3D model of the PWR core was developed using Serpent in order to obtain a reference solution. Several parameters, such as keff, axial and radial power, fission and capture rates were compared and found to be in good agreement.
ISSN:0306-4549
1873-2100
DOI:10.1016/j.anucene.2017.04.008