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Qualification of the APOLLO2 lattice physics code of the NURISP platform for VVER hexagonal lattices by G. Hegyi; A. Keresztúri; A. Tóta is a Engineering article available to read on EtoBox.

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## Qualification of the APOLLO2 lattice physics code of the NURISP platform for VVER hexagonal lattices The experiments performed at the ZR-6 zero power critical reactor by the Temporary International Collective (TIC) and a burnup benchmark specified for depletion calculation of a VVER-440 assembly containing Gd burnable poison were used to qualify the APOLLO2.8-3.E (APOLLO2) code as a part of its ongoing validation activity. The work is part of the NURISP project, where KFKI AEKI undertook to develop and qualify some calculation schemes for hexagonal problems. Concerning the ZR-6 measurements, single cell, macro-cell and 2D calculations of selected regular and perturbed experiments are used for the validation. In the 2D cases, the radial leakage is also taken into account by the axial leakage represented by the measured axial buckling. Criticality parameter and reaction rate comparisons are presented. Although various sets of the experiments have been selected for the validation, good agreement of the measured and calculated parameters could be found by using the various options offered by APOLLO2. An additional mathematical benchmark -presented in the paper -also attests for the

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Author

G. Hegyi; A. Keresztúri; A. Tóta

Publisher

Walter de Gruyter GmbH

Published

2012

Language

EN

Field

Engineering (Physical Sciences)