Development of full-core VVER-1000 model in deterministic code parcs: Validation of data preparation process on HZP calculations

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dc.contributor.authorLachout, Ondřej
dc.contributor.editorMašata, David
dc.date.accessioned2025-09-22T07:59:12Z
dc.date.available2025-09-22T07:59:12Z
dc.date.issued2025
dc.description.abstract-translatedThe accurate prediction of reactor core behavior under various operating conditions is fundamental for ensuring nuclear safety and eSective reactor operation. Deterministic reactor physics codes, such as PARCS (Purdue Advanced Reactor Core Simulator), oSer eSicient tools for full-core simulations. However, their accuracy is strongly influenced by the quality of the macroscopic nuclear data used as input. This study focuses on the development and validation of a full-core VVER-1000 model in PARCS, with emphasis on verifying the macroscopic data preparation process for Hot Zero Power (HZP) conditions. The macroscopic cross-section library was generated using the Monte Carlo code Serpent2, based on infinite lattice models of individual fuel assemblies. Data were parametrized with respect to key reactor state variables, including moderator and fuel temperature, coolant density, and boron concentration. Special attention was given to reflector modeling and the preparation of homogenized macroscopic data using a fullcore Serpent model at zero burnup. To evaluate model fidelity, the X2 Khmelnitsky benchmark— containing experimental HZP data—was employed. PARCS calculations were compared with both benchmark measurements and parallel full-core Serpent simulations. The results show strong agreement in key parameters, including critical boron concentration, control rod worth, power distribution, and moderator reactivity coeSicient. Notable discrepancies were observed only in the integral characteristics of one control rod bank, likely due to limitations in nodal treatment of control rods in PARCS. The study demonstrates the reliability of the macroscopic data preparation procedure and supports the validity of the deterministic PARCS model under HZP conditions. Future work will extend this approach to Hot Full Power states and evaluate the influence of various data preparation strategies on reactor simulation accuracy.en
dc.format2 s.cs
dc.identifier.isbn978-80-261-1307-2
dc.identifier.isbn978-80-261-1308-9 (printed)
dc.identifier.urihttp://hdl.handle.net/11025/62812
dc.language.isoenen
dc.publisherUniversity of West Bohemia in Pilsenen
dc.rights© University of West Bohemia in Pilsenen
dc.rights.accessopenAccessen
dc.subjectpostercs
dc.subject.translatedposteren
dc.titleDevelopment of full-core VVER-1000 model in deterministic code parcs: Validation of data preparation process on HZP calculationsen
dc.typekonferenční příspěvekcs
dc.typeconferenceObjecten
dc.type.statusPeer revieweden
local.files.count2*
local.files.size1668011*
local.has.filesyes*

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