Uncertainty quantification of BWR criticality safety simulations

Majdi I. Radaideh, Dean Price, Tomasz Kozlowski

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

BWR lattice structure and operating conditions are more complicated than their PWR counterparts. Accurate burnup credit and criticality safety analysis requires rigorous modeling of BWR lattice during depletion calculations to provide precise burnup credit estimates. Consequently, this works aims to perform advanced criticality safety and depletion calculations by avoiding major assumptions that were used in previous studies and include uncertainty calculations. In this work, heterogeneous U-235 enrichment distribution throughout the lattice and accurate gadolinium rod modeling was considered, instead of uniform (average) enrichment. A control blade was inserted during depletion to quantify its effect on the burnup credit. Different depletion cases were compared to the simplified 2D depletion case and conclusions were drawn. Criticality safety analysis was conducted by estimating the effect of these depletion conditions on the criticality of GBC-68 spent fuel cask to ensure that the cask remain subcritical by a sufficient margin.

Original languageEnglish (US)
Title of host publicationInternational Conference on Physics of Reactors, PHYSOR 2018
Subtitle of host publicationReactor Physics Paving the Way Towards More Efficient Systems
PublisherSociedad Nuclear Mexicana, A.C.
Pages2866-2877
Number of pages12
ISBN (Electronic)9781713808510
StatePublished - 2018
Externally publishedYes
Event2018 International Conference on Physics of Reactors: Reactor Physics Paving the Way Towards More Efficient Systems, PHYSOR 2018 - Cancun, Mexico
Duration: Apr 22 2018Apr 26 2018

Publication series

NameInternational Conference on Physics of Reactors, PHYSOR 2018: Reactor Physics Paving the Way Towards More Efficient Systems
VolumePart F168384-5

Conference

Conference2018 International Conference on Physics of Reactors: Reactor Physics Paving the Way Towards More Efficient Systems, PHYSOR 2018
Country/TerritoryMexico
CityCancun
Period4/22/184/26/18

Keywords

  • BWR
  • Criticality safety
  • Scale
  • Uncertainty quantification

ASJC Scopus subject areas

  • Nuclear Energy and Engineering
  • Nuclear and High Energy Physics
  • Radiation
  • Safety, Risk, Reliability and Quality

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