Incorporating sensitivity and uncertainty analysis to a lattice physics code with application to CASMO-4

Maria Pusa

Research output: Contribution to journalArticleScientificpeer-review

32 Citations (Scopus)

Abstract

This paper describes the implementation of classical perturbation theory based sensitivity and uncertainty analysis to the reactor physics code CASMO-4 in the context of the UAM (Uncertainty Analysis in Best-Estimate Modelling for Design, Operation and Safety Analysis of LWRS) benchmark. The theoretical background as well as practical guidelines for similar work are reviewed and the developed methodology is described in detail. A technique is proposed for handling a discrepancy between the code and covariance libraries regarding the amount of reactions present in the cross-section model. Numerical results for PWR and GEN-III MOX pin-cell test problems are presented and compared to TSUNAMI-1D. The results are in accordance with theoretical considerations and reflect the characteristics of the developed methodology.
Original languageEnglish
Pages (from-to)153-162
JournalAnnals of Nuclear Energy
Volume40
Issue number1
DOIs
Publication statusPublished - 2012
MoE publication typeA1 Journal article-refereed

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Uncertainty analysis
Sensitivity analysis
Physics

Keywords

  • Sensitivity analysis
  • uncertainly analysis
  • perturbation theory

Cite this

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abstract = "This paper describes the implementation of classical perturbation theory based sensitivity and uncertainty analysis to the reactor physics code CASMO-4 in the context of the UAM (Uncertainty Analysis in Best-Estimate Modelling for Design, Operation and Safety Analysis of LWRS) benchmark. The theoretical background as well as practical guidelines for similar work are reviewed and the developed methodology is described in detail. A technique is proposed for handling a discrepancy between the code and covariance libraries regarding the amount of reactions present in the cross-section model. Numerical results for PWR and GEN-III MOX pin-cell test problems are presented and compared to TSUNAMI-1D. The results are in accordance with theoretical considerations and reflect the characteristics of the developed methodology.",
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Incorporating sensitivity and uncertainty analysis to a lattice physics code with application to CASMO-4. / Pusa, Maria.

In: Annals of Nuclear Energy, Vol. 40, No. 1, 2012, p. 153-162.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Incorporating sensitivity and uncertainty analysis to a lattice physics code with application to CASMO-4

AU - Pusa, Maria

PY - 2012

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AB - This paper describes the implementation of classical perturbation theory based sensitivity and uncertainty analysis to the reactor physics code CASMO-4 in the context of the UAM (Uncertainty Analysis in Best-Estimate Modelling for Design, Operation and Safety Analysis of LWRS) benchmark. The theoretical background as well as practical guidelines for similar work are reviewed and the developed methodology is described in detail. A technique is proposed for handling a discrepancy between the code and covariance libraries regarding the amount of reactions present in the cross-section model. Numerical results for PWR and GEN-III MOX pin-cell test problems are presented and compared to TSUNAMI-1D. The results are in accordance with theoretical considerations and reflect the characteristics of the developed methodology.

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KW - uncertainly analysis

KW - perturbation theory

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