Sensitivity and uncertainty analysis of PWR spent fuel observables to operational and model parameters

Pablo Romojaro; Klemen Ambrozic; Dusan Calic; Luca Fiorito; Kevin Govers; Augusto Hernandez Solis; Bor Kos; Peter Schillebeeckx; Alexey Stankovskiy; Gasper Zerovnik; Marjan Kromar

Sensitivity and uncertainty analysis of PWR spent fuel observables to operational and model parameters

Pablo Romojaro, Klemen Ambrozic, Dusan Calic, Luca Fiorito, Kevin Govers, Augusto Hernandez Solis, Bor Kos, Peter Schillebeeckx, Alexey Stankovskiy, Gasper Zerovnik, Marjan Kromar

Research output › peer-review

Abstract

Sensitivity and uncertainty analyses of spent nuclear fuel observables - decay heat, neutron and ..--rayray emission rate - to operational and model parameters have been performed. A 2D model representing a typical PWR 17 × 17 UO2 fuel assembly has been taken as reference. The Serpent code and ENDF/B-VII.1 evaluated nuclear data library have been used for the analyses. Relative uncertainty of decay heat, neutron and .-ray emission rates due to MC counting statistics, as well as the number of fuel pin radial regions required for an accurate characterization of SNF neutron emission, have been estimated. A parametric study has been carried out to investigate the impact of the homogenization to an average value of the fuel and moderator temperature, boron concentration power and burnup on the prediction of the selected observables. In addition, linear sensitivity coefficients have been calculated.

Original language	English
Title of host publication	Proceedings International Conference on Physics of Reactors 2022 (PHYSOR 2022)
Publisher	American Nuclear Society
Pages	1854-1863
Number of pages	10
State	Published - 23 Jun 2022
Event	2022 - PHYSOR - International Conference on Physics of Reactors: Making Virtual a Reality: Advancements in Reactor Physics to Leap Forward Reactor Operation and Deployment - Sheraton Pittsburgh Hotel, Pittsburgh, PA Duration: 15 May 2022 → 20 May 2022

Conference

Conference	2022 - PHYSOR - International Conference on Physics of Reactors
Country/Territory	United States
City	Pittsburgh, PA
Period	2022-05-15 → 2022-05-20

Access to Document

https://www.ans.org/pubs/proceedings/article-51165/License: Unspecified

Cite this

Romojaro, P., Ambrozic, K., Calic, D., Fiorito, L., Govers, K., Hernandez Solis, A., Kos, B., Schillebeeckx, P., Stankovskiy, A., Zerovnik, G., & Kromar, M. (2022). Sensitivity and uncertainty analysis of PWR spent fuel observables to operational and model parameters. In Proceedings International Conference on Physics of Reactors 2022 (PHYSOR 2022) (pp. 1854-1863). American Nuclear Society. https://www.ans.org/pubs/proceedings/article-51165/

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title = "Sensitivity and uncertainty analysis of PWR spent fuel observables to operational and model parameters",

abstract = "Sensitivity and uncertainty analyses of spent nuclear fuel observables - decay heat, neutron and ..--rayray emission rate - to operational and model parameters have been performed. A 2D model representing a typical PWR 17 × 17 UO2 fuel assembly has been taken as reference. The Serpent code and ENDF/B-VII.1 evaluated nuclear data library have been used for the analyses. Relative uncertainty of decay heat, neutron and .-ray emission rates due to MC counting statistics, as well as the number of fuel pin radial regions required for an accurate characterization of SNF neutron emission, have been estimated. A parametric study has been carried out to investigate the impact of the homogenization to an average value of the fuel and moderator temperature, boron concentration power and burnup on the prediction of the selected observables. In addition, linear sensitivity coefficients have been calculated.",

keywords = "Sensitivity, Uncertainty, Spent nuclear fuel",

author = "Pablo Romojaro and Klemen Ambrozic and Dusan Calic and Luca Fiorito and Kevin Govers and {Hernandez Solis}, Augusto and Bor Kos and Peter Schillebeeckx and Alexey Stankovskiy and Gasper Zerovnik and Marjan Kromar",

note = "Score=3; 2022 - PHYSOR - International Conference on Physics of Reactors : Making Virtual a Reality: Advancements in Reactor Physics to Leap Forward Reactor Operation and Deployment ; Conference date: 15-05-2022 Through 20-05-2022",

year = "2022",

month = jun,

day = "23",

language = "English",

pages = "1854--1863",

booktitle = "Proceedings International Conference on Physics of Reactors 2022 (PHYSOR 2022)",

publisher = "American Nuclear Society",

address = "United States",

}

Romojaro, P, Ambrozic, K, Calic, D, Fiorito, L, Govers, K, Hernandez Solis, A, Kos, B, Schillebeeckx, P, Stankovskiy, A, Zerovnik, G & Kromar, M 2022, Sensitivity and uncertainty analysis of PWR spent fuel observables to operational and model parameters. in Proceedings International Conference on Physics of Reactors 2022 (PHYSOR 2022). American Nuclear Society, pp. 1854-1863, 2022 - PHYSOR - International Conference on Physics of Reactors, Pittsburgh, PA, Pennsylvania, United States, 2022-05-15. <https://www.ans.org/pubs/proceedings/article-51165/>

TY - GEN

T1 - Sensitivity and uncertainty analysis of PWR spent fuel observables to operational and model parameters

AU - Romojaro, Pablo

AU - Ambrozic, Klemen

AU - Calic, Dusan

AU - Fiorito, Luca

AU - Govers, Kevin

AU - Hernandez Solis, Augusto

AU - Kos, Bor

AU - Schillebeeckx, Peter

AU - Stankovskiy, Alexey

AU - Zerovnik, Gasper

AU - Kromar, Marjan

N1 - Score=3

PY - 2022/6/23

Y1 - 2022/6/23

N2 - Sensitivity and uncertainty analyses of spent nuclear fuel observables - decay heat, neutron and ..--rayray emission rate - to operational and model parameters have been performed. A 2D model representing a typical PWR 17 × 17 UO2 fuel assembly has been taken as reference. The Serpent code and ENDF/B-VII.1 evaluated nuclear data library have been used for the analyses. Relative uncertainty of decay heat, neutron and .-ray emission rates due to MC counting statistics, as well as the number of fuel pin radial regions required for an accurate characterization of SNF neutron emission, have been estimated. A parametric study has been carried out to investigate the impact of the homogenization to an average value of the fuel and moderator temperature, boron concentration power and burnup on the prediction of the selected observables. In addition, linear sensitivity coefficients have been calculated.

AB - Sensitivity and uncertainty analyses of spent nuclear fuel observables - decay heat, neutron and ..--rayray emission rate - to operational and model parameters have been performed. A 2D model representing a typical PWR 17 × 17 UO2 fuel assembly has been taken as reference. The Serpent code and ENDF/B-VII.1 evaluated nuclear data library have been used for the analyses. Relative uncertainty of decay heat, neutron and .-ray emission rates due to MC counting statistics, as well as the number of fuel pin radial regions required for an accurate characterization of SNF neutron emission, have been estimated. A parametric study has been carried out to investigate the impact of the homogenization to an average value of the fuel and moderator temperature, boron concentration power and burnup on the prediction of the selected observables. In addition, linear sensitivity coefficients have been calculated.

KW - Sensitivity

KW - Uncertainty

KW - Spent nuclear fuel

UR - https://ecm.sckcen.be/OTCS/llisapi.dll/open/49744149

M3 - In-proceedings paper

SP - 1854

EP - 1863

BT - Proceedings International Conference on Physics of Reactors 2022 (PHYSOR 2022)

PB - American Nuclear Society

T2 - 2022 - PHYSOR - International Conference on Physics of Reactors

Y2 - 15 May 2022 through 20 May 2022

ER -