A methodology for performing sensitivity analysis in dynamic fuel cycle simulation studies applied to a PWR fleet simulated with the CLASS tool
Fuel cycle simulators are used worldwide to provide scientific assessment to fuel cycle future strategies. Those tools help understanding the fuel cycle physics and determining the most impacting drivers at the cycle scale. A standard scenario calculation is usually based on a set of operational ass...
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doaj-589bc1b5939e4664b47e2326eaafc9e22021-04-02T13:10:59ZengEDP SciencesEPJ Nuclear Sciences & Technologies2491-92922018-01-0141310.1051/epjn/2018009epjn170042A methodology for performing sensitivity analysis in dynamic fuel cycle simulation studies applied to a PWR fleet simulated with the CLASS toolThiollière Nicolas0Clavel Jean-Baptiste1Courtin Fanny2Doligez Xavier3Ernoult Marc4Issoufou Zakari5Krivtchik Guillaume6Leniau Baptiste7Mouginot Baptiste8Bidaud Adrien9David Sylvain10Lebrin Victor11Perigois Carole12Richet Yann13Somaini Alice14Subatech, IMTA-IN2P3/CNRS-UniversitéIRSN/PSN-EXP/SNC/LNCSubatech, IMTA-IN2P3/CNRS-UniversitéInstitut de Physique Nucléaire d’Orsay, CNRS-IN2P3/Univ. Paris-SudInstitut de Physique Nucléaire d’Orsay, CNRS-IN2P3/Univ. Paris-SudInstitut de Physique Nucléaire d’Orsay, CNRS-IN2P3/Univ. Paris-SudCEA, DEN, Cadarache, DER, SPRC/LECYSubatech, IMTA-IN2P3/CNRS-UniversitéUniv. of Wisconsin Madison, Department of Nuclear Engineering and Engineering PhysicsLaboratoire de Physique Subatomique et de Cosmologie, Université Grenoble-Alpes, CNRS/IN2P3Institut de Physique Nucléaire d’Orsay, CNRS-IN2P3/Univ. Paris-SudSubatech, IMTA-IN2P3/CNRS-UniversitéSubatech, IMTA-IN2P3/CNRS-UniversitéIRSN/PSN-EXP/SNC/LNCInstitut de Physique Nucléaire d’Orsay, CNRS-IN2P3/Univ. Paris-SudFuel cycle simulators are used worldwide to provide scientific assessment to fuel cycle future strategies. Those tools help understanding the fuel cycle physics and determining the most impacting drivers at the cycle scale. A standard scenario calculation is usually based on a set of operational assumptions, such as reactor Burn-Up, deployment history, cooling time, etc. Scenario output is then the evolution of isotopes mass in the facilities that composes the nuclear fleet. The increase of computing capacities and the use of neutron data fast predictors provide new opportunities in nuclear scenario studies. Indeed, a very high number of calculations is possible, which allows testing a high number of operational assumptions combinations. The global sensitivity analysis (GSA) formalism is specifically well adapted for this kind of problem. In this new framework, a scenario study is based on the sampling of operational data, which become input variables. A first result of a scenario study is the highlight of relations between operational input data and outputs. Input variable subspace that satisfy optimization criteria on an output, such as plutonium incineration or stabilization, can also be determined. In this paper, a focus is made on the methodology based on GSA. This innovative methodology is presented and applied to a simple fleet simulation composed of a PWR-UOx fuel and a PWR-MOx fuel. Calculations are done with the fuel cycle simulator CLASS developed by the CNRS/IN2P3 in collaboration with IRSN. The design of experiment is built from five fuel cycle input sampled variables. Sensitivity indices have been calculated on plutonium and minor actinide (MA) production. It shows that the PWR-UOx Burn-Up and the fraction of PWR-MOx fuel are the most important input variables that explain the plutonium production. For the MA production, main drivers depend strongly on isotopes. Sensitivity analysis also reveals input variable subspace responsible of simulation crash, what led to an important improvement of the model algorithms. An equilibrium condition on the plutonium mass in the stockpile used for building MOx fuel has been applied. The solution is represented as a subspace in the PWR-UOx Burn-Up and PWR-MOx fraction input space. For instance, achieving a plutonium equilibrium in a stockpile fed by a PWR-UOx that operates at 40 GWd/t requires a PWR-MOx fraction between 9 and 14%. This study also provides data related to plutonium incineration induced by the utilization of the MOx.https://www.epj-n.org/articles/epjn/full_html/2018/01/epjn170042/epjn170042.html |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Thiollière Nicolas Clavel Jean-Baptiste Courtin Fanny Doligez Xavier Ernoult Marc Issoufou Zakari Krivtchik Guillaume Leniau Baptiste Mouginot Baptiste Bidaud Adrien David Sylvain Lebrin Victor Perigois Carole Richet Yann Somaini Alice |
spellingShingle |
Thiollière Nicolas Clavel Jean-Baptiste Courtin Fanny Doligez Xavier Ernoult Marc Issoufou Zakari Krivtchik Guillaume Leniau Baptiste Mouginot Baptiste Bidaud Adrien David Sylvain Lebrin Victor Perigois Carole Richet Yann Somaini Alice A methodology for performing sensitivity analysis in dynamic fuel cycle simulation studies applied to a PWR fleet simulated with the CLASS tool EPJ Nuclear Sciences & Technologies |
author_facet |
Thiollière Nicolas Clavel Jean-Baptiste Courtin Fanny Doligez Xavier Ernoult Marc Issoufou Zakari Krivtchik Guillaume Leniau Baptiste Mouginot Baptiste Bidaud Adrien David Sylvain Lebrin Victor Perigois Carole Richet Yann Somaini Alice |
author_sort |
Thiollière Nicolas |
title |
A methodology for performing sensitivity analysis in dynamic fuel cycle simulation studies applied to a PWR fleet simulated with the CLASS tool |
title_short |
A methodology for performing sensitivity analysis in dynamic fuel cycle simulation studies applied to a PWR fleet simulated with the CLASS tool |
title_full |
A methodology for performing sensitivity analysis in dynamic fuel cycle simulation studies applied to a PWR fleet simulated with the CLASS tool |
title_fullStr |
A methodology for performing sensitivity analysis in dynamic fuel cycle simulation studies applied to a PWR fleet simulated with the CLASS tool |
title_full_unstemmed |
A methodology for performing sensitivity analysis in dynamic fuel cycle simulation studies applied to a PWR fleet simulated with the CLASS tool |
title_sort |
methodology for performing sensitivity analysis in dynamic fuel cycle simulation studies applied to a pwr fleet simulated with the class tool |
publisher |
EDP Sciences |
series |
EPJ Nuclear Sciences & Technologies |
issn |
2491-9292 |
publishDate |
2018-01-01 |
description |
Fuel cycle simulators are used worldwide to provide scientific assessment to fuel cycle future strategies. Those tools help understanding the fuel cycle physics and determining the most impacting drivers at the cycle scale. A standard scenario calculation is usually based on a set of operational assumptions, such as reactor Burn-Up, deployment history, cooling time, etc. Scenario output is then the evolution of isotopes mass in the facilities that composes the nuclear fleet. The increase of computing capacities and the use of neutron data fast predictors provide new opportunities in nuclear scenario studies. Indeed, a very high number of calculations is possible, which allows testing a high number of operational assumptions combinations. The global sensitivity analysis (GSA) formalism is specifically well adapted for this kind of problem. In this new framework, a scenario study is based on the sampling of operational data, which become input variables. A first result of a scenario study is the highlight of relations between operational input data and outputs. Input variable subspace that satisfy optimization criteria on an output, such as plutonium incineration or stabilization, can also be determined. In this paper, a focus is made on the methodology based on GSA. This innovative methodology is presented and applied to a simple fleet simulation composed of a PWR-UOx fuel and a PWR-MOx fuel. Calculations are done with the fuel cycle simulator CLASS developed by the CNRS/IN2P3 in collaboration with IRSN. The design of experiment is built from five fuel cycle input sampled variables. Sensitivity indices have been calculated on plutonium and minor actinide (MA) production. It shows that the PWR-UOx Burn-Up and the fraction of PWR-MOx fuel are the most important input variables that explain the plutonium production. For the MA production, main drivers depend strongly on isotopes. Sensitivity analysis also reveals input variable subspace responsible of simulation crash, what led to an important improvement of the model algorithms. An equilibrium condition on the plutonium mass in the stockpile used for building MOx fuel has been applied. The solution is represented as a subspace in the PWR-UOx Burn-Up and PWR-MOx fraction input space. For instance, achieving a plutonium equilibrium in a stockpile fed by a PWR-UOx that operates at 40 GWd/t requires a PWR-MOx fraction between 9 and 14%. This study also provides data related to plutonium incineration induced by the utilization of the MOx. |
url |
https://www.epj-n.org/articles/epjn/full_html/2018/01/epjn170042/epjn170042.html |
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