Decay Heat Characterization for the European Sodium Fast Reactor

Jiménez-Carrascosa, Antonio; García-Herranz, Nuria; Krepel, Jiri; Margulis, Marat; Baker, Una; Shwageraus, Eugene; Fridman, E.; Gregg, Robert

doi:10.1115/1.4051798

Cited by 4 publications

(3 citation statements)

References 19 publications

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“…These more detailed maps of the main safety-relevant parameters will serve as basis for the transient calculations planned for the next stage of the work on the ESFR. Further work on sensitivity and uncertainty analysis, as well as an investigation into the decay heat maps at EOEC, has been performed and is reported in [1,2].…”

Section: Discussionmentioning

confidence: 99%

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Evaluation of the ESFR End of Equilibrium Cycle State: Spatial Distributions of Reactivity Coefficients

Baker

Margulis

Shwageraus

et al. 2021

Journal of Nuclear Engineering and Radiation Science

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The Horizon 2020 ESFR-SMART project investigates the behaviour of the commercial-size European Sodium-cooled Fast Reactor (ESFR) throughout its lifetime. This paper reports work focused on the End of Equilibrium Cycle (EOEC) loading of the ESFR, including neutronic analysis, core- and zone-wise reactivity coefficients, and more detailed local mapping of important safety-relevant parameters. Sensitivity and uncertainty analysis on these parameters have also been performed and a detailed investigation into decay heat mapping carried out. Due to the scope of this work the results have been split into three papers. The nominal operating conditions and both zone-wise and local mapping of reactivity coefficients are considered in this paper; the sensitivity and uncertainty analysis are detailed in Margulis et al. [1]; and the decay heat mapping calculations are reported in Jimenez-Carrascosa et al. [2]. The work was performed across four institutions using both continuous-energy Monte Carlo and deterministic reactor physics codes. A good agreement is observed between the methods, verifying the suitability of these codes for simulation of large, complicated reactor configurations; and giving confidence in the results for the most limiting ESFR EOEC core state for safety analysis. The results from this work will serve as basis for the transient calculations planned for the next stage of work on the ESFR, allowing for more in-depth studies to be performed on the multiphysics behaviour of the reactor.

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Section: Discussionmentioning

confidence: 99%

“…Following this, uncertainty and sensitivity analyses were carried out and an analysis of spatial distributions of decay heat. These additional investigations are detailed separately [1,2].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the ESFR End of Equilibrium Cycle State: Spatial Distributions of Reactivity Coefficients

Baker

Margulis

Shwageraus

et al. 2021

Journal of Nuclear Engineering and Radiation Science

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“…The definition of the energy limits is based on physical considerations with broad energy bands that cover the region the entire neutron spectrum. An example of specific application is the ESFR system [10] where the sensitivity profiles for the 239 Pu reactions in the 7-energy groups are shown in Figure 2. This SG46/TAR exercise is also useful to test different optimization methodologies compared with the "traditional" methodology used in WPEC/SG26.…”

Section: Specifications Sg46 -Tar Exercisementioning

confidence: 99%

WPEC/SG46 Exercise on Target Accuracy Requirement

Cabellos,

Hursin,

Palmiotti

2023

EPJ Web of Conf.

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Recently, a second Target Accuracy Requirements (TAR) exercise is launched in the framework of the WPEC/S46 on “Efficient and Effective Use of Integral Experiments for Nuclear Data Validation”. The TAR exercise aims at quantifying nuclear data needs, in terms of uncertainty reduction, to meet target accuracies on specific integral parameters. These target accuracies are driven by reactor and fuel cycle design. The goal is to provide the NEA/HPRL with new requirements of “nuclear data uncertainty reduction”

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