Neutronic Analysis of the European Sodium Fast Reactor: Part II—Burnup Results

Fridman, E.; Velarde, Francisco Alvarez; Otero, Pablo Romojaro; Tsige‐Tamirat, H.; Jiménez-Carrascosa, Antonio; Herranz, Nuria García; Bernard, Franck; Gregg, Robert; Davies, Una; Krepel, Jiri; Lindley, Ben; Massara, S.; Poumerouly, S.; Girardi, Enrico; Mikityuk, Konstantin

doi:10.1115/1.4048765

Cited by 5 publications

(12 citation statements)

References 3 publications

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“…4. The void trends follow a similar pattern to the core behaviour at BOEC [5,6] with one exception in Case 5 (Fig. 11a).…”

Section: Sodium Void Worthssupporting

confidence: 62%

“…Finally, the core is surrounded by four rings of bio-shielding. It should be noted that previous analysis in the project showed that the empty spent fuel positions have no effect on the core neutronics and thus can be neglected in the core analysis [5,6].…”

Section: Esfr Core Descriptionmentioning

confidence: 99%

“…The EOEC core was established at the end of three full in-core residence periods per batch (18 successive fuel cycles), with control rods at their parked position. This depletion calculation was performed in the previous ESFR-SMART project task [5,6], providing the detailed fuel compositions used for this work.…”

Section: Esfr Core Descriptionmentioning

confidence: 99%

“…The EOEC state was compared to the previous BOC state analysed by Fridman et al [5,6] by comparing a variety of parameters from the fresh core with the burnt core:…”

Section: Modelling Assumptionsmentioning

confidence: 99%

“…The neutronic characterisation of the ESFR core at its Beginning of Cycle (BOC) state was performed by Fridman et al [5,6] in the preceding project task. This work included an evaluation of safety-related neutronic parameters for the fresh core, as well as once-through and realistic batchwise burnup analysis aimed at establishing the equilibrium core loading pattern.…”

Section: Introductionmentioning

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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“…4. The void trends follow a similar pattern to the core behaviour at BOEC [5,6] with one exception in Case 5 (Fig. 11a).…”

Section: Sodium Void Worthssupporting

confidence: 62%

Section: Esfr Core Descriptionmentioning

confidence: 99%

Section: Esfr Core Descriptionmentioning

confidence: 99%

“…The EOEC state was compared to the previous BOC state analysed by Fridman et al [5,6] by comparing a variety of parameters from the fresh core with the burnt core:…”

Section: Modelling Assumptionsmentioning

confidence: 99%

Section: Introductionmentioning

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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Review of Euratom projects on design, safety assessment, R&D and licensing for ESNII/Gen-IV reactor systems

Mikityuk¹,

Ferreira

Hatala

et al. 2023

EPJ Nuclear Sci. Technol.

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Five Euratom projects launched since 2017 in support of the development of ESNII/Generation-IV reactor systems are briefly presented in the paper in terms of key objectives, results, and recommendations for the future. These projects focus on various aspects of the following ESNII/Generation-IV systems: Sodium Fast Reactor, Gas Cooled Fast Reactor, Supercritical Water Cooled Reactor, and Molten Salt Fast Reactor. The paper does not consider EU projects focused on the Gen-IV reactor technologies based on the use of heavy metals as a coolant because these projects are reviewed in a different paper.

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Decay Heat Characterization for the European Sodium Fast Reactor

Jiménez-Carrascosa

García-Herranz

Krepel

et al. 2021

Journal of Nuclear Engineering and Radiation Science

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In this work a detailed assessment of the decay heat power for the commercial-size European Sodium-cooled Fast Reactor (ESFR) at the end of its equilibrium cycle has been performed. The summation method has been used to compute very accurate spatial- and time-dependent decay heat by employing state-of-the-art coupled transport-depletion computational codes and nuclear data. This detailed map provides basic information for subsequent transient calculations of the ESFR. A comprehensive analysis of the decay heat has been carried out and interdependencies among decay heat and different parameters characterizing the core state prior to shutdown, such as discharge burnup or type of fuel material, have been identified. That analysis has served as a basis to develop analytic functions to reconstruct the spatial-dependent decay heat power for the ESFR for cooling times within the first day after shutdown.

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Neutronic Analysis of the European Sodium Fast Reactor: Part II—Burnup Results

Cited by 5 publications

References 3 publications

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

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

Review of Euratom projects on design, safety assessment, R&D and licensing for ESNII/Gen-IV reactor systems

Decay Heat Characterization for the European Sodium Fast Reactor

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