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European benchmark on the ASTRID-like low-void-effect core characterization: neutronic parameters and safety coefficients

Abstract : A benchmark analysis was launched within the Work Package on Core Safety of the EU FP7 cross-cutting project supporting the European Sustainable Industrial Initiative (ESNII), named ESNII+, aimed at providing a quantitative estimation of the uncertainties affecting the calculation of both core static neutronic parameters and safety coefficients of a Sodium-cooled Fast Reactor (SFR) low-void-effect core similar to the one considered for the Advanced Sodium Technological Reactor for Industrial Demonstration (ASTRID). Established deterministic and stochastic neutronic codes, as well as different nuclear data libraries, were employed by eight European organizations to perform a complete core characterization, with the ultimate goal to achieve consensus on computational methods and associated databases to be employed for advanced-design SFRs safety analyses. The comparison of the results obtained by the participating institutions provided quantitative information about capabilities and limitations of the different approaches, and about library effects, by highlighting the sensitivity of safety parameters to both computational techniques and nuclear data. Selected results of the first phase of the benchmark are presented and analyzed, along with a discussion of the planned R&D activities needed to improve the present benchmark status
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Submitted on : Wednesday, September 9, 2020 - 9:47:36 AM
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S. Borot, F. Alvarez-Velarde, E Fridman, I. Garcia Cruzado, N. Garcia Herranz, et al.. European benchmark on the ASTRID-like low-void-effect core characterization: neutronic parameters and safety coefficients. ICAPP 2015 - International Congress on Advances in Nuclear Power Plants, May 2015, Nice, France. ⟨cea-02875256⟩

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