Uncertainty Analysis of Kinetic Parameters for Design, Operation and Safety Analysis of SFRs


Uncertainty Analysis of Kinetic Parameters for Design, Operation and Safety Analysis of SFRs

Kodeli, I.-A.; Rimpault, G.; Dufay, P.; Peneliau, Y.; Tommasi, J.; Fridman, E.; Zwermann, W.; Aures, A.; Ivanov, E.; Nakahara, Y.; Ivanova, T.; Gulliford, J.

An OECD/NEA sub-group on Uncertainty Analysis in Best-Estimate Modelling (UAM) for Design, Operation and Safety Analysis of Sodium-cooled Fast Reactors (SFR-UAM) has been initiated in 2015 with the objective to study the uncertainties in different stages of Sodium Fast Reactors.
Best-estimate codes and data together with an evaluation of the uncertainties are required for that purpose, which challenges existing calculation methods. Neutronic status and reactivity feedback coefficients as well as the kinetic parameters are being calculated for transient analyses. Experimental evidence in support of the studies is also being developed.
The use of the Iterated Fission Probability method in the Monte Carlo codes such as Tripoli4® SERPENT-2 and MCNP-6 gives reference values for calculating βeff as well as Λeff and their uncertainties. Deterministic codes like ERANOS and PARTISN/SUSD3D are also used for nuclear data sensitivity analysis and uncertainty propagation. The computational approaches are tested using available integral experiments and the uncertainties of the measurements. A vast series of experiments has been selected and analysed leading to recommendations on the tools, procedures and data to be used for eff and/or transition functions calculating of the benchmarks including uncertainties.

Keywords: SFR; Beta-effective; Uncertainties

  • Contribution to proceedings
    International Conference on Fast Reactors and Related Fuel Cycles: Next Generation Nuclear Systems for Sustainable Development (FR17), 26.-29.06.2017, Yekaterinburg, Russian Federation
    Proceedings of the International Conference on Fast Reactors and Related Fuel Cycles

Permalink: https://www.hzdr.de/publications/Publ-25171
Publ.-Id: 25171