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Atomic level insight into irradiation effects in nuclear fuel materials
Related publications (111)
Monte Carlo analysis of BWR geometries using a cycle check-up methodology
Mathieu Hursin, Hakim Ferroukhi, Dimitri Rochman, Abdelhamid Dokhane, Alexander Vasiliev
Recent fuel anomalies at a Swiss power plant have motivated the development at PSI of the "Cycle Check-Up" (CHUP) methodology which consists in performing Monte Carlo transport calculations using nuclide compositions and thermal-hydraulic boundary conditio ...
Oxford2023Extension of the OFFBEAT fuel performance code to finite strains and validation against LOCA experiments
Andreas Pautz, Carlo Fiorina, Alessandro Scolaro, Edoardo Luciano Brunetto
The mechanical analysis of nuclear fuel behavior under base-irradiation conditions has traditionally been performed adopting the small-strain approximation. However, many cases of interest for fuel behavior involve the occurrence of large rod deformations ...
ELSEVIER SCIENCE SA2023Data-Driven Predictive Models: Calculational Bias in Characterization of Spent Nuclear Fuel
Characteristics of the spent nuclear fuel (SNF) are typically calculated, requiring validation a priori. The validation process relies on the difference between calculations and measurements, namely the bias. Usually, predicting the bias based on benchmark ...
EPFL2022Delayed Hydride Cracking in Irradiated and Unirradiated Zircaloy-2 Cladding
Zirconium alloys used in the nuclear industry are exposed to extreme conditions undergoing high levels of irradiation damage and corrosion. Zircaloy-2 is used as nuclear fuel cladding in boiling water reactors and for the encapsulation of the spallation ta ...
EPFL2022Validation of spent nuclear fuel decay heat calculations using Polaris, ORIGEN and CASMO5
Andreas Pautz, Dimitri Rochman, Stefano Caruso
Decay heat calculations of spent nuclear fuel (SNF) using Polaris and ORIGEN codes in the SCALE code sys-tem, and CASMO5 code, are validated using measurements from the Clab and GE-Morris facilities. Multiple hypothesis testing, relying on permutations and ...
PERGAMON-ELSEVIER SCIENCE LTD2022Structural performance and mechanical properties investigation of spent nuclear fuel rods under static and dynamic bending loads
Currently, most Spent Nuclear Fuel (SNF) is kept safely in storage either at on-site facilities or at centralized interim storage sites. Moreover, many countries face delays in implementing their waste management programmes for SNF and high-level waste dis ...
EPFL2021Optimisation of used nuclear fuel canister loading using a neural network and genetic algorithm
Andreas Pautz, Hakim Ferroukhi, Dimitri Rochman, Alexander Vasiliev
This paper presents an approach for the optimisation of geological disposal canister loadings, combining high resolution simulations of used nuclear fuel characteristics with an articial neural network and a genetic algorithm. The used nuclear fuels (produ ...
SPRINGER LONDON LTD2021Uncertainty analyses of spent nuclear fuel decay heat calculations using SCALE modules
Andreas Pautz, Dimitri Rochman, Stefano Caruso
Decay heat residuals of spent nuclear fuel (SNF), i.e., the differences between calculations and measurements, were obtained previously for various spent fuel assemblies (SFA) using the Polaris module of the SCALE code system. In this paper, we compare dec ...
KOREAN NUCLEAR SOC2021Investigation on the effect of eccentricity for fuel disc irradiation tests
Andreas Pautz, Carlo Fiorina, Alessandro Scolaro
A varying degree of eccentricity always exists in the initial configuration of a nuclear fuel rod. Its impact on traditional LWR fuel is limited as the radial gap closes relatively early during irradiation. However, the effect of misalignment is expected t ...
2021Growth and viability of microorganisms in bentonite and their potential activity in deep geological repository environments
Radioactive waste is among the most dangerous anthropogenic waste and its safe disposal is a challenging multi-generational task. Many nations have sought for the peaceful application of nuclear fission for the reliable production of electric energy to pow ...
EPFL2021