Effectiveness of Ni-based and Fe-based cladding alloys in delaying hydrogen generation for small modular reactors with increased accident tolerance

dc.creatorAVELAR, ALAN M.
dc.creatorCAMARGO, FABIO de
dc.creatorSILVA, VANESSA S.P. da
dc.creatorGIOVEDI, CLAUDIA
dc.creatorABE, ALFREDO
dc.creatorMOURAO, MARCELO B.
dc.date2023
dc.date2023-04-24T19:51:12Z
dc.date2023-04-24T19:51:12Z
dc.date.accessioned2023-09-28T14:25:48Z
dc.date.available2023-09-28T14:25:48Z
dc.identifier1738-5733
dc.identifierhttp://repositorio.ipen.br/handle/123456789/33996
dc.identifier1
dc.identifier55
dc.identifier10.1016/j.net.2022.09.002
dc.identifier86.8
dc.identifier75
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/9004205
dc.descriptionThis study investigates the high temperature oxidation behaviour of a Ni???20Cr-1.2Si (wt.%) alloy in steam from 1200 ??C to 1350 ??C by Thermogravimetric Analysis (TGA), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDS) and X-ray Diffraction (XRD). The results demonstrate that exposed Ni-based alloy developed a thin oxide scale, consisted mainly of Cr2O3. The oxidation kinetics obtained from the experimental results was applied to evaluate the hydrogen generation considering a simplified reactor core model with different cladding alloys following an unmitigated Loss-Of-Coolant Accident (LOCA) scenario in a hypothetical Small Modular Reactor (SMR). Overall, experimental data and simulations results show that both Fe-based and Ni-based alloys may enhance cladding survivability, delaying its melting, as well as reducing hydrogen generation under accident conditions compared to Zr-based alloys. However, a substantial neutron absorption occurs when Ni-based alloys are used as cladding for current uranium-dioxide fuel systems, even when compared to Fe-based alloys.
dc.format156-168
dc.relationNuclear Engineering and Technology
dc.rightsopenAccess
dc.subjectfuel-cladding interactions
dc.subjectnickel alloys
dc.subjectstainless steels
dc.subjectoxidation
dc.subjecttemperature range 0400-1000 k
dc.subjectcladding
dc.titleEffectiveness of Ni-based and Fe-based cladding alloys in delaying hydrogen generation for small modular reactors with increased accident tolerance
dc.typeArtigo de peri??dico
dc.coverageI


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