SUPERFACT: A Model Fuel for Studying the Evolution of the Microstructure of Spent Nuclear Fuel during Storage/Disposal

The transmutation of minor actinides (in particular, Np and Am), which are among the main contributors to spent fuel α-radiotoxicity, was studied in the SUPERFACT irradiation. Several types of transmutation UO<sub>2</sub>-based fuels were produced, differing by their minor actinide conte...

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Autores principales:	Thierry Wiss, Oliver Dieste, Emanuele De Bona, Alessandro Benedetti, Vincenzo Rondinella, Rudy Konings
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	alpha-damage SUPERFACT irradiation spent fuel microstructure helium Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/5aa380f3fbfe4f6581efa963d6eceea3
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spelling	oai:doaj.org-article:5aa380f3fbfe4f6581efa963d6eceea32021-11-11T18:06:12ZSUPERFACT: A Model Fuel for Studying the Evolution of the Microstructure of Spent Nuclear Fuel during Storage/Disposal10.3390/ma142165381996-1944https://doaj.org/article/5aa380f3fbfe4f6581efa963d6eceea32021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6538https://doaj.org/toc/1996-1944The transmutation of minor actinides (in particular, Np and Am), which are among the main contributors to spent fuel α-radiotoxicity, was studied in the SUPERFACT irradiation. Several types of transmutation UO<sub>2</sub>-based fuels were produced, differing by their minor actinide content (<sup>241</sup>Am, <sup>237</sup>Np, Pu), and irradiated in the Phénix fast reactor. Due to the high content in rather short-lived alpha-decaying actinides, both the archive, but also the irradiated fuels, cumulated an alpha dose during a laboratory time scale, which is comparable to that of standard LWR fuels during centuries/millenaries of storage. Transmission Electron Microscopy was performed to assess the evolution of the microstructure of the SUPERFACT archive and irradiated fuel. This was compared to conventional irradiated spent fuel (i.e., after years of storage) and to other <sup>238</sup>Pu-doped UO<sub>2</sub> for which the equivalent storage time would span over centuries. It could be shown that the microstructure of these fluorites does not degrade significantly from low to very high alpha-damage doses, and that helium bubbles precipitate.Thierry WissOliver DiesteEmanuele De BonaAlessandro BenedettiVincenzo RondinellaRudy KoningsMDPI AGarticlealpha-damageSUPERFACT irradiationspent fuelmicrostructureheliumTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6538, p 6538 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	alpha-damage SUPERFACT irradiation spent fuel microstructure helium Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	alpha-damage SUPERFACT irradiation spent fuel microstructure helium Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Thierry Wiss Oliver Dieste Emanuele De Bona Alessandro Benedetti Vincenzo Rondinella Rudy Konings SUPERFACT: A Model Fuel for Studying the Evolution of the Microstructure of Spent Nuclear Fuel during Storage/Disposal
description	The transmutation of minor actinides (in particular, Np and Am), which are among the main contributors to spent fuel α-radiotoxicity, was studied in the SUPERFACT irradiation. Several types of transmutation UO<sub>2</sub>-based fuels were produced, differing by their minor actinide content (<sup>241</sup>Am, <sup>237</sup>Np, Pu), and irradiated in the Phénix fast reactor. Due to the high content in rather short-lived alpha-decaying actinides, both the archive, but also the irradiated fuels, cumulated an alpha dose during a laboratory time scale, which is comparable to that of standard LWR fuels during centuries/millenaries of storage. Transmission Electron Microscopy was performed to assess the evolution of the microstructure of the SUPERFACT archive and irradiated fuel. This was compared to conventional irradiated spent fuel (i.e., after years of storage) and to other <sup>238</sup>Pu-doped UO<sub>2</sub> for which the equivalent storage time would span over centuries. It could be shown that the microstructure of these fluorites does not degrade significantly from low to very high alpha-damage doses, and that helium bubbles precipitate.
format	article
author	Thierry Wiss Oliver Dieste Emanuele De Bona Alessandro Benedetti Vincenzo Rondinella Rudy Konings
author_facet	Thierry Wiss Oliver Dieste Emanuele De Bona Alessandro Benedetti Vincenzo Rondinella Rudy Konings
author_sort	Thierry Wiss
title	SUPERFACT: A Model Fuel for Studying the Evolution of the Microstructure of Spent Nuclear Fuel during Storage/Disposal
title_short	SUPERFACT: A Model Fuel for Studying the Evolution of the Microstructure of Spent Nuclear Fuel during Storage/Disposal
title_full	SUPERFACT: A Model Fuel for Studying the Evolution of the Microstructure of Spent Nuclear Fuel during Storage/Disposal
title_fullStr	SUPERFACT: A Model Fuel for Studying the Evolution of the Microstructure of Spent Nuclear Fuel during Storage/Disposal
title_full_unstemmed	SUPERFACT: A Model Fuel for Studying the Evolution of the Microstructure of Spent Nuclear Fuel during Storage/Disposal
title_sort	superfact: a model fuel for studying the evolution of the microstructure of spent nuclear fuel during storage/disposal
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/5aa380f3fbfe4f6581efa963d6eceea3
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SUPERFACT: A Model Fuel for Studying the Evolution of the Microstructure of Spent Nuclear Fuel during Storage/Disposal

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