Caesium and iodine release from spent mixed oxide fuels under repository relevant conditions: Initial leaching results

Autoclave leaching experiments are conducted on three well-characterised, irradiated, and cladded mixed oxide fuel-rod segments with burnups ranging from 29 GWd/t(HM) to 52 GWd/t(HM) to investigate the instant release fraction of fission gases and long-lived fission products and to assess the long-t...

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Autores principales: Schreinemachers, Christian, Leinders, Gregory, Mennecart, Thierry, Cachoir, Christelle, Lemmens, Karel, Verwerft, Marc, Brandt, Felix, Deissmann, Guido, Modolo, Giuseppe, Bosbach, Dirk
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer International Publishing 2022
Materias:
Original Paper
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9127040/
https://www.ncbi.nlm.nih.gov/pubmed/35646392
http://dx.doi.org/10.1557/s43580-022-00220-7
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author Schreinemachers, Christian
Leinders, Gregory
Mennecart, Thierry
Cachoir, Christelle
Lemmens, Karel
Verwerft, Marc
Brandt, Felix
Deissmann, Guido
Modolo, Giuseppe
Bosbach, Dirk
author_facet Schreinemachers, Christian
Leinders, Gregory
Mennecart, Thierry
Cachoir, Christelle
Lemmens, Karel
Verwerft, Marc
Brandt, Felix
Deissmann, Guido
Modolo, Giuseppe
Bosbach, Dirk
author_sort Schreinemachers, Christian
collection PubMed
description Autoclave leaching experiments are conducted on three well-characterised, irradiated, and cladded mixed oxide fuel-rod segments with burnups ranging from 29 GWd/t(HM) to 52 GWd/t(HM) to investigate the instant release fraction of fission gases and long-lived fission products and to assess the long-term fuel matrix corrosion. The segments are exposed to bicarbonate solutions as reference groundwater at neutral pH and a synthetic young cementitious water at pH 13.5 under reducing atmosphere (4 vol% H(2) in Ar at 40 bar pressure), since 2018. The initial leaching results for the fission products caesium and iodine as representative elements of the instant release fraction were found to depend on the leachate composition as well as on the fuel burnup. GRAPHICAL ABSTRACT: [Image: see text]
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spelling pubmed-91270402022-05-24 Caesium and iodine release from spent mixed oxide fuels under repository relevant conditions: Initial leaching results Schreinemachers, Christian Leinders, Gregory Mennecart, Thierry Cachoir, Christelle Lemmens, Karel Verwerft, Marc Brandt, Felix Deissmann, Guido Modolo, Giuseppe Bosbach, Dirk MRS Adv Original Paper Autoclave leaching experiments are conducted on three well-characterised, irradiated, and cladded mixed oxide fuel-rod segments with burnups ranging from 29 GWd/t(HM) to 52 GWd/t(HM) to investigate the instant release fraction of fission gases and long-lived fission products and to assess the long-term fuel matrix corrosion. The segments are exposed to bicarbonate solutions as reference groundwater at neutral pH and a synthetic young cementitious water at pH 13.5 under reducing atmosphere (4 vol% H(2) in Ar at 40 bar pressure), since 2018. The initial leaching results for the fission products caesium and iodine as representative elements of the instant release fraction were found to depend on the leachate composition as well as on the fuel burnup. GRAPHICAL ABSTRACT: [Image: see text] Springer International Publishing 2022-02-09 2022 /pmc/articles/PMC9127040/ /pubmed/35646392 http://dx.doi.org/10.1557/s43580-022-00220-7 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Original Paper
Schreinemachers, Christian
Leinders, Gregory
Mennecart, Thierry
Cachoir, Christelle
Lemmens, Karel
Verwerft, Marc
Brandt, Felix
Deissmann, Guido
Modolo, Giuseppe
Bosbach, Dirk
Caesium and iodine release from spent mixed oxide fuels under repository relevant conditions: Initial leaching results
title Caesium and iodine release from spent mixed oxide fuels under repository relevant conditions: Initial leaching results
title_full Caesium and iodine release from spent mixed oxide fuels under repository relevant conditions: Initial leaching results
title_fullStr Caesium and iodine release from spent mixed oxide fuels under repository relevant conditions: Initial leaching results
title_full_unstemmed Caesium and iodine release from spent mixed oxide fuels under repository relevant conditions: Initial leaching results
title_short Caesium and iodine release from spent mixed oxide fuels under repository relevant conditions: Initial leaching results
title_sort caesium and iodine release from spent mixed oxide fuels under repository relevant conditions: initial leaching results
topic Original Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9127040/
https://www.ncbi.nlm.nih.gov/pubmed/35646392
http://dx.doi.org/10.1557/s43580-022-00220-7
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