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Instant release fraction corrosion studies of commercial UO 2 BWR spent nuclear fuel

Autor: Joan de Pablo, A. Martínez-Torrents, Daniel Serrano-Purroy, Rosa Sureda, Ignasi Casas

Publikováno v: Recercat. Dipósit de la Recerca de Catalunya
instname
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

The instant release fraction of a spent nuclear fuel is a matter of concern in the performance assessment of a deep geological repository since it increases the radiological risk. Corrosion studies of two different spent nuclear fuels were performed

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ebe9b4350548ed9e70354ea8994111d5
https://doi.org/10.1016/j.jnucmat.2017.03.022

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Dissolution experiments of commercial PWR (52 MWd/kgU) and BWR (53 MWd/kgU) spent nuclear fuel cladded segments in bicarbonate water under oxidizing conditions. Experimental determination of matrix and instant release fraction

Autor: Rosa Sureda, E. González-Robles, Ignasi Casas, J. de Pablo, Daniel Serrano-Purroy

Publikováno v: Recercat. Dipósit de la Recerca de Catalunya
instname
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

The denominated instant release fraction (IRF) is considered in performance assessment (PA) exercises to govern the dose that could arise from the repository. A conservative definition of IRF comprises the total inventory of radionuclides located in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8020155bc9c4d241d43bb2a5afb1241e
https://doi.org/10.1016/j.jnucmat.2015.05.012

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Instant release of fission products in leaching experiments with high burn-up nuclear fuels in the framework of the Euratom project FIRST- Nuclides

Autor: Rosa Sureda, O. Roth, Zoltán Hózer, E. Slonszki, Thierry Mennecart, Ines Günther-Leopold, Karel Lemmens, Enzo Curti, A. Martínez-Torrents, Bernhard Kienzler, Daniel Serrano-Purroy, E. González-Robles

Publikováno v: Journal of nuclear materials, 484, 307–323

The instant release of fission products from high burn-up UO 2 fuels and one MOX fuel was investigated by means of leach tests. The samples covered PWR and BWR fuels at average rod burn-up in the range of 45–63 GWd/t HM and included clad fuel segme

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1398c714e3c5d05ace22e513ace3d7da
https://publikationen.bibliothek.kit.edu/1000066126/6848278

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Interpretation of Knudsen Cell Experiments to determine the Instant Release Fraction in Spent Fuel Corrosion Scenarios by using a Mechanistic Approach: the Caesium Case

Autor: Ondrej Beneš, Marc Barrachin, Ignasi Casas, Laura Aldave de las Heras, Jean Yves Colle, E. González-Robles, Rosa Sureda, Aurora Martinez-Esparza, Joan de Pablo, Jean-Paul Glatz, R. Dubourg, Daniel Serrano-Purroy

Publikováno v: MRS Proceedings. 1665:275-281

The Knudsen Effusion Mass Spectrometer (KEMS) and the mechanistic MFPR (Module for Fission Product Release) code are tools which seem particularly interesting to support studies of the Instant Release Fraction (IRF) of Cs from spent nuclear fuel in a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d8b82e4de72441203bbe8e3f7e7f47e6
https://doi.org/10.1557/opl.2014.655

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Kinetics of hydrogen peroxide consumption in aqueous phase at different hydrogen partial pressures

Autor: Javier Giménez, Ignasi Casas, Rosa Sureda, Joan de Pablo

Publikováno v: Radiochimica Acta. 100:445-448

The reaction between aqueous hydrogen peroxide solutions and hydrogen has been studied at room temperature and in the absence of catalytic products. The concentrations of the hydrogen peroxide solutions used are in the level expected to be obtained b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dd8f5e54f6586f86eb9648817680f08e
https://doi.org/10.1524/ract.2012.1940

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Sorption of strontium on uranyl peroxide: Implications for a high-level nuclear waste repository

Autor: Javier Giménez, Xavier Martínez-Lladó, Rosa Sureda, Miquel Rovira, Joan de Pablo, Ignasi Casas

Publikováno v: Recercat. Dipósit de la Recerca de Catalunya
instname
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

Strontium-90 is considered the most important radioactive isotope in the environment and one of the most frequently occurring radionuclides in groundwaters at nuclear facilities. The uranyl peroxide studtite (UO2O2 center dot 4H(2)O) has been observe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b526b805a668884ef424aff45ef143c0
https://doi.org/10.1016/j.jhazmat.2010.05.095

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Cesium sorption on studtite (UO2O2·4H2O)

Autor: Miquel Rovira, Aurora Martinez-Esparza, Xavier Martínez-Lladó, Ignasi Casas, Javier Giménez, Joan de Pablo, Rosa Sureda

Publikováno v: Radiochimica Acta. 98:479-483

One of the mechanisms that may decrease the mobility of cesium released from spent fuel in a high level nuclear waste repository (HLNW) is its sorption onto uranyl-containing alteration phases formed on the spent fuel surface such as studtite (UO2O2�

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4d2c8c1672ccc3b078dc624aee82944a
https://doi.org/10.1524/ract.2010.1742

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Effects of ionizing radiation and temperature on uranyl silicates: soddyite (UO2)2(SiO4)(H2O)2 and Uranophane Ca(UO2)2(SiO3OH)2·5H2O

Autor: Rodney C. Ewing, J. Quiñones, Rosa Sureda, J. de Pablo, J. Zhang, Javier Giménez, Ignasi Casas

Publikováno v: Environmental sciencetechnology. 45(6)

The stability of soddyite under electron irradiation has been studied over the temperature range of 25-300 °C. At room temperature, soddyite undergoes a crystalline-to-amorphous transformation (amorphization) at a total dose of 6.38 × 10(8) Gy. The

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::856685ce358dbe36cdaa0a910ff319a7
https://pubmed.ncbi.nlm.nih.gov/21319815

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Interaction of Hydrogen Peroxide With Carbon Steel and Magnetite

Autor: Ignasi Casas, Joan de Pablo, Javier Giménez, Rosa Sureda

Publikováno v: Scopus-Elsevier

Hydrogen peroxide is considered as one of the main oxidants formed due to the radiolysis of water. In a spent nuclear fuel repository, it is necessary to establish the interaction of hydrogen peroxide with the elements constituting the repository. Th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::503090dbff48a107faebe2b0b68fd949
https://doi.org/10.1557/proc-1193-429

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Kinetics of UO2(s) Dissolution in the Presence of Hypochlorite, Chlorite, and Chlorate Solutions

Autor: Joan de Pablo, Ignasi Casas, Javier Giménez, Rosa Sureda

Publikováno v: MRS Proceedings. 1107

The influence of hypochlorite, chlorite and chlorate in the UO2dissolution rate has been studied experimentally using a continuous flow-through reactor. Uranium concentration in each outflow solution was measured as a function of time and dissolution

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0600055cb42f814c1ae1682b52079227
https://doi.org/10.1557/proc-1107-599

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