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AbstractAbstract
[en] In France, fission products and minor actinides remaining after reprocessing of spent nuclear fuel are confined in a borosilicate glass matrix, named R7T7, for disposal in a geological repository. However, in these conditions, after several thousand years, water could arrive in contact with glass and be radio-lysed. In this work, we investigated the irradiation influence and especially the influence of the energy deposition on the residual glass alteration rate regime in pure water. Two types of leaching tests have been carried out. The first were performed on radioactive glass and the second on a SON68 glass (nonradioactive surrogate of R7T7 glass) under external irradiation γ. (author)
[fr]
En France les produits de fission et les actinides mineurs issus du retraitement des combustibles nucleaires uses sont confines dans une matrice vitreuse borosilicatee, appelee R7T7 et destinee a un stockage en site geologique profond. Cependant, dans ces conditions, apres plusieurs milliers d'annees, l'eau peut arriver au contact du colis de verre et etre radiolysee par ses rayonnements. Dans ce travail de these, nous avons etudie l'influence de l'irradiation et notamment d'un depot d'energie electronique sur l'etape de cinetique residuelle d'alteration du verre par l'eau, qui devrait piloter a terme le comportement de la matrice et le relachement des radionucleides. Deux etudes complementaires de lixiviation de verres en eau pure ont ete realisees, la premiere sur des verres radioactifs de type R7T7, la seconde sur un verre SON68, simulant inactif du verre R7T7 sous irradiation externe γOriginal Title
La lixiviation des verres nucleaires de type R7T7 sous irradiation. Etude du regime de cinetique residuelle d'alteration
Primary Subject
Source
15 Nov 2012; 315 p; CEA-R--6347; refs.; Available from the INIS Liaison Officer for France, see the 'INIS contacts' section of the INIS website for current contact and E-mail addresses: http://www.iaea.org/inis/Contacts/; Also available from Bibliotheque universitaire, Service Commun de la Documentation, Domaine de la Doua 20 avenue Gaston Berger BP 72215 69622 Villeurbanne cedex (France); Chimie
Record Type
Report
Literature Type
Thesis/Dissertation
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Country of publication
CHEMICAL RADIATION EFFECTS, CHEMICAL REACTIONS, DECOMPOSITION, DISSOLUTION, ENVIRONMENTAL TRANSPORT, GLASS, HYDROGEN COMPOUNDS, KINETICS, LIFETIME, MANAGEMENT, MASS TRANSFER, MINERALS, OXYGEN COMPOUNDS, RADIATION EFFECTS, RADIOACTIVE WASTE MANAGEMENT, REACTION KINETICS, SEPARATION PROCESSES, SILICATE MINERALS, STORAGE, WASTE DISPOSAL, WASTE MANAGEMENT, WASTE STORAGE, WATER
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