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Title:
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Modelling tritium transport, matrix diffusion and multiphase flow in a concrete cell used for storing radioactive waste at El Cabril (Spain)
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Author:
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Chaparro Sánchez, Maria Carme; Saaltink, Maarten Willem
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental; Universitat Politècnica de Catalunya. GHS - Grup d'Hidrologia Subterrània |
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Abstract:
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‘El Cabril’ is the low and intermediate level radioactive waste disposal facility of Spain. Water with high concentration of tritium is collected from a drain, which is situated at the centre of a concrete cell that stores radioactive waste, indicating flow of water within the cell. 2D numerical models have been made in order to develop a qualitative and partial quantitative understanding of the processes that causes this phenomenon. The conceptual model considers evaporation and condensation processes due to temperature gradients, matrix diffusion between a mobile zone (with advection, dispersion and diffusion) and an immobile zone (with only diffusion). Model results suggest that only the tritiated water used to prepare the mortar to refill the containers, which can be in liquid and gas phases, could leave the cell being collected in the drain. |
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Subject(s):
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-Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Enginyeria ambiental::Tractament dels residus
-Àrees temàtiques de la UPC::Enginyeria civil::Geologia::Hidrologia subterrània
-Radioactive waste disposal in the ground--Mathematical models
-Tritium transport
-double porosity
-matrix diffusion
-multiphase flow
-Abocadors de residus radioactius |
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Rights:
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Document type:
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Article - Published version
Conference Object |
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Published by:
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International Centre for Numerical Methods in Engineering (CIMNE)
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