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Numerical modeling of radionuclide migration through a borehole disposal site

The migration of radionuclides from a borehole repository located about 20 km from the Akwapim fault line which lies in an area of high seismicity was analyzed for some selected radionuclides. In the event of a seismic activity, fractures and faults could be rejuvenated or initiated resulting in con...

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Detalles Bibliográficos
Autores principales: Yeboah, Serwaa, Akiti, Thomas T, Fletcher, John J
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer International Publishing 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4000598/
https://www.ncbi.nlm.nih.gov/pubmed/24790811
http://dx.doi.org/10.1186/2193-1801-3-155
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author Yeboah, Serwaa
Akiti, Thomas T
Fletcher, John J
author_facet Yeboah, Serwaa
Akiti, Thomas T
Fletcher, John J
author_sort Yeboah, Serwaa
collection PubMed
description The migration of radionuclides from a borehole repository located about 20 km from the Akwapim fault line which lies in an area of high seismicity was analyzed for some selected radionuclides. In the event of a seismic activity, fractures and faults could be rejuvenated or initiated resulting in container failure leading to the release of radionuclides. A numerical model was solved using a two-dimensional finite element code (Comsol Multiphysics) by taking into account the effect of heterogeneities. Results showed that, the fractured medium created preferential pathways indicating that, fault zones generated potential paths for released radionuclides from a radioactive waste repository. The results obtained showed that variations in hydraulic conductivity as a result of the heterogeneity considered within the domain significantly affected the direction of flow.
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spelling pubmed-40005982014-04-30 Numerical modeling of radionuclide migration through a borehole disposal site Yeboah, Serwaa Akiti, Thomas T Fletcher, John J Springerplus Research The migration of radionuclides from a borehole repository located about 20 km from the Akwapim fault line which lies in an area of high seismicity was analyzed for some selected radionuclides. In the event of a seismic activity, fractures and faults could be rejuvenated or initiated resulting in container failure leading to the release of radionuclides. A numerical model was solved using a two-dimensional finite element code (Comsol Multiphysics) by taking into account the effect of heterogeneities. Results showed that, the fractured medium created preferential pathways indicating that, fault zones generated potential paths for released radionuclides from a radioactive waste repository. The results obtained showed that variations in hydraulic conductivity as a result of the heterogeneity considered within the domain significantly affected the direction of flow. Springer International Publishing 2014-03-21 /pmc/articles/PMC4000598/ /pubmed/24790811 http://dx.doi.org/10.1186/2193-1801-3-155 Text en © Yeboah et al.; licensee Springer. 2014 This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited.
spellingShingle Research
Yeboah, Serwaa
Akiti, Thomas T
Fletcher, John J
Numerical modeling of radionuclide migration through a borehole disposal site
title Numerical modeling of radionuclide migration through a borehole disposal site
title_full Numerical modeling of radionuclide migration through a borehole disposal site
title_fullStr Numerical modeling of radionuclide migration through a borehole disposal site
title_full_unstemmed Numerical modeling of radionuclide migration through a borehole disposal site
title_short Numerical modeling of radionuclide migration through a borehole disposal site
title_sort numerical modeling of radionuclide migration through a borehole disposal site
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4000598/
https://www.ncbi.nlm.nih.gov/pubmed/24790811
http://dx.doi.org/10.1186/2193-1801-3-155
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