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Descripción
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| An event in November 2007 in Ascó-1 nuclear power plant (NPP) in Spain, originated the release of a significant amount of active metallic particles through the discharge stack. Particles were dispersed and deposited in roofs and neighbouring areas within the NPP controlled area. However, the event was not detected until March 2008. More than 1,300 active points with radioactive particles were found, 94 % located inside the double fenced controlled area and 6 % within the exclusion area; 5 particles were found out of the exclusion area. To provide additional insights on the potential consequences of the release, a computational fluid dynamics (CFD) code, ANSYS-CFX-11, has been used to investigate the near-range atmospheric dispersion and deposition of the particles. The purpose of the analysis was to assess the distance travelled by particles of different sizes. A very detailed model of the site was built, taking into account the buildings and the terrain features including the river valley and the surrounding hills. The modelled domain was 3.2 x 5.2 km, with the atmospheric layer up to 4 km height. The atmospheric conditions recorded during the different periods of time between November 2007 and January 2008 was classified into 37 representative categories. In general, the distribution of the particles found was adequately reproduced by the numerical model. The detailed CFD simulation allowed answering relevant questions concerning the possibility of having an impacted region larger than the exclusion area. | |
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Internacional
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Si |
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JCR del ISI
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Si |
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Título de la revista
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Environmental Fluid Mechanics |
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ISSN
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1567-7419 |
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Factor de impacto JCR
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1,899 |
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Información de impacto
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Datos JCR del año 2012 |
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Volumen
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online |
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DOI
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10.1007/s10652-014-9359-y |
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Número de revista
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online |
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Desde la página
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1 |
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Hasta la página
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17 |
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Mes
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JUNIO |
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Ranking
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