Publicación: Dust contamination of Divertor Remote Handling System in ITER Hot Cell: A novel approach to model complex superficial radiation sources
Fecha
2024
Autores
F., Javier
Le Tonquèze, Yannick
Hamilton, David Thomas
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Prologuista
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Derechos de acceso
info:eu-repo/semantics/openAccess
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Resumen
Activated dust produced by the erosion of plasma-facing components entails a significant radiation source for ITER and, generally, for all tokamaks aiming for operation under high neutron exposure. In-Vessel remote-handling operations will mobilise the dust, which will be deposited on the remote-handling tools used, for which hands-on maintenance is expected. To ensure safe maintenance of the remote-handling equipment, a dedicated decontamination process in the Hot Cell is required. Evaluating the radiation fields produced by the contaminated equipment is central to minimising radiation exposure to personnel. In this study, we present a nuclear analysis of the Divertor Remote Handling System during its transfer and decontamination process. Past computational limitations regarding superficial sources definition and high uncertainties on the dust model have been overcome by implementing a novel methodology and following an alternative approach. Two surface-dependent dust distributions over the complex geometry surfaces were considered to evaluate the dose rates according to the different contamination levels during the process phases. A scoping analysis was performed to determine the amount of dust that would comply with project requirements in each phase of the process. Improvement margins were identified in the quantification of the amount of dust and Hot Cell layout.
Descripción
The registered version of this article, first published in “Fusion Engineering and Design, Volume 199, 2024", is available online at the publisher's website: Elsevier, https://doi.org/10.1016/j.fusengdes.2024.114157
La versión registrada de este artículo, publicado por primera vez en “Fusion Engineering and Design, Volume 199, 2024", está disponible en línea en el sitio web del editor: Elsevier, https://doi.org/10.1016/j.fusengdes.2024.114157
Categorías UNESCO
Palabras clave
activated dust, dose rate, remote-handling, ITER, hot Cell
Citación
P. Martínez-Albertos, P. Sauvan, J.P. Catalán, F. Javier, Y. Le Tonqueze, D. Hamilton, R. Juárez, Dust contamination of Divertor Remote Handling System in ITER Hot Cell: A novel approach to model complex superficial radiation sources, Fusion Engineering and Design, Volume 199, 2024, 114157, ISSN 0920-3796, https://doi.org/10.1016/j.fusengdes.2024.114157
Centro
Facultades y escuelas::E.T.S. de Ingenieros Industriales
Departamento
Ingeniería Energética