2026-04-13T00:50:33Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/1020012025-07-23T06:04:11Zcom_2072_1033col_2072_452951

Estimations of toxic vapour concentrations, by atmospheric dispersion calculations, in a nuclear power plant control room, following an offsite accidental release in the frame of probabilistic safety assessment Gómez Lobo, Antonio Universitat Politècnica de Catalunya. Departament de Física Blas del Hoyo, Alfredo de Àrees temàtiques de la UPC::Energies::Energia nuclear Nuclear power plants--Safety measures Centrals nuclears -- Mesures de seguretat This project is categorized as an atmospheric dispersion study about how a toxic gas external dispersion might reach a nuclear power plant control room with dangerous concentration. In fact, it is contained within a larger project, which studies how likely a train accident, related with hazardous materials transport, could end up in a dangerous toxic vapour concentration in the control room, affecting the plant safety. The scope of the actual study is to obtain control room toxic vapour concentrations by performing a probabilistic approach of atmospheric dispersion calculations. The goal is to apply a prospective approach, aiming to use the results in the probabilistic safety assessment of the plant. The tasks developed consist of regulations review, atmospheric dispersion codes comparison and selection, scenario design and release points distribution, meteorological analysis and calculations automation, and finally, control room vapour diffusion calculations. The Nuclear Energy Agency (NEA) has provided the Nuclear Engineering Research Group (NERG) from the Technical University of Catalonia (UPC) with the dispersion and diffusion codes, HABIT and ARCON96, for the development of the present study, under consideration of academic purposes. The whole project is developed within the frame of a collaborative agreement between NERG group (UPC) and Nuclear Plant Licensee. Since this agreement is confidential, no real names and codification for the plant and its systems, components and materials are used. Therefore, the generic expression “The plant” is written instead. 2016-06 Master thesis https://hdl.handle.net/2117/102001 eng http://creativecommons.org/licenses/by-nc-nd/3.0/es/ Open Access Attribution-NonCommercial-NoDerivs 3.0 Spain application/pdf application/pdf Universitat Politècnica de Catalunya