RESUMENSe ha llevado a cabo un estudio de la concentración de gas radón en la Escuela Universitaria de Arquitectura Técnica de la Universidade da Coruña. Para ello se ha analizado la ubicación del edificio, el terreno y los materiales de construcción empleados. A continuación se han efectuado mediciones para determinar la concentración de gas radón, empleando dos técnicas: medida in situ con un detector de cámara de ionización (corto espacio de tiempo), y medida con detectores de trazas (largo espacio de tiempo). En función de los resultados obtenidos, y teniendo en cuenta la legislación vigente (BOE, Instrucción IS-33, de 21 de diciembre de 2011), se han efectuado medidas correctoras (sellado de grietas, instalación de un sistema mecánico de ventilación) con el objetivo de mitigar las elevadas concentraciones de radón. Tras la ejecución de dichas medidas correctoras se efectuaron nuevas mediciones, verificándose la mitigación de radón en valores que oscilan entre el 50 y el 90 %.Palabras clave: radón; cámara de ionización; detectores de trazas; ventilación mecánica; mitigación.
ABSTRACT
A study of the radon activity concentration was carried out at the School of Computer Science of ‘Universidade da Coruña’ (UDC, Spain). For this purpose, building location, the type of soil and the construction materials were analysed. Subsequently, the radon activity concentration was determined using two different techniques: measurement in situ with an on-site ionization chamber detector (short term) and measurement with trace detectors (long term). Based on the results obtained, and according with the Spanish Law (Spanish Official Bulletin—Boletín Oficial del Estado, of 21 December 2011, IS-33 Instruction), corrective works were performed, consisting on the installation of a forced ventilation system underneath the extent of the suspended floor in order to mitigate the high radon specific activity in the building. Four months and 3 years after the works, new measurements were carried out in order to verify the effectiveness of the new ventilation system, obtaining a decrease of the radon gas values ranging between 87% and 90%, which confirmed long term effectivity.
Creating learning experiences through classroom projects in which students learn as a team to solve complex problems and develop creative and critical thinking is a challenge. Design Thinking is a methodology whose goal is to create an innovative design based on the user's needs (User Experience). Using this tool, an experience of design, modeling and 3D printing linked to the current context of the pandemic produced by COVID-19 was developed in the subject of Graphic Expression. This experience involved first year students of three STEAM degrees of the University of A Coruña. The activities were planned in such a way that they could be done in person or remotely. Tutoring and monitoring of student progress was done through Microsoft Teams and Moodle. The Moodle Workshop tool was used for the evaluation of the developed prototypes. The survey results were very positive. Design Thinking projects also had a positive effect on the grades.
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