Pratique du Shadowing: Radioactive Waste - Apprendre l'anglais à l'oral avec la vidéo
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Waste is an unavoidable consequence of everyday life.
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In terms of volume, radioactive waste is a very small portion of all waste.
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It's the byproduct of millions of medical procedures each year, industrial and agricultural applications that use radiation,
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and nuclear reactors that generate around 10 % of global electricity.
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Radioactive waste requires careful management to protect people and the environment from radiation now and in the future.
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Radioactive waste is first characterized to determine its physical and chemical properties as well as its radioactivity.
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It's then processed, which may include sorting, decontamination and steps to reduce volume.
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The waste is classified based on its long -term management objectives
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and put into a safe condition for interim storage and, ultimately, disposal.
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Very low -level waste and low -level waste contain small amounts of radioactive substances.
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It includes waste generated by industries and hospitals or items such as clothes used in nuclear facilities.
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This waste requires minimal isolation and is suitable for disposal in near -surface facilities.
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Intermediate -level waste is more radioactive and typically comprises materials from decommissioned reactors and research laboratories.
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It requires more containment and isolation.
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High -level waste presents the greatest hazard.
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It accounts for a minute portion of the total volume of all radioactive waste and includes waste from nuclear power plants.
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High -level waste requires greater containment and its disposal is planned in engineered facilities several hundred meters underground.
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In the meantime, it is safely stored in purpose -built facilities.
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The IAEA provides support to countries in the safe management of all radioactive waste.
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À propos de cette leçon
Vous vous entraînez en anglais avec "Radioactive Waste" en utilisant la technique du Shadowing.
Qu'est-ce que la technique du Shadowing ?
Le Shadowing est une technique d'apprentissage des langues fondée sur la science, développée à l'origine pour la formation des interprètes professionnels. Le principe est simple mais puissant : vous écoutez de l'anglais natif et le répétez immédiatement à voix haute — comme une ombre suivant le locuteur avec un décalage de 1 à 2 secondes. Les recherches montrent une amélioration significative de la précision de la prononciation, de l'intonation, du rythme, des liaisons, de la compréhension orale et de la fluidité.