Another great problems facing humanity with the issue of the use of radioactivity for different purposes is the subject of nuclear waste industry considers waste radiactivos.La any radioactive material that contains radionuclides at concentrations higher than those established by the competent authorities and which is not intended for any use. Waste radioactive can be classified in many different ways depending on their characteristics, such as physical condition (ie whether they are gases, liquids or solids), the type of radiation they emit (alpha, beta or gamma), the period of half-life (life short, medium or long), and specific activity (baja. medium, high). It is normal to see them waste classified as low, medium and high activity, although in some countries manage each separately, in countries like Spain are just two categories: those with low and intermediate level on one side and high for another.
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