the first benefit of nuclear power is that Radioactive Waste
the nuclear waste contain radio isotopes with long half-lives.
this mean that the radio isotopes stay in the atmosphere in some from or the other
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Confinement versus dispersion
There has been a continuous public concern that nuclear waste cannot be safely managed. However, managing nuclear waste is less of a problem because the quantities are remarkably small relative to the energy produced. The small quantities permit a confinement strategy for the radioactive material, beginning with the nuclear fission process and through to waste disposal, essentially isolated from the environment [Fig.: Two Alternative Waste Strategies]. Disposal techniques exist and the hazard decreases with time owing to radioactive decay. The main disposal options are simple near surface, engineered structures, mined cavities, and deep geological repositories. Some thirty countries currently operate licensed repositories for low and intermediate level radioactive waste.
In sharp contrast, disposal of the large quantities of fossil fuel waste follows an alternative dispersion strategy. Most of the waste (noxious gases and many toxic pollutants) is dispersed directly into the atmosphere while some solid waste containing toxic pollutants is buried in shallow ground, there being no practical alternative. The waste is dispersed or buried at concentrations considered not harmful. While the resulting impact can be small, the cumulative waste over many years from a large number of waste producing activities can easily overburden the natural environment, locally as well as globally.