radioactive decontamination(The removal of radioactive contamination which is deposited on surfaces or may have spread throughout a work area. Personnel decontamination is also included. Decontamination methods follow two broad avenues of attack, mechanical and chemical)
radioactive dumping(Waste generated by the emission of particulate or electromagnetic radiation resulting from the decay of the nuclei of unstable elements)
radioactive emission(The release of radioactive substances into the environment deriving from nuclear installations and from mining, purification and enrichment operations of radioactive elements)