the highly radioactive materials produced as byproducts of fuel reprocessing or of the reactions that occur inside nuclear reactors, The radioactive liquid containing most of the fission products and actinides present in spent fuel — which forms the residue from the first solvent extraction cycle in reprocessing — and some of the associated waste streams; this material following solidification; spent fuel (if it is declared as waste); or any other waste with similar radiological characteristics., materials containing enough concentrations of beta- and gamma-emitting fission products to give rise to high heat generation rates. The main source of such wastes is the highly radioactive liquid residue ... from reprocessing the irradiated fuel elements, materjalid, mis sisaldavad kõrgaktiivsed isotoope, mis saadakse kasutatud tuumkütuse ümbertöötamisel või tekivad tuumareaktorites