At the moment the existing technologies regarding characterization and segregation of raw radioactive waste in classes are not affordable for countries with low amounts of radioactive waste like Greece. Regarding the NORM waste the radiological characterization and segregation is necessary for cost effective management and radiation protection of the personnel. The innovative potential of the proposed doctorate thesis is the development of a low cost, fast, cost effective and friendly to user technology for characterization and segregation of raw radioactive waste, based on the non-destructive gamma spectrometry. The technology will facilitate targeted sampling from radioactive waste items as well as radiological characterization and segregation of raw radioactive waste into classes of different management route. The application of the technology can be extended for: (1) radiological contaminated soil, (2) solidified radioactive waste, (3) NORM waste in situ characterization, which are part of the waste management services of Polyeco A.E.