This paper addresses the measurement facilities for pre-selection of waste materials prior to measurement for repository acceptance or possible free release (segregation measurement system); and free release (free release measurement system), based on a single standardized concept characterized by unique, patented lead-free shielding. The key objective is to improve the throughput, accuracy, reliability, modularity and mobility of segregation and free-release measurement. This will result in a more reliable decision-making with regard to the safe release and disposal of radioactive wastes into the environment and, resulting in positive economic outcomes. The research was carried out within "Metrology for Decommissioning Nuclear Facilities" (MetroDecom) project.

Agenzia Nazionale per le nuove tecnologie l'energia e lo sviluppo economico sostenibile Via Anguillarese 301 S M Galeria 1 00123 Roma Italy

Czech Metrology Institute Okruzni 31 638 00 Brno Czech Republic

Joint Research Centre European Commission Via E Fermi 2749 1 21027 Italy

National Physical Laboratory Hampton Road TW11 0LW Teddington United Kingdom

Nuvia a s Modrinova 1094 674 01 Trebic Czech Republic

Physikalisch Technische Bundesanstalt Bundesallee 100 38116 Braunschweig Germany

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