Cel The homogeneity of several radionuclides measured by different analytical procedures, on 2 real cement embedded wastes, were compared by the evaluation of homogeneity using statistical criteria as a function of 2 main dimensions, the radial and the longitudinal. Contradictory conclusions were established. In the same study, analytical procedures were proposed concerning strontium-90, plutonium-241, carbon-14 and hydrogen-3 determinations. Additionally, the interactions between gamma-rays and organic embedding matrices such as bitumen were studied. The phenomena involved were: the evolution of radiolytic gases, the swelling and the identification of the trapped gases, and the transfer ability. The development of a nondestructive measurement technique for the assessment of the level of alpha-emitters in waste has been carried out with the MACRO system using gamma spectrometry on americium-241 and replacing the passive neutron counting technique previously used. Lastly, a nondestructive measurement technique using 2 devices was developed for the assessment of free water in cemented radwaste packages. Dziedzina nauki natural scienceschemical sciencesnuclear chemistryradiation chemistry Program(-y) FP1-RADWASTOM 3C - Research and development programme (Euratom) on the management and storage of radioactive waste, 1985-1989 Temat(-y) Data not available Zaproszenie do składania wniosków Data not available System finansowania CSC - Cost-sharing contracts Koordynator Commissariat à l'Energie Atomique (CEA) Wkład UE Brak danych Adres Centre d'Études de Cadarache Sere-Ders 13113 SAINT-PAUL-LEZ-DURANCE Francja Zobacz na mapie Koszt całkowity Brak danych
