Objectif As the PAGIS (Performance Assessment of Geological Isolation Systems for Radioactive Waste) /1/ and PACOMA (Performance Assessment of COnfinements for Medium and Alpha Contaminated Waste) /2/ safety studies have indicated, the migration of the critical radionuclides in the Boom clay is one of the key factors in the overall HLW disposal concept in Belgium. For this reason this programme aims at identifying the relevant migration mechanisms and at quantifying the migration parameters for these radionuclides.This programme, a continuation of ongoing research, involves both percolation/diffusion experiments in the laboratory and in situ (underground lab.).Work programme: 1. Migration experiments in the laboratoryFor a selected list of critical (14C, 99Tc, 135Cs, 237Np) and possibly critical radionuclides (79Se, 93Zr, 107Pd, U-, Am- and Cm-isotopes) as well as for dissolved organic molecules migration experiments in clay cores will be executed.2. In situ migration experimentsIn situ migration tests with HTO (tritiated water) and 134Cs were started previously and are regularly monitored.Additional tests with Am, Tc and HTO are planned. Champ scientifique engineering and technologyother engineering and technologiesnuclear engineeringnuclear waste managementnatural scienceschemical sciencesnuclear chemistryradiation chemistry Programme(s) FP2-RADWASTOM 4C - Specific research and technical development programme (Euratom) in the field of management and storage of radioactive waste, 1990-1994 Thème(s) A.4.3 - Radionuclide migration in the geosphere Appel à propositions Data not available Régime de financement CSC - Cost-sharing contracts Coordinateur Organisme National des Déchets Radioactifs et des Matières Fissiles Contribution de l’UE Aucune donnée Adresse 1,Place Madou - Boites 24/25 1030 Bruxelles Belgique Voir sur la carte Coût total Aucune donnée Participants (1) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire Centre d'Etudes de l'Energie Nucléaire-Studiecentrum voor Kernenergie CEN/SCK Belgique Contribution de l’UE Aucune donnée Adresse 200,Boeretang 2400 Mol Voir sur la carte Coût total Aucune donnée