Obiettivo WE SHALL SIMULATE THE TRANSPORT TO THE SURFACE OF RADIONUCLIDES RELEASED FROM A HYPOTHETICAL REPOSITORY IN A CLAY LAYER BENEATH HARWELL LABORATORY. THE RATES OF RELEASE FROM SUCH A REPOSITORY, FOR VARIOUS WASTE INVENTORIES, HAVE BEEN CALCULATED BY ELECTROWATT ENGINEERING. CAP SCIENTIFIC HAVE DERIVED PROBABILITY DISTRIBUTIONS FOR THE VALUES OF PARAMETERS INVOLVED IN THE RELEVANT GROUNDWATER-FLOW AND SOLUTE-TRANSPORT CALCULATIONS, BY STRUCTURED QUESTIONING OF GROUPS OF EXPERTS. RADIOLOGICAL RISKS DUE TO THE MIGRATION OF RADIONUCLIDES FROM THE REPOSITORY WILL BE CALCULATED BY THE NATIONAL RADIOLOGICAL PROTECTION BOARD. THE FINAL STAGE OF THE PROJECT INVOLVES A COMPARISON BY CAP SCIENTIFIC OF RADIOLOGICAL RISKS DERIVED BY PROBABILISTIC RISK ASSESSMENT AND FROM DETERMINISTIC SIMULATION. THIS ANALYSIS SHOULD IDENTIFY ANY SIGNIFICANT DIFFERENCES IN THE APPROACHES TO SAFETY ASSESSMENT ADOPTED BY UK NIREX LTD. AND BY THE UNITED KINGDOM DEPARTMENT OF THE ENVIRONMENT. 1. REVIEW, AND IF NECESSARY REVISE, EXISTING CALCULATIONS OF GROUNDWATER-FLOW IN THE VICINITY OF THE HARWELL SITE, SO AS TO ESTABLISH NUMERICAL ACCURACY AND TO EXAMINE SENSITIVITY TO MODELLING ASSUMPTIONS. 2. CARRY OUT RADIONUCLIDE-TRANSPORT CALCULATIONS AND DETERMINE HOW RESULTS DEPEND UPON UNCERTAINTIES IN THE MODELLING ASSUMPTIONS AND IN THE VALUES OF PHYSICAL PARAMETERS. 3. ASSIST CAP SCIENTIFIC LTD. TO COMPARE SAFETY ASSESSMENTS BASED UPON PROBALISTIC AND DETERMINISTIC CALCULATIONS. Campo scientifico engineering and technologyenvironmental engineeringwaste managementnatural scienceschemical sciencesnuclear chemistryradiation chemistry Programma(i) FP1-RADWASTOM 3C - Research and development programme (Euratom) on the management and storage of radioactive waste, 1985-1989 Argomento(i) Data not available Invito a presentare proposte Data not available Meccanismo di finanziamento CSC - Cost-sharing contracts Coordinatore United Kingdom Atomic Energy Authority Contributo UE Nessun dato Indirizzo 353,Harwell OX11 0RA Didcot - Oxfordshire Regno Unito Mostra sulla mappa Costo totale Nessun dato