Ziel
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.
Wissenschaftliches Gebiet
Programm/Programme
Thema/Themen
Data not availableAufforderung zur Vorschlagseinreichung
Data not availableFinanzierungsplan
CSC - Cost-sharing contractsKoordinator
OX11 0RA Didcot - Oxfordshire
Vereinigtes Königreich