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Modelling Gas Migration Experiments in Repository

by Karen Worgan, Intera Information Technologies, Denver, United States,
Michael Impey, Intera Information Technologies, Denver, United States,
Geert Volckaert, Intera Information Technologies, Denver, United States,
Peter DePreter, Intera Information Technologies, Denver, United States,



Document Type: Proceeding Paper

Part of: High Level Radioactive Waste Management 1993

Abstract:

In response to concerns over the possibility of hydrogen gas generation within an underground repository for high-level radioactive waste, and its implications for repository safety, a joint European research study (MEGAS) is underway. Its aims are to understand and characterize the behavior of gas migration within an argillacious, host-rock. Laboratory experiments are being carried out by SCK/CEN, BGS and ISMES. SCK/CEN are also conducting in situ experiments at the underground laboratory at Mol, Belgium. Modelling of gas migration is being done in parallel with the experiments, by Intera Information Technologies. A two-phase flow code, TOPAZ, has been developed specifically for this work. In this paper we report on the results of some preliminary calculations performed with TOPAZ, in advance of the in situ experiments.

Subject Headings: Mathematical models | Hydrologic models | Fluid flow | Underground storage | Stratified flow | Standards and codes | Radioactive wastes

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