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Coupled thermal-hydrological-mechanical-chemical processes for application in repository safety assessment

Objective

This proposal aims to develop a scientific methodology for evaluating the capabilities of mathematical models and computer codes used in Performance Assessment and applied to the design, struction, operation, performance and safety assessment, and post-closure monitoring of geological nuclear waste repositories, based on the scientific principles governing coupled thermo-hydro-mechanical and chemical (THMC) processes in geological systems and geo-materials. The project work will be centrated on the most essential issues for PA, with focus on rock salt, buffer materials and the buffer-rock interface, as guided by the tool of Issue Evaluation Tables (IET). The evaluation will be carried out by scientific/technical auditing (TA) procedures. The evaluation will examine the participating teams' codes and approaches in terms of system characterisation (ceptualisation, simplification, mathematical representation and parameterisation), flexibility in handing realistic in-situ geological ditions, capacities in uncertainty source identification and treatment, and computational aspects. The evaluation will be organised around numerical simulations of small-to-moderate scale laboratory tests, specifically defined generic Bench-Mark Tests (BMT), and large-scale in-situ experiments (Test Cases - TC) involving coupled THM, HMC or THMC processes in rock salt and buffer material, so that simulations and evaluations can be ducted within a realistic physical text. This proposed project represents, for the first time, such a coherent and logical effort based on sound scientific principles, and with potentially far-reaching sequences in the field of nuclear waste disposal.

Call for proposal

EURATOM-2005-6-FIXEDDEADLINE
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Coordinator

KUNGLIGA TEKNISKA HOEGSKOLAN
EU contribution
No data
Address
Valhallavaegen 79
STOCKHOLM
Sweden

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Participants (15)