... Abstract: The Prototype Repository at Äspö Hard Rock Laboratory is a large-scale experiment aimed at assessing the response of the rock mass and engineered barriers in a nuclear waste repository to changes in thermal, mechanical and hydraulic condi-tions. This paper describes the thermal...

... are analysed concerning the Swedish KBS3 concept and its realization in Aspo prototype repository and a concept of underground interim storage Skalka in the Czech Republic. We shall discuss the formulation, numerical methods, computer implementation and describe some computed results and computing experience...