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08 kuehnlenz kosina project

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Sandia National Laboratories: Energy & Climate: Renewables
Sandia National Laboratories: Energy & Climate: Renewables

The KOSINA project was launched in 2015 by the German government to investigate bedded salt formations as a potential host rock for a nuclear waste repository. The project developed generic 3D geological models of two types of bedded salt formations - flat-bedded and salt pillow. These models incorporated available geological data on German salt formations and minimum requirements for depth and thickness of geological barriers. Based on the 3D models, the project defined two technical repository designs for flat-bedded salt and two for salt pillow. Results from the KOSINA project provide a basis for evaluating the safety of repository systems in different host rocks according to German regulations.

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First Results of the KOSINA-Project: Technical Concepts, Geological Models and Numerical Modeling Tatjana Kühnlenz & KOSINA-Team 7th US/German Workshop on Salt Repository Research, Design and Operation Washington, DC September 7-9, 2016 ABSTRACT In 2013 the German Government restarted the siting process for a HRW repository in Germany. The evaluation of all types of host rocks based on actual geological data is one of the most important elements of this process. On behalf of the Federal Ministry for Economic Affairs and Energy (BMWi), the research & development project with the title “Concept development for a generic repository for heat generating waste in bedded salt formations as well as development and review of a safety and safety demonstration concept” (German acronym: KOSINA) was launched in 2015 in order to investigate the host rock bedded salt. The main goal of the project is the development of a technical site-independent concept as well as a safety and safety demonstration concept for a repository for heat generating waste and spent fuel on the basis of generic, geological 3d models. These models were developed for two types of bedded formations: type “flat-bedded salt formation” and type “salt pillow.” All available geological data for bedded salt formations in Germany were evaluated, whereby the first results of the BASAL project (“Distribution and properties of flat-bedded salt formations in Germany;” 2014 – 2019) were included. This data was brought together with the minimum requirements regarding depth and thickness of geological barriers resulting in generic geological profiles, which represented the basis for the geological 3d models. For further characterization of the geomechanical integrity of a repository based on the 3d models, THM numerical calculations will be carried out in the future. Two technical repository designs were provided: drift disposal of POLLUX® casks and horizontal borehole disposal of BSK (BSK-H) for flat-bedded salt formations as well as vertical borehole disposal of steel canisters “BSK” (BSK-V) type and direct disposal of transport and storage casks in short horizontal boreholes for salt pillow. KOSINA project provides a technical-scientific basis for the safety oriented evaluation of repository systems in different host rocks according to the German site selection act and allows comparing safety of repository systems in different host rocks.

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08 kuehnlenz kosina project

  • 1. First Results of the KOSINA-Project: Technical Concepts, Geological Models and Numerical Modeling Tatjana Kühnlenz & KOSINA-Team 7th US/German Workshop on Salt Repository Research, Design and Operation Washington, DC September 7-9, 2016 ABSTRACT In 2013 the German Government restarted the siting process for a HRW repository in Germany. The evaluation of all types of host rocks based on actual geological data is one of the most important elements of this process. On behalf of the Federal Ministry for Economic Affairs and Energy (BMWi), the research & development project with the title “Concept development for a generic repository for heat generating waste in bedded salt formations as well as development and review of a safety and safety demonstration concept” (German acronym: KOSINA) was launched in 2015 in order to investigate the host rock bedded salt. The main goal of the project is the development of a technical site-independent concept as well as a safety and safety demonstration concept for a repository for heat generating waste and spent fuel on the basis of generic, geological 3d models. These models were developed for two types of bedded formations: type “flat-bedded salt formation” and type “salt pillow.” All available geological data for bedded salt formations in Germany were evaluated, whereby the first results of the BASAL project (“Distribution and properties of flat-bedded salt formations in Germany;” 2014 – 2019) were included. This data was brought together with the minimum requirements regarding depth and thickness of geological barriers resulting in generic geological profiles, which represented the basis for the geological 3d models. For further characterization of the geomechanical integrity of a repository based on the 3d models, THM numerical calculations will be carried out in the future. Two technical repository designs were provided: drift disposal of POLLUX® casks and horizontal borehole disposal of BSK (BSK-H) for flat-bedded salt formations as well as vertical borehole disposal of steel canisters “BSK” (BSK-V) type and direct disposal of transport and storage casks in short horizontal boreholes for salt pillow. KOSINA project provides a technical-scientific basis for the safety oriented evaluation of repository systems in different host rocks according to the German site selection act and allows comparing safety of repository systems in different host rocks.