Results of the system analysis dual-purpose repository

The Gorleben salt dome in northern Germany is being explored so that its suitability to host a mined repository for heat-generating waste can be determined by the beginning of next century. While the disposal concept considered since the beginning of repository planning has been dealing only with reprocessing waste and 300-m-deep boreholes, current studies include both reprocessing waste and spent fuel with 300-m-boreholes as well as horizontal drifts as the basic components of the emplacement concepts. A substantial number of disposal concepts including above-ground waste treatment and cask alternatives have been designed and evaluated by means of a host of selection criteria belonging to seven different criteria fields. By this evaluation it is not only recommended to further pursue the joint borehole and drift concept (BD1) as well as drift concepts that include advanced ILW treatment but it is also identified which areas require additional R ampersand D. 2 refs., 6 figs., 4 tabs