Mineral resources engineering vol:11 issue:1 pages:1-16
In a first feasibility study, the possibility was explored to store the high and low to intermediate level radioactive waste of the Netherlands in a clay layer at a depth of 500 m. The study includes a layout for the repository and a schedule of the excavation, storage and closure operations. The proposed design takes the additional constraint into consideration, that the high level waste has to be individual retrievable. The surface area required was estimated at approximately 4 km(2). The total time to excavate the underground facility, to store the waste and to seal off the repository was estimated at approximately 20 years. In a second study, some design parameters were changed, like for example the diameter of the disposal cells and the centre distance between these cells. This resulted in a significant reduction in the required area, but in a reduction of less than 20% on the excavation time.