An installation for low and medium active waste (ALMA). The report on complementary and preliminary investigations

The report presents complimentary data which show that transportation by sea of low and medium level waste can take place in a way to ensure safety. This also is valid for the final disposal. The waste emanates from the nuclear power plants. The cost of the disposal siting for 125 000 m3 waste will be between 275 and 400 million Skr which is equivalent to 0.015 to 0.02 oere per kWh. The installation is to lie 50 to 300 m below the surface level. Lesser requirements may reduce the costs by 50 percent. The waste would be surrounded by 70 cm concrete and 1.5 m moraine/bentonite. The barrier may have a simplified construction. The amount and form of waste works upon the choice of alternatives. New methods of waste treatment may reduce the volume. The rock which is in the immediate vicinity of the storage should be relatively dense with no adjacent well-digging. (G.B.)