By means of a separately installed crane they will be put into shielded containers ready for final disposal. From the 600 m 3 of waste approximately 3000 drums will be produced. Most of the drums have to undergo a drying step prior to transport to Morsleben. The dose commitment for the staff is calculated as approximately 100 man-mSv. Wastes were collected and stored in a special building in an underground stainless steel storage tanks each with a capacity of 500 m 3 in volume and 13 m in diameter.
Wastes have to be withdrawn as soon as possible due to the potential danger of leakage.
Inside the above mentioned building, a automatically operated mobile drying unit, a decanter centrifuge of Alpha level type, was installed. By means of this rack-mounted installation, solid particles down to 1 mm diameter together with the main amount of undissolved activity will be separated from the liquid phase. For intermediate storage and for final storage at Morsleben repository, they have to be shielded by outside concrete shieldings. Decantates containing dissolved salts and the remaining activity, will further be treated in existing NPP installations. For mixing of sediments and removal from the tanks, a specially designed reusable process module is temporarily installed in either storage tank.