Conditioning of waste hull and structure material by high-pressure compaction
Safety problems as well as considerable costs arise from the geological disposal of high-volume hull waste in drums set in concrete. For this reason the KfK has been developing a compacted, non-cemented waste product form suitable for storage in an HLW container and able to withstand temperatures of 200 C. The alternative method chosen was cold compaction of the hulls with a hydraulic press, after which they are packed in gastight COGEMA HLW containers. The project concentrated on establishing the product manufacturing technique and the main process installations. A horizontal four-cylinder press with maximum 25 MN force was selected, having a modular, open design and constructed of light components, thus enabling remote maintenance to be carried out. Heating of surrounding rock by Co-60 precludes storage of the alternative hull waste product in the projected KONRAD disposal site, but the nuclear thermal power of a filled container is up to 60 times lower than that of a vitrified HLW container. This thermally stable product can thus help to reduce thermal output in a salt borehole at the projected Gorleben site. Depending on the filling, production will cost some 1.6 to 2.3 million DM per annum.
Bibliographic Reference: EUR 13256 DE (1991) 58 pp., FS, ECU 6.25
ISBN: ISBN 92-826-2335-1
Record Number: 199110300 / Last updated on: 1994-12-02
Original language: de
Available languages: de