Immobilization of cladding waste by press compaction and conditioning for final disposal by encapsulation in a lead container
The research programme proposes an alternative conditioning method for cladding waste. This method is based on cold press compaction of the hulls to about 80% of the theoretical density of zircaloy. The final conditioning consists of encapsulation of the compaction products in a corrosion resistant container. With a view to using clay as a final disposal medium for this kind of waste, a seamless lead containment was chosen as a corrosion barrier. The press compaction technology was further developed on a pilot scale under inactive conditions. The influences of the chop length, of the addition of softer materials (lead or aluminium) and of variations in the compaction procedure were examined. Further, the hot cell infrastructure was finished and the equipment for hot demonstration with 100 kg active hulls from KfK was installed and tested. A TIG welding unit, for the welding of the triple containment stainless steel/lead/stainless steel, was adapted for hot cell conditions and the welding parameters set up. Finally, all the manipulations in the cell were reviewed and checked in simulated active conditions.
Bibliographic Reference: EUR 13066 EN (1990) 46 pp., FS, ECU 5
ISBN: ISBN 92-826-1752-1
Record Number: 199011768 / Last updated on: 1994-12-02
Original language: en
Available languages: en