CONDITIONING OF CLADDING WASTE BY PRESS COMPACTION AND ENCAPSULATION IN LOW MELTING METAL ALLOYS
The wetting of waste components by lead and zinc based alloys has been examined. The lead based metals, either low or high alloyed, did not achieve acceptable wetting of fresh or oxidized zircaloy surfaces in the temperature range of 350 degrees C to 550 degrees C for exposure times up to 5 hours. The corrosion resistance of candidate embedment alloys on the basis of lead and zinc has been examined in two synthetic interstitial clay waters, in direct contact with the clay, in a synthetic Asse brine solution and in contact with wet salt deposits. A unit compaction and embedment of active hulls at the scale of 50 to 100 g has been constructed and installed in a shielded cell. The compaction of irradiated hulls necessitates the use of slightly higher pressures to achieve the densification factor reached for inactive zircaloy. Batches of zircaloy and of stainless steel hulls have been compacted and embedded in lead alloys for leaching experiments using the natural water present in the Boom clay geological formation. A 3 meganewton compaction press has been installed in a mock-up shielded facility and its operation and maintenance by remote handling with telemanipulators has been studied.
Bibliographic Reference: EUR 9670 EN (1985) FS, 85 P., BFR 300, EUROFFICE, LUXEMBOURG, POB 1003
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Record Number: 1989123062000 / Last updated on: 1987-01-01
Available languages: en