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Abstract

The embedding of spent fuel hulls and dissolution residues requires an extremely corrosion-, leach-, and radiation resistant, as well as mechanically and thermally stable, matrix material. With due regard to these requirements five materials were selected for technical scale tests: - graphite - sulfur (80 w/o graphite, 20 w/o sulfur), - graphite - nickel sulfide (43.7 w-% graphite, 41,3 w-% nickel, 15 w-% sulfur), - aluminium (99.99 w-% Al), - AlSil2 alloy (85 w-% Al, 12 w-% Si), and - AlMg-3Si alloy (94 w-% Al, 3 w-% Mg, 1 w-% Si). On account of the fabrication process, the core loading, the physical properties and the leach and corrosion resistance graphite - sulfur and Al 99.99 were judged to be the most promising embedding materials for hulls and dissolution residues. Both materials have been selected for further research and development activities with high level waste.

Additional information

Authors: SCHMIDT HANSBERG TH NUKEM GMBH, HANAU (GERMANY), NUKEM GMBH, HANAU (GERMANY)
Bibliographic Reference: EUR 10384 DE (1986) MF, 35 P., BFR 150, BLOW-UP COPY BFR 200, EUROFFICE, LUXEMBOURG, POB 1003
Availability: Can be ordered online
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