Chornobyl NPP (ChNPP) lava fuel-containing materials (LFCM) chemical composition and properties are analysed with emphasis on corrosion resistance. It is shown that LFCM need additional conditioning as changes occur and overall low corrosion resistance. The expedience to vitrify ChNPP LFCM is discussed with an optimal conditioning method which would combine joint vitrification of ChNPP LFCM and dehydrated boron-containing compound using cold crucible melters. Glass corrosion resistance is analysed with focus on alkali-borosilicate glasses typical for nuclear waste immobilization. Technical ability to create installation of lava fuel-containing materials vitrification using f the serial equipment is demonstrated, the main components and systems of such a facility are identified. The diameter of the cold crucible melters and generator power are calculated, it is shown that processing 1200 tons LFCM can be carried out in 5 years.
Keywords: borosilicate glass, lava fuel-containing materials, vitrification, cold crucible melter, Shelter object.
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