[en] Sulzer-Escher Wyss has been working for more than ten years on the development of special turbocompressors for uranium enrichment to yield reactor fuels. The nuclear agreement between Brazil and the Federal Republic of Germany provides for the enrichment of natural uranium by the separation nozzle process. The development work was accomplished in collaboration with the Nuclear Process Engineering Institute, Karlsruhe (Federal Republic of Germany), the STEAG energy concern as industrial architects and Nuclebras together with its affiliated companies (Brazil). (Auth.)