Some Calculational Results for Transmutation of Plutonium and Wastes in Blankets of Accelerator-Based Systems

Abstract

Some calculational results of transmutation processes for 4 models of blanket in accelerator-based system are presented: 1,2, incineration of weapons plutonium and transmutation of Tc-99 in heavy-water blanket with pressurized CANDU-type tubes, with two different plutonium loadings. Tc-99 is dissolved in heavywater moderator and continuously extracted for keeping the necessary level of subcriticality; 3. two-stage transmutation of Np-237 in a high-flux heavy-water blanket with Np-238 fissions involved. The necessary level of subcriticality is provided by plutonium he1 burning in the neighbor zone; 4. sodium-cooled blanket for Np-237 transmutation on the basis of its threshold fast neutron fission reactions and for plutonium transmutation.