Thorium loss, calculated

Therefore, if the feed acidity is decreased, the reduction rate should be enhanced and lower Pu losses should be achieved. This was confirmed by experiment where the loss was decreased to 2% Pu at a feed acidity of 0.8 mol/L. The calculated effect of feed acidity on Th and Pu losses from Contactor III is shown in Figure 6. The Pu oxidation model was used in deriving these results. An acidity of less than 0.6 mol/L would apparently be required to limit Pu losses to v 0.1%. At the same time, Th losses to the Pu product stream would be over 10%. Experimentally thorium loss was reduced to acceptable levels by adding a salting agent (NaNC ) to the 3AF and 3AS streams, but this solution unfortunately eliminates one of the major advantages of using HAN as reductant, viz, a decrease in the amount of solid wastes which must be treated. 

Computations have been performed for an ADS consisting of an accelerator coupled to a subcritical fast reactor with thorium/ U fuel and natural convection lead cooling. After introducing a source into the point kinetics module of the EAC2 code, Loss-of-Flow accident calculations for an ADS were performed. 

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