STUDIES RELATED TO PREDICTING COOLANT BEHAVIOR FOR FAST REACTOR SAFETY

摘要

The conclusions reached in this study are as follows:n1. Attractive economics and good breeding characteristics (breeding ratios from 1.27 to 1.42) can be achieved in steam-cooled Pu02-U02 fueled fast reactors. Low capital costs are obtained by virtue of a compact reactor core and the absence of large heat exchangers and complicated process systems.n2. The reactor designs considered can be prevented from going prompt critical, when fully flooded, by incorporating a tolerable amount of high resonance absorption materials such as hafnium, indium, or others. An increase in reactivity upon loss of coolant is indicated according to preliminary calculations. Additional studies are required to check these calculations and determine the effect on reactor safety.