Abstract
The dynamic behavior of a 1,000 MW th sodium-cooled oxide-fuel fast breeder reactor was analyzed. To determine the stability of fast reactors, a new analytical model was introduced. The transfer function of EBR-I Mark IV calculated therewith agreed closely with experimental data, and the stability study on the model case was carried out with this model. The present analysis was extended to cover such accidents as reactivity insertion, coolant flow coast down and loss of coolant flow, which are commonly considered in fast reactor safety analysis, and further, the influence of changes in reactivity coefficients upon the consequences of such accidents was also surveyed. The results indicated no appearance of instability in large fast reactors under credible conditions, and that fuel center melting should occur prior to sodium boiling in the case of a reactivity insertion accident, when the Doppler coefficient should have great influence, in contrast to the sodium coefficient, whose effect should be small. It...
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call