Experimental Studies in CDA Work-Energy Attenuation. Fast Reactor Safety Program Quarterly Technical Progress Report No. 23, 1 July-30 September 1980

摘要

Reported is a complete analysis of experiments on the effect of coolant volatility on simulated HCDAs. Analysis of the experiment series using water, Freon 113, and Freon 11 as coolant simulants has been completed. In the Freon experiments, the upper core and bubble pressures were 50% higher, the expansion work was 25% higher, and the slug impact impulse was 29% higher than in the water experiments. In all experiments without internal structures, the coolant entrainment at slug impact was 20% to 40% of the bubble volume. Internal vessel structures reduced the slug impact impulse by 45% using Freon 113 coolant compared with 56% using water as the coolant. (ERA citation 06:032069)