Probes for detecting the height of the salt/gas interface or salt/cadmium interface by resistivity measurement have been used in electrorefiner

10.28 Percentage deviation of predicted salt volume relative to measured salt volume.

experiments. The mass of the salt inventory in the electrorefiner was obtained from the product of the fluid volume measured by level probes and the density, assuming additive volumes. Figure 10.28 shows a time plot comparing the predicted salt volume with the measured salt volume of an electrorefiner in INL. For the Mark IV electrorefiner, the average percent­age deviation of the predicted salt volume relative to the measured salt volume was reported to be 0.18% with a standard deviation of 1.26%, while it was 0.04% with a standard deviation of 1.25% for the Mark V electrore­finer (Vaden, 2007). This indicates that calculating the salt density via addi­tive volumes is a satisfactory method.