Development of measurement techniques for density and liquid level of molten salt to assess an inventory in equipment of Pyro-proccesing

Fukushima, Mineo; Nagai, Takayuki  ; Kikuchi, Kotaro*; Hirano, Hiroyasu ; Myochin, Munetaka

Measurement techniques for density and liquid level of molten salt are very important elements in material accountancy system for pyro-processing and also in process control system. Test equipments were developed for the in-situ measurement of density and liquid level of molten salt and provided to the measurement experiments. Measurement of the density of LiCl-KCl eutectic showed a good agreement with published data in an error of 0.2%. Measurement of the liquid level of LiCl-KCl eutectic showed an error of 0.5 mm against theoretical values. From these results, both techniques were considered to be promising although the additional data accumulation is needed to estimate the performance statistically by using practical equipment.