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

乾式再処理機器中のインベントリー評価のための溶融塩密度及び液面位置測定技術の開発

福嶋 峰夫 ; 永井 崇之 ; 菊池 光太郎*; 平野 弘康 ; 明珍 宗孝

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

溶融塩の密度と液位を測定する技術は、乾式再処理の計量管理のみならず工程制御にも重要な要素技術である。工程運転中に溶融塩密度と液位を測定する試験装置を開発し、測定試験を行った。LiCl-KClの密度測定試験の結果、公開文献データとの誤差が$$pm$$0.2%以下と良好な結果を得た。LiCl-KClの液位測定試験の結果、測定誤差は理論値と$$pm$$0.5mm以下と良好な結果だった。これらの結果から、これらの技術は、実機による統計的なデータの蓄積を行うことで実用的な技術となるものと考えられる。

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.

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