[2C01-03] Analysis, Scinario Evaluation and System Development 1

[2C01] Inspection of storage efficiency and nonproliferation by the dismantling experiment of control rods

Development of a technique preventing B4C diffusion during volume reduction of spent control rods(2)

*Makoto Tatemura¹, Masatoshi Itagaki², Keisuke Kurihara², Serbouti Yassine², Yutaka Kometani² (1. Hitachi, 2. HGNE)

Keywords:Volume reduction, Spent control rods, B4C, Underwater plasma cutting

The purpose of this study is to develop an environmental-friendly and low-cost technique for segmentation of used control rods. The volume reduction of the control rod is performed underwater while preventing B4C powder scattering. The results showed that this technique has a low scattering of B4C powder (0.07%), and a high storage efficiency (50control-rods).