Evaluation of the effect on the prevention of uranium dioxide powder adhesion on substrate using nanoparticle coating

Segawa, Tomoomi ; Kawaguchi, Koichi  ; Ishii, Katsunori ; Suzuki, Masahiro ; Satone, Hiroshi*; Suzuki, Michitaka*

To reduce the hold-up of the nuclear material in the glove box and the external exposure dose, the development of the technology of the powder adhesion prevention by the nanoparticle coating to the glove box component has been proceed. The adhesion between the uranium dioxide particles and the substrates of the acrylic, stainless steel and hypalon rubber, which was coated with nanoparticles using a silica nanoparticle-containing hydrophobic modifier was measured and evaluated. In the case of an acrylic substrate, it was found that the application of the coating significantly reduces the lower limit of the particle-substrate adhesion to about one tenth, and the adhesion preventing effect of the uranium dioxide powder can be obtained. This method is considered to be effective for the reduction of the hold-up of the nuclear material in the glove box and the external exposure dose.