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Omi, Koyo; Segawa, Tomoomi; Kawaguchi, Koichi; Ishii, Katsunori; Tokura, Ryoma*; Satone, Hiroshi*; Suzuki, Michitaka*
no journal, ,
To reduce the retention of the nuclear fuel materials in the glove box and the external exposure dose, the technology of the powder adhesion prevention by the nanoparticle coating to the glove box components has been developed. In this study, it was measured and evaluated that the prevention of powder adhesion by using acrylic, polycarbonate and stainless steel test pieces of the glove box components, with the nanoparticle coating method and the concentration of nanoparticles as parameters. Painting, spraying and dipping were examined as the coating method, and the spraying method with the proper workability was selected. Furthermore, since the coverage ratio of the alumina powder on the untreated surface of each test piece is 20% or more, whereas the coverage was reduced to 5% or less on the coating surface, it was found that the high powder adhesion preventing effect can be obtained by the nanoparticle coating.
Nakamichi, Shinya; Tsuchimochi, Ryota; Omi, Koyo; Yamada, Yoshikazu
no journal, ,
no abstracts in English
Hayashizaki, Kohei; Omi, Koyo; Segawa, Tomoomi; Kawaguchi, Koichi; Ishii, Katsunori; Satone, Hiroshi*; Suzuki, Michitaka*
no journal, ,
To reduce the retention of the nuclear fuel materials in the glove box and the external exposure dose, the technology of the powder adhesion prevention by the surface micro-fabrication on the glove box components has been developed. In this study, a stainless steel specimen, which is a glovebox component material, was subjected to surface microfabrication, and measurements and evaluations were carried out concerning adhesion and powder adhesion prevention effects. A stainless steel specimen that was unmachined and several specimens with different surface roughnesses that had been micro-fabricated on their surfaces were used to perform surface roughness and adhesion measurement tests by atomic force microscopy. The average adhesion force tended to decrease as the surface roughness increased. In this study, it was found that surface micro-fabrication of stainless steel had a certain effect on preventing powder adhesion.