再処理施設におけるグローブボックスパネルの更新技術
Replacement of the Glove Box Panel in Nuclear Fuel Reprocessing Facility
著者:
舛井 健司 Kenji MASUI 山本 昌彦 Masahiko YAMAMOTO 久野 剛彦 Takehiko KUNO 駿河谷 直樹 Naoki SURUGAYA
発刊日:
公開日:
Glove BoxIncombustible materialPolycarbonateTransparent panel
概要
In the new regulation formulated after the accident at Fukushima Daiichi Nuclear Power Plant, it is demanded that the glove box consists of incombustible or noncombustible materials. However, combustible acryl materials are used for many glove boxes installed in nuclear fuel cycle facilities. In this work, the glove box acryl panel has been replaced to incombustible material with accordance to the new regulation. The new panels have been manufactured by polycarbonate which satisfied the UL94 V-0 incombustible class. The glove box has been in service for 37 years and its inside has been contaminated with radioactive materials. Thus, the contaminations have been decontaminated before the replacement work. Then, the replacement has been conducted in closed space covering glove box with vinyl sheets to maintain the containment function. The enclosure function of glove box has been verified by the inspection of the new panels after the replacement.
