核燃料取扱施設のアズビルト化に向けた3Dスキャン測定および照合評価手法

Consideration of 3D laser scanning and verification techniques for as-built modeling in nuclear fuel cycle facilities

大久保 尚登; 小川 剛; 浅田 衛*; 福島 学*; 中島 優子*; 照沼 浩明*; 高谷 暁和; 中崎 和寿; 山本 昌彦   

Okubo, Naoto; Ogawa, Tsuyoshi; Asada, Mamoru*; Fukushima, Manabu*; Nakajima, Yuko*; Terunuma, Hiroaki*; Takaya, Akikazu; Nakazaki, Katsutoshi; Yamamoto, Masahiko

近年、3Dレーザースキャナーを用いた施設のアズビルト化等が注目されている。本検討では、ステンレス鋼や複雑な構造で配管等が配置されている核燃料取扱施設における3Dレーザースキャナーによる測定方法を考案し、点群データを取得してアズビルト化を試みた。測定結果は、設計図との照合を通じ、現況を把握した。本測定法による施設の3Dアズビルト化については、廃止措置における計画立案・調整等への展開が期待できる。

Application of 3D laser scanning for as-built modeling has recently attracted increasing attention. This study investigates scanning techniques suitable for complex environments such as nuclear fuel cycle facilities. These facilities commonly use stainless steel components, which highly reflect optical laser scanning and features complicated arrange of piping and equipment. To ensure data accuracy under such challenging conditions, techniques including multi-angle scanning and noise reduction were employed. The obtained data were compared with facility's original design data. The results indicated that the proposed approach enables high-quality data acquisition and facilitates the generation of accurate 3D point cloud data, even in geometrically and optically complex environments. The resulting 3D point cloud data contribute to a comprehensive understanding of facilities and are expected to support work planning processes throughout facility decommissioning.