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グラフを用いた点検実施条件抽出手法の開発と点検工程作成への適用

Development of a method for extracting maintenance preconditions by using the graph structure and application to maintenance scheduling

橋立 竜太 ; 近藤 佑樹; 矢田 浩基 ; 高屋 茂  ; 江沼 康弘 

Hashidate, Ryuta; Kondo, Yuki; Yada, Hiroki; Takaya, Shigeru; Enuma, Yasuhiro

点検工程を作成するには、プラントの系統や機器の動作状態を制限する点検実施条件を明確にする必要がある。本研究では、系統や機器間の機能の関係性をグラフ構造で表現することで、点検実施条件を抽出する新しい手法を提案する。また、提案手法と点検工程自動作成手法を連携し、抽出した点検実施条件を用いて、点検工程を自動作成する数理モデルを開発した。最後に、提案手法の有効性を示すために、簡易的なプラントを対象に、手法を適用した結果を報告する。

To construct a maintenance schedule, it is necessary to clarify maintenance preconditions that constrain the operational states of systems and components in the plant. In this study, a new method for extracting maintenance preconditions using graph structures that represent relationship among systems and components was proposed. Then, this proposed method was integrated into the automatic maintenance scheduling program developed by authors. A plant maintenance schedule can be created more efficiently by using this integrated program. Furthermore, plant configuration design issues that caused prolonged maintenance terms can be investigated by using graph structure. This approach was applied to a simplified plant model to demonstrate the effectiveness of the proposed method.

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