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Proposal of a novel AI-based plant operator support system for the safety of nuclear power plants

原子力発電所の安全性向上のためのAI技術を活用した革新的運転員支援システムの提案

高屋 茂  ; 関 暁之   ; 吉川 雅紀 ; 佐々木 直人*; Yan, X. 

Takaya, Shigeru; Seki, Akiyuki; Yoshikawa, Masanori; Sasaki, Naoto*; Yan, X.

原子力発電所の安全性向上には、異常時の対応力の強化が重要である。そのためには事前に潜在的なリスクを徹底的に洗い出し、対応策を準備する必要がある。また異常発生時には、運転員は迅速に状況を理解し、適切な対応策を選択しなければならない。本研究では、AI技術を活用して、異常の状況だけでなく、状況に応じた対策案を提示する革新的な運転員支援システムを提案する。提案システムの構成や機能等について、HTTRを例題として説明する。

Enhancing the ability to manage abnormal situations is important for improvement of the safety of nuclear power plants. It is necessary to investigate potential risks thoroughly in advance, and prepare countermeasures against the identified risks. In case of an occurrence of an abnormal situation, plant operators are required to recognize the plant situation promptly and select a suitable countermeasure. This study develops a novel plant operator support system designed not only to estimate details of anomalies in a plant but also propose countermeasures adaptively by employing several AI technologies of deep neural network and reinforcement learning. The design and performance of the proposed system is illustrated using High Temperature engineering Test Reactor operated in Japan Atomic Energy Agency.

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