予兆監視システム（SIAT）が検出した通常と異なるパラメータ挙動の発生原因を推定する機能の開発
概要
System Invariant Analysis Technology, SIAT can detect abnormal behavior of plant parameters. However, the cause analysis functionality for the abnormal behavior has been strongly desired to support engineers making decisions for taking appropriate actions. For that purpose, we have developed the cause analysis functionality based on the result of the broken invariant analysis. Database of the broken invariant distribution with that cause is prepared and the similarity with the current abnormal behavior of the plant parameters are evaluated.
