Development of Water Chemistry Diagnostic System for BWRs Using Fuzzy Reasoning.

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概要

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• A diagnostic system for BWR water chemistry has been developed incorporating high-speed fuzzy reasoning, holding in view preventive maintenance as principal objective.<BR>The system combines two expert systems-one for detecting an anomaly in the plant operating condition and quickly inferring its cause in a preliminary analysis, and the other performing a detailed diagnosis of the detected anomaly.<BR>The system for anomaly detection and quick preliminary diagnosis infers the occurrence of various anomalies and their causes from the fuzzy relation existing between the fuzzy causes and symptoms, applying a high-speed method for solving the inverse problem of fuzzy correspondence. The system can be run on a small size computer, and is thus conveniently adapted to practical application at machine side.<BR>The system for detailed diagnosis incorporates the expertise of water chemistry engineers, and outputs pertinent information and data to guide operators.<BR>Trial application of the system using data from actual plant operation conclusively demonstrated its effectiveness as a practical preventive maintenance system for actual plants.

著者

• HAYASHI YOICHI

  Department of Hepato-Biliary-Pancreatic and Pediatric Surgery, Saitama Medical Center, Saitama Medic

• IGARASHI Hiroo

  Nuclear Power Plant Engineering Department, Hitachi Engineering Co.

• SAKATA Masateru

  System Research Laboratory, Hitachi Engineering Co., Ltd.

• KOYA Hiroshi

  System Research Laboratory, Hitachi Engineering Co., Ltd.

• FUKUMOTO Toshihiko

  Nuclear Power Plant Engineering Department, Hitachi Engineering Co., Ltd.

• HAYASHI Yoichi

  Department of Computer and Information Sciences, Ibaraki University

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• Development of Water Chemistry Diagnostic System for BWRs Using Fuzzy Reasoning.

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