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An Approach to Build a Knowledge Base for Reactor Accident Diagnostic Expert System

  • Kazuo Yoshida
  • Toshihiko Aoyagi
  • Yasuhiro Hirota
  • Minoru Fujii
  • Kazuo Fujiki
  • Masao Yokobayashi
  • Atsuo Kohsaka

Abstract

In the development of a rule based expert system, one of key issues is how to acquire knowledge and to build knowledge base (KB). On building the KB of DISKET 1),2), which is an expert system for nuclear reactor accident diagnosis developed in JAERI, several problems have been experienced as follows. To write rules is a time consuming task, and it is difficult to keep the objectivity and consistency of rules as the number of rules increase. Further, certainty factors (CFs) must be often determined according to engineering judgement, i.e. empirically or intuitively. A systematic approach was attempted to handle these difficulties and to build an objective KB efficiently.

Keywords

Certainty Factor Japan Atomic Energy Research Institute Rule Base Expert System Level Hypothesis Reactor Coolant Pump 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Reference

  1. 1).
    Yoshida K., Yokobayashi M., Ayoyagi T., Shinohara Y., Kohsaka A.: Development and Verification of an Accident Diagnostic System for Nuclear Power Plant by using a Simulator, ANS Topical Meeting on Computer Applications for Nuclear Power Plant Operation and Control, Pasco, USA September (1985)Google Scholar
  2. 2).
    Yokobayashi M., Yoshida K., Kohsaka A. and Yamamoto M. Development of Reactor Accident Diagnostic System DISKET using Knowledge Engineering Technique, J,Nucl.Sci,Tech., 23[4], (1986)Google Scholar
  3. 3).
    Fujitsu Co, Ltd.: Software package ANALYST for Statistical Data Processing, FUJITSU 70AR-0800–1 (1982)Google Scholar

Copyright information

© Plenum Press, New York 1988

Authors and Affiliations

  • Kazuo Yoshida
    • 1
  • Toshihiko Aoyagi
    • 2
  • Yasuhiro Hirota
    • 3
  • Minoru Fujii
    • 1
  • Kazuo Fujiki
    • 1
  • Masao Yokobayashi
    • 1
  • Atsuo Kohsaka
    • 1
  1. 1.Department of Reactor Safety ResearchJapan Atomic Energy Research InstituteTokai, IbarakiJapan
  2. 2.Management Administration DepartmentKyushu Railway CompanyFukuokaJapan
  3. 3.Research and Development DepartmentCSK Corp.TokyoJapan

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