A rule-based approach for planning counter-actions with multilevel flow modeling

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Response planning is one of the most important cognitive tasks when operators deal with anomalies in complex process systems such as nuclear power plants. Operators can face great challenges when no existing procedure can address the current plant situations, as referred to the knowledge-based decision making. It is crucial to develop a support system to aid operators in the decision making of planning. The support system is expected to be capable to identify not only essential resources but also executable solutions. Multilevel flow modeling (MFM) is a functional modeling methodology that can describe planning resources in multiple abstraction levels of systems' intentional knowledge in perspective of functions and goals. In this paper, a rule-based approach for planning counter-actions particularly operating procedures with MFM is proposed. In order to implement the model-based planning procedure, new rules for identifying control actions and their conditions are defined in addition to the existing causal reasoning rules for MFM. Action solutions, i.e. operating procedures to counter the abnormal situation can be identified from a tree structure including all desired states and required actions that are inferred from a prescribed goal by using different categories of reasoning rules.

Original languageEnglish
Title of host publicationProceedings of the 27th International Conference on Nuclear Engineering, ICONE 2019 - "Nuclear Power Saves the World!"
PublisherAmerican Society of Mechanical Engineers
Publication date18 May 2019
ISBN (Print)9784888982566
Publication statusPublished - 18 May 2019
Event27th International Conference on Nuclear Engineering: Nuclear Power Saves the World! - Tsukuba, Ibaraki, Japan
Duration: 19 May 201924 May 2019


Conference27th International Conference on Nuclear Engineering: Nuclear Power Saves the World!
CityTsukuba, Ibaraki
SponsorAmerican Society of Mechanical Engineers, Chinese Nuclear Society, Japan Society of Mechanical Engineers, Mitsubishi Heavy Industries, Nuclear Power Institute of China


  • Functional modeling
  • Nuclear power plants
  • Operating procedure synthesis
  • Response planning
  • Rule-based systems


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