A systematic selection of counter operation procedures in an unexpected situation

Akio Gofuku, Mengchu Song

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


The tasks of operators in an emergency situation are to identify the event, plan a counter measure to minimize the influence of the event and control the plant condition to become a normal one. If the event is supposed, operators can focus on selecting a suitable counter operation procedure from emergency operation procedures, severe accident management guidelines, etc. and following the selected procedure to settle the event. However, if the event is not included in a list of supposed events, operators should set a goal of counter measure and plan a suitable counter operation procedure by themselves. The authors propose a technique to generate plausible counter operation procedures based on a functional model and its applicability is demonstrated by some case studies. However, there remain some topics to be challenged. The selection of suitable counter operation procedure is one of the topics. This is usually conducted by the consideration of system, material, human, and information resources. System resources include devices and systems used for counter operations. Material resources include water to cool reactor systems and electricity and fuels to work devices and systems. Human resources include staffs and their skills and supplemental personnel dispatched. This paper proposes a systematic selection technique of counter operation procedures by especially considering system and material resources. The applicability of the proposed selection technique is demonstrated by a case study of an accidental situation.
Original languageEnglish
Title of host publicationProceedings of 30th International Conference on Nuclear Engineering
PublisherThe American Society of Mechanical Engineers (ASME)
Publication date2023
ISBN (Print)9784888982566
Publication statusPublished - 2023
Event30th International Conference on Nuclear Engineering - Kyoto International Conference Center, Kyoto, Japan
Duration: 21 May 202326 May 2023


Conference30th International Conference on Nuclear Engineering
LocationKyoto International Conference Center


  • Counter operation
  • Material resource
  • Operator support
  • Unexpected situation


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