Nuclear Engineering and Technology

  • 제54권7호
  • /
  • Pages.2453-2466
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  • 2022
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Concept of an intelligent operator support system for initial emergency responses in nuclear power plants

  • Kang, Jung Sung (Department of Nuclear Engineering, Ulsan National Institute of Science and Technology) ;
  • Lee, Seung Jun (Department of Nuclear Engineering, Ulsan National Institute of Science and Technology)
  • 투고 : 2021.10.15
  • 심사 : 2022.02.09
  • 발행 : 2022.07.25
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초록

Nuclear power plant operators in the main control room are exposed to stressful conditions in emergency situations as immediate and appropriate mitigations are required. While emergency operating procedures (EOPs) provide operators with the appropriate tasks and diagnostic guidelines, EOPs have static properties that make it difficult to reflect the dynamic changes of the plant. Due to this static nature, operator workloads increase because unrelated information must be screened out and numerous displays must be checked to obtain the plant status. Generally, excessive workloads should be reduced because they can lead to human errors that may adversely affect nuclear power plant safety. This paper presents a framework for an operator support system that can substitute the initial responses of the EOPs, or in other words the immediate actions and diagnostic procedures, in the early stages of an emergency. The system assists operators in emergency operations as follows: performing the monitoring tasks in parallel, identifying current risk and latent risk causality, diagnosing the accident, and displaying all information intuitively with a master logic diagram. The risk causalities are analyzed with a functional modeling methodology called multilevel flow modeling. This system is expected to reduce workloads and the time for performing initial emergency response procedures.

키워드

과제정보

This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No.NRF-2018M2B2B1065653). This work was also supported by the Nuclear Safety Research Program through the Korea Foundation of Nuclear Safety (KoFONS) using a financial resource granted by the Nuclear Safety and Security Commission (NSSC) of the Republic of Korea (No. 2106007).

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