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Lee, Seung Jun
Nuclear Safety Assessment and Plant HMI Evolution Lab.
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Concept of an Intelligent Operator Support System for Initial Emergency Responses in Nuclear Power Plants

Author(s)
Kang, Jung SungLee, Seung Jun
Issued Date
2022-07
DOI
10.1016/j.net.2022.02.010
URI
https://scholarworks.unist.ac.kr/handle/201301/57252
Citation
NUCLEAR ENGINEERING AND TECHNOLOGY, v.54, no.7, pp.2453 - 2466
Abstract
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.
Publisher
한국원자력학회
ISSN
1738-5733
Keyword (Author)
Computerized procedure systemEmergency operationMultilevel flow modelingNuclear power plantOperator support system

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