The advanced human-machine interface (HMI) in nuclear power plants provides an information environment that supports the operators' burdensome cognitive tasks. Safety function status check (SFSC), one of such task...
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The advanced human-machine interface (HMI) in nuclear power plants provides an information environment that supports the operators' burdensome cognitive tasks. Safety function status check (SFSC), one of such tasks, can benefit from well-designed information aid. This paper describes an interface design for supporting the operator's SFSC task as an element of HMI for Advanced Power Reactor 1400 (APR1400) of Korea. A prototype interface scheme for the SFSC task was developed based on the task analysis on APR1400 HMI and an evaluation of existing plants. The interface consists of three hierarchical levels of information: the goal tree including safety functions and their success paths, the flow structure of the success paths, and the system's topological structures related to the success paths. The interface is expected to have advantages in terms of cognitive information processing, which are currently being verified through systematic evaluations under diverse contexts and will be accordingly improved.
In the safety systems review of the Korean nuclear power plants, the Human Factors Program Plan for the OAS (Operator Aiding system) has been executed mainly by an expert review. The reviewers had to integrate all the...
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In the safety systems review of the Korean nuclear power plants, the Human Factors Program Plan for the OAS (Operator Aiding system) has been executed mainly by an expert review. The reviewers had to integrate all the relevant sources of information and make judgement based on their own criteria. Consistency and thoroughness of this process was always in question and a systematic approach to correct these problems was in need, The purpose of this work was to design a methodology for supporting an effective and efficient ergonomic evaluation of the user interface of the GAS. By collecting and systematically structuring all the critical considerations in the human factors review process, an ergonomic evaluation checklist for the CFMS (critical function monitoring system) in an MCR (Main Control Room) was designed and implemented in this study. Application of the developed checklist was used during the licensing review process for the CFMS of the Ulchin unit 3&4. Efficiency and effectiveness of the human factors review process was enhanced significantly with the aid of the integrated checklist and the standardized evaluation format developed in this study.
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