Abstract
An alarm system forms an essential part of the operator interfaces for automatically monitoring the plant state deviations and attracting the plant operator's attention to changes that require his/her intervention. To design an efficient alarm system that helps operators quickly identify the cause of abnormality and response to the situation is a vital work for the safe operation of the plant. In the EEMUA 191 Guide pressed by Engineering Equipment and Materials Users Association (EEMUA), general principles of design and evaluation of plant alarm systems are proposed. Based on this guide, we propose a systematic design approach of the plant alarm system. In the design stage, based on cause-effect analysis, a set of alarm source signals are selected. For alarm system rationalization, we prepare countermeasures against repeating alarm suppression. As for the evaluation of the designed alarm system, we refer to the criteria provided by EEMUA 191 Guide and other indexes such as the malfunction identification time of a human operator model as well. The design methods are applied to the alarm system of a boiler plant simulator as a case study. Evaluation results show the usefulness of the proposed approach.
Published Version
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