Abstract
In main control rooms of nuclear power plants (NPPs), operators often have to frequently switch their attention between alarm displays and system information displays to incorporate information from different screens. In this study, we proposed the idea of integrating system information into alarm displays. A bar-based integrated design of alarm display was proposed, and it was compared against a tile-based integrated design, and a traditional separate design through a lab experiment. To verify the idea of integration, forty-eight participants were randomly assigned to the three integration conditions to perform basic alarm response tasks, and their situation awareness levels and subjective evaluations were collected. The results indicated that the participants preferred the idea of integrating system information into alarm displays. Besides, the bar-based integrated display supported higher correct rate of answers to situation awareness questions related to the developing scenario than the tile-based integrated design. The idea of integrating system information into alarm displays merits further research and may be applicable to other safety–critical industries.
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