As industrial plants and factories age, their maintenance requirements increase. Because maintenance mistakes directly increase the operating costs of a power plant, maintenance quality is of significant concern to plant management. By law, all personnel working with nuclear technology must be re-trained every three years; however, as the statistical data show, the number of shutdown accidents at nuclear power plants (NPPs) due to maintenance failure is still high and needs to be reduced.
Industries have started to adopt various technologies to increase the speed and accuracy of maintenance. Among those technologies, augmented reality (AR) is the latest multimedia presentation technology to be applied to plant maintenance, and it offers superior intuitiveness and user interactivity over other conventional multimedia.
The objectives of this empirical study are to measure the optimum amounts of information to be delivered at a time and to identify what types of information enhance the learning ability of novices and to suggest heuristic guidelines by which to make effective AR training instructions. In addition, AR training instructions will be composed based on the suggested heuristic guidelines and on the Cognitive Theory of Multimedia Learning, which provides guidelines for multimedia instructions, and the efficiency of those guidelines will be compared with that of other AR instructions.
Cognitive Load Theory addresses how working memory is structured. Intrinsic cognitive load refers to the cognitive load that is inherent in information to be learned. It depends on the basic amount of processing required for understanding a presentation. Intrinsic cognitive load is determined by the complexity of the learning material. Extraneous cognitive load refers to the cognitive load created through the presentation, format and delivery of the instruction. Germane cognitive load is the remaining part of the cognitive load, and it helps the learner transfer informa...