A Study on a Cognitive Behavioral Model for Maintenance Workers When Using Procedure Manuals

Abstract

In industry plants, maintenance workers generally work using procedure manuals. To deal with maintenance problems in domestic nuclear power plants, the major factors related to preparing the procedure manuals should be identified, and improvement of the procedure manuals themselves should be undertaken, but no concrete improvement approaches have been proposed. Therefore, in order to explore concrete ways of improving the procedure manuals, we proposed a cognitive behavioral model when maintenance workers are using procedure manuals. In studying this model, we used the FRAM (functional resonance analysis method) to organize the information necessary for the procedure manuals and we extracted problems on the expression form of that information. In order to confirm the validity of the model, we carried out a basic experiment with a LEGO block assembly by a maintenance worker. In the experiment, we prepared two types of LEGO blocks, blocks with a meaningless form and blocks for an automobile form, and five kinds of procedure manuals. From the experimental results, we obtained useful knowledge about the occurrence numbers of human errors and procedure manuals.