DEVELOPMENT OF A COMPUTER-BASED WORK INSTRUCTION TOOL FOR MAINTENANCE WORKERS IN NUCLEAR POWER PLANTS

摘要

In Japan, maintenance works for nuclear power plants have been achieved by skills andknowledge of experienced field workers. Retirement of aged maintenance workers and shortage ofhands are expected to decrease the efficiency of maintenance works in the future. One ofapproaches to securing the efficiency of maintenance works is the sophistication of workprocedures instruction of maintenance team leaders. With team leaders’ sophisticated workprocedures instruction powered by appropriate contents, timing, and media, even novicemaintenance workers who do not have sufficient experiences and skills should be able to conducttheir work precisely and efficiently.In this study, the authors developed a prototype of a computer-based work proceduresinstruction tool for maintenance team leaders to use in Tool Box Meeting (TBM) that takes placebefore the starting of field work, and evaluated the acceptability of the tool with the cooperation ofactual maintenance teams. Multimedia contents and the large touch display of the prototype are formaintenance team leaders to explain schedules, work procedures, and workers placement whileinteracting with team members. The authors got the maintenance teams to try the functions of theprototype, and conducted interviews with the team leaders and members to understand theirexisting work flow and define requirements for the work procedures instruction tool.The results of the evaluation shows that the use of multimedia for work proceduresinstruction will be effective; and that the fitness of the tool for the existing work flow will besignificant. With the results, Hitachi continues the development of the work procedures instructiontool, mainly focusing on the improvement of the interfaces for explaining work procedures andpreparing for TBM.