Abstract
In machine maintenance etc, it is necessary for workers to communicate with each other the information about the accident and the condition of machines, and about the presence areas of themselves. In addition, the operation manual and the task risk is the important information highly required for the workers to perform the tasks safely. Although the communication error becomes one of the cause of an accident, it is not recognized as a risk in the risk assessment method. However, it is evident that 64.3% cases of the fatal accidents are caused by accidents related to communication error according to the analysis to 129 cases of fatal accidents of caused by industrial machines. In this paper, the necessity of recognizing the communication error as risk factors is discussed, and the communication system for workers is proposed as a risk reduction method.
