Abstract
This paper describes the development of the system about Augmented Reality (AR) effectively to prevent human errors in plant operations and maintenance. In this research, we developed the AR system using a image feature points method for plant operation support. By cutting the selected spaces from template pictures, this system tracks the positions of plant operation inside the images captured by a camera. By using this method, operating procedures could be visually displayed on tablet by the images and videos. By performing a demonstration in the actual water purification site, we have been evolved this system. The result shows that the performance of proposed method is useful to prevent human errors in plant operation.