Abstract
This paper describes an automatic decision support system for preventive maintenance planning of sewage pipe networks combined with the Analytic Hierarchy Process (AHP) model based on the weights and consistency indices (CI). It will be able to make a priority of the optimal combination of the inspection/diagnosis methods to be applied and the deteriorating conditions/locations inside the pipe automatically on the system. The proposed system with a database sub-system that was developed for a sewage pipe networks in Ube City area as a specific example has been applied for a comparison of the results of applying the system with the results from domain expert in Ube City office. As a result, it can be predicted accurately with some alternative plans using the system.
