Development for Prediction Model for Environmental Condition of Deterioration Phenomena for Asset Integrity Management

Abstract

The occurrence and progress of a deterioration phenomenon in a chemical plant is determined by the construction material, the plant physical structure and the physical and chemical environmental condition. In order to ensure and maintain the reliability of the facility during operation, the environmental condition such as the concentration of the deterioration substances at the deterioration site should be managed. In this study, we propose an approach to develop a prediction model for physical and chemical environmental condition of deterioration phenomena consistent with the plant operation. The prediction model is composed of the three layers; the process information management layer, the process bulk simulation layer, and the microscopic environmental condition prediction layer. By integrating abovementioned three layers based on the observability and measurable nature of the interfacial variables, it becomes possible to synthesize multi-scale simulation- based environment to predict the environmental condition of deterioration phenomena.