Corrosion risk assessment of gas pipeline network in Suzhou Industrial Park

Through a case study to the gas pipeline network of Suzhou Industrial Park, a corrosion risk assessment model of gas pipeline network was established in combination with the risk assessment theory to assess the corrosion risk of the gas pipeline network in the industrial park. The assessment model adopted the fuzzy comprehensive evaluation method based on the improved AHP. By establishing the corrosion risk index system of gas pipeline network, the weight of each index was determined with the improved AHP method, the corrosion risk assessment level was established with the fuzzy comprehensive evaluation method, and finally the risk level of each pipeline section in the industrial park was solved. Excavation inspection was conducted for six gas pipelines in Suzhou Industrial Park randomly selected to judge the corrosion status of the pipeline, and the inspection results were compared with the evaluation results. The results show that the corrosion risk model can accurately assess the risk status of the gas pipeline network, and it is of some significance to improve the early warning and management level of the corrosion risk of city gas pipelines.