The monitoring approaches and non-destructive testing technologies for sewer pipelines

Abstract

Sewage pipe deterioration has been one of the factors causing huge asset losses and urban hazards worldwide. For more efficient and reliable management, a variety of monitoring and non-destructive testing techniques have been developed for defect inspection and condition assessment of sewer pipes. In the present paper, the monitoring approaches of sewage pipes in the form of operational monitoring, structural monitoring, and durability monitoring are outlined. The fundamentals and features of various NDT techniques for different target detect locations are presented. The stereo vision, LIDAR, and laser 3D scanning technologies that might serve to architect the digital twin of the pipeline were also described. What's more, the capabilities and limitations of these technologies are discussed and summarized in tables. Some possible visions for the development of inspection and quantitative evaluation of sewage pipes are also discussed. In practice, it is suggested that visual inspection techniques are the most feasible for the evaluation of underground pipes. In terms of quantitative and automated evaluation, visual inspection robots equipped with stereo vision or laser 3D scanning technology are the most promising.

The Effect of Microbiologically Induced Concrete Corrosion in Sewer on the Bearing Capacity of Reinforced Concrete Pipes: Full-Scale Experimental Investigation

“…This study provides limited test data, and more experimental and finite element simulation work that aims at linking the material corrosion of sewer pipes with their structural bearing capacity should be conducted in the future. According to the correlation between corrosion losses and structural bearing capacity, the remaining bearing capacity of the in-service sewer could be predicted based on the corrosion depth detected by a pipe penetrating radar [2] or predicted by a corrosion prediction model [35][36][37]. Such results can be used for condition assessment, life prediction, and risk evaluation of sewerage, further suggesting the manager make right decisions on inspection and rehabilitation.…”

“…The ASTM C-497 requires loading at a constant rate up to 75% of the specified design strength, after that the rate of loading should be reduced to 1/3 of the maximum uniform rate. (2) The tested load given in the GB/T-16752 is expressed by linear load in Newtons per meter of length (kN/m), while it is measured by strength in newtons per linear meter of pipe per millimeter of diameter (N/mm/mm) in ASTM C-497.…”

“…Reinforced concrete pipes (RCPs) are precast pipes made of concrete and steel cages, which are widely used for transporting fluids such as drainage effluents, sewage, and sometimes oil or gas [1,2]. When utilized as a structure for sewage systems, they are prone to suffer from microbiologically induced concrete corrosion (MICC) [3].…”

OPC UA Application Study in Oil and Gas Pipeline Network Monitoring Data Forwarding

“…Developing learning algorithms for oil and gas network data, fully utilizing potential data, and accurately assessing network anomalies can effectively reduce financial and human losses for companies(Yajian. Wang et al, 2022). This research has important theoretical and practical implications for detecting potential hazards in underground oil and gas pipelines and preventing and eliminating these hazards at an early stage.…”