Analysis and Countermeasures for the Integrity Damage Factors of Underground Gas Pipeline in a Certain City of North China

Abstract

Underground gas pipeline integrity means that the pipeline is always in a fully reliable service state. This paper analyzes the damage of the integrity of underground gas pipelines in a city in North China in recent years, and summarizes the main causes of the integrity damage of gas pipelines. Pipeline corrosion, private modification of pipelines, and third-party damage are the main causes of the integrity damage of the gas pipeline network in a city in North China. Among them, illegal construction of some units and construction of municipal infrastructure are the main sources of third-party damage. In order to effectively protect the integrity of urban underground gas pipelines, this paper has formulated countermeasures based on the actual situation of the city. Combined with the actual situation of a city in North China, the DC potential gradient method and the dense interval potential method were used for corrosion detection. Once the pipeline is found to be corrosive, repairment is carried out immediately. In response to third-party damage issues, the urban management and other law enforcement agencies will be joint to timely supervise and guide the high-risk construction of the third-party site such as drilling in an orderly and safe way. Through supervision, hidden trouble on the pipelines occupation caused by the third-party construction units will be eliminated. Pipeline corrosion inspection should be conducted regularly to check whether the pipeline is aging. By strengthening daily supervision, it can effectively reduce pipeline damage caused by pipeline aging and other reasons. The research in this paper provides reference and guidance for the management and maintenance of underground gas pipeline integrity.