Study On Integrity Management And Maintenance Of Oil Pipeline In Jiujiang To Nanchang

Oil and gas pipeline transportation has become one of the major mode of transportation,but with the increase of pipeline use fixed number of year,due to damage,such as corrosion,stiletto steal oil more and more safety problems have been revealed.In the event of an accident,it is easy to pollute the water source and the environment,causing heavy casualties and major economic losses.The pipeline integrity management system is used to manage the pipeline,prevent accidents and provide reasonable maintenance.This article is a research on the integrity management and maintenance of the product pipeline of Jiujiang to Nanchang.In this paper,the pipeline integrity management system contains six major parts,as well as the commonly used technologies for internal inspection of pipelines,and focuses on the principle and structure of magnetic flux leakage detection.Taking the Jiujiang-Nanchang oil product pipeline as the research object,in-pipe testing including pull test,pigging,deformation detection,corrosion detection,and excavation verification was conducted to obtain data such as metal loss,manufacturing defects,weld anomaly,and deformation defects.The metal loss data is used to perform pipeline integrity evaluation including residual strength evaluation,metal loss rate calculation,and remaining life prediction.Finally,different repair and maintenance methods are provided for the types of pipeline defects.A total of 4576 pieces of pipeline defect data were obtained in this paper.Through the residual strength evaluation,all the metal losses of the pipeline are within an acceptable range.Through the calculation of the loss rate and the prediction of the remaining life,all the metal losses need not be repaired within 5 years.