Urban Buried Gas Pipeline Inspection Technology Based on the Risk Assessment

At present,buried gas pipelines many cities at home generally have led to such problems as aging,corrosion and leakage.So,there is an urgent need of urban buried gas pipeline inspection technology based on risk assessments.This paper firstly presents the overall scheme of pipeline risk assessmet,then analyzes which parts of the pipeline need in-situ inspection in the risk assessment of the pipeline,and assesses the risk of the completed on-site inspection pipe from two aspects of pipeline failure probability and pipeline failure consequence.Finally it obtains city buried gas pipeline inspection technology based on the risk assessment,which will play an important role in actual inspections and have a good application prospect.