关键词: 烃类管道, 带压包焊, 在线施焊, 风险控制

Abstract: Leakage of hydrocarbon pipelines requires on-line welding operations when energy isolation and release are impossible and the risk is controllable. On-line welding of hydrocarbon pipelines is of great risk, therefore, a series of risk control measures need to be implemented. Whether the pipeline has the conditions for on-line welding is certainly the key to prevent uncontrollable events during the operation, especially in the calculation of on-line welding pipelines pressure-resistance under actual wall thickness.

Key words: hydrocarbon pipeline, repair welding with pressure, on-line welding, risk control