This paper emphatically describes a leaking accident process of propylene highway tanks, physic-chemical nature of propylene, survey of leaking location, clamp design, special tools and online leak sealing operation skills.

• 摘要介绍了某丙烯罐式汽车泄漏事故经过、丙烯的物理化学性质、泄漏部位勘测、夹具设计、工具准备、带压堵漏操作技巧。