某丙烯球罐底部人孔螺栓失效分析

Failure Analysis of a Spherical Tank Manhole Bolt

某石化企业一台容积400m3球罐,操作介质为液态丙烯,该球罐下人孔螺栓发生断裂失效。丙烯属甲类可燃液化气体,人孔螺栓失效极易造成罐内液体泄漏,引起人员中毒、火灾事故,并造成环境污染。为了尽可能的预防此类风险发生,本文对人孔螺栓开展失效分析工作。

There is a volume of 400m3 spherical tank using liquid propylene as its working medium. One of manhole bolt under the spherical tank occurred fracture failure. Propylene is a kind of combustible liquefied gas. Manhole bolt failure is easily to cause tank liquid leakage, poisoning, fire accidents, and environmental pollution. This paper analyzed the reason of the manhole bolt's failure to prevent this risk happen again.