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《一起浮顶油罐的沉顶事故》(见本刊1982年第5期)写得很好,特别是该文把重点放在吸取教训改进今后设计、施工及操作上是十分正确的。本着同样的目的,本文拟补充下列意见,供有关方面参考:1.当发现油品从中央排水管向浮顶单盘漏出时,说明中央排水管活接头或管子本身已经漏油,且单问阀也已失效。此时只能停止使用油罐进行检修,更换单向阀并修复活接头或中央排水管。要牢记:中央排水管是保证浮顶安全操作所必需的,绝不能随意盲死,不然浮顶迟早会因雨载过大而沉没。2.中央排水管活接头目前的结构设计
The “Sedimentation of a Floating Roof Tank” (see Issue 5, 1982) is very well written. In particular, it focuses on the lessons learned to improve future design, construction and operation. For the same purpose, the following comments are intended to be supplemented by the following sources for reference: 1. When it is found that oil drains from the central drain to the floating roof, it indicates that the central drain union or the pipe itself has been leaking oil and the single Question valve has also failed. At this point, you can only stop using the tank for overhaul, replace the check valve and repair the union or the central drain. Keep in mind: The central drain is necessary to ensure safe operation of the floating roof, must not blindly die, or sooner or later the floating roof due to excessive rain and sunk. 2. Central drain union current structural design