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某炼油厂3号三万米~3浮顶原油罐施工,遇上特大暴雨,造成一次浮顶失稳破坏。经采用较简便的方法修复,使浮顶恢复原貌,自1980年前原油罐投运以来,浮顶升降良好,罐使用性能正常。一、失稳破坏的发生大型浮顶罐结构的特点是有一个大顶。因此,浮顶罐施工时,广泛采用水浮法组装,尤其是采用水浮倒装法,更加显示出它的优越性。但是,因施工程序关系,中央排水管等单盘上的开孔,均须待罐壁组焊后,浮顶架起方能组装。而3号原油罐采用水浮倒装法施工,在浮顶架起单盘开孔之前时,碰上罕见的大暴
A refinery on the 3rd 30,000 ~ 3 floating roof crude oil tank construction, in case of heavy rainfall, resulting in a floating roof instability damage. After the adoption of a more convenient method of repair, the floating roof to restore the original appearance, since the crude oil tank put into operation in 1980, the floating roof lift well, the tank performance is normal. First, the occurrence of instability damage Large floating roof tank structure is characterized by a big top. Therefore, the floating roof tank construction, the widespread use of water float assembly, especially the use of water floating flip method, more shows its superiority. However, due to the construction procedure, the openings on the single-plate such as the central drain pipe shall be assembled after the tank wall welding is completed. While the No. 3 crude oil tank construction using floating method, the floating roof rack from a single plate before the opening hole, hit a rare storm