一、故障调查 长岭炼油化工总厂油港处的8号、9号1×10~4m~3外浮顶油罐同时设计施工,结构完全相同,投用时间分别为1997年1月28日和8月9日,运营到1998年11月3日,两座油罐的中央排水管各发生了3次穿孔损坏事故,造成浮顶积油、积水,直接影响了油罐安全运行和生产。 浮顶罐主要技术参数见表1。中央排水管安装 First, the fault investigation Changling Refining and Chemical Plant Oil Port Office No. 8, 9, 1 × 10 ~ 4m ~ 3 floating roof tank at the same time design and construction, the structure is exactly the same, the investment time were January 28, 1997 And August 9, operation to November 3, 1998, the central drain of the two oil tanks each have 3 perforation damage, resulting in the floating oil, water, a direct impact on the safe operation of tanks and production . Floating roof tank main technical parameters in Table 1. Central drain installation