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某油库接收油时,为加快收油速度,用两台泵分别向洞内六号、三号罐同时注油。作业开始后,现场值班员发现六号罐压力已达700Pa(70mmH_2O),紧接着看了三号罐,压力达1.7kPa(170mmH_2O) [罐压不允许超过2kPa(200mmH_2O),正常情况下为200～300Pa(20～30mmH_2O)]。发现上述问题后,立即到洞口开油气管线放水阀,但阀门已冻死失灵(当时气温-28℃)。此时油罐顶已发出嗞嗞的响声。由于发现及时,当即停止了收油作业,才控制了油罐压力的继续上升,避免了一次难以预料的事故。经多方检查,才发现阻火器内已结满霜,局部已成冰,经处理后继续收油,油罐压力恢复了正常。
When a certain oil depot receives oil, in order to speed up the oil receiving rate, use two pumps to inject oil into the holes 6 and 3 respectively. After the start of the operation, the attendant found that the pressure in No. 6 tank reached 700Pa (70mmH_2O), followed by No. 3 tank with a pressure of 1.7kPa (170mmH_2O) [tank pressure not exceeding 2kPa (200mmH_2O) and normally 200 ~ 300Pa (20 ~ 30mmH_2O)]. Found that the above problems, immediately open the hole to the oil and gas pipe drain valve, but the valve has been frozen to death (when the temperature -28 ℃). At this moment, the top of the tank has been squeaking. As a result of the timely and immediate stoppage of oil collection operations, the pressure on tanks was kept under control and an unforeseen accident was avoided. After many inspections, only to find the flame arrester has been filled with frost, the local has become ice, continue to close the oil after treatment, the tank pressure returned to normal.