Automatic interlocking cut-off of oil tank oil inlet device
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According to the design specifications for oil depots, oil tanks that are frequently operated should be equipped with automatic interlocking devices to cut off the oil inlet. Now I have two questions: 1. What are the interlocking conditions? 2. Is the automatic interlock cut-off only set for the oil inlet device of the oil tank? For what reason? Thank you for your participation and please feel free to enlighten me!
6.0.14 Above-ground vertical oil tanks should be equipped with liquid level gauges and high liquid level alarms. Oil tanks that are frequently operated should be equipped with automatic interlocking devices to cut off the oil inlet. Oil tanks equal to or larger than 50,000m3 should be equipped with an automatic interlocking device to cut off the oil inlet. Oil tanks with dehydration operation requirements should be equipped with automatic dehydrators. 1. Oil tanks can usually be set up with low and low level alarms, low level alarms, high level alarms, and high and high level alarms according to the liquid level. Of course, you can also increase or decrease the alarm positions or numbers according to actual needs. 2. I think that setting so many alarms is nothing more than controlling the liquid level within a safe and reasonable range to prevent the oil tank from collapsing and causing a larger secondary accident. As long as the liquid level reaches the alarm state, the system can automatically open or close the oil inlet valve to avoid accidents. For example, if a long-distance pipeline transports oil products, the first station is pumping. The 5,000 cubic A tank at your download station is about to reach the safe capacity. At this time, you may be distracted from the computer screen. If there is no interlock device, the oil tank may top out in 2 or 3 minutes. If there is an interlock, the system will automatically close the tank valve and open another tank of the same type (with a safe capacity) at the same time, thus avoiding accidents. The low liquid level alarm can also prevent the liquid level from being too empty when transporting oil, which may empty the pipeline or cause the floating plate to be in an unmeasurable area. That should be it. Any additional corrections are welcome.
1. What are the interlocking conditions? It is related to the high liquid level alarm height setting of the oil tank. 2. Is the automatic interlock cutoff only set for the oil inlet device of the oil tank? Yes, the main reason is the fear of safety accidents caused by oil entering and leaking out of the tank.
Thank you very much for your guidance! Been taught a lesson!