After the LNG storage tank experiences overpressure, does the flow first enter the main pipeline; if overpressure continues, does it then go into the atmosphere or directly into the atmosphere?
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After the LNG storage tank experiences overpressure, does the flow first enter the main pipeline; if overpressure continues, does it then go into the atmosphere or directly into the atmosphere?
If the discharge from the torch main pipe is not carried out in a timely manner, it is discharged directly into the atmosphere at the site.
Generally, it’s a torch that burns; if the pressure rises too quickly after burning, then venting is the only option
Your question isn’t clear enough – are you referring to a tank at atmospheric pressure or one under pressure? Tanks under pressure are generally smaller, and they are equipped with pressure gauges that can trigger alarms to alert operators to take action; they can also be used to shut off the inlet valve. If the pressure continues to rise, a safety valve on the tank will release the pressure into the flare system. As for tanks at atmospheric pressure, things get much more complicated. First, figure out what you actually want to do
The automatically controlled valve first directs the flow to the flare; if the safety valve then activates, the flow is discharged directly into the atmosphere
Releasing it into the atmosphere is the last resort.