Home › Forums › Coking › Operations › Cutting, Drilling, Unheading › Unheading › Atmospheric venting › RE: Atmospheric venting
May 4, 2011 at 9:40 am #5118
Some refineries start the drainig whitout open the vent, with the drum still connected whith the blown down and pressurized. Then after some time, when the pressure get low the operator isolate the drum and open the vent. There is a risk of hot spots and send HC to atmosphere by the blow down but you gain a valuble time.