Inquiry (采购产品): Nitrogen volume Can you provide me with the nomagraph or equation to determine the quantity of nitrogen requred to perform pressure tests on gas mains? We have a 12" line that is 21,766' long. We need to remove the existing propane inside the line with a pig. The line is at 90 psig now and I am going to assume I will need an additional 50 psig to get the pig moving. Can you let me know how much nitrogen is required to get this line to up 140 psig? **** Hidden Message ***** ralph pfister Cincinnati, OH 45202 USA Company: Duke Energy Title: Sr. engineer Phone: 513-287-2730 E-mail: ralph.pfister@duke-energy.com **** Hidden Message ***** ralph.pfister@duke-energy.com
