Intermediate pump station spacing
Intermediate pump station spacing
(OP)
Want to significantly increase capacity of an old 8" crude pipeline that is 40 miles long on level terrain. MOP 750 psi based on design strength of the pipe. Installing four intermediate pump stations plus DRA would achieve the objective more economically than looping the entire line. Is it feasible to have that many stations only 8 miles apart or would I have line up problems due to transient pressure issues? How close is too close?





RE: Intermediate pump station spacing
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"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Intermediate pump station spacing
RE: Intermediate pump station spacing
Yes I'm sure that somebody has done a gradient diagram and and can prove it works (for a month or so).
First do a velocity calculation. Pipelines should normally be kept within 3 fps and 10 fps to avoid sedimentation at low velocities and pipe wall erosion and transient pressures at higher velocities. I'm sure the velocities must be very much greater than 10 fps. That's the first killer card.
Second killer card is to calculate the cost of power needed to operate this pipeline at that high flowrate. Then add a lot of maintenance due to erosion blowouts.
Fourth killer card is to calculate the cost of installing and maintaining 4 pump stations and an old pipeline (which will probably require considerable maintenance) as opposed to just one high pressure pump station and a new high pressure pipeline (using DRA) of the correct diameter.
What is the maximum flow you are designing for now and the operating pressure of the old pipeline?
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"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Intermediate pump station spacing
RE: Intermediate pump station spacing
Got it. I think the 4 pump stations are needed WITHOUT DRA.
Where's the DRA study? How much DRA do you plan to use?
**********************
"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Intermediate pump station spacing
**********************
"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/