Erosion Vs Corrosion
Erosion Vs Corrosion
(OP)
Dear friends ;
I'm wondering if anyone could explain what's the difference between erosion and corrosion in a pipeline ?
I'm wondering also if the erosion occurs when we have two phase fluid or it can occur when we have one phase fluid (
liquid for example ) ?
Thanks a lot !
Regards !
I'm wondering if anyone could explain what's the difference between erosion and corrosion in a pipeline ?
I'm wondering also if the erosion occurs when we have two phase fluid or it can occur when we have one phase fluid (
liquid for example ) ?
Thanks a lot !
Regards !





RE: Erosion Vs Corrosion
http://gekengineering.com/Downloads/Free_Downloads...
RE: Erosion Vs Corrosion
In this article they said in page 38
Erosion - All Liquid Flow
• Described by API Equation 14E
Vc = C (density)1/2
where: Vc = critical flow velocity, ft/sec
density = fluid density in g/cc
C = 100 for long life projects
C = 150 for short life project
C = >200 for peak flows
But Aas I read the API 14 E , they just talk about erosional velocity for liquid / gas mixture
RE: Erosion Vs Corrosion
Tends to only occur in lines with particles (dirt) at high valocities. The API 14E equation is widely recognized as being highly conservative and the C factor difficult to evaluate, but goives you some idea of whther it is a problem or not.
Corrosion on the other hand is a chemical reaction between a substance in the fluid and the pipe material which results in the pipe material being essentially dissolved over time. Temperature can have a big effect as well as the concentration of the chemical substance.
This all sounds very basic....
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RE: Erosion Vs Corrosion
As LittleInch correctly states, erosion by clean fluids rather than slurries, at velocities anywhere nearly economic in piping, is pretty much a figment of imagination rather than a real problem- until you get into very long design lives. If clean fluid erosion were a real problem, most control valve trims or pump impellers wouldn't last a month.
RE: Erosion Vs Corrosion
RE: Erosion Vs Corrosion
thanks a lot for your replies!
I'd like to add that my fluid stream is DIESEL
RE: Erosion Vs Corrosion
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.