Estimating rate of corrosion
Estimating rate of corrosion
(OP)
Hello.
What is the basic steps of estimating rate of corrosion for piping runs?
Assuming uniform corrosion and erosion.
The fluid contains following in mg/kg:
CO2: 56,7
H2S: 85,3
SiO2: 694,8
Na: 152,2
SO4: 18,9
other parameters:
Temp: 210 degree Cecius
Velocity: 40m/s
Is there a way I can estimate the corrosion rate? i'm designing a pipe run that must have life span of 25years and preferebly I want to use Carbon steel. I am designing in accordance with ASME B31.3
What is the basic steps of estimating rate of corrosion for piping runs?
Assuming uniform corrosion and erosion.
The fluid contains following in mg/kg:
CO2: 56,7
H2S: 85,3
SiO2: 694,8
Na: 152,2
SO4: 18,9
other parameters:
Temp: 210 degree Cecius
Velocity: 40m/s
Is there a way I can estimate the corrosion rate? i'm designing a pipe run that must have life span of 25years and preferebly I want to use Carbon steel. I am designing in accordance with ASME B31.3





RE: Estimating rate of corrosion
http://www.eng-tips.com/viewthread.cfm?qid=407990
However, 210 deg C is beyond the validity range of most, if not all, models.
Steve Jones
Corrosion Management Consultant
http://www.linkedin.com/pub/8/83b/b04
All answers are personal opinions only and are in no way connected with any employer.
RE: Estimating rate of corrosion
RE: Estimating rate of corrosion
Steve Jones
Corrosion Management Consultant
http://www.linkedin.com/pub/8/83b/b04
All answers are personal opinions only and are in no way connected with any employer.
RE: Estimating rate of corrosion
Maybe you have some references or some materials to investigate. To me it seems like the temperature is won't let me chose a non metallic material.
Regards
RE: Estimating rate of corrosion
Even without sny suspended solids plain carbon steel will have a short life.
Any elbows in this run?
I would guess that you are looking at 5-9-12% Cr grades for this service.
Even then 25 years may be optimistic.
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P.E. Metallurgy, Plymouth Tube
RE: Estimating rate of corrosion
RE: Estimating rate of corrosion
RE: Estimating rate of corrosion
This is produced water, I was allowed to reduce the velocity by increasing the nominal pipe size. As DSB suggest the erosion would be to high with such a speed. I have reached a conclution that I will work with carbon steel.
It is just hard to estimate the corrosion/erosion allowance