corrosion rate calculation
corrosion rate calculation
(OP)
Good day all,
Can anyone give some insight into determining the corrosion rate of a carbon steel pipe? I have minimum thickness readings, nominal thickness, corrosion allowance, piping class, and will like to get the rate of degradation of the pipe.
Thanks.
Can anyone give some insight into determining the corrosion rate of a carbon steel pipe? I have minimum thickness readings, nominal thickness, corrosion allowance, piping class, and will like to get the rate of degradation of the pipe.
Thanks.
RE: corrosion rate calculation
It has been my expereince that corrosion rates for carbon steel piping are not really calculated.....they are estimated based on lab test results.
Lets say that in a certain service the corrosion rate from experimental data is 2 mills per year (.002 inches) if we want about a thirty year piping life, we would specify an additional "corrosion allowance" of .0625 inches on the pipe wall thickness.
Corrosion allowances used in piping design typically range from 0.0 to 0.125 inches in most service.
If the corrosion rate causes a piping lifetime that is too short, switch to a more corrosion resistant material.
-My opinions only
-MJC
RE: corrosion rate calculation
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RE: corrosion rate calculation
Look at past performance of the material in similar applications and environment.
RE: corrosion rate calculation
Mike