sufficient corrosion allowance for 30 years pipeline 1

[conero]

In a pipeline 16 inch downstream a treatment I have a fluid
having the following carachteristic:

Stream Molar Component Percents
CO2 4.371 E-05 |
H2S 0.000 |
H2O 5.391 E-03 |
Design pressure 90 bar
temperature 50°C

Pipeline (long distance)
Design life 30 years
Material API 5L X65
MAOP(bara) 98
DesignFactor 0.72
Min. allow.thk 6.1(mm)
C.A. 1.00(mm)
Nominal thk 7.1(mm)
Burial Depth 0.9 m as minimum

May I consider the 1 mm sufficient for this dehydrated oil?

 

[rustbuster]

I would suggest that you model your line from a corrosion perspective. Flow rate, topography etc. One such company, with a great model is CorrosionWatch. I believe their website is

http://www.corrosionwatch.com

or searh on the name.
Regards

 

[PAN]

I don't have the exact answer for this question. However, the external corrosion might be a serious problem for this underground piping system.

PAN