Temperature Limit
Temperature Limit
(OP)
As per ISO 15156-3, for 316L SS pipe in sour service, is it correct that as per table A.2, the maximum temperature limit is only 149 deg C if we comply with pH2S, chloride, pH limits.
Thanks in advance.
Thanks in advance.
RE: Temperature Limit
Also, remember that welds are not covered.
Steve Jones
Corrosion Management Consultant
www.linkedin.com/in/drstevejones
All answers are personal opinions only and are in no way connected with any employer.
RE: Temperature Limit
It is up to you to address those as well.
= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, consulting work welcomed
RE: Temperature Limit
Your replies are not clear to me. Please elaborate. I was looking for yes / no type reply.
My pipe class shows 316L pipe used upto 250 deg C.
What is the maximum temp limit of 316L per ISO 15156-3.
RE: Temperature Limit
Once you start adding any corrosion effects those will only reduce the maximum service temperature.
Looking at just pH and Cl you will run into pitting/cervice corrosion limits.
And then you need to consider the H2S related issues.
This is called engineering, the solving of problems.
= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, consulting work welcomed
RE: Temperature Limit
There are three ways to allow 250 deg C:
1. Absolute confidence in a maximum 50 ppm of chloride
2. Performing a suitable laboratory qualification test programme
3. The pipe is going into equipment that has already performed satisfactorily for a minimum of 2 years in the specific environment.
Good luck
Steve Jones
Corrosion Management Consultant
www.linkedin.com/in/drstevejones
All answers are personal opinions only and are in no way connected with any employer.