×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Pitting corrosion on Carbon steel flow line

Pitting corrosion on Carbon steel flow line

Pitting corrosion on Carbon steel flow line

(OP)
Folks,

Any ideas of what auses the pitting corrosion on wet gas carbonsteel pileline?

Any feedback would be appreciated.

Please see attached  

RE: Pitting corrosion on Carbon steel flow line

sw71im,

It could be caused by a hundered different things. You are going to have to be more specific about all the details of your specific application before anyone can make an educated guess as to what your problem is.

Best Regards,

VRF

RE: Pitting corrosion on Carbon steel flow line

You would need to dig out any relevlant background information in regards to the pipeline in service.

Questions such as:
1) What's the operating condition
2) Apart from wet gas, what's running inside the pipeline (e.g. HP steam, any contaminations'?
3) Where there a change of duty prior to flooding the pipeline with wet gas?
4) What's in the wet gas?
5) Where's the pipeline running from? (e.f. refining units, hydro desulphidation unit etc. etc.)
6) Any history of failure in regards to the pipeline?

 

RE: Pitting corrosion on Carbon steel flow line

See if you can play snap with any picture in the NALCO publication, Corrosion in the petroleum industry (11 MB pdf that won't attach).  Is the picture at the top of the line and what is the steady state flow regime?  The words wet and gas usually go with CO2 corrosion.

Steve Jones
Materials & Corrosion Engineer

http://www.linkedin.com/pub/8/83b/b04
 

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources