Gas line corrosion - Pics
Gas line corrosion - Pics
(OP)
Dear mates,
Pictures were taken from a pipe sample, it belongs to 4" CS-HP (90 Barg) gas line.
Background and findings : no SRB reported, no corrosion inhibitors injected, water was found inside the line, CO2 contents < 3%.
I'm thinking in Organic acid corrosion produced by APB colony.
Mitigation measure ??
Thanks in advance for any input you can have.
Pictures were taken from a pipe sample, it belongs to 4" CS-HP (90 Barg) gas line.
Background and findings : no SRB reported, no corrosion inhibitors injected, water was found inside the line, CO2 contents < 3%.
I'm thinking in Organic acid corrosion produced by APB colony.
Mitigation measure ??
Thanks in advance for any input you can have.





RE: Gas line corrosion - Pics
RE: Gas line corrosion - Pics
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
All answers are personal opinions only and are in no way connected with any employer.
RE: Gas line corrosion - Pics
Thanks for you input about how to prevent MIC.
Two facts to think about MIC : localized corroded area was found in a straight part of the line, so no turbulent flow there and the statement in API 571 here below ( see photos).
API 571 - 4.3.8.5 Appearance or Morphology of Damage
b) Damage is often characterized by cup-shaped pits within pits in carbon steel.
Regards.
RE: Gas line corrosion - Pics
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
All answers are personal opinions only and are in no way connected with any employer.
RE: Gas line corrosion - Pics
Aaron Tanzer
www.lehightesting.com
RE: Gas line corrosion - Pics
= = = = = = = = = = = = = = = = = = = =
Plymouth Tube
RE: Gas line corrosion - Pics
Thanks for the inputs.
RE: Gas line corrosion - Pics
RE: Gas line corrosion - Pics
RE: Gas line corrosion - Pics
RE: Gas line corrosion - Pics
RE: Gas line corrosion - Pics