Chemical Treatment AND Coating for Corrosion Protection
Chemical Treatment AND Coating for Corrosion Protection
(OP)
Hi,
One major oil company mandates the use of coating and chemical treatment! I guess their argument is that the corrosion inhibitor will work on coating failures and welds as the CP will do for the coating holidays! which is not proven as far as I know. I do not consider internal coatings as a "real" corrosion protection because of the numerous failures, welding … etc.
1) Is there any international standard the mandates or recommends the use of chemical treatment in conjunction with internal coating for corrosion protection.
2) I would go with bare CS and very stringent corrosion inhibition system (the service is corrosive), but is there any other option? Changing the material is not an option. I am afraid of managing the corrosion inhibition system as the facility has a poor track record of managing their corrosion inhibition system.
One major oil company mandates the use of coating and chemical treatment! I guess their argument is that the corrosion inhibitor will work on coating failures and welds as the CP will do for the coating holidays! which is not proven as far as I know. I do not consider internal coatings as a "real" corrosion protection because of the numerous failures, welding … etc.
1) Is there any international standard the mandates or recommends the use of chemical treatment in conjunction with internal coating for corrosion protection.
2) I would go with bare CS and very stringent corrosion inhibition system (the service is corrosive), but is there any other option? Changing the material is not an option. I am afraid of managing the corrosion inhibition system as the facility has a poor track record of managing their corrosion inhibition system.
RE: Chemical Treatment AND Coating for Corrosion Protection
2.
If changing the material is not an option, and coatings are not considered effective (for the design life), there is nothing left, (CP being totally weird) in the corrosion control sphere, other than to modify the fluid and load a big corrosion allowance if pitting isn't envisaged. That fluid modification could be a process treatment, or it could be a chemical treatment. I almost neglected the last option: prayer.
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: Chemical Treatment AND Coating for Corrosion Protection
RE: Chemical Treatment AND Coating for Corrosion Protection
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: Chemical Treatment AND Coating for Corrosion Protection
RE: Chemical Treatment AND Coating for Corrosion Protection
Galvanic or impressed current systems could work well. Protecting pipe is difficult due to the length, too many anodes. Y'all got me thinking. I have an idea for impressed current protection of piping...
RE: Chemical Treatment AND Coating for Corrosion Protection
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: Chemical Treatment AND Coating for Corrosion Protection
RE: Chemical Treatment AND Coating for Corrosion Protection
RE: Chemical Treatment AND Coating for Corrosion Protection
Welding will be a real challenge.
RE: Chemical Treatment AND Coating for Corrosion Protection
RE: Chemical Treatment AND Coating for Corrosion Protection
Using corrosion inhibitor with coating is mandated by the client, but I wanted to:
1) understand the logic behind such requirement (I was guessing when I mentioned that the inhibitor will work on welds and holidays as the CP does).
2) explore other options as I know that it will not work as expected because managing the inhibitor system is very challenging (the service is very corrosive).
RE: Chemical Treatment AND Coating for Corrosion Protection
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.