corrosion breakdown factor
corrosion breakdown factor
(OP)
What laboratory in US can perform the testing to determine corrosion breakdown factor of coatings?
Does anybody has a reference on this lately?
Does anybody has a reference on this lately?





RE: corrosion breakdown factor
Steve Jones
Corrosion Management Consultant
http://www.linkedin.com/pub/8/83b/b04
All answers are personal opinions only and are in no way connected with any employer.
RE: corrosion breakdown factor
Yes, coating breakdown factor for cathodic protection. The corrosion protection coating manufacturing wants to calculate the breakdown factor for his product. Do you have any recommendation on what should be the process to obtain such factor please? Is this something a lab in US can help to assess?
RE: corrosion breakdown factor
"Owner should preferably specify constants a and b for calculation of coating breakdown factors based
on his own practical experience of specific coating systems in a particular environment. When Owner has not
specified any such data, the default values in Table 10-4 of Annex A shall be used."
********
There appears to be no predictive science behind coating breakdown factors which would suggest that a major research project would be required in an attempt to assign coating breakdown over the lifetime of the structure based on results of laboratory testing. Since there is no standardised way of doing this, it rather becomes a case of 'how lucky do you feel.' Consequently, the majority of designers simply go with the quoted breakdown factors in the design standards, such as ISO 15589, as the path of least resistance.
Steve Jones
Corrosion Management Consultant
http://www.linkedin.com/pub/8/83b/b04
All answers are personal opinions only and are in no way connected with any employer.
RE: corrosion breakdown factor
RE: corrosion breakdown factor
Steve Jones
Corrosion Management Consultant
http://www.linkedin.com/pub/8/83b/b04
All answers are personal opinions only and are in no way connected with any employer.
RE: corrosion breakdown factor
RE: corrosion breakdown factor
RE: corrosion breakdown factor
Steve Jones
Corrosion Management Consultant
http://www.linkedin.com/pub/8/83b/b04
All answers are personal opinions only and are in no way connected with any employer.
RE: corrosion breakdown factor
Do you have a recommendation on how to setup a test to calculate the coating breakdown factor for onshore coating applications?
I think we should coat few feet of a 8-10" OD pipe and bury it 6-8' down; circulate oil to keep constant op. temperature; install CP system and start tracking current consumption to calculate the coating deterioration. Does this plan make sense?
RE: corrosion breakdown factor
Steve Jones
Corrosion Management Consultant
http://www.linkedin.com/pub/8/83b/b04
All answers are personal opinions only and are in no way connected with any employer.
RE: corrosion breakdown factor
3-5 years initial monitoring to see if there is any current consumption changes. Do you know how other coating manufacturers did to asses their ƒi and Δƒ onshore(ISO 15589-1)? Do you have any recommendation on how to accelerate the study simulating a valid real-life setup?