CO2 or Crevice Corrosion
CO2 or Crevice Corrosion
(OP)
Background:RTJ CS gasket, see pic attached, was found badly corroded upstream CS valve, grooves on CS flanges were not affected, this is the only part in CS rest is DSS.
Gas composition : 6% CO2 and 1% H2O, WP 140 Barg.
RTJ corroded : complete internal perimeter in contact with the fluid heavy corroded, some portion of the RTJ against the groove also fairly corroded.
Is it to be considered as CO2 corrosion, Crevice Corrosion or corrosion combination of both.
Thanks in advance for any input.
Gas composition : 6% CO2 and 1% H2O, WP 140 Barg.
RTJ corroded : complete internal perimeter in contact with the fluid heavy corroded, some portion of the RTJ against the groove also fairly corroded.
Is it to be considered as CO2 corrosion, Crevice Corrosion or corrosion combination of both.
Thanks in advance for any input.





RE: CO2 or Crevice Corrosion
RE: CO2 or Crevice Corrosion
RE: CO2 or Crevice Corrosion
Good luck
RE: CO2 or Crevice Corrosion
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.