Flow Accelerated Corrosion
Flow Accelerated Corrosion
(OP)
Does anybody have information that can assist in determining the flow accelerated corrosion rate of Carbon Steel Pipe (SA-106 GrB) with clean deaerated boiler feedwater? What are the rule of thumb velocity limits to prevent FAC of a CS pipe? Can anybody suggest any good sites or literature with FAC rates?





RE: Flow Accelerated Corrosion
RE: Flow Accelerated Corrosion
Has this problem been ongoing or just recently discovered?
Has the process been altered - chemically or more heat been introduced?
Wayne E. Lovison
service-parts@naglepumps.com
RE: Flow Accelerated Corrosion
As an old powerplant systems designer, I recall a couple of rules of thumb about condensate systems:
- Keep the design velocity at 3-7 fps
- Use sched 80 pipe and replace the system as necessary
Check in the "Piping Handbook" by NAYYAR... I believe that there is a table of maximum suggested velocities for various piping systems, including condensate.
I belive that EPRI (Electric Power Research Institute) has authored many papers on this subject. They also offer a proprietary program (called CHEKMATE, I believe) that will investigate and evaluate specific sites suspected of FAC.
However, EPRI is funded by the utilities and publications are not free...
Condensate systems, like love, periodically erodes away and needs replacement every 15 to 20 years....
Anybody got any research papers/websites etc. to share ??
Hope that this helps....
MJC
RE: Flow Accelerated Corrosion
RE: Flow Accelerated Corrosion
RE: Flow Accelerated Corrosion