Acceptable pH in CarbonSteel Pipe
Acceptable pH in CarbonSteel Pipe
(OP)
We have a new process that generates a waste water stream. The waste water will be acidic, but we can adjust the pH to suite.
Process piping AFTER the pH adjustment is planned to be carbon steel (grade A106).
We would like to limit the final pH adjusted volume to minimal.
So what is an acceptable pH range for carbon steel?
Thanks.
Process piping AFTER the pH adjustment is planned to be carbon steel (grade A106).
We would like to limit the final pH adjusted volume to minimal.
So what is an acceptable pH range for carbon steel?
Thanks.
ProjEngKLS





RE: Acceptable pH in CarbonSteel Pipe
1) Is there corrosion allowance in the specified wall thickness?
2) Are there any corrosion prevention systems (cathodic protection and/or coatings?
3) Are there connections between dissimilar metlas that might promote galvanic corrosion?
4) What kinds of corrosion are likely (uniform? localized pitting? stress corrosion cracking?) and how easy is it to detect unacceptable corrosion resulting from "less than optimum" control over the fluid characteristics? If the corrosion is easy to detect then you have time to adust the fluid composition to become less corrosive)
5) What are the consequences of a corrosion failure (inconvenient leaks? catastrophic failure?) This influences how conservative you want to be in the process control.
RE: Acceptable pH in CarbonSteel Pipe