Mild Steel and HaOH?!?!
Mild Steel and HaOH?!?!
(OP)
I'm about to spec up and install a pipe run for 24% NaOH at Ambient Temp. I'm fairly sure that I don't need to stress relieve it. My main question is on passivating prior to use.
I was always under the impression that caustic lines need passivating prior to start up. (i.e fill with caustic and leave it, then drain it off)
Can anyone tell me what this does and how long I should leave the caustic in before draining.
Thanks in advance
Biggy
I was always under the impression that caustic lines need passivating prior to start up. (i.e fill with caustic and leave it, then drain it off)
Can anyone tell me what this does and how long I should leave the caustic in before draining.
Thanks in advance
Biggy





RE: Mild Steel and HaOH?!?!
RE: Mild Steel and HaOH?!?!
You mention that mild steel and 24% caustic should be ok, are there concentrations where it is a problem?
Biggy
RE: Mild Steel and HaOH?!?!