materials for condensate piping system
materials for condensate piping system
(OP)
We have a 3” and 4” condensate piping system from a flare drum to an oil settling tank. These lines pump condensate to an elevated oil settling tank via an intermittent pump which leads to liquid condensate remaining stagnant in low lying areas of the piping leading to corrosion with resultant pin holes. We are in the process of replacing these corroded sections and I would appreciate if members can advise on how we can eliminate these low lying areas and also what suitable materials to use as replacement. At the moment the lines have been carbon steel.





RE: materials for condensate piping system
RE: materials for condensate piping system
RE: materials for condensate piping system
RE: materials for condensate piping system
RE: materials for condensate piping system
For boiler condensate piping,(which is subject to carbonic acid corrosion) it is recommended to use schedule 80 CS piping.
https://www.swagelok.com/~/media/Distributor%20Med...
Would schedule 10S stainless piping be worth the investment ?
How high are the chlorides ?
MJCronin
Sr. Process Engineer
RE: materials for condensate piping system
Recently cracking was found at welds near the drip leg of carbon steel pipe in steam service. Failure was due to caustic cracking. Apparently the Owner preferred to remake and re-install the affected spools every few months rather than stress relieve the welds.
RE: materials for condensate piping system
RE: materials for condensate piping system
RE: materials for condensate piping system