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.
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