Hydro Testing Inconel 625 lined Spool Piece
Hydro Testing Inconel 625 lined Spool Piece
(OP)
Can anyone one advise on whether demineralised water or water with an inhibitor is more suitable for hydro testing a spool lined with Inconel 625?
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Hydro Testing Inconel 625 lined Spool Piece
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RE: Hydro Testing Inconel 625 lined Spool Piece
Therefore you should be able to test it in virtually any liquid surely.
Demin water is for stainless systems / Nickel alloys to avoid chloride contamination.
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RE: Hydro Testing Inconel 625 lined Spool Piece
Inconel 625 is widely used for sea-water service which is very corrosive. Why would you think of DM water for testing? BTW, what's the base pipe made of?
Ganga D. Deka, P. Eng
Canada
RE: Hydro Testing Inconel 625 lined Spool Piece
RE: Hydro Testing Inconel 625 lined Spool Piece
But, if the water is to be "left in system" after the hydro test until commissioning and startup, and if demin water is required for the running plant, then you might consider using demin water. But, I'd rather use the much cheaper regular city tap water for everything up to the final system flush and cleaning. Then turn over a drained and inspected system (no chance for leaks during the outage after the hydro, no LOTO problems and continuous monitoring needed!) for the operations people to refill for startup with demin water once everything is starting up.