Do you normal apply corrosion allowance when designing vessel supports?
Do you normal apply corrosion allowance when designing vessel supports?
(OP)
Hi,
Just a quick one,
Do you normal apply corrosion allowance when designing vessel supports?
Just a quick one,
Do you normal apply corrosion allowance when designing vessel supports?





RE: Do you normal apply corrosion allowance when designing vessel supports?
RE: Do you normal apply corrosion allowance when designing vessel supports?
So appling 1.5mm total and you can forget what will be changed later, making you worry free.
RE: Do you normal apply corrosion allowance when designing vessel supports?
"How long do you want the supports hold up the pressure vessel?" and
"What external environment do the legs and support plates have to live within?"
Sure, the dumb things are outside - away from the corrosion (?) of the process fluid itself, and - obviously! - they are not subject to the internal pressure threat if they wear down, BUT they also get exposed to the steady day-to-day corrosion of salt, humidity, sand ?, rain and standing water, galvanic (a little) and the spills and un-removed residue of the process fluid.
Look at the bases and support plates and lower steel of a simple, un-pressurized ash removal tower of even a 15 year old power plant. The steel is 25% gone, and what is left is flaking and spalling, held on by gravity because sandblasting to paint the rust would be even worse. Go to a 40 year plant? The basic steel and braces are even more degraded.
RE: Do you normal apply corrosion allowance when designing vessel supports?
Regards,
Mike
RE: Do you normal apply corrosion allowance when designing vessel supports?
In other words, there is no definitive YES or NO answer, but depends on environment. That also applies to the corrosion allowance on anchor bolts.
RE: Do you normal apply corrosion allowance when designing vessel supports?