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L.O. Tank internal coating

L.O. Tank internal coating

L.O. Tank internal coating

(OP)
does anyone know if a horizontal, aboveground, lube oil tank at atmospheric pressure needs an internal coating?  or is this something that is done as a "best practice"?

is there a spec which requires this coating (or corrosion allowance)? if so can someone tell me what it states?

thanks,
kgj

RE: L.O. Tank internal coating

For this kind of product "clean" Lube Oil, the storage tank does not require internal coating. Even so that depends of owner requiremens. Regarding corrosion allowance the minimun shall be 1/16" according to API 620 Appendix "G"

RE: L.O. Tank internal coating

(OP)
thx 22320, but i got a different response from another person on here:

>rlewis (Mechanical) wrote: 11 May 05 9:28  
>
>The portion of the tank which is below the oil level will >not corrode, however the portion above the oil probably >will.  You've also got a commissioning period when the >tank is empty to worry about.  Corrosion products from >hte tank will contaminate the oil.  For this reason, in >critical services, oil tanks are made from stainless.  >For less critical services where you want to save some >cost, I would recomend CS with a coating.  You might get >by with an uncoated tank, especially if you kept a dry >air or nitrogen purge on it, but for my money, it isn't >worth the risk.

i tend to favor/agree with this approach, what do you (and everyone else) think?

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