What API Std is used when there has been a modification on the original seals of a crude oil storage tank?
It is an aboveground tank with an internal floating roof.
The original design of the tanks used to have wiper seals and was changed to mechanical shoe seals. I would like to know under...
Yes, since the mechanical shoe seals were installed, it took 3 years for oil to appear on the roof. We cleaned it and in 3 years we faced the same problem and for the third time 2 years later. It seems that the mechanical shoe does not let the roof find its free point or in other words does...
IFR
Thank you, I'll keep you in mind.
You mentioned some reasons that I had not thought about!! From the information we have right now, I think the seal friction is what is making the roof hang; Since the original design was changed, from wiper seals to mechanical shoe seals,making it produce...
It is an internal, pan steel decks floating in contact with the product. It was installed in the late 70's and the original perimeter seal were double wiper seals, but we changed them to mechanical shoe seals 10 yrs ago. I do not know the brand of the seals but they were fabricated by Tank...
IFRs
Thank you for your time, the pipe size we use at the inlet and outlet is 24". I compared the rate you gave me with what we use, 25 bbl/hr, and we have a much lower rate which tells me that is not the cause of the problem.
Oil is getting on top of the floating roof, after several...
IFR, do you have any info on a rule of thumb about the fill rates? We have a 222" diamenter, 32" height tank with a floating roof, and we are using mechanical shoe seals. The product is oil.
