Consider an insulated oil storage tank operating in a cold ambient temperature. Does the tank material have to be suitable for operation at the cold ambient (in this case -40°C). The choice is to spec A-516-70N or just keep it cheap and go with A-36. Probably the only time the tank will get down...
I am specifying some pumps for the third train of a plant using the second train pump datsheets as a guide.
For some reason, the engineer for the second stage pumps specified flat faced flanges for a pump out of carbon steel. Piping is also carbon steel. The pump is a little 5 hp Moyno...
I am looking at someone elses design of several API 650 flat bottom oil storage tanks that have a syphon in them that is confusing.
As an example, on tank is 5 m in diameter and 7 m in height. The syphon tube runs from an elevation of 0.5 m from the bottom of the tank to a height at the high...
Can someone elaborate what the letters in the seal code BSTFN is from Table H7 of API 610 8th edition? I know the Balanced and Single parts, but for the rest I'm just guessing. Are seal face materials part of this code?
It's for a vertically suspended cooling tower sump pump if that helps any...
Has anyone ever specified anything other than stainless steel for cryogenic pipe applications (-180°C)?
I was going to spec A312 TP304 but then I found 9% nickel steel that could do the job too, A333 Gr. 8. The question is, can you commercially buy this high nickel steel? Would it actually be...
I am in the process of working out some corrosion rates for piping and equipment at the inlet of gas processing plant. I am using NACE 69 as a guide for calculating corrosion rates.
The only known corrosive contaminant I have is CO2 which makes up 2 mol% of my inlet gas. The inlet gas comes it...
I have a natural gas stream that contains a very small amount of water vapour. The concentration is about 45 ppmv and the line pressure is at 600 psia.
Assuming I've got my science right, the partial pressure of the water vapour works out to 45x10^-6 x 600 psia = 0.027 psia.
Now the...
First, some background...
I have a closed loop cooling water system in which the pressure losses were over estimated. The circulation pump is a 100 hp centrifugal with a 14.5" impellor. The design flow rate is 1300 gpm with a TDH of 180 feet. When the pumps were started up the TDH was...
