Dear forum fellows,
A client ask me to design a UAN32 Storage Tank for his facilities. I'm a tank designer, but, as I never did one before, I had to do some research. I found out that UAN32 is extremely corrosive. Although the use of corrosion inhibitors reduces the problem, tank liner and...
Dear fellows,
I could use some help involving restriction orifice plate (square-edge) according to RW.Miller calculations.
Datasheet specifies:
gas/vapor
Upstream pressure (pf1) 22bar
Pressure drop (delta p) 20bar
Inlet temperature (Tf1) 40°C
Compressibility factor (Z) 0.93
Specific heat ratio...
Dear fellows,
I have a 19m DIA x 21m bunker fuel tank (HFO) and I need to heat it, but there are so many solutions that I myself got confused. Doing my research I found "suction heater" to be the most elegant choice, but is it economical worthy? Anyone has any suggestions or advice? What is the...
Dear Community,
I would like to ask a question about Emergency Relief Valve & Pressure/Vacuum Relief.
Following API-650 appendix F, I calculated a max design pressure of 9,6 kPa. I suppose I’ll have to limit our PV at 9,6 kPa or less.
But, I do not want to use anchorage, and if I use this...
According from what I know, one of the best locations to install a foam chamber is upwind. It means that if you have an predominat wind pointing north, you could install it at south position, wind east/foam chamber west, etc.
But, if you have two foam chambers. According to my readings, the...
Dear community, maybe someone could help me:
For a 75,000 barrels diesel oil storage tank with frangible roof, I'd like to clear my doubts:
1. If the roof is frangible, do I need an emergency valve (EV)? (API 2000 says "no")
2. If the tank is open to atmosphere, should I consider internal...
Dear community,
So it comes to a point where Appendix A can be used. Using E = 0.7, spot radiograpy may be omitted. But, what about UT if we're using UT instead of RT. May it also be omitted?
Thanks in advance,
Dear fellows,
Maybe someone could help me. The reinforcing pads of a tank under my design responsability are already welded but without the telltale hole. Is there any way we could fix that?
Thanks in advance
thread809-255764
Dear fellows,
According to API-650,
5.7.2.10 Reinforcing plates for shell openings, or each segment of the plates if they are not made in one piece, shall be provided
with a 6 mm (1/4 in.) diameter telltale hole. Such holes shall be located on the horizontal centerline and...
thread809-168184
Ok, so, based in my overturning stability calculations, I concluded that my tank has to be anchored. Using "Wind load" formula for uplift (table 5-21a), the results gave me a negative value. Am I doing something wrong? Hence, the results of "Design Pressure + Wind load" gave me...
Dear fellows,
Please someone correct me if I'm wrong. In appendix F "internal pressure cannot exceed the weight of the roof".
So:
Pi (kN) < Wr (kN)
-> Wr is a known value (ton);
-> Internal pressure is limited to 3kPa;
-> Di is the inside diameter of the tank (m);
Dp < Wr
pi*Di^2/4*Dp <...
Dear fellows,
We are a just-born engineering company in Brazil in the storage tank area. This is my first post and as matter of fact, nowadays, I have more questions than answers. So, in time, I'd like to contribute with my experiencies and grow with the group. Our main shareholder asked us to...
