Min thickness

[lbela]

Would anyone please advise or state the industrial common practice.
What is the min thickness can be used for 32' diameter vessel (no hydro, no static head, atm pressure)
Are stiffeners required other then ext P purpose?
Thanks

 

[racookpe1978]

You need to define the fluid you are trying to hold: Temperature + pressure + density + HEIGHT of the (vented) = pressure you need to resist.

Fluid properties determine the corrosive properties of the material of the tank.

Height and fill method and discharge methods of the tank determine HOW the tank/vessel/silo is supported = HOW its walls must be designed structurally.


How and why do you think you will EVER get external pressures?

 

[lbela]

Thank you for your answer,
no Pext there.

 

[chicopee]

W/ cylindrical vessels of proper thickness no stiffeners required; however, flat vessel heads may require stiffeners if thicknesses are under valued.

 

[JStephen]

A vessel for atmospheric pressure is a "tank". On a 32' industrial tank, the normal standard in the US would be API-650. I believe it specifies 3/16" minimum thickness for that diameter, although 1/4" minimum is often used. This assumes it is field-erected, not moved as one piece.

 

[ak1965]

Ibela

If it is with atmospheric pressure........it is not a vessel..rather better to call it a tank......!!

Only liquid head would be there to cause pressure on the tank walls......and the wall thickness would be reducing from bottom to top in segments...!

I give you a reference....may be helpful to you....

We have a Spent Caustic Storage tank of 31.9' dia with a domed roof and a height of 27' ....similar to your dimensions......it has 04 sections of shell. The lower most shell plate is 9.4 mm thk. and upper 03 shell plates are of 6.4 mm thk each.

The plate material is A 283 C...hope the input will help you.......

All the best.......!!