Large diameter vacuum vessel design

[Moersleutel]

Could anyone provide me with a design code or standard for the design of a vessel operating under vacuum (-22 kPa)condition? Internal pressure is only liquid level. The vessel is a large diameter (7000mm) absorber with a 15 degree top cone, flat supported bottom and a large rectangular opening.

Thanks
Rudo Louw

 

[butelja]

If the diameter to shell thickness ratio is less than 1,000 then use ASME Sec. VIII methodology. If this is a non-ASME vessel with D/t > 1,000 (such as API 650 tank), then the external pressure design of the shell can be evaluated using the David Taylor Model Basin Formula. This is given in formula (3-6) in Part III of Volume II of "Steel Plate Engineering Data". This very useful and inexpensive ($50) reference is available from the American Iron and Steel Institute at:

http://odin.syscomsrv.com/aisishop/product.asp?pf_id=T-192&dept_id=511&top_dept_id=2005