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Joint Efficiency
3

Joint Efficiency

Joint Efficiency

(OP)
I'm designing an aluminum pressure vessel. Shell and
head material is SB209-5083-O. Shell weld is Type 1
and torispherical head is seamless. There are no radiogragraphy for this vessel. What efficiency will
I use for the required minimum thickness calculation
for the head?

I'm using a 0.70 efficiency for the shell thickness
calculation.

Appreciate any help on this matter.  
 

RE: Joint Efficiency

Hi Estssoc,
The Table UW-12 specifies E=0.7, as you mentioned, for no radiography design of the shell. Since the head is seamless, use E=1 for the dished end calculation.
cheers,
gr2vessels

RE: Joint Efficiency

(OP)
Thanks guys. Appreciate the help.

I'll use 0.85 efficiency per UW-12(d).

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