Page 46 - Pressure Vessel Design Manual
P. 46
32 Pressure Vessel Design Manual
0 Required Head Thickness, t,
-k
0 Znternal pressure, Pi. Select appropriate head formula
based on head geometry. For dished only heads as in
Figure 2-5, Case 3:
Figure 24. Dimensional data for an intermediate head.
Seal OF
A,= t,
A, = t, + lesser of t2 or t,
Case 1 Case 2
Butter to
Reinforcing
plate
t2
E = 0.7
E = 0.55
Design the weld attaching
D
sin e = 2 ~ the head as in Case 3 and
the welds attaching the
A, = lesser of t2 or t3 reinforcing plate to share full
E = 0.7 (butt weld) load
Case 3 Case 3 Alternate
Figure 2-5. Methods of attachment of intermediate heads.
