Design for external pressure
Design for external pressure
(OP)
Can somebody suggest the procedure to carry out external pressure design for temperatures outside the range of External presssure chart.
I have design temperature of 1130° F and the yeild stress values are not listed at such high temperatures in 2-D. I believe that is what is causing the problem in calculating B-factor. Can I use the minimum yeild stree value listed in 2-D to carry my calculations.
Any suggestions will be greatly appreciated.
I have design temperature of 1130° F and the yeild stress values are not listed at such high temperatures in 2-D. I believe that is what is causing the problem in calculating B-factor. Can I use the minimum yeild stree value listed in 2-D to carry my calculations.
Any suggestions will be greatly appreciated.





RE: Design for external pressure
FWIW, the "Guidebook for the design of ASME Section VIII Pressure Vessels" gives a method for determining allowable longitudinal compressive stress (as for weight, etc) when the temperature exceeds that on the external pressure charts (the "B" factors are also used to determine allowable longitudinal compressive stress). See equation 2.25 in Section 2.3.
RE: Design for external pressure
RE: Design for external pressure