Flat shell t-required calculations 1

[AKInspector]

Can someone guide me to a formula to figure t-required for a rectangular pressure vessel with flat sides (Fin-Fan header box)? I'm thinking of using the Sect. VIII flat head formula for lack of anything else. (I'm doing remaining life calculations.)

Thanks!

 

[prex]

Well, that would be the code used for an air cooler, if you refer to App.13.
Can you be more specific on what you need to do?

prex

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[AKInspector]

I'm trying to run remaining life calculations. I need to know the minimum required metal thickness, I just can't seem to find anything as clear as section UG-27 is for cylindrical and spherical shells. I'll look through appendix 13 more carefully to se if I can find what I need.

 

[roca]

Appendix 13 is where you should be looking for an all welded plug type header box. If it's a coverplate design (e.g. a full removable bolted cover with gasketted joint) then an alternative design is required as I don't believe Appendix 13 covers this.