Tubesheet Section III Class 3
Tubesheet Section III Class 3
(OP)
Where should I go for rules regarding design of flat heads machined into tube sheets for a Section III Class 3 vessel?
Thanks
Thanks
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Tubesheet Section III Class 3
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RE: Tubesheet Section III Class 3
RE: Tubesheet Section III Class 3
The actual application is a vertical vessel consisting of three parts. Starting from the bottom of the bottom portion there is a bottom head (16.9 elliptical pipe cap), a section of cylindrical shell, and a weld-neck flange. The second section consists of a flat plate with a multitude of thru holes drilled in it in a pattern. This portion gets sandwiched between the bottom section and the top section. The top section is a weld-neck flange with a pipe cap welded to the top of it.
There are various other nozzles and so forth, but I am mainly interested in how to analyze the middle section. I know the pressure differential on the middle section. I don't see anything explicit in ND (this is a class 3 vessel). Any help would be great. Thanks!
RE: Tubesheet Section III Class 3
RE: Tubesheet Section III Class 3
Regards,
Mike
RE: Tubesheet Section III Class 3
RE: Tubesheet Section III Class 3
While A-8000 seems to be the most applicable at first sight, At the beginning of Section III, Div 1, App A A-8000 there are 5 criteria that must be met, and this design does not meet criteria number 5, since there is a differential pressure on the part, the loading is not "in-plane" and the thickness is not at least twice the hole pitch.
Since the Section VIII approach is readily available to me, I'm going to attempt it.