Tapered Transition for cone to cylinder attachment as per ASME BPVC VIII-1

[Paulettaa]

Dear All

A conical section with half apex angle of 15 degrees is going to be joined to a cylinder of different thickness. The difference in thickness is 20 mm. Is there any requirements for a tapered transition as per UW-9 or UW-13 for this joint? In tapered transition requirement is there any difference if the change in thickness is in the large or small end of the conical section?

Warm Regards

 

[r6155]

You must consider each extreme correctly.

Regards

 

[SnTMan]

Paulettaa, a sketch would be helpful but I'd say that per UW-3(b) you apparently have a Category B butt joint at each end of the conical transition. UW-9(c)(1) applies, pay attention to the third sentence.

Regards,

Mike

The problem with sloppy work is that the supply FAR EXCEEDS the demand