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Weld Spacing; ASME Pressure Vessel

Weld Spacing; ASME Pressure Vessel

Weld Spacing; ASME Pressure Vessel

(OP)
My colleague and I are questioning the distance of a nozzel weld from a circumferential weld on a pressure vessel that meets ASME Section VIII requirements. I am sure that the welds cannot be too close together. We do not have a copy of Section VIII to check this vessel against. Can anyone give us the quick and dirty guidelines to help in our evaluation of the construction of this vessel?

RE: Weld Spacing; ASME Pressure Vessel

1/16 inch stand-off by code, I specify 3/32 inch as a design practice.

Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada

RE: Weld Spacing; ASME Pressure Vessel

This wouldn't be the same situation as thread292-288685: Distance Requirement For Fillet Weld And Butt Weld
 would it?

As mentioned in that thread, it is perfectly legal to have a nozzle cross over longitudinal and circumferential seams. A few extra requirements, and client spec's may limit, and a design practice to be avoided, but ok with VIII-1.

jt

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