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Can Fig UW-16.1 type f-4 nozzle weld only from outside?

Can Fig UW-16.1 type f-4 nozzle weld only from outside?

Can Fig UW-16.1 type f-4 nozzle weld only from outside?

(OP)
Hi All,

As per ASME VIII Div 1, fig uw-16.1 type f-4 nozzle connection, it has shown as welded from both side, inside and outside, due to geometry limitation, it is not possible to weld from the inside of the shell, is it permissible to weld only from outside. just like weld shown for type f-1?

Thanks

Spoonful

RE: Can Fig UW-16.1 type f-4 nozzle weld only from outside?

It is possible, refer UW-12, type and joint category limitations.
Cheers,
gr2vessels

RE: Can Fig UW-16.1 type f-4 nozzle weld only from outside?

(OP)
Hi gr2vessel,

Could you please give further reference within WU-12? weld per UW16 f-4, is this still a category D weld?

RE: Can Fig UW-16.1 type f-4 nozzle weld only from outside?

Spoonful,
The limitations in Table UW-12, type (3) do not refer to joint category D. What's the thickness in question? What is the OD of the self reinforced nozzle at the reinforcement? Please read the Table UW-12! It's probably a Cat A weld.

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