Attachment welds at openings
Attachment welds at openings
(OP)
Usually we weld all our openings (nozzles, tubes, fittings, etc.) on vessels by means of full penetration welds even if it is not required or neccessary. We think this way is more stiffer and can withstand much more loads, etc.
Every time our AI require us to calculate and check on vessels the minimum dimension of the weld tw or tc (see UW-16). But if the welding details are according to figg. UW-16.1 sketchs (a), (b), etc. UW-15 (b) write it is not required or not?
Best regards
AMinati
Every time our AI require us to calculate and check on vessels the minimum dimension of the weld tw or tc (see UW-16). But if the welding details are according to figg. UW-16.1 sketchs (a), (b), etc. UW-15 (b) write it is not required or not?
Best regards
AMinati





RE: Attachment welds at openings
RE: Attachment welds at openings
RE: Attachment welds at openings
Best regards
AMinati
RE: Attachment welds at openings
Yes, this is required to be validated by the AI.
RE: Attachment welds at openings
Here's a National Board article about the AI's responsibility for dimensional inspection...
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Read the third paragraph under Design Requirement Translation.
RE: Attachment welds at openings
UW-15(b) states that strength calculations are not required if the manufacturer uses certain attachment details. However, each of those attachment details require the manufacturer to make a simple size (not strength) calculation. Even the simplest attachment detail requires the manufacturer to calculate the size of the attaching fillet-weld based upon material thickness. After calculation, the required dimension of the fillet weld is stated on the fabrication
This means that if I put in our drawings for all full penetration welds exempted by the code a 3x3 fillet welds it is Ok and enought or not?
Best Regards
AMinati
RE: Attachment welds at openings
Many tanks
AMinati
RE: Attachment welds at openings