![]() Getting back to the original subject, one RT shot is taken for the gap and this will show any lack of root fusion if it is evident. The person/s who wrote the specifications should be taken out and shot (after a public flogging). ![]() What do they say about a little knowledge can be dangerous ? We have got weld encroachments from ASME VIII being applied to API 650 Tanks and B31.3 piping.We have got production test plates from ASME VIII being applied to API 650 and B31.3 piping.We have got B31.3 percentages of RT applied to API 650 tanks. There is another posting on the forum regarding specifications and the way they are written and interpreted. This then does not comply with our specifications and must be cut off.I am pulling my hair out. So, you could start with a 1.8 mm gap which complies with B31.3 but after welding the shrinkage has taken it down to 1mm gap. B31.3 Fig 328.5.2C shows a minimum gap before welding of 1/16 (1.6 mm) which should be checked before welding.(There is no tolerance for after welding - this subject has been dealt with extensively in a previous posting.) However, our engineer/s have in their wisdom decided that it will be 1.6 mm minimum after welding and RT will be performed after welding.This is written into the specifications. Good morning all, We have been regularly shooting socket welds on my current project to determine the presence of a gap but with a slight difference.
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