For weld procedure qualification, is it necessary to evaluate the groove type?
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Many supervisors say that the drawings lack detail drawings, which should be provided in the welding procedures. Many technicians also say that the absence of a joint diagram in the welding process indicates that the welding engineer is unqualified. May I ask, when conducting welding procedure qualification, does it require qualification for plate butt welding, tube butt welding, changes in groove angle, as well as for the grooves of nozzles and cylinders – whether they are of the inserted type or the set type? I’m a beginner in welding; I really don’t understand this. Please help me out, everyone.
The drawing does not include a node diagram; a welding procedure is necessary. The design may not include a node diagram. . Go and take a look at the evaluation rules to see what factor a change in the groove represents. . .
What is the changing factor for the groove modification? . . Which standard to look at?
Check ASME Volume 9; the groove shape is an important factor, and if it changes, the weld evaluation must be done again
Take a close look at the welding procedure qualification – it’s clear which parameter changes require re-evaluation
I didn’t read ASME IX carefully enough. .
I strongly disagree with the above answers; I studied welding in college, and my current job is also related to welding. First, the original poster should distinguish between concepts: welding procedure qualification, and the on-site welding documents such as WPS or welding work instructions WWI. 1) Customer requirements – this is the primary factor; it’s important to know whether your customers are in the EU, the United States, or within your own country. Different customers have different requirements, and so do the standards for process evaluation. 2) Going ahead, the most widely used standards are ASME, AWS, ISO, and GB. 3) As for specific welding methods, for example, ASME IX SMAW considers the shape of the weld joint to be a non-critical factor in welding. 4) To understand grooves and joint types, the original poster should take a look first – just click here
I strongly disagree with the above answers; I studied welding in college, and my current job is also related to welding. First, the original poster should distinguish between concepts: welding procedure qualification, and the on-site welding documents such as WPS or welding work instructions WWI. 1) Customer requirements – this is the primary factor; it’s important to know whether your customers are in the EU, the United States, or within your own country. Different customers have different requirements, and so do the standards for process evaluation. 2) Going ahead, the most widely used standards are ASME, AWS, ISO, and GB. 3) As for specific welding methods, for example, ASME IX SMAW considers the shape of the weld joint to be a non-critical factor in welding. 4) To understand grooves and joint types, the original poster should take a look first – just click here