Welder qualified

Hi Experts,
A welder is qualified acc to WPS of project and the second welder is qualified acc to other WPS but same process and all variable essential.

So, can the second welder welding for that project or not ?

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Please detail project specification requirement and standard for qualification???

Hi Anh Bien,
Project specification is not mention, standard is ASME IX.

The second welder can assign to weld product, if make sure all welding variables of welder performance in QW-416 are unchanged.

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Hi ANh Bien,
Any standard for this reference. I need to proof to client.Many Thank.

subdivided QW-416 in ASME Section IX

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Hi Anh Bien,
I found this reference, my client accepted for this.
image

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Yes, this statement specified in QW-304.

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Hi Experts,
Welder position to be qualified at 3G , may be qualified to 6G ?

Should qualify at higher level 6G for pipe, 3G/4G for plate…

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