[MW:8122] weld thicness

Dear All,

I need your valuable information/comment on following case.

There is a situation where 2 welders are qualified to weld 12mm thick. Ifthe job thickness is 20 mm and dia, say is 36", contractor  divide the joint  in half. First simultaneously, each will weld approx 10mm thick including root half the circum, as they are qualified in 12 mm only. Then the interchange their location and they will complete the remaining  welding. Basically these 2 welders who are qualified upto 12 mm are welding 20mm thickness joint, but at any given location they are welding 10mm thickness.

 

Is this practice is acceptable.

 

Regards,

 

Ahmed H.