Welder Qualification (Position) for Tank Shell Nozzles

[kagemaru05]

Good Day to all!,

I would like to request for clarification regarding the welder qualification (position) for API 650 Tank Nozzles

If a welder tested using a plate coupon in 2G & 3G position then he is qualified to weld both groove & fillet in F,H,V position as per QW-461.9. Can he weld shell nozzles with his current qualification?


Thanks

Kagemaru05

 

[fegenbush]

How has the welder demonstrated their ability to place a weld in the overhead position? This would apply to the bottom of the nozzle neck to the shell. I would recommend qualifying the welder with an additional 4G or 5G position.

 

[SectionIX]

Why not just qualify him on pipe in the 6G? This way he is completely covered for all diameters and positions for groove and fillets.

 

[kagemaru05]

SectionIX and fegenbush

Thank you for your reply,our subcontractor wasn't able to qualify their welders for the overhead position so I have a doubt. Now I would recommend them for the 6G position.