6G position

Date 03-27-2009 16:59

I have a question about clausule 4.8.1.1 D1,1 - 2008.
I qualificated a welder in position 6g Groove Weld
Diameter: 6 inch
Thickness: 7.5mm
The weld have undercut no more than 1mm for acumulated length up to 1 1/2 in.
According clausule 4.8.1.1 "Undercut shall not exceed 1/32 in (1 mm)". It means the weld pass but in the section 4, the code dont say nothing about undercut acumulate.
In this case, ¿Can I use tha table 6.1 of the section 6?

Best Regards.
Erik

By Kix

Date 03-27-2009 18:19

For welder performance qualification you refer to 4.30.1, tthen that refers you to 4.8.1, then that refers you to 4.8.1.1 and your done. You don't go to 6. anything. If he meets the VT criteria for 4.8.1.1, then he passes. Give him a pat on the back and bring in the next victim. ;-)

By DAYANARA (**)

Date 03-28-2009 00:22

For WPS and welder performance, maximum urdercut shall be exceed 1mm. for any lenght is acceptable.

Regards.

Dayanara

By viettq

Date 03-28-2009 02:35

Dear Erik,

I think if undercut is smooth, your test coupon pass. If undercut is sharp, your test coupon fail, irrespective of deep.

Regards
viet.tq