WELDER QUALIFICATION - SITUATION 1

[Claytonsilva]

WELDER 01
WELDER QUALIFICATION Nº 01 (RANGE QUALIFIED):
P NUMBER: P1 À P11, P34, P41 À 47
Ø PIPE: ? 1"
F NUMBER: 6
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SITUATION
P NUMBER: 10H (DUPLEX)
Ø PIPE: 1"
F NUMBER: N.A. (THE FILLER METAL HAS NOT F NUMBER)
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DOES WELDER 01 QUALIFIED FOR THIS SITUATION, ACCORD ASME IX?

 

[metengr]

Base material and OD size are compliant. What is the weld deposit thickness range? This is also an essential welding variable. Please review ASME Section IX.

 

[stanweld]

F No. is an essential variable for welder qualification. Review QW-404.15 and QW-354 thru Qw-357.

 

[Claytonsilva]

I know F number is an essential variable like another variables that I didn't mention.
I just wanna know if the welder qualified F number 6 can weld a filler metal without F number, assuming that the other variables it´s correct.
And if possible, where I find this in ASME?

Thanks the attention

 

[metengr]

Claytonsilva;
No, a welder currently qualified to weld with F-No 6 cannot weld using an unidentified filler metal, review ASME Section IX, QW-350 (these list the essential variables for welder performance qualification, and F-No change for filler metal is an essential welding variable for performance qualification, as mentioned above).

A welder could weld with any unidentified F-no weld rod (even coat hanger wire) provided the welder either qualified a weld procedure specification for using this filler metal or has run a coupon to qualify for this specific filler metal composition using a WPS that was qualified for this filler metal composition.

 

[Claytonsilva]

Metengr,
About this situation,
QW-356 (GTAW) - Essential Variables

QW-404.15 Change of F-number
QW-404.15 A change from one F-Number in table QW-432 to any other F-Number or to any other filler metal, except as permitted in QW-433

I understood, the F-number has changed, F-number 6 to unidentified filler metal, but ASME doen´t explain about unidentified filler metal or does?

 

[metengr]

It does, really. An F-No 6 filler metal qualification cannot be used on a filler metal that does not have an F-No or does not belong to an AWS Specification. All you need to do is to qualify a weld procedure with this unique filler metal and the welder will be qualified to weld with this filler metal for your project. For other welders, they can run a coupon using this WPS and they are qualified for using this filler metal.