AWS AWS Welder Qualification & Procedure Testing 5

Question 1

A welder's certification under AWS D1.1 expires if the welder has not welded with the qualified process for more than:

Accepted Answer

6 months

Answer

AWS D1.1 Clause 4.5 states that a welder's qualification expires if they have not used the process for more than 6 months.

Question 2

Which of the following is NOT considered an essential variable for a welder qualification test under AWS D1.1?

Accepted Answer

Preheat temperature

Answer

Preheat temperature is an essential variable for WPS qualification but is generally not listed as an essential variable for welder performance qualification.

Question 3

When performing a nick-break test on a fillet weld, the acceptance criterion requires that the exposed fracture surface show:

Accepted Answer

Complete fusion with no porosity larger than 3/32 inch in any dimension

Answer

AWS D1.1 requires the nick-break fracture surface to show complete fusion and limits any single pore to 3/32 inch with restrictions on total porosity area.

Question 4

Under AWS D1.1, a welder who qualifies with FCAW-S (self-shielded) is also qualified to weld with:

Accepted Answer

FCAW-S only; it does not qualify FCAW-G

Answer

FCAW-S and FCAW-G are treated as separate processes under AWS D1.1 welder qualification because their shielding mechanisms differ.

Question 5

What does the 'F-number' classify in AWS welder and procedure qualification?

Accepted Answer

Filler metal groupings based on usability characteristics

Answer

F-numbers group filler metals by their usability and welding characteristics, allowing qualification with one filler to cover others in the same group.

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AWS AWS Welder Qualification & Procedure Testing 5