CWI WPS, PQR, and Welder Qualification 5

Question 1

A contractor uses an AWS D1.1 prequalified WPS for a structural steel project. Which statement about prequalified WPSs is correct?

Accepted Answer

They do not require testing if all prequalified conditions are met

Answer

AWS D1.1 prequalified WPSs are exempt from qualification testing provided all conditions listed in the prequalified requirements are strictly met.

Question 2

Under ASME Section IX, what is the minimum number of bend specimens required for procedure qualification of a groove weld?

Accepted Answer

Two side bend specimens (for material 3/4 inch or thicker)

Answer

For base metal 3/4 inch or thicker, ASME Section IX requires two side-bend test specimens; thinner material uses face and root bends instead.

Question 3

A welder's qualification record shows qualification with E7018 (F4) electrodes. Can this welder also use E6013 (F3) electrodes without requalification under ASME Section IX?

Accepted Answer

Yes, because qualification with a higher F-number qualifies for all lower F-numbers in the same base metal P-group

Answer

Under ASME Section IX, welder qualification with a higher F-number filler metal qualifies the welder to use any lower F-number filler metal of the same process.

Question 4

On a WPS, the term 'PWHT' refers to:

Accepted Answer

Post-Weld Heat Treatment applied after welding is complete

Answer

PWHT (Post-Weld Heat Treatment) is a controlled heating and cooling process applied to the weld after completion to relieve residual stresses and improve properties.

Question 5

Which of the following changes to a WPS would require a new PQR under AWS D1.1 structural welding?

Accepted Answer

Increasing the interpass temperature above the maximum listed in the WPS

Answer

Exceeding the maximum interpass temperature specified in the WPS/PQR is an essential variable change that may require requalification depending on the code requirements.

CWI Practice Test

CWI Practice Test

CWI WPS, PQR, and Welder Qualification 5