CWI WPS and PQR Qualification 4

Question 1

Under ASME Section IX, if a WPS lists SMAW in the flat position and a welder qualifies using SMAW in the vertical position, which production welding positions are the welder qualified for?

Accepted Answer

Flat, horizontal, and vertical positions

Answer

Per ASME Section IX QW-461, qualification in the vertical (3G) position qualifies the welder for flat, horizontal, and vertical positions.

Question 2

A WPS written for SMAW using E7018 electrodes. If the manufacturer changes and the new E7018 electrode has a different coating formulation, does the WPS require requalification?

Accepted Answer

No, because the AWS classification number is unchanged

Answer

Under ASME Section IX, the controlling factor is the F-Number and AWS classification, not the manufacturer; the same classification from a different manufacturer does not require requalification.

Question 3

Under ASME Section IX, which of the following changes to a GTAW WPS constitutes an essential variable requiring requalification?

Accepted Answer

Changing from DCEN to DCEP

Answer

A change in current type or polarity (e.g., DCEN to DCEP) is an essential variable for GTAW under ASME Section IX QW-409.

Question 4

A PQR qualifies a WPS for base metal 0.25 inches thick. What is the MINIMUM production base metal thickness the WPS covers under ASME Section IX QW-451?

Accepted Answer

0.0625 inch

Answer

For a PQR test coupon of 0.25 inch, the minimum qualified production thickness is 1/16 inch (the absolute minimum), as the lower limit is T/2 but not less than 1/16 inch.

Question 5

Under AWS D1.1, a prequalified WPS requires which of the following for the inspector to accept the procedure?

Accepted Answer

Documentation that all prequalified joint, process, and material requirements are met

Answer

A prequalified WPS under AWS D1.1 requires written documentation demonstrating compliance with all prequalified requirements; no test coupon PQR is needed.

CWI Practice Test

CWI Practice Test

CWI WPS and PQR Qualification 4