CWI WPS, PQR, and Welder Qualification 4

Question 1

Under ASME Section IX, what is an F-number used to classify?

Accepted Answer

Filler metals grouped by usability characteristics

Answer

F-numbers in ASME Section IX classify filler metals by their usability characteristics to reduce the number of qualification tests required.

Question 2

A welder qualified using GTAW process wants to also work using SMAW on the same project. What must occur?

Accepted Answer

The welder must qualify separately using the SMAW process

Answer

Each welding process requires separate welder qualification because the skills required to operate GTAW and SMAW are distinct.

Question 3

During a procedure qualification test, a transverse tensile specimen fails at 68,000 psi. The base metal minimum specified tensile strength is 70,000 psi. What is the result?

Accepted Answer

The test passes if the fracture occurred in the base metal away from the weld

Answer

Under AWS D1.1, a tensile test that fails below the required minimum but fractures in the base metal may still be acceptable per code provisions.

Question 4

What does the 'A-number' classify in ASME Section IX?

Accepted Answer

The deposited weld metal analysis (chemical composition)

Answer

A-numbers in ASME Section IX classify deposited weld metal according to its chemical composition for procedure qualification purposes.

Question 5

A WPS qualified with GTAW root and SMAW fill/cap passes for a carbon steel groove weld. If the contractor wants to use GTAW for all passes, what is required?

Accepted Answer

A new PQR supporting a full GTAW WPS must be qualified

Answer

Using GTAW for all passes constitutes a change in the combination of processes, requiring a new or additional PQR to support the revised WPS.

CWI Practice Test

CWI Practice Test

CWI WPS, PQR, and Welder Qualification 4