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Welder Testing & Quality Assurance Flashcards

7 cards from real AWS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Welder Testing & Quality Assurance flashcards as text

  1. Which document records all of the essential and nonessential variables used during a procedure qualification test?

    Answer: Procedure Qualification Record (PQR)

    The PQR is the document that records the actual welding variables used during the procedure qualification test and certifies that the WPS has been successfully tested.

  2. A reduced-section tensile specimen fails in the base metal away from the weld. This result indicates:

    Answer: The weld is at least as strong as the base metal and the test is acceptable

    Fracture in the base metal away from the weld zone proves the weld metal and HAZ are at least as strong as the base metal, which is an acceptable result.

  3. What is the primary purpose of a preheat requirement before welding?

    Answer: To reduce the cooling rate and minimize hydrogen-induced cracking in the heat-affected zone

    Preheat slows the cooling rate of the weld and HAZ, reducing hardness and allowing hydrogen to diffuse out, preventing hydrogen-induced cold cracking.

  4. Liquid penetrant testing (PT) is limited to detecting which type of discontinuities?

    Answer: Surface-open discontinuities only

    Liquid penetrant testing relies on capillary action drawing the penetrant into surface-breaking openings, so it cannot detect subsurface flaws.

  5. A welder is qualified on 3/8-inch plate in the 3G position. What is the maximum base metal thickness this qualification covers for groove welds?

    Answer: 3/4 inch

    Under AWS D1.1, qualifying on plate 3/16 inch through 3/4 inch covers base metal thickness up to twice the test thickness, so 3/8-inch test plate qualifies up to 3/4 inch.

  6. What type of weld discontinuity appears as a white elongated streak parallel to the weld axis on a radiograph?

    Answer: Incomplete penetration

    Incomplete penetration (IP) appears as a continuous or intermittent white line at the weld root on a radiograph because the unfused gap is less dense than surrounding metal.

  7. When visually inspecting a completed fillet weld, which measurement tool is used to verify the actual throat size?

    Answer: Fillet weld gauge (weld size gauge)

    A fillet weld gauge is specifically designed to measure the leg length and effective throat of fillet welds quickly and accurately.