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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. What does a 'discontinuity' differ from a 'defect' in weld quality terminology?

    Answer: A discontinuity is any interruption in material structure; a defect is a discontinuity that exceeds acceptance criteria

    A discontinuity is any interruption in the typical structure; it becomes a defect only when it exceeds the applicable code's acceptance criteria.

  2. Which nondestructive testing method is best suited for detecting subsurface laminar cracks in base metal plates before welding?

    Answer: Ultrasonic testing (UT)

    Ultrasonic testing can detect subsurface laminations and other internal flaws in base metal that are not accessible to surface-only methods.

  3. A weld procedure qualification test plate is tested with two face bends and two root bends. How many total specimens must pass to qualify the procedure?

    Answer: All four specimens must pass

    All required bend specimens must meet acceptance criteria — no failures are permitted for the procedure qualification to be valid.

  4. A welder qualification test record (WQR) must be maintained by which party?

    Answer: The employer or contractor who tested the welder

    Per AWS D1.1, the employer or contractor is responsible for maintaining the welder's qualification test records.

  5. In AWS D1.1, what is the minimum preheat temperature typically required for ASTM A572 Grade 50 plate greater than 1-1/2 inches thick?

    Answer: 225°F (107°C)

    AWS D1.1 Table 4.5 requires a minimum preheat of 225°F for quenched and tempered and medium-to-high strength steels above 1-1/2 inch thickness.

  6. A welder performing a pipe qualification test in the 6GR position is qualifying for which type of application?

    Answer: Restricted-access pipe joints requiring welding at an angle with restricted clearance

    The 6GR (R = restricted) position simulates tight-clearance pipe connections like those found in nuclear and pressure piping where access is limited.

  7. What action should a welding inspector take upon discovering a crack in a completed structural weld?

    Answer: Reject the weld and require complete removal and rewelding per an approved repair procedure

    Cracks are never acceptable in structural welds — they must be completely removed and the area rewelded following an approved repair procedure.