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AWS D1.1 Structural Welding Code Flashcards

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  1. Under AWS D1.1, what is the purpose of a procedure qualification record (PQR)?

    Answer: To provide test data confirming that the welding variables produce a weld with the required mechanical properties

    A PQR documents the actual welding variables used during procedure qualification testing and the mechanical test results (tensile, bend, impact if required) that confirm the WPS produces acceptable weld quality.

  2. AWS D1.1 requires that prequalified WPS groove joint root openings for single-V groove welds (without backing) not exceed:

    Answer: 1/8 inch

    For prequalified single-V groove welds without backing, AWS D1.1 tolerates root opening up to 1/8 inch; larger root openings require backing or procedure qualification testing.

  3. Non-destructive examination (NDE) for radiographic testing (RT) under AWS D1.1 is required for which weld joints on cyclically loaded structures?

    Answer: All CJP groove welds in tension transverse to the primary stress

    AWS D1.1 requires RT or UT on all CJP groove welds in tension in cyclically loaded structures, to detect internal discontinuities that could initiate fatigue cracks under repeated loading.

  4. The maximum interpass temperature allowed under AWS D1.1 for carbon steel (without special Engineer approval) is typically:

    Answer: 450°F (230°C)

    AWS D1.1 limits interpass temperature to 450°F (230°C) maximum for carbon steel to control heat input, prevent excessive grain growth, and maintain required mechanical properties.

  5. Under AWS D1.1, groove angle and root face tolerances for fit-up verification of prequalified joints are the responsibility of:

    Answer: The Welding Inspector (CWI) on behalf of the contractor, before welding begins

    The Certified Welding Inspector (CWI) acting for the contractor verifies that joint fit-up (groove angle, root opening, root face) meets prequalified or WPS-specified tolerances before welding begins.

  6. AWS D1.1 prohibits tack welds from being incorporated into final welds unless they:

    Answer: Meet the WPS requirements and are visually accepted before being incorporated

    Tack welds incorporated into final welds must meet the same WPS requirements (preheat, electrode type, qualified welder) and must be visually inspected and accepted before being covered by subsequent passes.