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Code Book Application Flashcards

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

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  1. Under AWS D1.1, what is the maximum length of a single acceptable rounded indication in a groove weld inspected by RT, for a weld in base metal 3/4 inch thick?

    Answer: 3/16 inch (4.8 mm)

    AWS D1.1 limits individual rounded indications in RT to a maximum of t/4 for metal up to 1 inch thick, so for 3/4 inch base metal the limit is 3/16 inch.

  2. Per AWS D1.1, when must weld tabs (run-off tabs) be removed after welding?

    Answer: Only when specified by the engineer of record

    AWS D1.1 requires removal of weld tabs only when specified by the engineer; if not specified, the contractor may leave them in place.

  3. In ASME Section IX, what is the purpose of the P-number system for base metals?

    Answer: To group metals with similar welding characteristics to reduce the number of qualifications required

    ASME P-numbers group base metals with similar welding characteristics so that qualifying a WPS on one metal in the group qualifies it for all metals in that group.

  4. According to AWS D1.1, what condition exists when weld discontinuities are evaluated using the 'limitations on accumulation' rule in RT inspection?

    Answer: Indications clustered within a 12-inch weld length exceed 2 inches total

    AWS D1.1 applies an accumulation rule that rejects when the total length of acceptable indications in any 12-inch weld length exceeds 2 inches, preventing clustered marginal defects.

  5. Under AWS D1.1, a complete joint penetration groove weld made from one side without backing requires which testing to confirm full fusion at the root?

    Answer: RT or UT to verify root fusion

    CJP welds made from one side without backing require RT or UT to verify complete root fusion since visual inspection cannot reveal subsurface root defects.

  6. Per AWS D1.1, what is the maximum groove angle permitted for a single-V groove weld in a prequalified joint design (flat position)?

    Answer: No maximum; only minimum angle is specified

    AWS D1.1 prequalified joint designs specify minimum groove angles to ensure access for welding but do not impose a maximum angle limit.

  7. When AWS D1.1 requires a 'CVN test' as a supplemental essential variable, what property does this test measure?

    Answer: Notch toughness (impact energy absorbed at a specified temperature)

    The Charpy V-Notch (CVN) test measures the notch toughness of weld metal by determining the energy absorbed when a notched specimen is fractured at a specified temperature.