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Practical Visual Inspection 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.

Read the first 7 Practical Visual Inspection flashcards as text

  1. What is the maximum visual inspection distance specified by most codes for direct visual examination?

    Answer: 24 inches (600 mm)

    Most codes, including AWS D1.1, limit direct visual examination to a maximum distance of 24 inches (600 mm) from the examination surface.

  2. A CWI finds a crater crack at the end of a weld bead. What is the most common cause of this type of crack?

    Answer: Rapid solidification and shrinkage of the molten pool when the arc is abruptly stopped

    Crater cracks form when the arc is stopped abruptly, causing the unfilled crater to shrink and crack during rapid solidification.

  3. When inspecting the fit-up of a butt joint before welding, the CWI should verify that the root opening is:

    Answer: Within the tolerances specified by the WPS and applicable code

    Root opening must be within the tolerances of the approved WPS and code, as too little or too much opening affects penetration and fit-up quality.

  4. A weld inspector notices that a welder has been welding without the specified preheat. What should the inspector do?

    Answer: Stop welding immediately and require preheat to be established before continuing

    Preheat is a mandatory WPS requirement; if it is not being maintained, welding must stop immediately until the required temperature is established.

  5. Which visual inspection technique is specifically used to detect surface-breaking discontinuities that are difficult to see with the naked eye by flooding the weld with light at a low angle?

    Answer: Raking (oblique) lighting technique

    Raking or oblique lighting casts shadows from even small surface irregularities, making fine surface-breaking cracks and discontinuities more visible.

  6. In visual inspection, 'incomplete joint penetration' (IJP) in a full-penetration groove weld is indicated by:

    Answer: A visible groove or unfused area along the weld root when viewed from the back side

    IJP appears as an unfused groove, channel, or void along the weld root, visible when inspected from the backside or root side of the joint.

  7. After completing a visual inspection and identifying a rejectable discontinuity, the CWI should:

    Answer: Mark the location, document the discontinuity, and issue a formal nonconformance report

    Any rejectable discontinuity must be formally documented with its location marked and a nonconformance report issued to initiate the repair/disposition process.