Which statement describes how VT complements other NDT methods?

• A. VT complements other NDT methods by identifying surface indications or surface conditions that require follow-up with UT, RT, MT, or other techniques.
• B. VT replaces all other NDT methods.
• C. VT is only used for non-metal surfaces.
• D. VT checks chemical composition.

Answer: (A)

Visual testing serves as a practical first-look method that reveals surface indications and surface conditions, guiding where additional NDT is needed. By spotting cracks, corrosion, coating damage, misalignment, or other surface features, VT helps decide where to apply methods like UT, RT, or MT to further characterize or confirm indications. It doesn’t replace other techniques, nor does it assess chemical composition, and it isn’t limited to non-metal surfaces. Instead, it makes the overall inspection more efficient by triaging and directing subsequent testing.