Which statement best describes post-weld non-destructive examination (NDE) requirements?

Which statement best describes post-weld non-destructive examination (NDE) requirements?

• A. Visual inspection only
• B. Dimensional checks only
• C. NDE requirements in addition to visual and dimensional criteria
• D. Surface roughness measurement only

Answer: (C)

Post-weld assessment relies on non-destructive examination to find flaws that surface checks can miss. Visual inspection and dimensional criteria cover what you can see and measure on the surface—conditions like surface defects, alignment, and weld size. But many issues, such as porosity, lack of fusion, cracks, or inclusions inside the weld metal or heat-affected zone, aren’t visible to the eye or detectable by simple measurements. NDE uses methods like radiography, ultrasonic testing, magnetic particle testing, or dye penetrant testing to reveal these hidden flaws. Codes and job specifications often require NDE to be performed in addition to visual and dimensional criteria, especially for critical welds. So the most complete description is that NDE requirements accompany, and are added to, the visual and dimensional checks.

Post-weld assessment relies on non-destructive examination to find flaws that surface checks can miss. Visual inspection and dimensional criteria cover what you can see and measure on the surface—conditions like surface defects, alignment, and weld size. But many issues, such as porosity, lack of fusion, cracks, or inclusions inside the weld metal or heat-affected zone, aren’t visible to the eye or detectable by simple measurements. NDE uses methods like radiography, ultrasonic testing, magnetic particle testing, or dye penetrant testing to reveal these hidden flaws. Codes and job specifications often require NDE to be performed in addition to visual and dimensional criteria, especially for critical welds. So the most complete description is that NDE requirements accompany, and are added to, the visual and dimensional checks.