CWI Practical Visual Inspection 3

Question 1

When inspecting a groove weld with a specified minimum reinforcement, the CWI should verify that the crown height:

Accepted Answer

Meets the minimum required and does not exceed the maximum allowed by the applicable code

Answer

Weld reinforcement must meet minimum requirements for complete fill while not exceeding maximum limits, as excessive reinforcement can concentrate stress.

Question 2

Arc strikes outside the weld area are considered a defect primarily because they:

Accepted Answer

Can create hard, brittle spots and stress risers in the base metal

Answer

Arc strikes create localized rapid heating and quenching that can produce hard martensite and microcracks in the base metal, especially in high-carbon steels.

Question 3

A CWI is examining a pipe weld root pass from the ID (inside diameter). The root bead should be checked for:

Accepted Answer

Burn-through, incomplete fusion, and root concavity

Answer

The root pass ID inspection checks for burn-through (excessive melt-through), lack of fusion, and root concavity, all of which are rejectable discontinuities.

Question 4

What does the term 'cold lap' refer to in visual weld inspection?

Accepted Answer

Incomplete fusion between a weld bead and the base metal or previous bead

Answer

Cold lap (a form of overlap/incomplete fusion) occurs when the molten weld metal rolls over the base metal without achieving fusion.

Question 5

When visually inspecting weld spatter, a CWI should be concerned if the spatter:

Accepted Answer

Interferes with required NDE or violates code acceptance criteria

Answer

Spatter is evaluated based on whether it impairs required nondestructive examination or violates specific code acceptance criteria for the application.

CWI Practice Test

CWI Practice Test

CWI Practical Visual Inspection 3