CWI Ultimate Review 2

Question 1

According to AWS D1.1, what is the minimum preheat temperature required for ASTM A514 steel (thickness > 2.5 in) when welding with SMAW?

Accepted Answer

225°F (107°C)

Answer

AWS D1.1 Table 4.5 requires a minimum preheat of 225°F (107°C) for A514 steel over 2.5 inches thick.

Question 2

Which discontinuity is characterized by a groove melted into the base metal adjacent to the weld toe and left unfilled?

Accepted Answer

Undercut

Answer

Undercut is a groove melted into the base metal at the weld toe or weld root that is left unfilled by weld metal.

Question 3

A welder qualification test plate is welded in the 2G position. Which position(s) does this qualify the welder to weld in production?

Accepted Answer

Flat and horizontal

Answer

A 2G groove weld qualification qualifies the welder for flat (1G) and horizontal (2G) positions only.

Question 4

What does the term 'effective throat' refer to in a fillet weld?

Accepted Answer

The shortest distance from the root to the face of a fillet weld, excluding convexity

Answer

The effective throat is the shortest distance from the joint root to the weld face, excluding any weld convexity.

Question 5

When inspecting a radiograph, a rounded indication with a length-to-width ratio of 3:1 or less is classified as:

Accepted Answer

A porosity indication

Answer

Rounded indications on radiographs have a length-to-width ratio of 3:1 or less and typically represent porosity or similar volumetric discontinuities.

CWI Practice Test

CWI Practice Test

CWI Ultimate Review 2