Welding Inspection and Metallurgy Exam (API-577) Practice Test

Questions # 21:

What is the minimum liquid level that should be maintained above the area that is to be hot tapped on a storage tank or vessel?

Options:

1 ft. (300 mm)

2 ft. (600 mm)

3 ft. (900 mm)

4 ft. (1200 mm)

Questions # 22:

When verifying that the filler metal selection is appropriate for the base metal being welded, an inspector should consider:

Options:

Chemical composition.

Tensile strength to be higher than the base metal.

Acceptability of physical properties.

Need for postweld heat treatment (PWHT).

Questions # 23:

Rules for qualifying welding operators using radiography on a production weld require what minimum weld length to be examined?

Options:

6 in. (150 mm)

12 in. (300 mm)

24 in.(600 mm)

36 in. (900 mm)

Questions # 24:

What is a discontinuity?

Options:

An interruption in the normal physical structure of a material.

An imperfection which is detectable with NDE.

The response or evidence from the application of NDE.

A departure of a quality characteristic from its intended condition.

Questions # 25:

Codes/standards sometimes specify impact testing of weldments at minimum design metal temperatures to:

Options:

Assure that the welded material has sufficient yield strength to avoid brittle fracture.

Assure that the welded material has sufficient ductility to assist brittle fracture.

Assure that the welded material has sufficient toughness to resist brittle fracture.

Assure that the welded material has sufficient tensile strength to avoid failure at design loads.

Questions # 26:

Which of the following has the lowest range of welding currents and electrode diameters associated with the GMAW process?

Options:

Short circuiting transfer

Pulsed droplet transfer

Globular transfer

Spray transfer

Questions # 27:

What is a sensitized microstructure in austenitic stainless steels?

Options:

An area next to the heat-affected zone that has suffered some softening and loss of strength.

The microstructure of the weld that has been melted and will therefore have properties more like a casting than the base metal.

An area near the heat-affected zone affected by welding that may experience intergranular corrosion.

The high residual stress zone adjacent to the weld fusion line that will have higher hardness than the weld or base material.

Questions # 28:

For design purposes, the maximum usefulness of a weldment under test is based upon the:

Options:

Yield strength.

Hardness.

Ultimate tensile strength.

Toughness.

Questions # 29:

What does an AWS classification number identify?

Options:

Electrode diameter and strength

Electrodes and welding rods

Chemical composition of the deposited weld metal

Base metal and group number

Questions # 30:

Which of the following is not usually an essential variable on a WPS form?

Options:

Welding technique

Groove design

Base metal

Welding position

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