API-577 Welding Inspection and Metallurgy Exam Questions and Answers

Minimize the number of performance qualifications.

Minimize the number of welding procedure qualifications.

Define the welding characteristics.

Designate similar chemical compositions.

Steels that have a carbon equivalent below 0.30.

Cellulosic-type electrodes to reduce penetration.

Low-hydrogen consumables and electrodes.

Low-hydrogen root pass and cellulosic weld out.

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.

bevel face.

bevel angle.

groove angle.

groove face.

Accept them if nonessential variable.

Reject them.

Re-qualify the WPS.

Accept them if the markings are corrected.

Radiographic examination is not allowed.

The entire weld circumference for pipe coupon.

36 in. for welder operator qualification.

6 in. for welder qualification.

Impact testing

There is no single test

Weld tension tests

Bend testing

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.

Use larger diameter electrodes.

Minimize weaving the bead.

Maximize weaving the bead.

Use high heat input.

WPQ to verify that the welder is qualified to perform the welding, given its position and process.

WPQ to verify that the specification in use is correct.

PQR to verify that the welder is qualified to perform the welding, given its position and process.

WPS to verify that the welder is qualified to perform the welding, given its position and process.

The surface of a joint member included in the groove.

A separation at the joint root between the work pieces.

The beveled surface of the joint members.

That portion of the groove face adjacent to the joint root.

Reduce travel speed

Provide proper heat input

Avoid excessive weaving

Use proper joint design

Interpass temperature control is not needed.

There is less susceptibility to cracking from contaminants.

There is less susceptibility to lack of fusion.

The weld pool tends to be sluggish.

Arc drift.

Arc strike.

Arc blow.

Arc deflection.

Selenium 75

Cobalt 60

Iridium 192

X-ray machine

WPS/PQR aspects of in-service welding.

Technical aspects of hot tapping.

Safety aspects of in-service welding.

Weldability aspects of in-service welding.

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.

Ground to a smooth contour.

Cleaned down to the bare metal.

Cleaned to remove surface scale and flux.

Clean, flat area or even flush with the base metal.

Deposition rates are lower than GMAW.

The process cannot be used in areas of limited access.

It has low tolerance for contaminants.

The process is sensitive to wind and draft.

The percentage of carbon that will be in the completed weld

The as-rolled hardness of the welding components

The carbon equivalent of the steel

The rate of cooling after the welding is completed

Longitudinal groove

Incomplete fusion

Under fill

Undercut

Pulsed droplet transfer

Short circuiting transfer

Globular transfer

Spray transfer

Under low humidity conditions.

In warm holding ovens.

In sealed plastic containers.

In tightly sealed ovens.

2 in. (5.1 cm)

3 in. (7.6 cm)

4 in. (10.2 cm)

6 in. (15.2 cm)

Short circuiting transfer

Pulsed droplet transfer

Globular transfer

Spray transfer

1 ft. (300 mm)

2 ft. (600 mm)

3 ft. (900 mm)

4 ft. (1200 mm)

In weld metal at the point where the arc terminates.

In the HAZ at the point where the arc initiates.

In weld metal at the point where the arc initiates.

In the HAZ at the point where the arc terminates.

Welding process used and AWS classification numbers.

Welding process used and P-numbers of coupon welded.

P-numbers of coupon welded and AWS classification numbers.

Electrode-flux class and electrical characteristics.

Reduce travel speed

Proper shielding

Lower heat input

Arc length control

Ductility test

Guided bend test

Notch toughness test

Tension test