Online Access Free API-577 Practice Test

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

• A.12 in. (300 mm)
• B.36 in. (900 mm)
• C.6 in. (150 mm)
• D.24 in.(600 mm)

What is the major cause of lack of fusion in all welding processes involving carbon steel?

• A.Not using a low hydrogen electrode or improper shielding
• B.Inadequate preheat
• C.Improper heat input and improper welding technique
• D.Improper welding speed

A limitation of a stud arc welding (SW) process is:

• A.Process is primarily suitable for only carbon steel and low alloy steels.
• B.Weld is not visible during the welding process.
• C.Process is limited to a flat position.
• D.Welding rates are significantly lower than those obtained with SMAW.

What is the purpose of a PQR?

• A.To establish the properties of the weldment.
• B.To establish a welder's capability to make a quality weld.
• C.To provide direction to the welder making production welds.
• D.To document that a welder has correctly followed a WPS.

Steels usually require both preheat and PWHT if they have a carbon equivalent higher than:

• A.0.45
• B.0.35
• C.0.55
• D.0.50