Certified Welder Welding Codes and Standards Questions and Answers

Question 1

What is the fundamental difference between a Welding Procedure Specification (WPS) and a Procedure Qualification Record (PQR)?

Accepted Answer

A PQR documents the actual results of a test weld, which then provides the basis for writing the instructional WPS.

Answer

A WPS is used for production welds, while a PQR is only for welder training.

Answer

A WPS lists the exact variables used in a single test, while a PQR provides an acceptable range of variables.

Answer

A PQR is created by the welder on the job site, whereas a WPS is created by an engineering department.

Question 2

A welder is fabricating a large structural steel column for a new high-rise building in the United States. Which code is most likely to govern the welding requirements for this application?

Accepted Answer

AWS D1.1

Answer

API 1104

Answer

ASME Section IX

Answer

MIL-STD-2219

Question 3

According to most major welding codes, which of the following is considered an essential variable for a welder's performance qualification, meaning a change would require the welder to requalify?

Accepted Answer

A change in welding progression from vertical-up to vertical-down.

Answer

A change in the brand of E7018 electrode, provided the AWS classification is the same.

Answer

A minor adjustment to the travel speed within the range specified by the WPS.

Answer

A change in the type of grinding disc used for interpass cleaning.

Question 4

An inspector is overseeing the joining of two sections of a cross-country natural gas transmission pipeline. Which welding code is specifically developed for this type of application?

Accepted Answer

API 1104 Welding of Pipelines and Related Facilities

Answer

AWS D1.5 Bridge Welding Code

Answer

ASME B31.1 Power Piping

Answer

AWS D17.1 Specification for Fusion Welding for Aerospace Applications

Question 5

What is the primary purpose of a Welder Performance Qualification (WPQ) test?

Accepted Answer

To verify a welder's ability to produce a sound weld by following a qualified WPS.

Answer

To establish the mechanical properties of a new welding procedure.

Answer

To set the approved amperage and voltage ranges for a production weld.

Answer

To determine the most cost-effective filler metal for a specific joint.

Question 6

Under the rules of ASME Section IX, a welder who qualifies to perform a groove weld on a plate in the 3G (vertical up) position is also qualified for which other groove weld positions on plate?

Accepted Answer

The 1G (flat), 2G (horizontal), and 3G (vertical) positions.

Answer

Only the 3G position.

Answer

The 1G (flat), 2G (horizontal), 3G (vertical), and 4G (overhead) positions.

Answer

All positions, including 5G and 6G on pipe.