WCL Inspection & Quality Control 5

Question 1

A weld map is used in quality control to:

Accepted Answer

Identify and locate all welds in a fabrication for traceability

Answer

A weld map identifies the location and designation of all welds in a fabrication, enabling traceability between welds and the inspectors, procedures, and welders associated with them.

Question 2

What is the primary purpose of performing a bend test on a weld?

Accepted Answer

To evaluate ductility and soundness of the weld

Answer

Bend tests evaluate the ductility of the weld and heat-affected zone and reveal internal discontinuities such as lack of fusion or porosity that open under bending stress.

Question 3

According to AWS D1.1, which of the following requires a visual inspection before welding begins?

Accepted Answer

Joint fit-up, cleanliness, and alignment

Answer

Pre-weld visual inspection verifies that joint fit-up, alignment, root opening, cleanliness, and other variables meet the requirements of the WPS before welding starts.

Question 4

Slag inclusions in a weld are most commonly caused by:

Accepted Answer

Improper interpass cleaning between weld passes

Answer

Slag inclusions result from failure to completely remove slag between weld passes, allowing solidified flux or slag to be trapped by subsequent passes.

Question 5

What is the significance of the 'essential variable' concept in AWS D1.1 procedure qualification?

Accepted Answer

Changing an essential variable requires requalification of the WPS

Answer

Essential variables are welding parameters that, when changed beyond prescribed limits, require requalification of the WPS because they can significantly affect weld mechanical properties.

(WCL) Welding Certification Los Angeles Practice Test

(WCL) Welding Certification Los Angeles Practice Test

WCL Inspection & Quality Control 5