CWB Welding Inspector Level 1
Certification Exam 2026/2027
Study Guide | Practice
Questions & Detailed
Rationales for Welding
Inspection Success Guaranteed
Pass (GRADED A+)
Question 1
What is the primary responsibility of a welding inspector?
A. Perform weld repairs
B. Supervise production workers
C. Verify compliance with applicable codes and standards
D. Design welding procedures
Answer: C. Verify compliance with applicable codes and
standards
Rationale: The welding inspector's primary role is to ensure that
welding activities, materials, procedures, and completed welds
comply with applicable codes, standards, and project
specifications.
,Question 2
Which document provides detailed instructions for producing a
weld?
A. Inspection Report
B. Welding Procedure Specification (WPS)
C. Material Test Report
D. Welder Qualification Record
Answer: B. Welding Procedure Specification (WPS)
Rationale: A WPS outlines the welding variables, materials,
techniques, and parameters required to produce an acceptable
weld.
Question 3
What is the purpose of a Procedure Qualification Record
(PQR)?
A. Qualify welding inspectors
B. Document production welds
C. Record the results of welding procedure qualification tests
D. Identify weld discontinuities
Answer: C. Record the results of welding procedure
qualification tests
,Rationale: A PQR contains the actual test results and essential
variables used during qualification of a welding procedure.
Question 4
Which discontinuity is characterized by molten weld metal
flowing onto the base metal without fusion?
A. Porosity
B. Undercut
C. Overlap
D. Crack
Answer: C. Overlap
Rationale: Overlap occurs when weld metal extends beyond the
weld toe without proper fusion to the base material.
Question 5
What is the most common non-destructive testing (NDT)
method used during visual weld inspection?
A. Radiographic Testing
B. Ultrasonic Testing
C. Visual Testing
D. Eddy Current Testing
Answer: C. Visual Testing
, Rationale: Visual testing is the first and most frequently used
inspection method because it is economical and effective in
detecting many surface discontinuities.
Question 6
What is undercut?
A. A cavity caused by trapped gas
B. A groove melted into the base metal adjacent to the weld toe
C. Excessive reinforcement
D. Lack of penetration at the root
Answer: B. A groove melted into the base metal adjacent to the
weld toe
Rationale: Undercut reduces the cross-sectional thickness of the
base material and may decrease structural integrity.
Question 7
Which instrument is commonly used to measure weld size and
reinforcement?
A. Micrometer
B. Vernier Caliper
C. Bridge Cam Gauge
D. Dial Indicator
Answer: C. Bridge Cam Gauge
Certification Exam 2026/2027
Study Guide | Practice
Questions & Detailed
Rationales for Welding
Inspection Success Guaranteed
Pass (GRADED A+)
Question 1
What is the primary responsibility of a welding inspector?
A. Perform weld repairs
B. Supervise production workers
C. Verify compliance with applicable codes and standards
D. Design welding procedures
Answer: C. Verify compliance with applicable codes and
standards
Rationale: The welding inspector's primary role is to ensure that
welding activities, materials, procedures, and completed welds
comply with applicable codes, standards, and project
specifications.
,Question 2
Which document provides detailed instructions for producing a
weld?
A. Inspection Report
B. Welding Procedure Specification (WPS)
C. Material Test Report
D. Welder Qualification Record
Answer: B. Welding Procedure Specification (WPS)
Rationale: A WPS outlines the welding variables, materials,
techniques, and parameters required to produce an acceptable
weld.
Question 3
What is the purpose of a Procedure Qualification Record
(PQR)?
A. Qualify welding inspectors
B. Document production welds
C. Record the results of welding procedure qualification tests
D. Identify weld discontinuities
Answer: C. Record the results of welding procedure
qualification tests
,Rationale: A PQR contains the actual test results and essential
variables used during qualification of a welding procedure.
Question 4
Which discontinuity is characterized by molten weld metal
flowing onto the base metal without fusion?
A. Porosity
B. Undercut
C. Overlap
D. Crack
Answer: C. Overlap
Rationale: Overlap occurs when weld metal extends beyond the
weld toe without proper fusion to the base material.
Question 5
What is the most common non-destructive testing (NDT)
method used during visual weld inspection?
A. Radiographic Testing
B. Ultrasonic Testing
C. Visual Testing
D. Eddy Current Testing
Answer: C. Visual Testing
, Rationale: Visual testing is the first and most frequently used
inspection method because it is economical and effective in
detecting many surface discontinuities.
Question 6
What is undercut?
A. A cavity caused by trapped gas
B. A groove melted into the base metal adjacent to the weld toe
C. Excessive reinforcement
D. Lack of penetration at the root
Answer: B. A groove melted into the base metal adjacent to the
weld toe
Rationale: Undercut reduces the cross-sectional thickness of the
base material and may decrease structural integrity.
Question 7
Which instrument is commonly used to measure weld size and
reinforcement?
A. Micrometer
B. Vernier Caliper
C. Bridge Cam Gauge
D. Dial Indicator
Answer: C. Bridge Cam Gauge
