1
CWB Level 2 Visual Welding Inspector
Exam Canadian Welding Bureau
Certification Actual Exam 2026/2027 with
Detailed Rationales | Complete Exam-Style
Questions | Pass Guaranteed – A+ Graded
TABLE OF CONTENTS
Section 1 Welding Terminology & Fundamentals Q1 – Q10
Section 2 Visual Inspection & Discontinuity Recognition Q11 – Q23
Section 3 Welding Standards & Acceptance Criteria Q24 – Q33
Section 4 Visual Inspection Tools & Techniques Q34 – Q40
Section 5 NGN-Style Case Analysis & Integrated Scenarios Q41 – Q50
Instructions: Choose the single best answer unless otherwise indicated as
Select-All-That-Apply (SATA). Pass threshold: 38 correct answers out
of 50 within 90 minutes.
══════════════════════════════════════
SECTION 1: WELDING TERMINOLOGY & FUNDAMENTALS —
Q1 – Q10
══════════════════════════════════════
,2
Question 1 of 50
During a shop inspection of a pressure vessel fabrication, you observe a
groove weld where the weld metal does not extend completely through
the joint thickness at the root. The drawing specifies complete joint
penetration (CJP). Which term correctly identifies this condition?
A. Incomplete penetration
B. Lack of fusion
C. Underfill
D. Concavity
Correct Answer: A
Rationale: Incomplete penetration (also called incomplete joint
penetration) occurs when the weld metal fails to fill the entire cross-
section of the joint root, which is exactly what is described in this CJP
requirement scenario. Lack of fusion refers to failure of the weld metal
to fuse with the base metal or previous pass surfaces, not specifically the
root depth issue, while underfill and concavity describe surface profile
deficiencies rather than root penetration problems.
Question 2 of 50
A welder is performing a fillet weld in the 4G position on a structural
steel column-to-beam connection. You are asked to verify that the
welding position designation is correct according to AWS terminology.
What does the 4G position represent in groove welding?
,3
A. Horizontal fixed position with the axis of the weld horizontal
B. Overhead position with the weld deposited from underneath
C. Vertical-up or vertical-down progression on a vertical surface
D. Horizontal rolled position where the pipe or cylinder rotates
Correct Answer: B
Rationale: According to AWS A3.0 Standard Welding Terms and
Definitions, the 4G position refers to the overhead groove weld position
where welding is performed from beneath the joint. Option A describes
2G (horizontal), option C describes 3G (vertical), and option D describes
1G (flat/rolled), making these common position confusion traps on the
CWB exam.
Question 3 of 50
While reviewing radiographic film of a butt weld in a pipeline, you
identify numerous small, spherical gas pockets scattered throughout the
weld metal. These discontinuities appear dark (radiolucent) on the film
and have smooth, rounded contours. How should you classify this type
of discontinuity?
A. Slag inclusion
B. Porosity
C. Tungsten inclusion
D. Cracks
, 4
Correct Answer: B
Rationale: Porosity is characterized by spherical or elongated gas
cavities trapped in the weld metal during solidification, appearing as
rounded, dark indications on radiographs due to lower density than
surrounding metal. Slag inclusions typically have irregular, jagged
shapes; tungsten inclusions appear as very bright (radiopaque) small
spots; and cracks appear as sharp, linear dark indications with distinct
edges—none of which match the described spherical, scattered pattern.
Question 4 of 50
A structural steel fabricator submits a WPS (Welding Procedure
Specification) for your review. The procedure calls for an E7018
electrode on an ASTM A572 Grade 50 base material. Based on the AWS
electrode classification system, what does the "18" suffix indicate about
this electrode's coating characteristics?
A. Low hydrogen potassium coating with basic slag system usable in all
positions with AC or DCEP
B. High cellulose potassium coating designed for deep penetration in flat
and horizontal positions only
C. Rutile titanium oxide coating providing smooth bead appearance with
AC or any polarity
D. Iron powder addition exceeding 35% of coating weight for high
deposition rates
CWB Level 2 Visual Welding Inspector
Exam Canadian Welding Bureau
Certification Actual Exam 2026/2027 with
Detailed Rationales | Complete Exam-Style
Questions | Pass Guaranteed – A+ Graded
TABLE OF CONTENTS
Section 1 Welding Terminology & Fundamentals Q1 – Q10
Section 2 Visual Inspection & Discontinuity Recognition Q11 – Q23
Section 3 Welding Standards & Acceptance Criteria Q24 – Q33
Section 4 Visual Inspection Tools & Techniques Q34 – Q40
Section 5 NGN-Style Case Analysis & Integrated Scenarios Q41 – Q50
Instructions: Choose the single best answer unless otherwise indicated as
Select-All-That-Apply (SATA). Pass threshold: 38 correct answers out
of 50 within 90 minutes.
══════════════════════════════════════
SECTION 1: WELDING TERMINOLOGY & FUNDAMENTALS —
Q1 – Q10
══════════════════════════════════════
,2
Question 1 of 50
During a shop inspection of a pressure vessel fabrication, you observe a
groove weld where the weld metal does not extend completely through
the joint thickness at the root. The drawing specifies complete joint
penetration (CJP). Which term correctly identifies this condition?
A. Incomplete penetration
B. Lack of fusion
C. Underfill
D. Concavity
Correct Answer: A
Rationale: Incomplete penetration (also called incomplete joint
penetration) occurs when the weld metal fails to fill the entire cross-
section of the joint root, which is exactly what is described in this CJP
requirement scenario. Lack of fusion refers to failure of the weld metal
to fuse with the base metal or previous pass surfaces, not specifically the
root depth issue, while underfill and concavity describe surface profile
deficiencies rather than root penetration problems.
Question 2 of 50
A welder is performing a fillet weld in the 4G position on a structural
steel column-to-beam connection. You are asked to verify that the
welding position designation is correct according to AWS terminology.
What does the 4G position represent in groove welding?
,3
A. Horizontal fixed position with the axis of the weld horizontal
B. Overhead position with the weld deposited from underneath
C. Vertical-up or vertical-down progression on a vertical surface
D. Horizontal rolled position where the pipe or cylinder rotates
Correct Answer: B
Rationale: According to AWS A3.0 Standard Welding Terms and
Definitions, the 4G position refers to the overhead groove weld position
where welding is performed from beneath the joint. Option A describes
2G (horizontal), option C describes 3G (vertical), and option D describes
1G (flat/rolled), making these common position confusion traps on the
CWB exam.
Question 3 of 50
While reviewing radiographic film of a butt weld in a pipeline, you
identify numerous small, spherical gas pockets scattered throughout the
weld metal. These discontinuities appear dark (radiolucent) on the film
and have smooth, rounded contours. How should you classify this type
of discontinuity?
A. Slag inclusion
B. Porosity
C. Tungsten inclusion
D. Cracks
, 4
Correct Answer: B
Rationale: Porosity is characterized by spherical or elongated gas
cavities trapped in the weld metal during solidification, appearing as
rounded, dark indications on radiographs due to lower density than
surrounding metal. Slag inclusions typically have irregular, jagged
shapes; tungsten inclusions appear as very bright (radiopaque) small
spots; and cracks appear as sharp, linear dark indications with distinct
edges—none of which match the described spherical, scattered pattern.
Question 4 of 50
A structural steel fabricator submits a WPS (Welding Procedure
Specification) for your review. The procedure calls for an E7018
electrode on an ASTM A572 Grade 50 base material. Based on the AWS
electrode classification system, what does the "18" suffix indicate about
this electrode's coating characteristics?
A. Low hydrogen potassium coating with basic slag system usable in all
positions with AC or DCEP
B. High cellulose potassium coating designed for deep penetration in flat
and horizontal positions only
C. Rutile titanium oxide coating providing smooth bead appearance with
AC or any polarity
D. Iron powder addition exceeding 35% of coating weight for high
deposition rates
