CWB WELDING INSPECTOR
ADVANCED STUDY GUIDE 2026/2027
QUESTIONS AND ANSWERS
1. According to CSA W47.1, what is the primary responsibility of a Level 2 welding inspector
compared to a Level 1?
A. Level 1 inspectors are the only ones permitted to write new Welding Procedure
Specifications (WPS).
B. Level 2 inspectors are only permitted to perform non-destructive testing such as RT and
UT.
C. Level 2 inspectors are responsible for the management of the company’s entire quality
control department.
D. Level 2 inspectors can perform independent visual inspections and sign off on reports,
whereas Level 1s require supervision.
Answer: D
Conceptual Explanation: Under CSA W178.2, a Level 2 inspector is qualified to work
without direct supervision and can assume responsibility for the inspection results, while a
Level 1 must be supervised by a Level 2 or 3.
,2. Which metallurgical phase is most desirable for toughness in the Heat Affected Zone (HAZ)
of a low-alloy steel weldment?
A. Fine-grained Ferrite and Pearlite
B. Coarse-grained Bainite
C. Martensite
D. Austenite
Answer: A
Conceptual Explanation: A fine-grained microstructure, typically achieved through
controlled cooling or post-weld heat treatment, provides the best balance of strength and
notch toughness.
3. In the Carbon Equivalent (CE) formula, which element has the greatest influence on the
weldability and risk of hydrogen cracking?
A. Manganese
B. Carbon
C. Chromium
D. Nickel
Answer: B
Conceptual Explanation: Carbon has the most significant impact on the hardness and
crack sensitivity of the steel, which is why it is the primary factor in all CE formulas.
, 4. What is the specific purpose of the ‘Bakepot’ or electrode oven when storing E7018
electrodes?
A. To improve the strike voltage of the electrode.
B. To prevent the absorption of moisture which leads to hydrogen-induced cracking.
C. To keep the flux coating soft for better deposition.
D. To increase the carbon content of the weld metal.
Answer: B
Conceptual Explanation: Low-hydrogen electrodes like E7018 are hygroscopic and must
be kept dry to prevent hydrogen from entering the weld pool.
5. Which welding process utilizes a non-consumable electrode and an inert shielding gas?
A. GMAW
B. SMAW
C. GTAW
D. FCAW
Answer: C
Conceptual Explanation: Gas Tungsten Arc Welding (GTAW) uses a non-consumable
tungsten electrode and inert gas (usually Argon).
ADVANCED STUDY GUIDE 2026/2027
QUESTIONS AND ANSWERS
1. According to CSA W47.1, what is the primary responsibility of a Level 2 welding inspector
compared to a Level 1?
A. Level 1 inspectors are the only ones permitted to write new Welding Procedure
Specifications (WPS).
B. Level 2 inspectors are only permitted to perform non-destructive testing such as RT and
UT.
C. Level 2 inspectors are responsible for the management of the company’s entire quality
control department.
D. Level 2 inspectors can perform independent visual inspections and sign off on reports,
whereas Level 1s require supervision.
Answer: D
Conceptual Explanation: Under CSA W178.2, a Level 2 inspector is qualified to work
without direct supervision and can assume responsibility for the inspection results, while a
Level 1 must be supervised by a Level 2 or 3.
,2. Which metallurgical phase is most desirable for toughness in the Heat Affected Zone (HAZ)
of a low-alloy steel weldment?
A. Fine-grained Ferrite and Pearlite
B. Coarse-grained Bainite
C. Martensite
D. Austenite
Answer: A
Conceptual Explanation: A fine-grained microstructure, typically achieved through
controlled cooling or post-weld heat treatment, provides the best balance of strength and
notch toughness.
3. In the Carbon Equivalent (CE) formula, which element has the greatest influence on the
weldability and risk of hydrogen cracking?
A. Manganese
B. Carbon
C. Chromium
D. Nickel
Answer: B
Conceptual Explanation: Carbon has the most significant impact on the hardness and
crack sensitivity of the steel, which is why it is the primary factor in all CE formulas.
, 4. What is the specific purpose of the ‘Bakepot’ or electrode oven when storing E7018
electrodes?
A. To improve the strike voltage of the electrode.
B. To prevent the absorption of moisture which leads to hydrogen-induced cracking.
C. To keep the flux coating soft for better deposition.
D. To increase the carbon content of the weld metal.
Answer: B
Conceptual Explanation: Low-hydrogen electrodes like E7018 are hygroscopic and must
be kept dry to prevent hydrogen from entering the weld pool.
5. Which welding process utilizes a non-consumable electrode and an inert shielding gas?
A. GMAW
B. SMAW
C. GTAW
D. FCAW
Answer: C
Conceptual Explanation: Gas Tungsten Arc Welding (GTAW) uses a non-consumable
tungsten electrode and inert gas (usually Argon).
