CSA W47.1-09 CWB WELDING SUPERVISOR EXAM PRACTICE
QUESTIONS WITH VERIFIED ANSWERS AND EXPLANATIONS
1. Under CSA W47.1-09, the minimum acceptable percentage of
fillet weld break tests for a welding procedure qualification is:
A) 0%
B) 50%
C) 75%
D) 100%
Correct Answer: D
Explanation: Clause 12.2.2 – All fillet weld break test specimens
must show complete fusion and no slag inclusion or porosity along
the root; 100% of required specimens must pass.
2. The minimum frequency for radiographic testing of production
welds under the standard’s special provisions is:
A) 1% of welds
B) 10% of welds
C) 25% of welds
D) Not specified unless required by the fabricator’s quality control
plan
Correct Answer: D
*Explanation: W47.1-09 does not mandate a fixed frequency for
RT; it depends on the contract or the fabricator’s WPS/QC plan.*
,3. A welding supervisor must ensure that weld repairs are:
A) Done using any process
B) Performed only by the original welder
C) Performed using qualified procedures and welders
D) Avoided at all costs
Correct Answer: C
Explanation: Clause 18 – Repair welding must follow qualified WPS
and be done by certified welders.
4. Which of the following is the minimum duration of a welder’s
qualification under W47.1-09 if not used for 6 months?
A) Indefinite
B) 2 years
C) 6 months beyond last use
D) Qualification expires after 6 months of no use
Correct Answer: D
Explanation: Clause 14.1 – If a welder does not weld for more than
6 months, their qualification lapses.
5. The maximum allowable reinforcement height for a butt weld in
plate thickness of 12.7 mm (1/2 inch) is:
A) 1.6 mm
B) 3.2 mm
C) 4.8 mm
D) 2.5 mm
Correct Answer: B
*Explanation: CSA W59 (referenced by W47.1) limits
reinforcement to 1/8 in (3.2 mm) for plates under 3/4 inch.*
,6. A welding supervisor must ensure that preheat is applied when:
A) The base metal temperature is below 0°C
B) Thickness exceeds 25 mm for all steels
C) The WPS requires it
D) The welder requests it
Correct Answer: C
Explanation: Preheat requirements are defined in the qualified
WPS, not solely by ambient conditions.
7. In a fillet weld break test, acceptable indications are:
A) Cracks and porosity
B) Lack of fusion less than 1 mm
C) No slag or porosity visible to the unaided eye
D) Porosity only if it does not exceed 2% of the fracture surface
Correct Answer: C
Explanation: Clause 12.2.2 – The fractured surface must show
complete fusion, no slag, no porosity.
8. For a company to be certified under W47.1-09, a welding
supervisor must:
A) Be a P.Eng.
B) Pass a CWB welding supervisor examination
C) Have 10 years welding experience
D) Own the company
Correct Answer: B
Explanation: Clause 5.4 – The designated welding supervisor must
have successfully passed the CWB supervisor exam.
9. The standard requires that welding consumables be stored:
A) On the welding bench
, B) In a clean, dry area with temperature/humidity control per WPS
C) In an unheated shed
D) In original boxes only
Correct Answer: B
Explanation: Clause 10 – Proper storage prevents moisture pickup
and hydrogen cracking.
10. The maximum allowed interpass temperature for a low-
hydrogen process on Grade 350 steel is:
A) 150°C
B) 230°C
C) As specified by the WPS
D) Unlimited
Correct Answer: C
Explanation: Interpass temperature is part of the WPS, and W47.1
defers to the qualified WPS limits.
11. A welder qualification test coupon for SMAW on 10 mm
plate must be tested using:
A) Bend tests only
B) Radiography only
C) Visual plus bend or radiography per Clause 14.8
D) Macro-etch
Correct Answer: C
Explanation: Clause 14.8 – Bend tests (root and face) or
radiography are acceptable for plate tests.
12. If a welding supervisor finds a welder using wrong polarity,
he/she must:
A) Ignore it if weld looks good
QUESTIONS WITH VERIFIED ANSWERS AND EXPLANATIONS
1. Under CSA W47.1-09, the minimum acceptable percentage of
fillet weld break tests for a welding procedure qualification is:
A) 0%
B) 50%
C) 75%
D) 100%
Correct Answer: D
Explanation: Clause 12.2.2 – All fillet weld break test specimens
must show complete fusion and no slag inclusion or porosity along
the root; 100% of required specimens must pass.
2. The minimum frequency for radiographic testing of production
welds under the standard’s special provisions is:
A) 1% of welds
B) 10% of welds
C) 25% of welds
D) Not specified unless required by the fabricator’s quality control
plan
Correct Answer: D
*Explanation: W47.1-09 does not mandate a fixed frequency for
RT; it depends on the contract or the fabricator’s WPS/QC plan.*
,3. A welding supervisor must ensure that weld repairs are:
A) Done using any process
B) Performed only by the original welder
C) Performed using qualified procedures and welders
D) Avoided at all costs
Correct Answer: C
Explanation: Clause 18 – Repair welding must follow qualified WPS
and be done by certified welders.
4. Which of the following is the minimum duration of a welder’s
qualification under W47.1-09 if not used for 6 months?
A) Indefinite
B) 2 years
C) 6 months beyond last use
D) Qualification expires after 6 months of no use
Correct Answer: D
Explanation: Clause 14.1 – If a welder does not weld for more than
6 months, their qualification lapses.
5. The maximum allowable reinforcement height for a butt weld in
plate thickness of 12.7 mm (1/2 inch) is:
A) 1.6 mm
B) 3.2 mm
C) 4.8 mm
D) 2.5 mm
Correct Answer: B
*Explanation: CSA W59 (referenced by W47.1) limits
reinforcement to 1/8 in (3.2 mm) for plates under 3/4 inch.*
,6. A welding supervisor must ensure that preheat is applied when:
A) The base metal temperature is below 0°C
B) Thickness exceeds 25 mm for all steels
C) The WPS requires it
D) The welder requests it
Correct Answer: C
Explanation: Preheat requirements are defined in the qualified
WPS, not solely by ambient conditions.
7. In a fillet weld break test, acceptable indications are:
A) Cracks and porosity
B) Lack of fusion less than 1 mm
C) No slag or porosity visible to the unaided eye
D) Porosity only if it does not exceed 2% of the fracture surface
Correct Answer: C
Explanation: Clause 12.2.2 – The fractured surface must show
complete fusion, no slag, no porosity.
8. For a company to be certified under W47.1-09, a welding
supervisor must:
A) Be a P.Eng.
B) Pass a CWB welding supervisor examination
C) Have 10 years welding experience
D) Own the company
Correct Answer: B
Explanation: Clause 5.4 – The designated welding supervisor must
have successfully passed the CWB supervisor exam.
9. The standard requires that welding consumables be stored:
A) On the welding bench
, B) In a clean, dry area with temperature/humidity control per WPS
C) In an unheated shed
D) In original boxes only
Correct Answer: B
Explanation: Clause 10 – Proper storage prevents moisture pickup
and hydrogen cracking.
10. The maximum allowed interpass temperature for a low-
hydrogen process on Grade 350 steel is:
A) 150°C
B) 230°C
C) As specified by the WPS
D) Unlimited
Correct Answer: C
Explanation: Interpass temperature is part of the WPS, and W47.1
defers to the qualified WPS limits.
11. A welder qualification test coupon for SMAW on 10 mm
plate must be tested using:
A) Bend tests only
B) Radiography only
C) Visual plus bend or radiography per Clause 14.8
D) Macro-etch
Correct Answer: C
Explanation: Clause 14.8 – Bend tests (root and face) or
radiography are acceptable for plate tests.
12. If a welding supervisor finds a welder using wrong polarity,
he/she must:
A) Ignore it if weld looks good
