CANADIAN WELDING BUREAU
CWB Welding Inspector Level 1 — Certification Examination
Health & Safety Complete Question Bank
Exam Preparation
Academic Year: 2026/2027 CWB Level 1 · Health & Safety
Question 1
Which welding processes are most problematic for ozone generation?
A. GTAW, GMAW on aluminum, SS
B. SMAW and FCAW
C. Only GTAW
D. Only GMAW on carbon steel
CORRECT ANSWER A. GTAW, GMAW on aluminum, SS
RATIONALE Ozone is a particular problem in GTAW (gas tungsten arc welding) and
GMAW (gas metal arc welding) on aluminum and stainless steel. These processes produce
high levels of UV radiation that generate significant ozone.
, Question 2
What is the most common workplace hazard?
A. Noise
B. Chemical exposure
C. Radiation
D. Fall hazards
CORRECT ANSWER A. Noise
RATIONALE Noise is the most common workplace hazard. Many workers are exposed to
high noise levels in welding environments from grinding, cutting, and other equipment,
which can lead to hearing loss if not properly controlled.
Question 3
What does WHMIS cover regarding workplace hazards?
A. Covers toxins and chemicals but not physical agents
B. Covers all workplace hazards including physical agents
C. Covers only physical agents like noise and radiation
D. Covers only biological hazards
CORRECT ANSWER A. Covers toxins and chemicals but not physical agents
RATIONALE WHMIS covers toxins and chemicals in the workplace but does not cover
physical agents such as noise, radiation, or vibration. Physical agents are addressed by other
safety regulations and standards.
, Question 4
What is a Supplier Label?
A. Identifying label affixed to the container or package
B. A label used only for internal workplace use
C. A warning sign posted at the worksite entrance
D. A label applied to personal protective equipment
CORRECT ANSWER A. Identifying label affixed to the container or package
RATIONALE A Supplier Label is an identifying label affixed to the container or package of
a hazardous product by the supplier. It contains key information about the product's hazards
and safe handling.
Question 5
What is the major contaminant in all iron steel welding processes?
A. Iron Oxides
B. Chromium
C. Nickel
D. Manganese
CORRECT ANSWER A. Iron Oxides
RATIONALE Iron oxides are the major contaminant in all iron and steel welding processes.
They are produced when iron is heated and oxidized during welding, creating welding fume
that workers may inhale.
, Question 6
What is the purpose of WHMIS?
A. Information on hazardous materials is available to everyone in the workplace
B. To eliminate all hazardous materials from the workplace
C. To replace all safety data sheets with labels
D. To provide a standard for welding consumables
CORRECT ANSWER A. Information on hazardous materials is available to everyone in
the workplace
RATIONALE The purpose of WHMIS is to ensure that information on hazardous materials
is available to everyone in the workplace, enabling workers to understand the risks and
handle materials safely.
Question 7
What is the function of an Opaque panel and curtain in welding?
A. Blocks all radiation
B. Provides ventilation
C. Reduces noise levels
D. Provides thermal insulation
CORRECT ANSWER A. Blocks all radiation
RATIONALE An opaque panel and curtain blocks all radiation emitted by welding arcs. It
is used to create complete barriers between welding areas and other work areas to protect
against all forms of arc radiation.
CWB Welding Inspector Level 1 — Certification Examination
Health & Safety Complete Question Bank
Exam Preparation
Academic Year: 2026/2027 CWB Level 1 · Health & Safety
Question 1
Which welding processes are most problematic for ozone generation?
A. GTAW, GMAW on aluminum, SS
B. SMAW and FCAW
C. Only GTAW
D. Only GMAW on carbon steel
CORRECT ANSWER A. GTAW, GMAW on aluminum, SS
RATIONALE Ozone is a particular problem in GTAW (gas tungsten arc welding) and
GMAW (gas metal arc welding) on aluminum and stainless steel. These processes produce
high levels of UV radiation that generate significant ozone.
, Question 2
What is the most common workplace hazard?
A. Noise
B. Chemical exposure
C. Radiation
D. Fall hazards
CORRECT ANSWER A. Noise
RATIONALE Noise is the most common workplace hazard. Many workers are exposed to
high noise levels in welding environments from grinding, cutting, and other equipment,
which can lead to hearing loss if not properly controlled.
Question 3
What does WHMIS cover regarding workplace hazards?
A. Covers toxins and chemicals but not physical agents
B. Covers all workplace hazards including physical agents
C. Covers only physical agents like noise and radiation
D. Covers only biological hazards
CORRECT ANSWER A. Covers toxins and chemicals but not physical agents
RATIONALE WHMIS covers toxins and chemicals in the workplace but does not cover
physical agents such as noise, radiation, or vibration. Physical agents are addressed by other
safety regulations and standards.
, Question 4
What is a Supplier Label?
A. Identifying label affixed to the container or package
B. A label used only for internal workplace use
C. A warning sign posted at the worksite entrance
D. A label applied to personal protective equipment
CORRECT ANSWER A. Identifying label affixed to the container or package
RATIONALE A Supplier Label is an identifying label affixed to the container or package of
a hazardous product by the supplier. It contains key information about the product's hazards
and safe handling.
Question 5
What is the major contaminant in all iron steel welding processes?
A. Iron Oxides
B. Chromium
C. Nickel
D. Manganese
CORRECT ANSWER A. Iron Oxides
RATIONALE Iron oxides are the major contaminant in all iron and steel welding processes.
They are produced when iron is heated and oxidized during welding, creating welding fume
that workers may inhale.
, Question 6
What is the purpose of WHMIS?
A. Information on hazardous materials is available to everyone in the workplace
B. To eliminate all hazardous materials from the workplace
C. To replace all safety data sheets with labels
D. To provide a standard for welding consumables
CORRECT ANSWER A. Information on hazardous materials is available to everyone in
the workplace
RATIONALE The purpose of WHMIS is to ensure that information on hazardous materials
is available to everyone in the workplace, enabling workers to understand the risks and
handle materials safely.
Question 7
What is the function of an Opaque panel and curtain in welding?
A. Blocks all radiation
B. Provides ventilation
C. Reduces noise levels
D. Provides thermal insulation
CORRECT ANSWER A. Blocks all radiation
RATIONALE An opaque panel and curtain blocks all radiation emitted by welding arcs. It
is used to create complete barriers between welding areas and other work areas to protect
against all forms of arc radiation.
