4A (A4) Introduction to Plant and Fire
Safety Exam Questions and Answers
100% Pass
The extiguishing medium for a class "D" fire is: - ANSWER-Dry Powder.
During an injury related investigation by an Occupational Health and Safety
officer, work being done at the site may be suspended:
A) indefinitely
B) until the officer arrives at the scene
C) for a maximum of 48 hours
D) long enough to attend to the victim
E) until any serious safety hazards are corrected - ANSWER-E) until any serious
safety hazards are corrected
Individual responsibilities for health and safety must be borne by: - ANSWER-All
personnel in a work place.
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, If an area contains hazardous concentrations of flammable gases or vapours under
normal operating conditions, electrical equipment must be designed for use in the
area. This is designated as: - ANSWER-Class 1.
A safe work permit for cold work is intended for: - ANSWER-Work that will
usually not cause a fire.
A class "A" fire would invole: - ANSWER-Wood or coal.
The valve cap on a gas cylinder: - ANSWER-Protects the cylinder valve from
damage.
To prevent the formation of explosive mixtures, oxygen and acetylene cylinders
should be: - ANSWER-Stored in seperate areas.
What is the first step in eliminating hazards in an energy plant? - ANSWER-
Identify the hazards.
The type of fire extinguisher usually used on a live electrical fire is a/an: -
ANSWER-Carbon Dioxide extinguisher.
Fire pumps usually start automatically with a signal from: - ANSWER-Fire main
pressure.
Which is a function of a joint health and safety committee? - ANSWER-Deal with
safety concerns of the workers.
©️COPYRIGHT 2025, ALL RIGHTS RESERVED. 2
Safety Exam Questions and Answers
100% Pass
The extiguishing medium for a class "D" fire is: - ANSWER-Dry Powder.
During an injury related investigation by an Occupational Health and Safety
officer, work being done at the site may be suspended:
A) indefinitely
B) until the officer arrives at the scene
C) for a maximum of 48 hours
D) long enough to attend to the victim
E) until any serious safety hazards are corrected - ANSWER-E) until any serious
safety hazards are corrected
Individual responsibilities for health and safety must be borne by: - ANSWER-All
personnel in a work place.
©️COPYRIGHT 2025, ALL RIGHTS RESERVED. 1
, If an area contains hazardous concentrations of flammable gases or vapours under
normal operating conditions, electrical equipment must be designed for use in the
area. This is designated as: - ANSWER-Class 1.
A safe work permit for cold work is intended for: - ANSWER-Work that will
usually not cause a fire.
A class "A" fire would invole: - ANSWER-Wood or coal.
The valve cap on a gas cylinder: - ANSWER-Protects the cylinder valve from
damage.
To prevent the formation of explosive mixtures, oxygen and acetylene cylinders
should be: - ANSWER-Stored in seperate areas.
What is the first step in eliminating hazards in an energy plant? - ANSWER-
Identify the hazards.
The type of fire extinguisher usually used on a live electrical fire is a/an: -
ANSWER-Carbon Dioxide extinguisher.
Fire pumps usually start automatically with a signal from: - ANSWER-Fire main
pressure.
Which is a function of a joint health and safety committee? - ANSWER-Deal with
safety concerns of the workers.
©️COPYRIGHT 2025, ALL RIGHTS RESERVED. 2
