Confined Space Awareness UPDATED
ACTUAL Exam Questions and
CORRECT Answers
1. Which of the following is included but not limited to confided spaces?
A) Vessels
B) Tanks
C) Vaults
D) Trenches
E) All the Above - CORRECT ANSWER - E) All the above
How many times per year are rescue exercises conducted? - CORRECT ANSWER - At
least once
Many workers are injured and killed each year while working in confined spaces. An estimated
______ of the fatalities have been among the would-be rescuers. - CORRECT ANSWER -
60%
Studies reveal that every year approximately ______ preventable deaths occur in confined
spaces. - CORRECT ANSWER - 67
A space that meets the definition of a confined space and contains other recognized serious
safety and health hazards is what?
A) a confined space
B) a permit-required confined space
C) a non-permit-required confined space
D) not a confined space - CORRECT ANSWER - B) a permit-required confined space
,Entering a permit space can prove fatal for an employee when the O2 level is below ______ and
above _______ - CORRECT ANSWER - Below 19.5% and Above 23.5%
T/F: If oxygen level is above 23.5% by volume the environment becomes unstable and prone to
flash fires or explosion - CORRECT ANSWER - True
T/F: If oxygen level is below 16% by volume the environment becomes unstable and prone to
flash fires or explosion - CORRECT ANSWER - True
What is the correct order of atmospheric testing?
A) flammables, toxics, oxygen, other
B) toxics, oxygen, flammables, other
C) oxygen, toxics, flammables, other
D) oxygen, flammables, toxics, other - CORRECT ANSWER - D) oxygen, flammables,
toxics, other
Atmospheres that contain a flammable component above ______ % of its Lower Explosive Limit
are considered hazardous for confined space entry?
A) 5%
B) 10%
C) 20%
D) 30% - CORRECT ANSWER - B) 10%
Which cause of death claims the highest percentage in confined spaces?
A) Engulfment
B) Heat stress/exposure
C) Hazardous atmospheres
, D) Struck by falling objects - CORRECT ANSWER - C) Hazardous atmospheres
Cause of death % from hazardous atmospheres - CORRECT ANSWER - 65%
Cause of death % from engulfment - CORRECT ANSWER - 13%
Cause of death % from struck by falling objects - CORRECT ANSWER - 7%
Cause of death % from heat stress/exposure - CORRECT ANSWER - 6%
Cause of death % from other - CORRECT ANSWER - 4%
T/F: Confined spaces are large enough and so configured that an employee can bodily enter and
perform assigned work - CORRECT ANSWER - True
T/F: Confined spaces have limited or restricted means for entry or exit - CORRECT
ANSWER - True
T/F: Confined spaces are designed for continuous employee occupancy - CORRECT
ANSWER - False- not designed for continuous employee occupancy
T/F: Permit required confined spaces contain or have the potential to contain a hazardous
atmosphere - CORRECT ANSWER - True
T/F: Permit required confined spaces contain a material that has the potential for engulfing an
entrant - CORRECT ANSWER - True
ACTUAL Exam Questions and
CORRECT Answers
1. Which of the following is included but not limited to confided spaces?
A) Vessels
B) Tanks
C) Vaults
D) Trenches
E) All the Above - CORRECT ANSWER - E) All the above
How many times per year are rescue exercises conducted? - CORRECT ANSWER - At
least once
Many workers are injured and killed each year while working in confined spaces. An estimated
______ of the fatalities have been among the would-be rescuers. - CORRECT ANSWER -
60%
Studies reveal that every year approximately ______ preventable deaths occur in confined
spaces. - CORRECT ANSWER - 67
A space that meets the definition of a confined space and contains other recognized serious
safety and health hazards is what?
A) a confined space
B) a permit-required confined space
C) a non-permit-required confined space
D) not a confined space - CORRECT ANSWER - B) a permit-required confined space
,Entering a permit space can prove fatal for an employee when the O2 level is below ______ and
above _______ - CORRECT ANSWER - Below 19.5% and Above 23.5%
T/F: If oxygen level is above 23.5% by volume the environment becomes unstable and prone to
flash fires or explosion - CORRECT ANSWER - True
T/F: If oxygen level is below 16% by volume the environment becomes unstable and prone to
flash fires or explosion - CORRECT ANSWER - True
What is the correct order of atmospheric testing?
A) flammables, toxics, oxygen, other
B) toxics, oxygen, flammables, other
C) oxygen, toxics, flammables, other
D) oxygen, flammables, toxics, other - CORRECT ANSWER - D) oxygen, flammables,
toxics, other
Atmospheres that contain a flammable component above ______ % of its Lower Explosive Limit
are considered hazardous for confined space entry?
A) 5%
B) 10%
C) 20%
D) 30% - CORRECT ANSWER - B) 10%
Which cause of death claims the highest percentage in confined spaces?
A) Engulfment
B) Heat stress/exposure
C) Hazardous atmospheres
, D) Struck by falling objects - CORRECT ANSWER - C) Hazardous atmospheres
Cause of death % from hazardous atmospheres - CORRECT ANSWER - 65%
Cause of death % from engulfment - CORRECT ANSWER - 13%
Cause of death % from struck by falling objects - CORRECT ANSWER - 7%
Cause of death % from heat stress/exposure - CORRECT ANSWER - 6%
Cause of death % from other - CORRECT ANSWER - 4%
T/F: Confined spaces are large enough and so configured that an employee can bodily enter and
perform assigned work - CORRECT ANSWER - True
T/F: Confined spaces have limited or restricted means for entry or exit - CORRECT
ANSWER - True
T/F: Confined spaces are designed for continuous employee occupancy - CORRECT
ANSWER - False- not designed for continuous employee occupancy
T/F: Permit required confined spaces contain or have the potential to contain a hazardous
atmosphere - CORRECT ANSWER - True
T/F: Permit required confined spaces contain a material that has the potential for engulfing an
entrant - CORRECT ANSWER - True
