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Confined Space Safety

Total questions: 15

Worksheet time: 15mins

Name
Class
Date
1.

Which of the following is not a characteristic of a confined space?

a)
Enclosed by walls
b)
Limited access points
c)
Poor ventilation
d)
Open to the environment
2.

A confined space has a risk to life due to:

a)

Inadequate air supply

b)
Excessive lighting
c)
High humidity levels
d)
Loud noises
3.

What is a common hazard associated with working in a confined space?

a)

Chemical exposure

b)

Slips and falls

c)

Electrical hazards

d)

All of the above

4.

What type of training is essential for workers who enter confined spaces?

a)

Customer service training

b)

Fire safety training

c)

First aid training

d)

Confined space entry training

5.

What is the primary purpose of a confined space entry permit?

a)

To schedule maintenance

b)

To provide training records

c)

To document the work performed

d)

To ensure safety measures are in place

6.

Which of the following is a common method for monitoring air quality in confined spaces?

a)

Visual inspection

b)

Gas detection equipment

c)

Noise level assessment

d)

Temperature measurement

7.

What should be done before entering a confined space?

a)

Notify the supervisor

b)

Wear personal protective equipment

c)

All of the above

d)

Conduct a risk assessment

8.

Which of the following is considered a hazardous atmosphere in confined spaces?

a)
Presence of toxic gases, flammable vapors, or insufficient oxygen levels.
b)
High humidity levels
c)
Presence of clean air and adequate ventilation
d)
Presence of harmless dust particles
9.

The acceptable range for oxygen levels in a confined space is:

a)
24% to 26%
b)
15% to 18%
c)
19.5% to 23.5%
d)
30% to 35%
10.

A proper emergency plan must include:

a)

Entertainment setup

b)

Only contact information

c)

Communication, liaison, rescue and drills

d)

A suggestion box

11.

Which device helps ensure safe breathing in toxic atmospheres?

a)
Air purifier
b)
Oxygen tank
c)
Respirator
d)
Gas mask
12.

What is the maximum acceptable level for flammable gases in confined space (% LEL)?

a)
5% LEL
b)
15% LEL
c)
20% LEL
d)
10% LEL
13.

PEL values refer to:

a)

Permissible Exposure Limits

b)

Potential Environmental Losses

c)

Permissible Emission Limits

d)

Personal Exposure Levels

14.

Why are natural ventilation systems not enough in confined spaces?

a)
Natural ventilation systems are not enough in confined spaces due to limited airflow and inadequate pollutant removal.
b)
Natural ventilation systems require no maintenance or monitoring.
c)
Natural ventilation systems eliminate all pollutants without assistance.
d)
Natural ventilation systems are highly effective in confined spaces.
15.

What must be done to machinery before entry into a confined space?

a)
Leave the machinery running
b)
Perform routine maintenance
c)
Shut down, lock out, and tag out the machinery.
d)
Inspect the machinery without shutting it down