Confined Space Training Certificate Confined Space Definition & Hazards

Question 1

What is the legal definition of a confined space under the Confined Spaces Regulations 1997?

Accepted Answer

Any place that is substantially enclosed and where there is a reasonably foreseeable specified risk

Answer

Any underground area that requires a ladder to enter

Answer

Any room with only one exit

Answer

Any area where two or more people cannot work simultaneously

Question 2

Which of the following is NOT listed as a specified risk under the Confined Spaces Regulations 1997?

Accepted Answer

Slipping on a wet floor

Answer

Loss of consciousness due to oxygen deficiency

Answer

Drowning in a free-flowing liquid

Answer

Fire or explosion

Question 3

At what percentage of oxygen in the atmosphere is a confined space considered oxygen deficient?

Accepted Answer

Below 19.5%

Answer

Below 21%

Answer

Below 17%

Answer

Below 15%

Question 4

Which gas is heavier than air and can accumulate at the bottom of a confined space?

Accepted Answer

Carbon dioxide

Answer

Methane

Answer

Hydrogen

Answer

Ammonia

Question 5

What is engulfment in the context of confined space hazards?

Accepted Answer

Being submerged or buried by a free-flowing solid or liquid material

Answer

Being overcome by toxic fumes

Answer

Being trapped by a structural collapse

Answer

Being unable to escape due to a locked exit

Question 6

A sewer is an example of a confined space because it is substantially enclosed and presents which specific hazard?

Accepted Answer

Toxic atmosphere from hydrogen sulphide and methane

Answer

Extreme cold temperatures

Answer

High voltage electricity

Answer

Falling from height