Which of the following best describes a confined space?

• Any large open area on a building site

• Any place that is substantially enclosed and poses a risk to health

• Any outdoor workspace

• Any area smaller than 10 square metres

Which of these is NOT an example of a confined space?

• Sewer

• Storage tank

• Open car park

• Silo

Which gas is most commonly linked with oxygen depletion in confined spaces?

• Carbon dioxide

• Nitrogen

• Hydrogen

• Argon

What is the main danger of working in an area with reduced oxygen?

• Eye irritation

• Asphyxiation

• Noise exposure

• Fatigue

Which of the following is a common hazard found in confined spaces?

• Fresh air ventilation

• Flooding or engulfment

• Natural light

• Noise from traffic

What should always be done before anyone enters a confined space?

• Start work immediately

• Test the atmosphere and complete a risk assessment

• Switch off all lighting

• Wait for supervisor approval only

Which regulation specifically covers working in confined spaces?

• Health and Safety at Work Act 1974

• Confined Spaces Regulations 1997

• Control of Substances Hazardous to Health 2002

• Manual Handling Operations Regulations 1992

What is one of the first steps in preparing to work in a confined space?

• Ventilating the area and isolating hazards

• Entering to check the temperature

• Waiting for others to finish

• Starting work without PPE

What type of injury could result from a confined space collapse?

• Minor bruising

• Crushing or trauma injuries

• Frostbite

• Sunburn

Which of the following gases is highly flammable and poses an explosion risk?

• Methane

• Nitrogen

• Helium

• Oxygen