CITB Fire Prevention and Emergency

Question 1

What are the three elements of the fire triangle?

Accepted Answer

Heat, fuel, and oxygen

Answer

The fire triangle consists of heat (ignition source), fuel (combustible material), and oxygen (from air). A fire cannot start or continue to burn without all three elements present. Removing any one element will extinguish the fire.

Question 2

What colour is a water fire extinguisher?

Accepted Answer

Red with no colour band

Answer

A water fire extinguisher is all red (signal red) with no additional colour band or label. Water extinguishers are suitable for Class A fires (solid materials such as wood, paper, and textiles) but must NEVER be used on electrical or flammable liquid fires.

Question 3

On discovering a fire on a construction site, what is the correct order of actions?

Accepted Answer

Raise the alarm, evacuate to the assembly point, call the fire service

Answer

The correct procedure is: raise the alarm immediately (shout 'Fire!' and activate the nearest call point), evacuate via the nearest safe route to the designated assembly point, and call the emergency services (999). Only attempt to fight a small fire if trained and it is safe to do so.

Question 4

A CO2 fire extinguisher (black band) is most suitable for which type of fire?

Accepted Answer

Electrical equipment fires and flammable liquid fires

Answer

CO2 (carbon dioxide) extinguishers, identified by a black band, are ideal for electrical fires and flammable liquid fires (Class B). The CO2 displaces oxygen without leaving residue that could damage electrical equipment. They should not be used in confined spaces.

Question 5

What is a 'hot work permit' required for?

Accepted Answer

Work involving open flames, welding, cutting, or grinding that could start a fire

Answer

A hot work permit is a formal document required before carrying out any work that produces sparks, flames, or heat — such as welding, cutting, brazing, or grinding. It ensures fire precautions are in place, including fire watch, extinguishers, and clearing combustible materials.

CITB HS&E Operatives Practice Test

CITB HS&E Operatives Practice Test

CITB Fire Prevention and Emergency