The number and type of fire extinguishers needed depends on the fire hazard. The fire risk assessment will identify the hazards. The primary purpose of a fire extinguisher is to aid escape from a fire. In some limited circumstances they may be used by a trained person to fight fires in the early stages.
The fire extinguisher should be suitable for the potential fire :- water For wood/paper/textile and solid material powder For liquid and electrical fires foam For liquid fires Carbon dioxide For liquid and electrical fires Fire extinguishers should be located at identifiable fire points at each storey exit and these should be serviced and maintained. Fire extinguishers will also be needed for those carrying out hot work.