A basic guide to fire extinguishers

Common extinguishers in Hong Kong include water, foam, dry powder, carbon dioxide and clean-agent types. Each has specific uses and limitations. Never guess from colour alone when electricity, flammable liquids or cooking oils are involved.

Selection and use should follow the premises risk, approval requirements, cylinder label and manufacturer instructions. An untrained person should not attempt to use equipment when the fire type or extinguisher suitability is uncertain.

Only consider using an extinguisher on a very small, incipient fire when you are trained, the extinguisher is suitable, a clear safe exit is behind you and you will not be exposed to smoke. If any condition is absent, leave and call 999.

Stop immediately if the fire grows, smoke develops, one attempt does not control it or you feel unsafe. Never let the fire get between you and the exit, and do not go back for another extinguisher.

Confirm that the extinguisher is in its designated place, clearly marked and accessible. Look for rust, deformation, leaks or damage to the cylinder, hose, nozzle, handle and safety pin. Where a gauge is fitted, it should be within the manufacturer's specified range.

Do not open, discharge, refill or repair a cylinder yourself. Statutory inspection, pressure testing and disposal must follow the applicable requirements. A limited exemption for certain voluntarily installed domestic equipment must not be assumed to apply elsewhere.