NEBOSH Practice Test

What is a suitable fire extinguishing media for a computer room?

1. Water

2. Chemical powder

3. Carbon Dioxide (C02)

4. Foam

The correct answer is: Carbon Dioxide (C02)

In a computer room, the presence of sensitive electronic equipment makes it crucial to choose fire extinguishing media that will effectively put out fires without causing damage to the equipment. Carbon Dioxide (CO2) is particularly suited for this environment for several reasons. Firstly, CO2 extinguishers work by displacing oxygen around the fire, which is a critical element that fuels combustion. By reducing the oxygen concentration, CO2 effectively suffocates the fire. This method is especially effective for electrical fires, which are common in computer rooms, without leaving behind any residue that could harm delicate devices. Additionally, CO2 is non-conductive, meaning it can be used safely on live electrical appliances — a key consideration in environments where electronic equipment is operated. This makes it safer for both the equipment and personnel in the area. In contrast, water is not suitable due to its conductive properties and the potential for causing short circuits. Chemical powders and foam could also leave residues that might damage the computer equipment and require extensive cleanup. Thus, using CO2 is the most appropriate choice for effectively extinguishing fires in a computer room while minimizing risk to valuable electronic assets.