Question

Describe in which situation the following fire extinguishers are used: Water (Red Label), Powder (Purple Label) and Carbon Dioxide (Black Label). (150 words)​

Answer 1

Step-by-step explanation:

1. Water (Red Label): Water fire extinguishers are effective against Class A fires, which involve common combustible materials like wood, paper, fabric, and plastics. They work by cooling the fire and depriving it of the heat necessary to sustain combustion. Water extinguishers should not be used on fires involving flammable liquids, electrical equipment, or cooking oil as water can spread the fire or pose electrical hazards.
2. Powder (Purple Label): Powder fire extinguishers, often filled with dry chemical agents like ABC or BC powder, are versatile and can be used on multiple types of fires. They are effective against Class A, B, and C fires. Class A fires involve common combustible materials, Class B fires involve flammable liquids, and Class C fires involve energized electrical equipment. Powder extinguishers work by smothering the fire and interrupting the chemical reaction necessary for combustion. However, they can create a significant mess and may not be suitable for use in enclosed spaces or around sensitive equipment.
3. Carbon Dioxide (Black Label): Carbon dioxide (CO2) fire extinguishers are primarily used for Class B and Class C fires. They are effective against fires involving flammable liquids and electrical equipment. CO2 extinguishers work by displacing oxygen, which helps suffocate the fire and prevent its spread. They do not leave any residue and are safe to use around sensitive electronic equipment. However, CO2 extinguishers are not suitable for Class A fires or fires involving combustible metals.