Explain the fire triangle, its components, and methods to control fire, including a specific example with a candle in a jar and advice for a fish frying business.

Here are the solutions to the questions:

60. The components that might have caused the fire are: i) Fuel ii) Oxygen iii) Heat

61. The fire triangle is a simple model that illustrates the three elements required for a fire to ignite and continue: heat, fuel, and an oxidizing agent (usually oxygen). Removing any one of these elements will extinguish the fire.

62. Three methods to withdraw the components of the fire triangle to control fire are:

    • Removing fuel (starvation): This involves removing any combustible materials from the vicinity of the fire.
    • Removing oxygen (smothering): This involves covering the fire to cut off its oxygen supply, for example, using a fire blanket or carbon dioxide extinguisher.
    • Removing heat (cooling): This involves reducing the temperature of the burning material below its ignition point, typically by spraying water.

63. When a glass jar is inverted over a lit candle, the candle will burn for a short period and then extinguish. This happens because the burning candle consumes the oxygen inside the jar. Once the oxygen is depleted, the fire cannot be sustained, and the candle goes out.

64. For a business selling deep-fried fish, a crucial fire control measure to advise Jane is to have a fire extinguisher specifically designed for oil fires (e.g., a wet chemical extinguisher or Class F/K extinguisher) or a fire blanket readily available.

65. a) The meaning of the symbol is flammable or highly flammable. It indicates that the chemical substance can easily catch fire and burn.