Fire Spread & Prevention
What three elements make up the Fire Triangle?
Heat, fuel, oxygen
What should businesses provide based on their fire risks?
Appropriate fire extinguishers/safety precautions
Which extinguisher should you use for a Class A fire?
Water extinguisher
What type of fire is most common in offices and schools?
Class A—solid combustibles
What type of fire is caused by burning wood, paper, or fabric?
Class A
What is the fourth element added in the Fire Tetrahedron?
Chemical chain reaction
What safety device detects smoke and warns occupants of a fire?
Smoke alarm
What type of extinguisher is best for electrical fires?
CO2 extinguisher
What type of business should have extinguishers for Class B fires?
Gas stations, bars, restaurants
Which fire class involves flammable liquids like gasoline and alcohol?
Class B
Name one way fires spread (chemical terminology).
Convection, conduction, radiation, or direct burning
What is one reason why training employees in fire safety is important?
Reduces risks and improves emergency response
Why should you never use a water extinguisher on a grease fire?
Water can cause the fire to spread violently
Why do commercial kitchens require special extinguishers?
Cooking oil fires need wet chemical extinguishers to prevent re-ignition
Fires involving cooking oils and fats belong to which fire class?
Class F or K
How does a CO2 extinguisher put out a fire?
It displaces oxygen, suffocating the fire
What should be regularly maintained to ensure it functions properly in case of a fire?
Fire extinguishers
What is the primary advantage of a powder extinguisher?
(It can be used on Class A, B, C, and some electrical fires
Name one setting where Class D fires are a major risk.
Industrial plants or laboratories
What type of fire is caused by combustible metals such as magnesium and lithium?
Class D
What is the purpose of a fire risk assessment?
To identify hazards and implement safety measures
What happens if you use the wrong extinguisher for a fire?
It can worsen the fire and increase danger
Name two extinguisher types that are suitable for Class F (K) fires.
Wet chemical and MultiCHEM extinguishers
What type of fire hazard is present in every setting with appliances, tools, or wiring?
Electrical fires
True or False: Electrical fires have their own class in every fire classification system.
False—some systems classify them under Class E, while others categorize them within Class C