Fire Safety Fire Prevention and Hazard Identification 1 — Questions and Answers
Question 1: What is the most common cause of residential house fires in the United States?
- Electrical malfunctions
- Cooking (Correct answer)
- Candles
- Heating equipment
Correct answer: Cooking
Cooking is the leading cause of home fires in the US, accounting for nearly half of all residential fires according to the NFPA.
Question 2: What is a 'fire triangle' and why is it important to fire prevention?
- A triangular evacuation route plan
- The three elements — heat, fuel, and oxygen — needed for fire to exist (Correct answer)
- A geometric symbol on fire extinguishers
- A three-step inspection checklist
Correct answer: The three elements — heat, fuel, and oxygen — needed for fire to exist
The fire triangle represents heat, fuel, and oxygen — removing any one element extinguishes or prevents fire.
Question 3: Which of the following is a common electrical fire hazard in the workplace?
- Using LED light bulbs
- Overloading electrical outlets with multiple devices (Correct answer)
- Unplugging equipment when not in use
- Using grounded three-prong plugs
Correct answer: Overloading electrical outlets with multiple devices
Overloaded outlets and power strips draw more current than the wiring can safely handle, generating heat that can ignite surrounding materials.
Question 4: What is 'flash point' as it relates to flammable liquids?
- The temperature at which a liquid boils
- The lowest temperature at which a liquid produces enough vapor to ignite (Correct answer)
- The point at which water flash-evaporates
- The temperature of an open flame
Correct answer: The lowest temperature at which a liquid produces enough vapor to ignite
Flash point is the minimum temperature at which a flammable liquid's vapors will ignite when exposed to an ignition source.
Question 5: What is the purpose of a hot work permit system in industrial settings?
- To track employee overtime during high-temperature operations
- To control and document fire risks associated with welding, cutting, and grinding (Correct answer)
- To certify equipment for high-temperature use
- To log all fire incidents and near-misses
Correct answer: To control and document fire risks associated with welding, cutting, and grinding
Hot work permits require pre-job hazard assessments, fire watches, and documented controls before any spark-producing work begins.
Question 6: How far should combustible materials be stored from a portable space heater?
- At least 1 foot
- At least 3 feet (Correct answer)
- At least 6 feet
- At least 10 feet
Correct answer: At least 3 feet
A minimum 3-foot clearance around space heaters prevents nearby combustible materials from igniting from radiated heat.
Fire Safety Fire Prevention and Hazard Identification 1
What is the most common cause of residential house fires in the United States?