WorksheetsBell ringer Fire Hazards
Total questions: 7
Worksheet time: 4mins
Which three elements must be present at the same time for a fire to start and continue burning (the fire triangle)?
Fuel, water, and air
Heat, fuel, and oxygen
Heat, water, and electricity
Fuel, electricity, and carbon dioxide
A Class B fire involves which type of material?
Ordinary combustibles such as wood and paper
Energized electrical equipment
Flammable liquids such as gasoline and solvents
Cooking oils and fats
Which type of fire extinguisher is commonly used on Class A, B, and C fires on construction sites?
Water (pressurized water) extinguisher
Carbon dioxide extinguisher
Dry chemical extinguisher
Class K wet chemical extinguisher
What is the first action a worker should take if a fire is discovered and it cannot be controlled quickly and safely with a portable extinguisher?
Attempt to move burning materials outside
Call for help, activate the alarm, and evacuate along the designated route
Turn off all electrical power and wait for instructions
Open windows and doors to let smoke escape
Which statement about using a portable fire extinguisher is correct?
Aim at the top of the flames to cool the smoke.
Always stand as close as possible to the fire.
Use the PASS method: Pull, Aim, Squeeze, Sweep.
Test the extinguisher by discharging it fully before approaching the fire.
On a construction site, which situation is considered a common fire hazard?
Storing full oxygen and fuel gas cylinders upright, chained, and separated
Keeping flammable liquids in approved, closed containers away from ignition sources
Allowing oily rags and trash to accumulate near hot work areas
Maintaining clear access to fire extinguishers and exits
When performing hot work such as welding or cutting, why is a fire watch sometimes required?
To assist the welder in setting up equipment
To operate heavy equipment near the work area
To watch for and extinguish sparks or fires during and after hot work
To check workers in and out of the work site
