Fire Extinguisher Safety

The fire extinguisher classification and rating system is based on tests conducted by the National Fire Protection Association (NFPA).

• 
  

  True

• 
  

  False

CO2 extinguishers should never be used in a confined space unless the user is wearing proper respiratory protection, such as a supplied-air respirator (SAR) or a self-contained breathing apparatus (SCBA).

• 
  

  True

• 
  

  False

Which of the following fires can be extinguished by an extinguisher labeled 4-A 20-B:C?

• Class A fire that requires less than 5 gallons (18.9 liters) of water to extinguish

• 
  

  Class B fire that is up to 20 square feet (1.86 m^2) in size

• Class C fire involving energized electrical equipment

• All of the above

Which of the following should you do with a partially used extinguisher? (Select all that apply)

• Replace it with a new, fully charged extinguisher

• Put it back into service immediately in case there's another fire

• Have the partially used extinguisher recharged by qualified personnel

• Put it in another room at your workplace that's less likely to have a fire

Which of the following situations should you evacuate the area immediately? (Select all that apply)

• The fire could block your only exit

• The fire is spreading very quickly

• The type of the extinguisher is wrong

• It is necessary to crawl on the floor due to excessive smoke

• The fire is too large

What does the acronym PASS stand for?

• Press, Aim, Squeeze, Sweep

• Pull, Aim, Squeeze, Stop

• Pull, Aim, Squeeze, Sweep

• Press, Aim, Sweep, Stop

Which of the following are good fire extinguisher maintenance steps? (Select all that apply)

• Inspect them periodically and replace if damaged or depleted

• Name plate with operating instructions and classifications should be legible and facing outward

• Make sure each extinguisher is fully charged with the needle in the green zone

• The pin and tamper seal should be intact

A water-mist fire extinguisher that uses deionized water and sprays a fine mist is safe to use on energized electrical equipment.

• 
  

  True

• 
  

  False

Wet chemical fire extinguishers are for what class or classes of fire?

• Class A

• Class D

• Class K

• Classes A, B, and K

Which of the following describe a dry chemical fire extinguisher? (Select all that apply.)

• Only available in hand-held models

• Can be used to fight Class B and Class C fires

• Some are multi-purpose and can be used to fight Class A, Class B, and Class C fires

• Many dry chemicals used are corrosive to metals