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Fire Extinguishers Questions and
Answers 100% Pass
List the 5 classifications of fire ✔✔A- ordinary combustibles; B- flammable liquids C- energized electrical; D- flammable metals; K- Animal & vegetable oils
Fire Extinguisher ✔✔A a manually operated device for extinguishing small fires
What are Fire Extinguishers used as? ✔✔First line of defence against fires of limited size.
What are the 4 ways in which a fire can be extinguished? ✔✔removing access to oxygen, removing fuel, inhibiting the chemical chain reaction and removing heat.
Describe class A fire extinguishers and it's symbol ✔✔Class A fires have a fuel source consisting of common materials like paper, cardboard, lumber and plastics. Green Triangle
Describe Class B fire extinguishers and it's symbol ✔✔Class B fires are flammable or combustible liquids such as gasoline, kerosene or common organic solvents. Red Square
Describe Class C Fire extinguishers and it symbol ✔✔Class C fires have common fuel sources but are ignited by electrical equipment such as appliances, switches, panel boxes power tools, or hot plates. Blue Circle
Describe Class D Fire extinguishers and it's symbol ✔✔Class D fires involve combustible metals such as magnesium, titanium, potassium, sodium and pyrophoric organometallic reagents. Yellow Star
Describe Class K Fire extinguishers ✔✔Class K fires are kitchen fires and have fuels similar to those in class B (vegetable oil and animal oils).
CO2 extinguishers are effective on which classes of fires? ✔✔Class B and C. The Carbon Dioxide effectively suffocates the fire and leaves no residue
What is the range of class A ratings? ✔✔1-A throught 40-A
________,________, and _________ fires must be extinguished for an extinguisher to receive a ___A through a __A rating ✔✔Wood panel fire, excelsior fire and wood crib fire, 1 6
What kind of systems can class K extinguishers be found in? ✔✔portable, fixed systems or both
Class K extinguishers may be of the ________ or ________ type ✔✔dry, wet
Dry chem class K extinguishers are of the ____ ____ or _____ ____ type ✔✔sodium bicarbonate potassium bicarbonate
Wet chem class K extinguishers are of the ______ ______, _____ ______ or _____ _____ type ✔✔potassium acetate, potassium carbonate, potassium citrate
Which extinguishing agent absorbs more heat per volume than any other known extinguishing agent? ✔✔water
What are the 4 basic dry chem powders and what do they consist of? ✔✔Regular dry Chemical Powder (sodium bicarbonate), Multi-pupose dry chemical powder (ammonium phosphate), Purple K (potassium bicarbonate) and Monnex (potassium carbonate)
What are the 3 elements commonly found in halogen based extinguishing agents? ✔✔Fluorine, Chlorine and Bromine
Define PASS ✔✔Pull Aim Squeeze and Sweep
What 5 conditions must be met in order to use an extinguisher? ✔✔The building has been or is in the process of being evacuated, 9-1-1 has been called,, the fire is small (incipient stage) and is not spreading beyond initial area, exit is clear, correct extinguishr for task in on hand and there is no doubt as to the proper use and operation of extinguisher
When should extinguishers be inspected? ✔✔thoroughly inspected yearly and should be inspected by the owner monthly
Name 8 things to look for when inspecting extinguishers ✔✔accessible and properly located, exterior body for corrosion or other damage, operating instructions on name plate are leible, discharge nozzle for cracks, dirt or obstructions,ensure the lock pins and tamper seals have not been removed, full of agent by checking the pressure gauge, inspection tag or date, maintenance and date of recharge, condition of the hose.
