3.4 Portable Fire Extinguishers Flashcards
What are the 5 classes of fire?
A - fires involving solid materials like wood, paper, or textiles
B - fires involving flammable liquids such as petrol, diesel, or oils
C - fires involving electrical apparatus
D - fires involving metals
K - fires involving kitchens and cooking oils
What kind of fire involves solids such as wood, textiles or trash?
Class A
What is involved in Class B fires?
Flammable liquids such as gas, diesel or oil
What class is a cooking oil fire?
Class K
What is involves in a Class D fire?
Metals
What class of fire involves electrical components or energized equipment?
Class C
What classes of fire can be extinguished with dry chem?
A,B, and C
What class of fires can be extinguished with a Carbon Dioxide fire extinguisher?
Class B & C.
Carbon dioxide takes away the oxygen element of the fire triangle and the heat with a very cold discharge
What is the most widely used, multipurpose fire extinguisher?
Multipurpose Dry chem. It interrupts the chemical reaction of the fire triangle and is effective on Class A, B, and C.
What kind of extinguisher is used on Class K fires?
Wet chemical, it removes the heat of the fire triangle and prevents re-ignition by creating a barrier between the oxygen and fuel elements.
What is used to extinguish Class D fires?
Dry powder, for combustible metal fires only. They are ineffective on all other classes of fire.
When do we use water cans?
Class A fires only. Not B or C. The discharge stream could spread the flammable liquid in a class B fire or create a shock hazard on a Class C fire.
What are cartridge operated dry chemical fire extinguishers good for?
Class A B or C.
Ordinary dry chem is only good for B and C.
What does PATSS stand for?
Pull Aim Test Squeeze Sweep
Name the extinguishers carried on the engine company and locations
CO, dry chem, water chem
