Fire Safety and Utility Controls Flashcards
What is CERT’s number 1 priority? How do you achieve it?
RESCUER SAFETY
- work with a buddy
- wear safety equipment
FIRE CHEMISTRY: What are the 3 elements of a fire?
- heat (required to bring material to ignition point)
- fuel
- oxygen (need at least 20% oxygen to burn)
create a chemical exothermic reaction - FIRE TRIANGLE
What are the classes of fires? (based on the type of fuel)
* necessary for knowing how to extinguish them
Class A - ordinary combustibles (ex paper, cloth, wood, rubber, plastics)
Class B - flammable and combustible liquids
Class C - energized electrical equipment
Class D - combustible metals (aluminum, magnesium, titanium)
Class K - cooking oils
What are the 3 categories of utility hazards in the home and workplace?
Electrical, Natural Gas, Flammable/Combustible liquids
What are 2 simple measures to prevent fires?
- locate potential hazards
- eliminate/reduce hazards
How can you reduce or eliminate electrical hazard fires?
- avoid “electrical octopus” (tangled chords)
- don’t run chords under carpet
- check for/replace broken/frayed chords
- maintain electrical appliances
What are the characteristics of water extinguishers?
- Capacity: 2.5 gallons (standard)
- Range: 30-40 feet (standard)
- Pressure: 110 psi (standard)
When can dry chemical extinguishers (sodium bicarbonate base) be used?
Class B and C fires
When can multipurpose dry chemical extinguishers be used?
Class A,B and C fires
What are the characteristics of dry chemical extinguishers?
- Capacity: 10-20 secs. discharge time)
- Range: 8-12 feet (standard)
- Pressure: 175-250 psi (standard)
What is the 5-second rule?
If the fire cannot be put out in five seconds then leave immediately.
What is ‘overhauling’?
The process of searching a fire scene for hidden fire or sparks to prevent rekindling
What is the first question to ask yourself before attempting to extinguish a fire?
Can I escape quickly and safely from the area if things go wrong?
What are the components of a portable fire extinguisher?
- Hose
- Pressure Gauge
- Carrying handle and trigger
- Cylinder
How do you operate a fire extinguisher?
P.A.S.S.
- Pull
- Aim
- Squeeze
- Sweep