Podcast
Questions and Answers
Which components make up a fire tetrahedron? (Select all that apply)
Which components make up a fire tetrahedron? (Select all that apply)
- Fuel (correct)
- Heat (correct)
- Water
- Chemical Chain Reaction (correct)
- Oxygen (correct)
What classes of fires are there? (Select all that apply)
What classes of fires are there? (Select all that apply)
- Alpha (correct)
- Bravo (correct)
- Charlie (correct)
- Delta (correct)
What color smoke is produced in a class Alpha fire?
What color smoke is produced in a class Alpha fire?
White smoke
What causes a class Alpha fire?
What causes a class Alpha fire?
What agents are used to extinguish a class Alpha fire?
What agents are used to extinguish a class Alpha fire?
What color smoke is produced in a class Bravo fire?
What color smoke is produced in a class Bravo fire?
What causes a class Bravo fire?
What causes a class Bravo fire?
Examples of fuels for a class Bravo fire include which of the following? (Select all that apply)
Examples of fuels for a class Bravo fire include which of the following? (Select all that apply)
What agents are used to extinguish a class Bravo fire?
What agents are used to extinguish a class Bravo fire?
What color smoke is produced in a class Charlie fire?
What color smoke is produced in a class Charlie fire?
What causes a class Charlie fire?
What causes a class Charlie fire?
What extinguishing agents are used in a class Charlie fire?
What extinguishing agents are used in a class Charlie fire?
Why is PKP a last resort for a class Charlie fire?
Why is PKP a last resort for a class Charlie fire?
What is a class Delta fire?
What is a class Delta fire?
What metals are typically involved in a class Delta fire? (Select all that apply)
What metals are typically involved in a class Delta fire? (Select all that apply)
How many degrees does it produce heat to melt combustible metals in a class Delta fire?
How many degrees does it produce heat to melt combustible metals in a class Delta fire?
What extinguishers are used for a class Delta fire?
What extinguishers are used for a class Delta fire?
What are the four principles of investigation? (Select all that apply)
What are the four principles of investigation? (Select all that apply)
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Study Notes
Fire Tetrahedron Components
- Fire tetrahedron includes heat, fuel, oxygen, and a chemical chain reaction.
Classes of Fires
- Fires are classified into four categories: Alpha, Bravo, Charlie, and Delta.
Class Alpha Fire Characteristics
- Produces white smoke.
- Caused by household goods and materials that produce ashes.
- Extinguishing agents include Firemain and CO2.
Class Bravo Fire Characteristics
- Produces black smoke.
- Ignited by fuel liquids.
- Examples of fuels: JP5, DFM, hydraulic fluid, and lube oil.
- Extinguishing agents include AFFF, PKP, and Halon.
Class Charlie Fire Characteristics
- Produces white/blue smoke.
- Caused by electrical equipment.
- CO2 is preferred; PKP is a last resort due to its corrosive properties.
Class Delta Fire Characteristics
- Involves aircraft and burning combustible metals.
- Key metals: magnesium and titanium.
- Generates heat exceeding 1400 degrees Fahrenheit, necessary to melt combustible metals.
- Extinguishing methods include jettisoning and using AFFF for cooling.
Principles of Fire Investigation
- Conduct investigations thoroughly, cautiously, and ensure accurate reporting, then repeat to validate findings.
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