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Questions and Answers
Define 'Flammable Range.'
Define 'Flammable Range.'
The range of a concentration of a gas or vapor that will burn (or explode) if an ignition source is introduced.
Once the three basic elements of fire are present, what must occur to ignite a fire?
Once the three basic elements of fire are present, what must occur to ignite a fire?
- The elements must be mixed equally
- A flame or spark must be present
- The elements must be contained
- A chemical reaction must take place (correct)
Protecting sources of electrical energy is what type of fire prevention method?
Protecting sources of electrical energy is what type of fire prevention method?
- It is a method of controlling sources of fuel
- It is a method of controlling direct heat sources
- It is a method of controlling sources of heat (correct)
- It is a method of controlling sources of energy
What type of heat source is a gas welder?
What type of heat source is a gas welder?
Controlling sources of heat and sources of fuel are two general categories of what?
Controlling sources of heat and sources of fuel are two general categories of what?
What do piles of paper trash in a storage area, an oil spill, and a pile of rags soaked with flammable solvent have in common?
What do piles of paper trash in a storage area, an oil spill, and a pile of rags soaked with flammable solvent have in common?
What is/are requirement(s) for fire exits?
What is/are requirement(s) for fire exits?
What is a good way to prepare yourself for a fire situation?
What is a good way to prepare yourself for a fire situation?
Burning scrap wood is considered what class of fire?
Burning scrap wood is considered what class of fire?
Where are the ratings for fire extinguishers found?
Where are the ratings for fire extinguishers found?
Preventing excessive mechanical friction is what type of fire prevention method?
Preventing excessive mechanical friction is what type of fire prevention method?
Why should flammable liquids be kept in grounded drums?
Why should flammable liquids be kept in grounded drums?
What is the best way to alert others and report a fire at the same time?
What is the best way to alert others and report a fire at the same time?
What is one of the most important purposes of an emergency plan?
What is one of the most important purposes of an emergency plan?
A fire fueled by burning propane gas is considered what class of fire?
A fire fueled by burning propane gas is considered what class of fire?
When using a standpipe/hose system to extinguish a fire, where should you aim the nozzle?
When using a standpipe/hose system to extinguish a fire, where should you aim the nozzle?
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Study Notes
Fire Classes and Definitions
- Flammable Range: The concentration of a gas or vapor that can burn or explode if ignited.
- Class A Fire: Involves ordinary combustibles like wood, paper, and trash.
- Class B Fire: Involves flammable liquids like propane and oil.
- Class C Fire: Involves electrically energized equipment.
- Class D Fire: Involves combustible metals.
Fire Prevention Methods
- Fire prevention includes controlling sources of heat and fuel to prevent ignition.
- Prevention strategies may involve reducing mechanical friction and grounding flammable liquid containers.
- Sources of heat control is vital in maintaining a safe environment.
Fire Safety Measures
- Fire exits must be clearly marked and always accessible for quick evacuation.
- Familiarizing oneself with an employer’s emergency and fire prevention plans enhances preparedness.
Fire Equipment and Response
- Fire extinguisher ratings are located on the extinguisher's label, providing essential usage information.
- Appropriate response during a fire includes activating the fire alarm system to alert others.
Common Fire Hazards
- Piles of paper, oil spills, and rags soaked in flammable solvents are fuel source fire hazards that can escalate fire risks.
- Keeping flammable liquids in grounded drums prevents static electricity sparks from igniting contents.
Emergency Plan Importance
- Emergency plans should designate employees with special duties during an emergency.
- Clear and actionable procedures contribute to effective response and safety during fires.
Fire Extinguishing Techniques
- Aim the nozzle at the base of the fire while using a standpipe or hose system for maximum effectiveness.
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