20 Questions
What is the most effective method of increasing heat release rate in a fuel-limited fire?
Providing more fuel
In a fuel-limited, fully developed fire, what happens when all the fuel becomes involved?
Fire reaches its peak
What action would add oxygen to a ventilation-limited compartment fire and allow it to grow?
Allowing additional air into the compartment
How does a ventilation-limited fire reach its peak?
By consuming all available fuel
What does the text warn about regarding transitioning a ventilation-limited fire to a fuel-limited fire?
"Only mechanism is to extinguish burning fuel"
During the decay stage, what leads to a fire's self-extinguishment in fuel-limited fires?
Consuming all available fuel
'Decay stage' in a fuel-limited fire usually indicates what?
"Final stage before self-extinguishment"
'Ventilation-limited decay' is not necessarily the final stage of a fire because it awaits what?
"New supply of oxygen"
What situation occurs when a fire runs out of available fuel or oxygen?
Decay stage
How can firefighters reduce the risk of unpredictable window failure in a ventilation-limited fire?
Transition the fire to a fuel-limited condition
What occurs during the ventilation-limited decay stage of a fire?
Fire awaits a new supply of oxygen
In a fully developed, ventilation-limited fire, why does the fire lack oxygen available to grow?
The number and size of openings in the compartment limit air entrainment
What leads to a fire's self-extinguishment when it runs out of fuel?
A decay in the heat release rate
Why is it challenging for compartment fires to enter a state of fuel-limited decay?
Compartment fires are usually ventilation-limited fires
What is a key difference between fuel-limited fires and ventilation-limited fires reaching their peak?
'Fuel-limited fires consume all the available oxygen from air intake, while ventilation-limited fires have additional fuel available.'
'Adding additional air into a compartment via an opening will result in what during a ventilation-limited fire?'
'Higher peak release rate'
'What is required for firefighters to ensure that the decay stage of a ventilation-limited fire is the final stage?'
'Cooling hot fire gases before ventilation'
'Why must firefighters transition a ventilation-limited fire from growth stage to decay stage?'
'To lessen the likelihood of gases igniting with fresh oxygen supply'
In a fully developed, ventilation-limited fire, why does the fire lack oxygen available to grow?
Insufficient air intakes in the compartment restrict air entrainment
What leads to a fire's self-extinguishment when it runs out of fuel?
Absence of available fuel
Explore the concept of limited air supply in compartment fires, where fire can only react with the oxygen available within the compartment and through openings. Understand how the energy released in most compartment fires is proportional to the limited oxygen available, rather than the amount of fuel present.
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