Chapter 12 - Fire Attack Flashcards
What is often the only tool that will work on standpipe brass caps?
A big pipe wrench.
Given the static pressure of the standpipe firefighters will know the flow pressure will be roughly what
10 to 40% less.
What are two devices to tell firefighters what the static pressure of the outlet is?
Cap gauge.
Gated wye
If the static pressure is very low firefighters need what type of nozzle?
Straight stream.
If the static pressure is very high firefighters need what type of nozzle
Fog.
Never attack the fire from a stairwell that
May have people in it.
Never block stairwell doors open unless what?
A hose line is going through it.
Hose line should not be connected to a standpipe outlet in what area of the fire floor?
The tenant area.
If there are no outlets in the stairwells the hose line should be connected where?
In the tenant area of the floor below the fire
How many RIT teams should be in position
At least one, preferably two.
What must sometimes happen before the fire can be extinguished when there is a terrific fuel load?
The fuel sometimes has to burn down.
What is sometimes an obstacle to putting the fire out with regard to company integrity.
Fixation on company unity 227
What are the two decisions to make when moving in on the fire?
Do you want to charge the line before moving onto the floor
Are you confident you can handle the fire with one hose line.
Who is the only person that can answer if you want to charge the hose line before moving on to the floor?
Fire officers in that stairwell.
What is most likely to happen when the fire is raging within an enclosed area and you can’t get enough water into the area to put it out?
A stalemate.
Unless you are certain the PRVS have enough pressure to supply them when thinking of stretching backup lines for rit teams you should never be tempted to what
Use smaller diameter hose lines off of PRV stand pipe outlets.
In buildings without smoke removal systems firefighters look to what as a channel for smoke removal?
Stairwells.
When is the best time to use stairwells for ventilation
When there’s a strong upward stack effect and the stairwell opens directly to the outside at the roof.
Horizontal ventilation usually involves taking out Windows on what side to create a cross ventilation effect
Away from the fire
Firefighters should never remove windows without the consent of the IC unless what
Their life is in danger and they cannot contact the IC.
Some buildings have windows designed to be broken that are marked how
Orange circular stickers.
What is the perfect tool for window removal?
The Pike Pole
What is preferable to trying to coax smoke out of the building through stairwells
Built-in smoke removal systems.
What is the best way to prepare for smoke removal systems
Visit buildings
Discuss the systems with the engineers
Study the ventilation panels when the buildings aren’t an emergency status
What are the two downsides of automatic smoke removal systems?
- Extremely difficult for small people to open the door to the exit stairwell
- The system can pull fire through the ceiling to the smoke exhaust shaft.
If the static pressure is very high firefighters need a fog nozzle to do what
Absorb the pressure
Where should backup crews be when the attack begins
At the fire area
If smoke has reached a plateau and has stopped rising what will move the smoke to the top of a building If the temperature outside the building is hot?
Only fans and it is often a struggle
More often than not how are windows at serious high rise fires taken out
Naturally
What are two broad groups of smoke removal systems
Automatic and manual
What’s smoke removal system seals off the fire floor by automatically closing dampers to prevent any air movement
Manual
What smoke removal system automatically pressurizes the floors adjoining the fire floor while pulling smoke off the fire floor
Automatic
