Questions with A+ Graded Answers
What is the most reliable method for determining whether there is hidden fire?
Thermal imaging
Direct inspection
Atmospheric monitoring
Odor/sight of smoke
In most cases, what is the best way to quickly stop the flow from a single sprinkler head?
Insert a sprinkler wedge
Replace the bulb or link
Install a replacement head
Close the branch line valve
A fire cannot be considered fully extinguished until _______ is complete.
secondary search
overhaul
Correct answer
loss control
the suppression operation
What is a common location for a sprinkler system OS&Y valve?
On the service side of the water meter
Outside next to the post indicator valve
In an underground service box
In a mechanical room
Which of the following methods offers a firefighter the safest way to reduce the possibility of
inhalation exposures?
Don't remove SCBA at all.
Don't remove SCBA until 'all clear' is given.
Test the atmosphere and determine if the it is safe to remove SCBA.
Use a multi-gas meter to determine if SCBA can be removed.
Which is a common use of a crowbar in overhaul operations?
,Separation of debris
Removal of roofing material
Removal of window and door casings
Opening walls and ceilings
Which hazard is of particular concern with the use of gasoline-powered portable pumps?
Heat buildup
Noise
Electrical shock
Carbon monoxide
What is the term for operations undertaken to find and extinguish any remaining pockets of
fire?
Cold-trailing
Secondary search
Breaching
Overhaul
Which statement about the use of a thermal imager during overhaul operations is correct?
A thermal imager is particularly useful for scanning through heavy insulating materials.
Some ambient light is required for the unit to produce a useful image.
The imager depicts the temperature differential between an object and its surroundings.
Imagers used for search and rescue should not be used for overhaul.
Which is the primary consideration while conducting salvage and overhaul?
Thoroughly clearing the structure of debris
Careful use of water
Leaving the structure in the best condition possible
Preserving evidence of fire cause
Which items are best overhauled outside the structure?
Books/documents
Appliances
Furniture
Clothing/wardrobe
Which type of sprinkler head is particularly difficult to shut off?
,Pre-action
Recessed
Deluge
Sidewall
How is a sprinkler wedge used to stop flow from an activated sprinkler?
Tap a wedge into place between the orifice and the deflector
Push two wedges together from opposite sides between the orifice and the deflector
Tap two wedges into place above and below the deflector
Insert the wedge into the orifice and drive it into place with a striking tool
The lighting and power equipment used at an emergency scene generally operates at:
220-volt DC.
110-volt AC.
110-volt DC.
220-volt AC.
What is a limitation of backpack water vacuums?
They cannot be worn with SCBA
Lift is limited to approximately 3 ft
They must be used in a well-ventilated area
They cannot be used with dirty water
A threaded stem indicates the valve position on which sprinkler control valve?
Butterfly
Post indicator
Gate
Outside stem and yoke
What does an electrochemical sensor use to detect a substance?
Reagent
Catalyst
Enzyme
Accelerator
What is a common salvage operation?
Covering ventilation openings
Determining the cause and origin of the fire
, Pulling ceilings
Utility control
During salvage, what should be done with any pictures on the walls?
They should be removed and placed with the furniture
They should be left in place and covered with plastic sheeting
They should be left in place and turned toward the wall
They should be placed face-down under a bed
What is the best way to extinguish a smoldering mattress?
Take it outside and soak it
Apply Class A foam to the smoldering area
Open the mattress and thoroughly wet the smoldering area
Place it flat on the floor and soak it
Ideally, when should salvage operations begin?
After the fire is declared under control
After the safety officer has tested the atmosphere
Concurrently with fire attack
After the completion of the cause/origin investigation
If individual sprinkler heads cannot be shut off, what should be done to stop the flow of water?
Close the water service valve at the water meter
Open the fire department connection outside
Open the system drain valve
Close the main sprinkler control valve
The risk of rekindle exists even if as little as _____ of the original fire is left smoldering.
5 percent
10 percent
15 percent
1 percent
Where do salvage operations usually begin?
In the least damaged area
In high-value areas
On the floor below the fire floor
As close to the seat of the fire as possible