Fire Fighting Ops Bulletins Flashcards
What is the internationally recognized color of the main power wiring of an electric vehicle?
Orange
After the energy is “dumped” from the system of an electric vehicle how long can you expect the capacitors to store energy for?
5 and 10 minutes
How many Compressed Natural Gas(CNG) cylinders are utilized on a CNG metro bus?
7
What are the Compressed Natural Gas (CNG) cylinders on a CNG metro bus constructed of?
Lightweight plastic wrapped in carbon glass fiber
Where are the Compressed Natural Gas(CNG) tanks located on a CNG metro bus?
On the roof
What is the expansion rate of propane gas?
270:1
What is the vapor density of propane gas?
Heavier than air @1.6
What flammable metal commonly used in the construction of helicopters ignites at 1,200 degrees
Magnesium
What is the optimal hose stream pattern to produce a favorable combination of fog and reach?
30 degree fog
At what temperature (degrees Fahrenheit) does the thermal imaging camera switch from High Sensitivity mode to Low Sensitivity mode?
300
What is the greatest danger after a helicopter crash?
Fire
When dealing with a Hybrid Vehicle that is involved in an emergency, after responders turn off the ignition and remove the key from the area what action should be taken to warn responders that the vehicle is still energized?
Turn on the emergency flashers
Who shall the Fire Marshal’s representative notify when a fire watch has been discontinued?
Deputy Fire Chief of Operations
An electrical emergency that prohibits resolution and can escalate if not controlled is considered to be what priority level?
Priority 2
What does a water supply task force consist of?
3 Water Supply Engines and a Battalion Fire Chief
What is defined as a short term, emergency measure to provide an acceptable level of life safety in an unsafe or hazardous condition existing in a building or structure?
Fire Watch
The normal internal temperatures of a catalytic converter are typically between what temperatures?
1300 and 1600 degrees
E-85 fuel is composed of what?
85% Ethanol and 15% Gasoline
When given info to Pepco on the pole there is a number how numbers are there
10
Plastics burn up to how many times the BTU output of ordinary combustibles?
3
The outer surface of a catalytic converter generally reaches what temperature.
1000 degrees
How many feet should you remove ignition sources involving a minor Compressed Natural Gas leak?
A. 100 feet
100’
What is the ignition temperature for Jet a Fuel?
410 degrees F
Vehicle fires can be accidental or incendiary in nature, most accidental vehicle fires are caused by:
Electrical or fuel system malfunction
Compressed gas inflators for air bag systems can be found in what locations of vehicles?
In the firewall
B and C posts
Compressed Natural Gas (CNG) burns with what color flame?
Orange
Propane gas spills and leaks produce large vapor clouds that should be contained quickly, this is accomplished with the use of:
A fog stream directed over the cloud
When applying fog streams the stream should be “worked” to cover the greatest possible area. Tests have shown that a __________ motion is usually more satisfactory.
Circular Motion
Who has the responsibility to request the “fire watch” be discontinued once the fire protection system has been fully restored or the hazardous situation has been abated?
The Building owner
According to Firefighting Operations Bulletin No. 11, by utilizing the right side steamer intake with LDH connected to the steamer connection on the hydrant, and the front and rear intakes of the apparatus connected to the 2-1/2” hydrant connections utilizing in-line gate valves and LDH is known as:
A Heavy Hookup
On vehicle fires, apparatus should be positioned at least how many feet in front of the involved vehicle?
50
Aluminum loses structural support and has a melting point between what degrees Fahrenheit?
700 to 800 Degrees F
