Firefighting Ops Flashcards
Normal internal temps of Catalytic Converter _______. Normal outside surface temp _______. FFOps 1
1300-1600, 1000 degrees
Fuel Evaporation Control System vacuum relief set to operate at ____ and a pressure relief valve set to open at _____. FFOps 1
3/8 psi, 1 psi
The act of cooling the fuel tank on auto fires with a second hose should be considered appropriate from both a tactical and safety standpoint. FFOps 1
TRUE
Veh Fire apparatus positioned at least ____ in front of veh and at least ____ to rear of veh. FFOps 1
50 feet; 100 ft
1st handline goes to the ___________ with 2nd handline going to the __________ using a _________ pattern. FFOps 1
passenger comp, fuel tank, wider fog
You should not remove the fuel cap ofvehicles on firefor the purpose of relieving excess pressure. FFOps 1
TRUE
If the temp produced by the veh fire reaches in excess of ____ degrees, auto ignition make occur rupturing a protective disk and venting argon. FFOps 1
480
At ____ degrees the initiator component of undeployed airbags will auto ignite. FFOps 1
750
Some airbags are designed to auto inflate at repeated and prolonged temps above _______ degrees. FFOps 1
250
Tell tale sign of an Electric Vehicle (EV or Hybrid Electric Vehicle BEV) is the international _______ color associated w/the wiring system. FFOps 1
Orange
In EV cars there is a delay of _____ mins b/t the time the power is cut and the system is de-energized of all of it’s stored energy. FFOps 1
5 to 10
Large EV fires can be safely controlled w/water; if the fire involves the batteries & is minor in nature consider utilizing a “type” D dry chem extinguisher. FFOps 1
TRUE
Use a ________ to dilute toxic smoke from a burning sodium and sulfur battery. FFOps 1
Water fog
With more plastics in today’s vehicles currently there is over_____ lbs of combustible material in vehicles. FFOps 1
900
Isolate E85 spill for at least_____ ftin all directions. FFOps 2
150ft or 50 meters
Be cautioned that E85 has a very___ flash point; use of water spray when fighting fire may be inefficient. FFOps 2
low
To extinguish large fires involving E85 fuel you should use straight streams. FFOps 2
FALSE
For large spills of E85, consider downwind evac for at least __________. FFOps 2
1000ft or 300 meters
If a tank, rail car or tank truck is involved in an E85 fire, isolate for ___________ and consider evacuation for ___________ in all directions. FFOps 2
1/2 mile or 800 meters, 1/2 mile or 800 m
Metro fleet buses contain___ CNG tanks that operate at_____ psi. Each tank has an independent shut-off located at the end of each tank. FFOps 3
7, 3600
There are ___ PRDs (pressure relief devices) located in the roof area which will activate @ ___ psi or when the tank is heated to ____ degrees. FFOps 3
8, 5400, 220
There are___ methane sensors located on the bus w/2 in the tank compartment & 2 in the engine compartment. Sensors alert the driver to leaks in 2 modes: “trace” and “significant”. If a______ alert is activated the engine will shut down. FFOps 3
4, significant
CNG burns w/ an _______ flame and has a flashpoint of _____ degreesFFOps 3
orange, 560
On Metro CNG buses temperature sensors release an extinguishing agent when reaching a temp of ______which can also be manually activated by the driver near his driving position. FFOps 3
280
The 7 tanks are filled w/a CNG that is mostly made up of __________. FFOps 3
Methane
The fueling compartment door is located_______ and contains a fuel shut off located inside the door. To shutdown the system turn the lever____ degreesor ____ to the piping. FFOps 3
in the right rear of the bus, 90, perpendicular
For CNG minor leaks remove ignition sources ____ ft and ____ ft for major leaks. FFOps 3
100, 300
Although some vehicles running Propane are marked, there are no federal or city regulations that require the labeling or placarding of such vehicles. FFOps 4
TRUE
Propane gas is _____ than air, has a vapor density of ____, and an expansion ratio of ___________. FFOps 4
heavier, 1.6, and 270 to 1
Propane gas fueled vehicles have fuel cylinders that hold approx ___ gal located in the ____ of the vehicle. FFOps 4
25, trunk
The greatest danger after a helicopter crash is ________. FFOps 5
fire
All onlookers should be kept a minimum of_____ft from the helicoptercrash scene. FFOps 5
1500
Members should expect a potential____ gal of fuel on board the aircraft at any crash scene. FFOps 5
100
The safest area of a helicopter crash is __________. FFOps 5
inside the helicopter
Helicopter landing zoneson streets and thoroughfares stop traffic ____ ft in all directions w/lead vehicles lights turned off. FFOps 5
150