*TB 60- Methanol Vehicles Flashcards
Methanol Vehicles:
Will methanol mix with water?
Yes
Methanol Vehicles:
A mixture of methanol and water is still flammable when diluted with approximately ___ parts water to 1 part methanol.
5 parts
Methanol Vehicles:
Evaporation of methanol at ordinary room temperatures creates a potentially explosive methanol-air mixture when the methanol content reaches ___ % volume.
6%
Methanol Vehicles:
A fire hazard exists if the storage temperature of methanol in contact with air approaches the flash point of ___°F
52°F
Methanol Vehicles:
A methanol-water mixture is still a flammable liquid by OSHA definition (flash point 100°F) with as little as ___% methanol by volume
21% by volume or;
25 percent by weight
Methanol Vehicles:
Methanol burns with ____ (high/low?) flame luminosity
Low
Methanol Vehicles:
The reason methanol fires are less visible than gasoline or diesel fuel fires is that burning methanol produces no ____
Soot
This presents a distinctive safety hazard to emergency incident responders in the event of a leak or fire
Methanol vehicles:
What is the best extinguishing agent for methanol fires?
•Dry Chemical Extinguisher (ABC Rated Dry Chemical Extinguisher, Purple-K Extinguisher, Sodium Bicarbonate)
Methanol Vehicles:
For large methanol spills or fires, what extinguishing agent should be used?
“Alcohol” foam AFFF/ATC resistant form is appropriate.
S&M has a 700 gallon supply available
Methanol Vehicles:
The greatest danger from methyl alcohol is its specific toxic effect upon a person’s ____.
Eyes
Methanol Vehicles:
The Rapid Transit District (RTD) bus carries a ____ gallon tank of methanol fuel
285
Methanol Vehicles:
In order to provide the same driving range as a gasoline powered
vehicle, a methanol powered vehicle requires a fuel tank approximately ____ times the size of those found in a gasoline vehicle.
Two
Methanol Vehicles:
The engine fuel filler is located behind a small access door on the ____ hand side of the Rapid Transit District (RTD) buses.
Right
Rapid Transit District (RTD) Methanol Buses; On-board Extinguishing System:
The components of the system include three dual-spectrum infrared sensors mounted in the engine compartment, two directed discharge nozzles positioned at the top and bottom of the engine compartment, and two ____ pound Halon 1301 cylinders
20 pound
Rapid Transit District (RTD) Methanol Buses; On-board Extinguishing System:
Where are the two 20 pound Halon 1301 cylinders stored on the new buses?
left side near the fuel tank
Rapid Transit District (RTD) Methanol Buses; On-board Extinguishing System:
Where are the two 20 pound Halon 1301 cylinders stored on the diesel to methanol converted buses?
Rear right side upper quarter panel
Rapid Transit District (RTD) Methanol Buses; On-board Extinguishing System:
The infrared fire sensors are programmed to recognize the light wave lengths emitted by methanol flames and trigger the release of the first cylinder of Halon into the engine compartment. After a ___ second time delay, the second Halon cylinder will discharge.
15 second
Additionally, when the system goes into the alarm mode, a fuel shut down is activated deenergizing the fuel pump
Methanol Vehicles:
The density of methanol is ___ times the density of air. Therefore, methanol vapors will tend to do what?
- 1.1 times
* Settle in low spots
