15.9 Flashcards
What’s a category1 door
Category 2
Category 3
Category 4
Direct access door and can only fit head and shoulder in
Direct access door that can fit whole body
No direct access door as it’s a internal opening and wide enough for rescue
Internal opening and not wide enough for rescue
What should be worn as clothing protection when entering a fuel tank
Cotton tank access clothing
What should be prevented from happening to ac while refuelling and why
Moving as it will damage the ac
Where does refuelling leaks usually occur
At vent tank openings
What should be done after ingestion of fuels or oils
Do not vomit drink a 250ml of water (1/2 pint)
What does jet fuel do to asphalt
Softens
Why should partial stock of synthetic oil not be used
it’s very hygroscopic so water from the atmosphere would habpve been absorbed
What are the main requirements of fuel
Low freezing point
Low tendency to carry water
Flash point low enough for ignition
Low tendency to vaporise
Lubrication
What’s the flash point and freezing point of JP5
Flash = 65
Freeze= -48
What’s the flash point and freeze point of jet b
Flash = 20
Freeze -58
What’s the flash point of jet a fuel and freeze point, where’s it commonly used
Flash= 38
Freeze=-40
Used= America
Flash and freeze point of jet a1?
Where’s it used
Flash 38
Freeze -47
Used europe
What percentage of fuel is made up by hydrogen and carbon
16% hydrogen
84% carbon
What’s coking
Amount of carbon residue left in oil after being subjected to extreme heating
What’s oxidation
The ability of the oil to resist the formation of hard carbon and sludge at high temps
