PG-85-00-170 AVIATION FUEL Flashcards
what interval SHALL the CO of an air station review all refueling plans?
annually
Hot refueling operations
- only conducted to meet urgent operational mission requirements.
- notify local fire dept. AT LEAST 15 minutes prior
during hot refueling, A/C’s may not be taxied or positioned when:
- 200 ft. of an inhibited or uninhibited building.
- 100 ft. from parked A/C.
- 50 ft. from a taxied A/C.
Fuel Spill Dimensions
Small: covering any area up to 18in. in any dimension.
Medium: cover up to 10ft. any dimension, but not over 50ft.(fire guard must be posted upwind)
Large: Spills over 50 sq. ft. (spill response team)
Weather requirements when fueling
- prohibited within 5 nautical miles of lightning storms.
2. Should not be conducted in sustained winds of over 50 knots(only accomplished when operational necessity dictates)
JP-4 Fuel (NATO F-40)
- used ONLY at shore units
- Flash pt. = 0 F
- Freeze pt. = -72 F
- Jet B can be used as a replacement
Fire spread rapidly and more difficult to extinguish than JP-5
JP-5 Fuel (NATO F-44)
- ONLY authorized aboard cutters
- Flash pt. = 140 F
- Freeze pt. = -51 F
- Jet A can be used as a replacement
introduction of FSII will lower flash point of JP-5 by 4-degrees
JP-8 (NATO F-34)
- Contains FSII as well as other fuel additives
- Flash pt. = 100 F
- Freeze pt. = ?
- Jet A1 can be used a replacement
Particulates(fuel contaminates)
maximum acceptable level: 2 mg/L
- removing particulates is to provide a minimum of 2 hours for solids to settle before the fuel is withdrawn.
water(fuel contaminates)
maximum acceptable level: 10 ppm
1. dissolved(humidity)
2. entrained(cloudy or hazy appearance)
3. free water(liquid or frozen)
**only form that can be drawn off or separated from fuel.
TQ: no water shall be permitted in the form of Free Water (0 PPM)
Microbes(fuel contaminates)
- usually appears as a brown slime
- thrives in water
Surfacants(fuel contaminates)
“surface active agent”
- occurs naturally in fuel.
bulk fuel storage facility
at a minimum, air station fuel farms SHALL be designated and built to store fuel to support normal unit operations mission requirements, based on….
- # of A/C
- Type of A/C
- 7 day period
maximum fuel pressure control for A/C’s
- 50 psi: HC-144 & HU-25
- 55 psi: MH-65 & MH60
- 60 psi: HC-130
Fuel System Icing Inhibitor(FSII)
- type of turbine fuel additive
- normal level of FSII in the fuel is 0.07 - 0.15% by volume
- Di-Ethylene Glycol Monomethyl Ether (DiEGME) only authorized material
- If the FSII in bulk storage drops below 0.07% by volume, the air station CO MUST be notified.
- restricts bacterial growth