3.2 ac replenishment Flashcards

1
Q

when working with msds, what must you always do with ppe

A

wear the approved ppe as outlined in the msds when carrying out replenishing procedures

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2
Q

describe the nato code for fuel

A

letter/ number code and a symbol to identify fol products

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3
Q

describe the bjsd for fuel

A

consists mainly of two or more letters followed by a number

letters- code designating the product
numbers- refer to properties such as viscosity and consistency

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4
Q

how do you identify the correct fuel to be used

A
aircraft rnzaf 700
aircraft replenishment and procedures /ssrps
aircrafts replenishment point
aircrafts maintenance manual 
nzap 6005.009-1
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5
Q

what main type of aviation kerosene do we use

what additional types are used

A

avtur fsII
f34

additional type 1- avtur
f35
jet a-1

additional type 2-
avcat
f44

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6
Q

what types of additives do we use with kerosene based fuel

A

fuel system icing inhibitors- fsII

anti static additive- ASA

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7
Q

what does FSII do in addition to its main purpose

A

prevent microbiological growths in the fuel tanks

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8
Q

sources of fuel supply

A

tanker refuelling
hydrant refuelling
fuel bladder or fuel cell, used with a pump and filter
drum, used with a pump and filter

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9
Q

personal danger with regards to fuel and fuel hazards

A
toxicity
inhalation-nil at room temp
eye-minimal
skin-minimal
oral-slight
aspiration- highly hazardous

asphyxiation

dermatitis
removes the natural fats from skin

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10
Q

explain the classifications of fuel contamination

A

chemical
inadvertent mixing of two or more hydrocarbon fuels or contact of another chemical with fuel
-effects the chemical and physical properties of the fuel and is only detected by laboratory testing
- chemical contamination is prevented by isolating fuels, providing separate handling systems and good housekeeping

biological

  • causes fuel to be corrosive, and subsequent damage to ac fuel system
  • prevented by fuel quality control, drainage and inspection
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11
Q

what are the types of water contaminants

A

dissolved
-absorbed by fuel. no effect on ac systems unless precipitated out by cooling

free
-large droplets which stick to the side of the container, or in large groups that settle at the bottom of the tank

entrained
-very fine, cloud like. usually settles to the bottom of the tank

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12
Q

types of emulsions found in contaminated fuel

A

water

fuel

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13
Q

sediments found in contaminated fuel are usually generated from which sources

A

rust, dust, grains, tank scales, paint, brass particles, al and fibres, sand

  • tanks, pipes, hoses and containers which store the fuel
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14
Q

how are fine particles removed from ac fuel systems

A

micronic filters with a coalescer fitted to the dispensing vehicle and equipment

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15
Q

safety measures for controlling the quality of fuel

A

take a fuel sample on ac at first flight of day

dissolved water check at the source/supply
- base refueling section responsible for carrying out checks when ..
fuel is delivered to base by the contractors,
every morning on fuel stored in tanks
every morning on any rnzaf fuel dispensing equipment

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16
Q

a fuelling zone surrounding a fuel vent takes how long to dissipate to a safe level

A

1 minute after fuel transfer has ceased

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17
Q

when can you refuel/defuel in a hanger and what restrictions must be applied

A

when a senior engineering officer permits

a manned foam producing fire vehicle to be stationed immediately outside the hanger doors

the hanger doors must be opened

a towing vehicle and driver positioned to remove the aircraft and the equipment in case something goes wrong

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18
Q

what are the safety distances for the operation of transmitters with regards to herf

A

fuelling and defuelling operations to be carried out so that fuelling zones are at least

10m from any operating vhf or uhf radio
30m from any operating hf radio
30m from any radiating radar

approved flightline management radios of less than 5watts output can be used up the the fuel zone boundaries

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19
Q

methods of refuelling

A

gravity (over wing, open line)

pressure

hot (engines running)

20
Q

methods of defuelling

A

gravity system
completed through the filler cap-suction hose,
fuel tank drain points,
specific defuel cocks

pressurized system

21
Q

NATO symbol for oil and hydraulic fluid

A

Oil- square
Hydraulic fluid-circle
Both black

22
Q

Itypical systems that use aeronautical oils

A

Gte
Transmission systems
Reduction gearboxes
Air conditioning units

23
Q

Sources of supply for oil

A
Cans fitted to oil rigs or dollies
44 gallon drum-hand pump
Oil dolly with hand pump
5lt can containers 
Hydraulic reservoirs can also be replenished using hydraulic test stands
24
Q

Purpose of replenishing water and waste systems is to

A

Ensure potable water supplies are clean, fresh and free of contamination
Ensure that waste systems are sanitised properly, contain the correct amount of chemical to maintain sanitation and aren’t going to overflow

25
Q

Two types of systems water/waste replenishment

A
  • Waste disposal
    1) direct exit units herc urinal syst
    2) self contained units Orion 6gal chemical toilet
  • Potable water
26
Q

Agents used in waste disposal systems or for the cleaning/servicing of these systems are

A

Chemical compounds
Organic compound decomposition fluid

RNZAF use chemical compounds

27
Q

Hazard of human waste

A

Extremely corrosive if spilled on Ac structure

28
Q

Safety precautions (personal hygiene) water and waste replenishment

A

Appropriate ppe as defined in Ac mm and msds

Always wash after servicing toilets/sanitary equipment

29
Q

Waste disposal systems servicing

A
Remove waste bucket from seat
Dispose
Flush and clean bucket
Replenish toilet with special fluid/water mix 
Refit 
Toilet paper
30
Q

Tech admin for water and waste replenishment

A

Signed for on the servicing block it was carried out on in the 700

31
Q

Ac high/low pressure has purpose

A

Ensure all systems are at the levels required in the
Ssrps
Olm workcards
Ac mm

32
Q

Types of high/low pressure replenishments

A

Nitrogen
Low- upto 600
High- 600 and above

Oxygen
Lox
Gox

33
Q

Identification of high/low pressure gases

A

Oxygen-Black body white neck
Nitrogen-grey body grey neck
Thread formation- LH combustible
RH-non combustible

34
Q

Replenishment point markings high low pressure

A

Nitrogen- black square with circle corners
Oxygen- two black lines
Japan flag one

35
Q

Charging units low high pressure

A

Nitrogen- less rig

Oxygen- dependent on the type of oxygenr gox or lox

36
Q

Hazards, nitrogen

A
Inert gas
Low thermal expansion coefficient 
Aids in corrosion prevention 
—
Natural asphyxiant 
Dieselling can occur when carryout replenishment of nitrogen systems.
37
Q

What’s dieselling

A

Nitrogen system. Component with a small volume is inflated rapidly and causes a increase in pressure and temperature leading to combustion

38
Q

Oxygen hazards

A

Low temperature - materials get weak and brittle
Readiness of the liquid to return to gas(862:1)

Oxygen enriched environment- Shit burns quicker

39
Q

Common inflation adapters for nitrogen replenishment

A

Tyre inflation kits
Low pressure chuck
High pressure chuck

40
Q

Tyre inflation kit consists of

A

Inflation valve assembly
2-4 gauges
Flexible hose assy
Milton inflation adapter

41
Q

Hazards gox

A

Spontaneous combustion

Main contamination-moisture.

42
Q

Safety precautions nitrogen

A

All equipment to be free from contamination

Regulators and adapters to be opened slowly

43
Q

Safety precautions oxygen

A

Serviceable condition, free of oil, grease and fuel
Hands/clothes clean and free when handling equipment
Pers not to wear hydrocarbon based cosmetic products
Use only tools that form part of a oxygen composite tool kit
If A confined space becomes enriched with large amounts of gox/lox secure operations clear area and provide ventilation
Don’t direct oxygen at pers/clothing
Radio frequency transmitters are not to be used 20m when handling oxygen

44
Q

Ac purging and replenishment safety precautions ustions

A

Approved fire extinguisher within reach
Don’t carry out oxygen purging/replenishment while Ac is being replenished with fuel,oil, fluid,maintenance
Ace and gse grounded
Ac electrical sys switched off and external power removed from Ac
Don’t perform oxygen purging during electrical storm
Safety distances kept

45
Q

Safety distance for purging and replenishment safety precautions

A
20m
Taxiing Ac 
Vehicles
Gpus 
Non oxygen pers
Building and hangers
Refuelling tabkers 
Fuel spills
Flammable materials 
Potential ignition sources
50m 
Ciggies 
Naked flame