Quality surveillance Of Aviation Fuels

Question 0

What are the characteristics of petroleum fuels in vapor form compared to air.

Answer 0

They are heavier than air.

Question 1

How are petroleum fuels in liquid form compared to water?

Answer 1

They are lighter than water.

Question 2

Why are petroleum fuel vapors that remaining from a spill extremely dangerous?

Answer 2

They tend to remain close to the ground.

Question 3

Because of its high flashpoint, JP-5 is the only jet fuel authorized for fueling aircraft on Navy ships. When JP-8 is mixed with JP-5, what happens?

Answer 3

The flashpoint of the JP-5 is lowered and it becomes unsafe for shipboard use.

Question 4

What is the minimum flashpoint of JP-5?

Answer 4

140 degrees Fahrenheit

Question 5

If rags or clothing become soaked with JP-5, the JP-5 becomes highly flammable. What term describes this action?

Answer 5

Wicking

Question 6

What is the measure of a liquid’s resistance to flow called?

Answer 6

Viscosity

Question 7

What is the minimum percentage of gasoline vapor, by volume, for it to burn or explode?

Answer 7

1 percent

Question 8

What term describes the lowest temperature at which a fuel vaporizes enough to form a combustible vapor?

Answer 8

Flash point

Question 9

Why is a fuel spill on an asphalt surface more damaging than a fuel spill on a concrete surface?

Answer 9

The asphalt will react to the fuel and spontaneously ignite.

Question 10

What is the NATO number for JP-5?

Answer 10

F-44

Question 11

What does prolonged inhalation of fuel vapors cause?

Answer 11

Dizziness, nausea, death

Question 12

From a standpoint of fire and explosion, which type of fuel is the safest?

Answer 12

JP-5

Question 13

What visual standards must jet fuel meet to be acceptable for delivery to aircraft?

Answer 13

Clean and bright

Question 14

What are the most common types of sediment found in fuel?

Answer 14

Rust and sand

Question 15

The division between course sediment and fine sediment is made at?

Answer 15

10 microns

Question 16

The most common emulsion is the water-in-fuel emulsion. What does it look like?

Answer 16

A light -to-heavy cloud

Question 17

What mechanical method is used to separate commingled fuels?

Answer 17

None

Question 18

If adjustment of the light bulb holder is required, what position should the filament on the light bulb be in after the adjustment is made?

Answer 18

Horrizontal

Question 19

Fuel sample containers used for sediment and water tests must be made of what construction?

Answer 19

Glass bottle with nonmetallic cap

Question 20

Why should two millipore filters be used when a sediment test is conducted?

Answer 20

To eliminate any fuel color effect and it increases accuracy

Question 21

When preparing to conduct a sediment test with the CCFD, you should fill the polyethylene bottle with how much fuel?

Answer 21

800 ml

Question 22

What is the main function of the water detection component of the CCFD?

Answer 22

To measure free water

Question 23

A sample tested indicates that more than 20 ppm water is present. What additional test must you perform?

Answer 23

Test a second sample one-half the size of the standard sample and then double the results.

Question 24

What method does the NAVIFLASH flashpoint tester use to ignite combustible vapors?

Answer 24

Electric spark

Question 25

What does FSII mean?

Answer 25

Fuel system icing inhibitor

Question 26

What type of light source, if any, should you use when operating the refractometer?

Answer 26

Fluorescent or incandescent bulb

Question 27

After adding 2 ml of water to the fuel for a FSII test, how long must the sample then be shaken?

Answer 27

3 mins

Question 28

What is the minimum use level for USN and USMC aircraft the require FSII?

Answer 28

.03 percent

Question 29

What instrument is used to measure the specific gravity of petroleum products?

Answer 29

Hydrometer

Question 30

To be acceptable for delivery to aircraft, jet fuels must NOT contain more than how much free water?

Answer 30

10 ppm

Question 31

How is the volatility of a petroleum fuel measured?

Answer 31

Vapor pressure and distillation

Question 32

In order for aircraft fuel to be acceptable for delivery, aircraft must be clean and bright. They must not contain more than..........free water or..........particular contamination.

Answer 32

10 ppm/2mg/L

Question 33

Dark or black water and/or slime in drawoffs from storage tank bottoms, triggering of fuel monitors in delivery systems are all symptoms of what quality of surveillance problem?

Answer 33

Surfactant/microbiological growth

Question 34

An all level sample is one obtained by submerging a closed sampler into a container as near as possible to what point in the container/tank?

Answer 34

Drawoff level

Question 35

What is the purpose to swirl a sample bottle to form a vortex in the fuel?

Answer 35

To remove any sediment that might clean to the bottle interior so it accumulates under the vortex

Question 36

The CCFD is a portable, self – contained unit designed for both gasoline and jet fuels. This instrument is used to determine what?

Answer 36

Solid and free water contamination in fuels

Question 37

How often should you adjust the rheostat on the CCFD when sampling for free water?

Answer 37

Never

Question 38

Petroleum fuel is a liquid that contains _______energy that is converted into mechanical energy through combustion in an engine.

Answer 38

Heat energy

Question 39

How is the volatility of a petroleum fuel measured?

Answer 39

Vapor pressure and distillation

Question 40

What important step in preventing the buildup of fuel vapors is required for all spaces where fuels are handled?

Answer 40

Operate the space ventilation system.

Question 41

Contaminated fuel can cause aircraft accidents with ____________ and/or the ____________ of entire squadrons. This means that clean fuel is a LIFE-OR-DEATH matter with aviation personnel

Answer 41

loss of life, loss of aircraft, grounding

Question 42

What is the most important factor in preventing and removing contamination in fuels?

Answer 42

awareness of the people who handIe the fuel

Question 43

In order for aircraft fuel to be acceptable for delivery, aircraft must be clean and bright. They must not contain more than _____free water or _____particulate contamination.

Answer 43

10 ppm/2mg/L

Question 44

Dark or black water and/or slime in drawoffs from storage tank bottoms triggering Of fuel monitors in delivery systems are all symptoms of what quality surveillance problem?

Answer 44

Surfactant/microbiological growth

Question 45

An all-level sample is one obtained by submerging a closed sampler into a container as near as possible to what point in the container/tank?

Answer 45

Drawoff level

Question 46

The correct sampling and labeling of petroleum products is as important to fuels inspection as correct testing. _________ of poody drawn samples or _________ Samples are two common errors that can cause laboratory results to be meaningless or, worse, misleading.

Answer 46

improper containers, incorrectly identified

Question 47

What is the numerical measure ofa gasoline 's | anti-knocking property?

Answer 47

Its octane number

Question 48

What fuel quality serves as an index of how a | liquid flows?

Answer 48

Viscosity

Question 49

What fuel quality serves as an index of a fuel ‘s | potential safety and handling characteristics?

Answer 49

Its flashpoint

Question 50

What three areas of concern are associated with fuel contamination?

Answer 50

Engine failures. unnecessary rework, and delayed flights.

Question 51

What two units of measure are used to | determine the size of fuel contaminants?

Answer 51

Microns solid contaminants and parts-per-million (ppm) for water

Question 52

The term “clean and bright” refers to what fuel characteristics ?

Answer 52

The “appearance" of fuel.

Question 53

What type of water is absorbed in the fuel and is not visible to the naked eye ?

Answer 53

Dissolved water

Question 54

Microbiological growth is most common in what type of climate?

Answer 54

Tropical or semi-tmpical climates.

Question 55

What method is used to obtain a sample from a drum?

Answer 55

“Representative" sample.

Question 56

Fuel samples are designated by what classification(s)?

Answer 56

Either “ROUTINE" or “SPEClAL".

Question 57

What is present in fuel when a cloudy sample begins to clear at the bottom of a sample container?

Answer 57

"Air" is present.

Question 58

Two millipore_filters are used for what | specified reason?

Answer 58

The first filter is designed to trap solid contaminants and the second filter is subjected to clean fuel. Light transmission applied through both filters depends on the amount of solid contamination in fuel to validate the difference between the two filters.

Question 59

What type of light source is used in the free water detector?

Answer 59

Ultraviolet light.

Question 60

On the Pensky-Martens tester after turning of the stirrer, you want to apply the test flame to find out the flashpoint of the fuel. What controls the shutter and the flame burner?

Answer 60

The “knurled hand knob " controls both, the shutter and the flame burner.

Question 61

The major difference between the NAVIFLASH and Pensky-Martens testers is the method used to ignite combustible vapors signifying flashpoint. The Pensky-Martens uses a flame, what is used in the NAVIFLASH method?

Answer 61

The NAVIFLASH tester uses an electric spark.

Question 62

The NAVIFLASH method, performs the flashpoint test essentially “hands-off". It is a very sensitive piece of equipment and does require calibration. What is used to calibrate the NAVIFLASH tester?

Answer 62

The NAVIFLASH uses “N-dodecane" for calibration.

Question 63

What is the minimum level of FSII required for the SH-60?

Answer 63

The minimum level required is 0.03 %.

Question 64

At what percentage of FSII in fuel do you Notify pilots of transient and visiting foreign military aircraft?

Answer 64

When FSII level is at or below 0.07%.

Question 65

The specific gravity test is used to determine what property of aviation fuel?

Answer 65

It's used to determine the correct size of discharge ring for JP-5 purifier

Question 66

How much fuel would you need to perform a specific gravity test?

Answer 66

At least two-thirds full, of a standard size fuel sample container