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ABF2 EXAM > QA > Flashcards

QA Flashcards

1
Q

What is the NATO code for MOGAS?

A

F-46

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2
Q

What is MOGAS composed of?

A

A mixture of highly volatile liquid hydrocarbons designed for use in internal combustion engines.

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3
Q

How are the characteristics of MOGAS determined?

A

By its knock value

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4
Q

What is the octane number?

A

A numerical measure of the antiknock properties of motor fuel based on the percentage of volume of isooctane in standard reference fuel.

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5
Q

What is the NATO code for JP-5?

A

F-44

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6
Q

JP-5 IS BASED ON WHAT?

A

KEROSENE

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7
Q

WHAT IS THE ONLY FUEL APPROVED FOR USE ON NAVY SHIPS?

A

JP-5

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8
Q

WHY IS JP-5 THE ONLY FUEL APPROVED FOR USE ON NAVY SHIPS?

A

BECAUSE IT HAS A HIGHER FLASH POINT

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9
Q

WHAT HAPPENS WHEN JP-5 IS MIXED WITH OTHER FUELS?

A

THE FLASH POINT DROPS/LOWERS AND BECOMES UNSAFE

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10
Q

JP-5 CAN BE USED TO SUBSTITUTE WHICH TYPE OF FUEL?

A

DFM (DIESEL FUEL MARINE) NATO CODE -F76

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11
Q

WHAT IS THE NATO CODE FOR JP-4?

A

F-40

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12
Q

WHO USES JP-4?

A

ARMY, AIR FORCE AND SOME SHORE BASED STATIONS

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13
Q

WHAT IS THE NATO CODE FOR JP-8?

A

F-34

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14
Q

WHAT IS THE FLASHPOINT OF JP-=8?

A

100 DEGREES FAHRENHEIT

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15
Q

WHAT IS THE FLASHPOINT OF JP-5?

A

140 DEGREES FAHRENHEIT

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16
Q

WHAT IS THE FLASH POINT OF JP-4?

A

0 DEGREES FAHRENHEIT

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17
Q

WHAT IS VOLATILITY?

A

THE RATE AT WHICH FUEL CHANGES TO VAPOR

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18
Q

WHAT IS THE VAPOR PRESSURE OF JP-5 AT NORMAL ROOM TEMP?

A

0 PSI

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19
Q

WHAT IS SPECIFIC GRAVITY?

A

THE RATIO OF WRIGHT OF A GIVEN VOLUME OF FUEL

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20
Q

WHAT IS THE SPECIFIC GRAVITY OF JP-5 USED FOR?

A

TO DETERMINE THE PROPER SIZE OF THE DISCHARGE RING ON THE PURIFIER

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21
Q

WHAT IS VISCOSITY?

A

THE MEASURE OF A LIQUIDS RESISTANCE TO FLOW

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22
Q

WHAT IS SOLVENCY?

A

THE ABILITY THE FUEL HAS TO DISSOLVE MATERIALS

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23
Q

WHAT IS THE FREEZING POINT OF JP-5?

A

-51 DEGREES FAHRENHEIT

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24
Q

ALL GRAVITY DETERMINATIONS ARE CORRELATED TO WHAT TEMP?

A

60 DEGREES FAHRENHEIT

25
Q

WHAT IS THE FREEZING POINT OF JP-8

A

-53 DEGREES FAHRENHEIT

26
Q

WHAT IS A FLASH POINT?

A

THE LOWEST TEMP. AT WHICH THE FUEL VAPORIZES ENOUGH TO FORM A COMBUSTABLE VAPOR

27
Q

WHAT ARE SOME OF THE SAFETY PRECAUTIONS YOU MUST TAKE WHEN HANDLING MOTOR GASOLINE?

A

AVOID EYE CONTACT, DO NOT INHALE VAPORS, DO NOT UNTER TANKS THAT HAVE CONTAINED GASOLINE UNTIL TRACES OF THE VAPORS HAVE BEEN ELIMINATED.

28
Q

APPROX. HOW MANY MICRONS ARE IN 1 INCH?

A

25,400 MICRONS

29
Q

WHAT IS PPM?

A

PARTS PER MILLION; USED TO MEASURE WATER CONTAMINATION

30
Q

WHAT IS THE MAX PPM THAT JP-5 CAN HAVE AND STILL BE ACCEPTABLE FOR AIRCRAFT REFUELING?

A

5 PPM

31
Q

WHAT IS THE MAX MG/L OF SEDIMENT THAT JP-5 CAN HAVE AND STILL BE ACCEPTABLE FOR AIRCRAFT REFUELING?

A

2 MG/L

32
Q

WHAT DOES THE TERM “CLEAN” MEAN?

A

THE ABSENSE OF ANY CLOUD, EMULSION, VISIBLE SEDIMENT OR FREE WATER.

33
Q

WHAT DOES THE TERM “BRIGHT” MEAN?

A

THE FUEL HAS A SHINY, SPARKLING APPEARANCE

34
Q

WHAT ARE THE DIFFERENT TYPES OF CONTAMINATION?

A

MATERIAL AND CHEMICAL

35
Q

WHAT ARE SOME EXAMPLES OF MATERIAL CONTAMINATION?

A

WATER AND SEDIMENT

36
Q

WHAT IS THE MOST COMMON CONTAMINATION?

A

WATER

37
Q

HOW CAN WATER BE PRESENT IN FUEL?

A

AS FREE, ENTRAINED OR DISSOLVED WATER

38
Q

DESCRIBE FREE WATER

A

MAY BE IN THE FORM OF A CLOUD, EMULSION, DROPLETS OR IN GROSS AMOUNTS IN THE BOTTLE OF TANKS AND CONTAINERS

39
Q

DESCRIBE ENTRAINED WATER

A

FOUND IN FUELS IN THE FORM OF VERY SMALL DROPLETS, FOG OR MIST. IT MAY OR MAY NOT BE VISIBLE TO THE NAKES EYE. WHEN LARGE AMOUNTS OF ENTRAINED WATER ARE PRESENT, FUEL WILL HAVE A MILKY OR HAZY APPEARANCE.

40
Q

DESCRIBE DISSOLVED WATER

A

THE WATER IS DISSOLVED AND ABSORBED BY THE JP-5 AND IS NOT VISILBE.

41
Q

WHAT IS ANOTHER NAME FOR PARTICULATE MATTER?

A

SEDIMENT

42
Q

HOW DOES SEDIMENT APPEAR?

A

AS DUST, POWDER, FIBROUS MATERIAL, GRAINS, FLAKES OR STAIN

43
Q

WHAT IS THE MOST COMMON KIND OF SEDIMENT?

A

SAND AND RUST

44
Q

WHAT ARE THE 2 TYPES OF SOLID OR SEDIMENT CONTAMINTION?

A
  • COURSE SEDIMENT- SEDIMENT THAT CAN BE SEEN AND EASILY SETTLES. 10 MICRONS OR LARGER
  • FINE SEDIMENT- CONSISTS OF PARTICLES 10 MICRONS OR SMALLLER. PROPER FILTRATION CAN REMOVE 98% OF FINE SEDIMENT.
45
Q

WHAT IS MICROBIOLOGICAL GROWTH?

A

CONSISTS OF LIVING ORGANISMS THAT GROW AT THE FUEL/WATER INTERFACE

46
Q

WHAT DOES MICRBIOLOGICAL GROWTH INCLUDE?

A

PROTOZOA, FUNGUS, AND BACTERIA

47
Q

WHAT IS FUNGUS?

A

A VEGITABLE LIFE;IT HOLDS RUST AND WATER IN SUSPENSION AND IS AN EFFECTIVE STABLIZING AGENT FOR THE FUEL-WATER EMULSION

48
Q

WHAT IS EMULSION?

A

A LIQUID SUSPENDED IN ANOTHER LIQUID

49
Q

WHAT ARE THE 2 TYPES OF EMULSION?

A

FUEL.IN WATER AND WATER IN FUEL (WATER IN FUEL IS THE MOST COMMON)

50
Q

HOW DOES EMULSION APPEAR?

A

AS A LIGHT TO HEAVY CLOUD IN FUEL

51
Q

WHAT IS A SURFACTANT?

A

A CONTRACTION OF TERM “SURFACE-ACTIVE AGENT” A SURFACE ACTIVE AGENT IS A SUBSTANCE THAT CAUSES A MARKED REDUCTION IN THE INTERFACIAL TENSION OF LIQUIDS

52
Q

HOW DOES A SURFACTANT APPEAR?

A

DARK, RED BROWN, OR BLACK WATER IN FILTER/SEPORATOR SUMP DRAINS, REFUELERS SUMP DRAINS OR PIPELING LOW POINT DRAINS

53
Q

WHAT IS THE MOST SERIOUS TYPE OF CONTAMINATION?

A

CHEMICAL

54
Q

WHAT IS CHEMICAL CONTAMINATION?

A

COMMINGLING

55
Q

WHAT IS COMMINGLING?

A

THE INADVERTENT MIXING OF 2 OR MORE TYPES OF FUEL

56
Q

WHAT IS A LINE SAMPLE?

A

SAMPLE TAKEN FROM A PIPELINE OF A HOSE NEAR THE DISCHARGE POINT WHILE THE SYSTEM IS OPERATING AT NORMAL FLOW RATES

57
Q

WHAT IS A COMPOSITE SAMPLE?

A

A BLEND OF SAMPLES TAKEN FROM THE UPPER, LOWER AND MIDDLE LEVELS OF A TANKS CONTENT.

58
Q

WHAT IS AN ALL LEVEL SAMPLE?

A

A SAMPLE OBTAINED BT SUBMERGING A CLOSED SAMPLER TO THE POINT NEAR AS POSSIBLE TO THE DRAWOFF LEVEL, THEN OPENING IT AND RISING IT AT SUCH A RATE THAT IT IS NEARLY BUT NOT FULLY FILLED AS IT EMERGES FROM THE LIQUID

59
Q

WHAT IS A REPRESENTATIVE SAMPLE?

A

SAMPLE USE DFOR PACKAGES STOCKS OF FUEL. ONE CONTAINER FROM A LARGE STOCK OF PACKAGED FUEL WHEN ALL ARE OF THE SAME AGE AND GRADE MAY BE SELECTED AS A REPRESENTATIVE OF THE ENTIRE STOCK.

ABF2 EXAM (2 decks)

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