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How are petroleum fuels in liquid form compared to water?
They are lighter than water.
Compared to air, petroleum fuels in vapor form have what kind of characteristics?
They are heavier than air.
Because of its high flash point, JP-5 is the only jet fuel authorized for fueling aircraft on Navy ships. When JP-8 is mixed with JP-5, what happens?
The flash point of the JP-5 is lowered and it becomes unsafe for shipboard use.
What is the minimum flashpoint of JP-5?
140 deg F
If rags or clothing become soaked with JP-5, the JP-5 becomes highly flammable. What term describes this action?
Specific gravity determinations are correlated to what temp. According to ASTM standard D1250-80?
60 deg. F
What is the measure of a liquids resistance to flow called?
What is the minimum percentage of gasoline vapor, by volume, for it to burn or explode?
What term describes the lowest temp. At which a fuel vaporizes enough to form a combustible vapor?
Why is a fuel spill on an asphalt surface more damaging than a fuel spill on a concert surface?
The fuel will dissolve the asphalt surface.
What is the NATO code for JP-5?
What does the prolonged Inhalation of fuel vapors cause?
Dizziness, nausea, death.
From the standpoint of fire and explosion, which fuel is the safest?
What visual standards must jet fuel meet to be acceptable for delivery to AC?
Clean and bright
Which of the following is NOT a form of water contam. Found in fuels?
What are the most common types of sediment found in fuel?
Rust & sand
Free water that has not settled to the bottom
The division between course sediment and fine sediment is made at?
Dark colored, fibrous, and stringy
Water in fuel emulsion
A light to heavy cloud
Can you separate commingled fuels?
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?
Fuel sample containers used for sediment and water test must be made of what construction?
Glass bottle w/ non metallic cap
Why should 2 millipore filters be used when a sediment test is being conducted?
To eliminate any fuel color effect and it increases accuracy.
Sediment test for CCFD how much fuel is needed?
A sample test indicated that more than 20 PPM water is present. What additional test must you perform?
Test a second sample 1/2 the size of the standard sample and double results.
What method does the NAVIFLASH flashpoint tester use to ignite combustible vapor?
What does FSII mean?
Fuel system icing inhibitor
What type of light source if any should you use when operating the refractometer?
Fluorescent or incandescent bulb
After adding 2ML of water to the fuel for a FSII test, how long must the sample then be shaken?
3 min vigorously
What is the minimum use level for USN and USMC AC that require FSII?
What instrument is used to measure the specific gravity of petroleum products?
To be acceptable for delivery to AC, jet fuels must NOT contain more than how much free water?
What JP-5 fueling system is used to receive fuel onboard ship?
Fill & transfer system
What are the two types of filters in the reclamation system?
Pre-filter & filter/separator 300 GPM unit
Which of the 2 independent stripping systems in the pump room has the tail pipe extending 3/4 in off the bottom of the tank?
Hand-op stripping system
Which JP-5 system is used to fuel diesel generators, boilers, small boats, and tractors?
JP-5 aux system
What are the two main purposes of the wearing rings of the centrifugal service pump?
To minimize leakage between the discharge and suction chambers and allow for wear between the impeller and pump casing
What is the function of the mechanical seals of a centrifugal service pump?
They guard against leakage from the pump and prevent air from entering the casing around the shaft.
What is the purpose of the service pump flexible coupling?
To allow connection of the pump and motor(or gear reducer) shafts with a min amount of misalignment.
Where are the service pump controllers, control panel, indicators and HMI flat panel display located?
JP-5 pump rooms
What is the rated capacity and operating pressure of the transfer pump used in conjunction with the model B214AS-300 purifier?
300 GPM @ 50 PSI
Sliding vanes to the rotary vane pump are made of what type of material?
What system is used by an ABF to supply fuel to the AIMD jet test shop for troubleshooting AC engines?
JP-5 service system from AFT filter leg.
What pumps are used to remove the last 24" in of usable fuel remaining in the storage tanks after the transfer pump lose suction & when the consolidating fuel or before ballasting a storage tank?
Motor stripping pump
What components of the rotary vane prevents leakage from occurring between the cylinder heads and cylinder?
What type of flexible pump coupling uses a gasket & 2 seal rings fitted to its covers to prevent leakage?
Rex chain coupling
What type of flexible pump coupling is made of two bronze halves cushioned w/ a rubber spider?
Allows for straight flow w/ minimum amount of restriction
globe valve may be used to limit fuel flow through the valve by doing what?
The butterfly valve uses what kind of seat that is pressure energized to assure positive shutoff & that compensates for pressure & temp changes as well as wear?
What component of the limitorque valve op regulate the vertical travel of the valve stem?
The hand wheel clutch of the limitorque valve op allows for?
Manual op of the valve
What actuator is shipped from the manufacturer with the mechanical seal clutch sets at 150% above the larger of the open or close torque setting in pounds?
Tri-tech valve operator
In the tri-tech valve op, what component always tracks the valve position, whether driven manually or electrically?
When, if ever are the service systems service pumps used to cross-connect with the transfer systems transfer pump suction header?
When the service pumps are used for offloading JP-5
Swing check valve
Valve that uses a disk that is pinned-hinge to the valve body & closes by gravity under "no flow" conditions
What are the two types of packing used for packing gland leaks?
String and ring type packing materials
What type of manifold has a transfer main-side valve and a tank-side valve?
Double valve tank manifold
What component of the service filter have 2 circular metal bulkheads and provide the means of installing the filter element mounting assemblies?
What provides a tight seal at both ends of the standpipes on the element mounting assemblies?
Synthetic rubber gaskets
When installing filter elements on the mounting assembly, what is the correct value of torque applied?
12 foot pounds or 144 inch pounds
What 2 hydraulic control valves to the filter hydraulic control system are located in the filter discharge line?
Auto shutoff valve and pilot valve
What's the main purpose in the addition of the X-75 float tester?
To provide a means of mechanically operating the float control valve to prevent contaminating the system with water.
What is the rated capacity & op pressure of the first-stage reclamation filter?
300 GPM @ 125 PSI
The worm wheel gear engages what component located at the base of the spindle assembly to drive the purifier bowl?
How many intermediate disks are in the 300 GPM purifier?
When screwing the feed tube assembly into the paring disc, how many complete turns are required to ensure that the feed tube and paring disc are properly engaged?
3 to 3 1/2 complete turns
When tightening the coupling ring, what max deg. Is allowed for the coupling ring alignment mark to pass the aligning mark on the bowl top?
What kind of gauge is normally installed on the suction side of JP-5 pumps?
What are the four types of JP-5 tanks?
Wing, deep centerline, double bottom, peak
In what 2 major categories are JP-5 tanks grouped?
Storage & service
Where is the Ohmart/VEGA STAR TLI mounted?
To the sounding tube
What does the HMI display provide?
Graphical screen displays the ships JP-5 fuel system to monitor equipment and tank status.
What is the color-code symbol for a closed valve on the SMART console control screen?
Steady blue, shown perpendicular with the piping.
On the SMART control console screen and HMI displays, what is the color code for stripping piping?
What are the 3 op stages to the AFOSS
1) divo copy 2) work center copy 3) work station copy
When receiving fuel from shore tanks, what are the acceptable requirements, in milligrams per liter for sediment levels?
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