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Pumproom Flashcards

1
Q

What’s the FSII vol% of JP-5

A

0.07 -0.10% is the specification limit but the receipt limit is 0.06% to 0.15%……MOST IMPORTANT NO LOWER THAN .03 for FSII as per CVN-71

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2
Q

What’s the purpose of the JAM function on the service pump?

A

Cuts off the service pump if it doesn’t reach the desired current for the motor and can be set to 150% -400% or 0.1 -2.5 seconds when it times out the AC motor controller.

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5
Q

Mid ship X conn starboard side and AFS No.11

A

ACFT elevator 2-133-5

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6
Q

What’s Vac and Vdc stand for?

A

Alternating current and direct current

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7
Q

Name all the contam tanks for 2 pump,3pump and cargo.

A

44-3,44-4,205-7,205-8,140-2

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8
Q

AFS NO.6

A

Male head 2-64-6-L

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10
Q

What type of unit transfer pump do we have ?

A

Unit E-4641 transfer pump

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12
Q

What’s the theory of operation for the rotary vane pump?

A

The rapid rotation of the shaft and rotor forces the vanes in sliding contact with the cylinder bore by centrifugal forces and by push rods. The passage of vanes through the lower portion of the cylinder bore draws fluid into the pump at the same time forces it out the discharge port rotary vane pumps are positive displacement pumps this mean they will pump air which creates a vacuum causing liquid to be pulled into the suction side of the pump.

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13
Q

AFS No. 8

A

Aft mess decks 2-148-0-L

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17
Q

At what psi does the pressure control switch (PCS) open and close

A

Opens at 20 psi and closes at 35 psi

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18
Q

What’s the purpose of a high power turn?

A

To burn off fuel or for testing.

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19
Q

What’s the suction lift on the transfer pump ?

A

15 inch suction lift HG

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21
Q

What the max HP and brake HP for the transfer pump ?

A

25 max load horsepower and brake horse power is 14.2

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23
Q

What are the 6 parts of a Falk type steel coupling?

A
  1. seal rings
  2. cover halves
  3. hubs
  4. grid members
  5. gasket
  6. Alemite grease fitting
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25
Q

How much does the transfer pump weigh?

A

2337 pounds

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27
Q

What does VPI stand for?

A

Valve placement indicator

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28
Q

What is the theory of operation for the purifiers?

A

Fuel goes through the inlet of the inlet/outlet housing goes through the feed tube assembly then goes down the tubular shaft and then falls down on to the spindle cap nut and gets disbursed outward to the distributor and all the sediments get spun out to the bowl wall where it sticks and creates a layer of cake and then fuel gets sucked back up through the distribution holes by the pairing disk because it makes a centripetal pump but on its way back up it hits the discharge ring which separates the fuel from the water because fuel is lighter than water it goes up around the feed tube assembly and sucked back up into the outlet of the inlet/outlet housing and the water goes do through the water discharge chamber.

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29
Q

AFS No 12

A

Reactor head 2-225-4-L

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30
Q

How high does the non vortex bell mouth and splash plate sit from the bottom of the tank?

A

6-24 inches off the bottom of the tank

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31
Q

Station 5 valve

A

G4 male berthing 2-64-1-L

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32
Q

What is S-15

A

Grease ball bearings ⚽️

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34
Q

Where is station 13 valve?

A

P-way(the one on the way to QA) 2-190-3-L

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36
Q

What is the grade and weight of the purifier motor oil?

A

80 grade 90 heavyweight as per purifier tech manual

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37
Q

How many elements in the prefilter and what are they made out of and how tall are they and what is the diameter?

A

5 elements in the pre filter made out of stainless steel and stand on 18 inch stand pipes and 6 1/10’s of an inch in diameter

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39
AFS No 14
P-way 2-88-2-L
40
What is jp-5 made out of
100% Karosene and 0.04% naphthalene
42
Jet test supply
Reactor berthing 3-225-0-L
43
Station 9 valve
Urinalysis office 2-128-1-L
44
Coupling ring is NOT to exceed what degree and inches?
20-25 degrees or 4 1/2 inches. Cause of this is excessive wear or corrosion.
48
What’s the approx capacity of jp-5 CVN-71 is able to hold?
3 1/4 million gallons
50
What does the timing relay do for the service pump?
It times out at 30(+/-5 seconds) it shuts down the pump if it does operate properly after the Pressure control switch closes.
51
How big is a spacer on the intermediate disks
0.050
52
How big is a micron ?
1/1000 of a millimeter
53
AFS No 10 and AFS No 18
P-way 2-190-4-L
55
On a motor stripping pump and transfer pump how many vanes and pushrods?
6 vanes | 3 pushrods
56
How do they test for FSII
They put fuel in a Ungraduated then drop a thermohydrometer in it. And look at API to figure out the conversions for FSII
58
Mid ship X conn port
Male berthing 2-143-2-L
61
How many turns for the spring loaded T-handle into the pairing disk?
3 to 3 1/2 quarter turns
63
R-37
Clean and inspect purifiers
64
What are the four types of tanks?
Double bottoms, deep center line, wing tanks and peak tanks.
65
What’s another name for JP-5?
F-44 as per NATO
67
AFS No. 6A
Disbursing p-way 2-113-2-L
69
Where can you strip into?
The main Overboard Stowage Contam
72
Name all the parts and assemblies of the purifier (30)
``` Inlet and outlet connections Inlet and outlet housing Spring loaded T-handle with regulating tube(feed tube assembly) Bowl cover Water observation port Bowl top Pairing disk Discharge ring Coupling nut Coupling ring Top disk Intermediate disks Tubular shaft Spindle cap nut Distributor Bowl casing Bowl assembly Cover clamps Lock screw plugs Worm wheel gear and drive assembly and worm wheel quill Oil fill cap /w dipstick E-brake Speed indicator cap Motor oil sight glass Spindle assembly 80 grade 90 heavyweight motor oil Water discharge chamber A/c motor controller Bowl drain connection Frame ```
73
Station 15 valve.
Decon head 2-230-1-L
74
Whats the purpose of a low power turn?
Low power turns are for maintenance
75
What are the 3 sizes for limitorques
130,150 and 550
76
Who makes or transfer pump ?
A dover resources co.
77
S-11
Change oil for purifiers
79
Each pump is submersible to how many feet?
15 feet
80
What are the stationary wearing rings attached to ?
The pump casing
81
What is the motor speed and pump speed? For transfer pump
1800 rpm for motor and 337 rpm for pump
82
What is the purpose of the gland plates?
To compress the mechanical seal.
84
What are the designated defuel tanks for 3 pump?
200-3 and 200-4
85
All the parts of a service pump from end to motor side
Adjusting screw with bearing cap with grease fitting and grease relief Bearing brackets, with ball bearings on the inside. Also a vibration indicator on top Water slinger Gland plate Durametallic Mechanical seal on the inside of the upper and lower casing. Shaft sleeve Station wearing ring Rotating wearing ring Impeller Rotating wearing ring Station wearing ring Shaft sleeve Stuffing box and throat bushing Mechanical seal on the inside of the upper and lower casing Gland plate Water slinger Bearing bracket with bearings Shaft sleeve nut then a bearing adapter and then a falk type steel flex coupling with a red terricata coupling guard and then a/c motor controller
86
How far off the bottom does a storage stripping tail pipe sit
1 1/2 inch off the bottom of the tank
89
What are the two types of swing check valves?
Wafer check valve and one way check valve
93
Starboard side X-conn fwd and aft leg valves
Is in the filters 1 and 3
94
What does aux fuel?
Provides fuel to EDG’s (emergency diesel generators) auxiliary boilers , small boat filling stations or combat vehicle/support equipment filling station
95
What is the difference between wafer check and one way check
One way check as one door 🚪 to allow fuel to go through and only opens one way as for wafer check valve it has two doors split down the middle to allow fuel to pass.
96
What’s the maximum deflection for the timing belt on the transfer pump?
MAXIMUM is 1 inch even at 1 inch of deflection it should probably be replaced due to loss of tension and wear
97
What is most of the piping made out of and why?
Copper nickel due to its resistance to rust and corrode.
98
How do you reset a limitorque?
Push the grey button on the back and hold for 3-5 seconds and let console op know when it’s finished so they can test it.
99
What’s the boiling point of JP-5 ?
280 - 572 F
101
AFS No.16
Male berthing 2-146-3-L
103
Port side X-conn fwd and aft leg valves
Is in 2 and 4 filter
108
U-1
Rachet hook for purifiers
109
Where can you strip from?
Stowage Defuel Contam Sump
110
X-75 test
Press the button on the portable float control valve which forces the karosene ball upwards which shuts the modified CLA Val and makes a (fizzz) sound and then ball floats back down and opens it back up
111
Rex chain coupling parts (13)
1. Coupling cover seal ring 2. Coupling half 3. Socket head set screw 4. Connection pin 5. Chain 6. Cotter key 7. Lube hole screw 8. Plastic coupling cover 9. Cover screw 10. Coupling cover gasket 11. Coupling half 12. Coupling cover seal ring 13. Locating pin
112
Love joy coupling (5)
1. Coupling half 2. Rubber spider (neofrean) 3. Coupling half 4. Socket head set screw 5. Shaft key
113
What are the sump TLI’s for 2 pump and 3 pump
64-2 and 197-2
114
What are all the types of valves? (7)
``` Hoke valve Butterfly valve One way check waffer valve One way check valve (swing check valve) Globe valve Modified glove valve Gate valve ```
115
How does a hoke valve turn?
Counter clockwise
116
Where is Xfer to Serv valve in 2 pump
Between service pump 1 and 2
117
Where is Serv to Xfer in 2 pump?
Between 2 and 3 transfer pump
118
Difference between simplex and compound pressure gauge? And what’s the 3rd pressure gauge.
Compound and go below zero and measure vacuum while simplex only measure pressure output. Differential gauge measures the difference in output between the 2.
119
Max differential between pre filter and reclaim
20 psi
120
Service pump approx weight and motor weight .
3700 approx weight and motor weighs 2140 pounds
121
Build transfer pump (top-down) (7)
1. Motor 2. Motor sprocket 3. Guard door 4. Back belt guard 5. Belt tension assembly 6. Timing belt 7. Pump sprocket
122
Transfer pump build (left to right)(24)
``` Locknut Stud Oil seal Grease fitting Grease relief Inboard bearing cover Bearing cover gasket Bearing locknut Bearing locknut washer Bearing Locknut Stud Drain plug O-ring Inboard head John crane mechanical seal O-ring Disc Casing Liner Shaft key Rotary shaft assembly Pushrod(brass) Vanes(palamite) ```
125
What does specific gravity test do?
Test relative density
127
Station 7 valve
MWR void 2-88-3-L
128
AFS No.4
2-34-2-L p-way
129
What are the rotating wearing rings attached to ?
The impeller
130
What’s another name for a one way check valve?
Swing check valve
133
Wet weight and dry weight of reclaim
Wet weight 2800 lbs | Dry weight 1200 lbs
135
Valves for motor stripping?
Suction, throttle and discharge
136
AFS No.2
Admin female head 2-17-4-L
138
What type of strainer is on the inlet of the motor stripping pump
40 mesh basket strainer
139
Where is the valve for station 1 and 3 second deck alignment
Female berthing up fwd starboard side 2-17-0-L,2-25-0-L
141
Motor stripping pump specs
Rotary vane/ positive displacement. 50 GPM/ 50 psi pressure relief at 62 1/2. Pump rotates at 640 rpm while the motor rotates at 1750. 3 to 1 ratio 😉
147
What does PSIG mean?
Pounds per square inch gauge
148
How do you reset a target rock?
Put valve in the fully own position and then close it and then set it in the middle.
150
How many fluid oz does our glass bottles hold?
32 fl oz
152
What is pS/m
Picosalinity or picosiemen is the measurement of how conductive a liquid is in meters.
155
Station 2 and 4 for second deck alignment valve
2 is admin female head 2-17-4-L and 4 is in the p-way 2-34-2-L
156
What is U-2
Test pump discharge pressure relief
157
What is the purpose of the motor stripping pump?
To remove water and sediment
160
When is a overhaul done on the transfer pump?
After 3000 hours of operation
161
What does hydrocarbon mean?
Hydrogen carbon
164
U-5
Compression for for purifiers
166
What does PSIG mean?
Pounds per square inch gauge
167
How do they test for viscosity
They put 60 cubic centimeters of liquid into a viscometer at 100F.
168
How do they do a specific gravity test?
They put fuel in a graduated cylinder and put a thermohydrometer in the graduated cylinder to determine the API (American Petroleum Institute)and weight of the fuel. Sizes for the discharge ring range from 200-250 mm as per ship range from 220 to 250 mm. Specific gravity tests are done regularly when changing region or climate.
172
What does a slash plate and a non vortex bell mouth fitting?
A splash plate disperses the fuel like a fan into the tank and the fitting helps it not create a current in the tank.
177
What does JP-5 stand for?
Jet propellant as per QA tech manual
178
What does HG stand for?
Hydrogyrum
179
What is S-36
Inspect oil gear reducer
181
What stops splashing within the tank?
The baffles (the walls inside the tank)
183
What is “palamite”?
Fuel resistant wood
189
What does FSII stand for?
Fuel system Icing inhibitors
190
What are the Volts, hertz and phases for the service and transfer pump
440 volts at 60 hertz 3 phases
193
What does SSU stand for?
Saybolt seconds universal
195
What type of TLI’s do we have on board?
Vega pulse
196
What test do they do for figuring out the size of the discharge ring ?
Specific gravity test
202
A-2
Inspect timing belt and motor sprockets for the transfer pump
204
What is A-12?
Inspect love joy coupling
205
What is A-29?
Replace oil gear reducer
213
Reclaim filter GPM and PSI
300 GPM at 125 PSI
223
Flood and Drain manifold and what do the colors mean?
Purple- stripping Black/green-ballast Red-de ballast

Pump Room (1 decks)

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