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Engineering Flashcards

Improve Engineering LOK

1
Q

How many steering units are there

A

4

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2
Q

What type of system operates the steering units

A

closed loop hydraulic system

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3
Q

Where are the steering units located?

A

Aft steering: 3rd deck frame 247 port and stbd side

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4
Q

where is the ram assembly located

A

4th deck below aft steering

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5
Q

how many steering units are online during normal operation

A

2, 1 port and 1 stbd. 1+4 on even days, 2+3 odd days

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6
Q

where can you steer the ship from

A

bridge, aft steering, secondary conn in DCC

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7
Q

what is the purpose of emergency steering

A

brings the rudder amidships during a casualty

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8
Q

explain the two modes of steering

A

non-followup: helm electric control from the bridge

Followup: has the trick wheel engaged in aft sterring

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9
Q

what is the purpose of the steering pumps

A

consists of two independent variable hydraulic pumps that move hydraulic liquid to the main system

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10
Q

what is the purpose of the trick wheel

A

provides local hydraulic control of the steering system in case of failure of the remote steering system

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11
Q

what is the purpose of the differential control box

A

mechanically positions the tilt box of the main hydraulic pump to the required angle and position

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12
Q

what is the purpose of the ram assembly

A

the ram unit is mounted athwartship and consists of a single ram operated by opposed cylinders, the ram is connected by links to the tillers of the twin rudders. When oil pressure is applied to one end of the operating cylinder, the ram will move, causing each rudder to move with it

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13
Q

describe the emergency steering pump

A

a hand pump and associated service lines provided for local manual operation of the ram in case of failure of both hydraulic pump units

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14
Q

describe the rack and pinion follow up assembly

A

the rack and pinion follow up assembly transmit a signal to the differential control box when the ordered steering operation has been completed

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15
Q

What are the four phases of the refridgeration cycle

A

compression, condensation, expansion, evaporation

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16
Q

what is the purpose of the AC system

A

provide cooling to vital electronic equipment, crew comfot

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17
Q

how many ac plants are on board

A

ten

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18
Q

classify the AC plants

A

york 363 ton centrifugal

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19
Q

classify the refers

A

york 7 ton reciprocating

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20
Q

how many refers do we have on board

A

5

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21
Q

what color is chill water piping

A

light blue with green stripes

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22
Q

what color is refridgerant piping

A

dark purple

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23
Q

what is the designed temp for chill water

A

44F

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24
Q

what is the primary AC unit for the island

A

7

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25
Describe the compression phase
a low pressure, high temp vapor is turned into a high pressure, high temp vapor
26
describe the condensation phase
a high pressure, high temp vapor is turned into a high pressure, high temp liquid
27
describe the expansion phase
a high pressure, high temp liquid is turned into a low temp, low pressure liquid
28
describe the evaporation phase
a low temp, low pressure liquid is turned into a low pressure, high temp vapor
29
how many cats are there and which are bow/waist
we have 4 cats. 1 and 2 are the bow, and 3 and 4 are the waist
30
how many cat accumulators are there
four
31
explain CSCC
it is a system to limit the amount of steam the accumulators can draw from main steam
32
what is the minimum pressure for a cat shot
450psig
33
what are the two fire suppresion systems for the cats
trough smothering and launch valve smothering
34
what is the casualty response for a fire in the launch valve room
steam smothering
35
how many o2n2 plants are on board
two
36
where are the 02n2 plants located
HB1 port side and HB3 stbd side
37
what is the purpose of LOX
aviation breathing oxygen
38
what is the purpose of LIN
wart clinic, freeze seals, shrink fittings
39
what is the required PPE for LOX/LIN
face shield, molders boots, cryogenic overalls, welders gloves
40
what is the storage capacity for LOX/LIN
1500gal LOX, 1500 LIN for each plant
41
where is LOX stored
LOX carts
42
What does the yellow light above o2n2 signify
transfering LOX
43
How many list control pumps are there
2
44
where are the list control pumps located
4a shaft alley
45
what is the capacity of each list control pump
1800 GPM
46
how many list control tanks are there
10
47
where is the list control system operated from
list control panel in DCC
48
how many sewage collection tanks are on board
10
49
how many CHT pumps are on board
four
50
classify the CHT pumps
eddy pumps, rated for 400 GPM
51
what are the three operating modes of the CHT system
inport, transit, at sea
52
at what distance can CHT be pumped overboard
3 miles
53
what dangerous gas is associated with the CHT system
Hydrogen Sulfide
54
what are the three diseases you can get from CHT
cholera, hepatits, typhoid
55
what does hydrogen sulfide smell like
rotten eggs
56
what are comminutors
break down solids before going to the CHT tanks
57
what is the purpose of the A coil
has loops in the vertical fore and aft planes, produces a magentic field that counteracts the magnetic field created by the awthardship induced magnetization
58
what is the purpose of the M coil
main coil, encircles the ship in a horizontal plane near the water line, produces a magnetic field that counteracts the field produced by the vertical permanent and vertical induced magnetization of the ship
59
what is the purpose of the FP-QP coil
used primarily to counter the magnetic field produec by the ships longitudinal permanent magnetization, supplements the M coil
60
what is the purpose of the FP-QI coil
counters the field produced by the ships longitudinal induced magnetization
61
what is the purpose of the degaussing switchboard, and where is it located
contains operator controls, control circuits, and status indicators for all coils, it is functionally divided to facilitate operation and maintenenace
62
what is the purpose of the degaussing remote panel
provides status indicators and a leading switch for emergency manual operation in a remote location
63
what are the two types of fuel oil on board
JP5, MOGAS
64
what is the purpose of the fuel oil service system
provides DFM from the fuel oil service tans to the boiler burners
65
what is the purpose of the fuel oil transfer system
allows the transfer of fuel from different tanks to the fuel service tank
66
what is the purpose of the JP5 service system
provides JP5 from the JP5 fuel tank to the flight deck for aircraft refueling and to the boilers for emergency use
67
what is the purpose of the JP5 transfer system
allows transfer of JP5 from different storage tanks to the service tanks
68
what is the purpose of the JP5 stripping system
allows the removal of sediment and water from the bottom of fuel tanks
69
high pressure air psig
600-5000
70
low pressure air psig
100-125

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