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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
Q

Describe the compression phase

A

a low pressure, high temp vapor is turned into a high pressure, high temp vapor

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26
Q

describe the condensation phase

A

a high pressure, high temp vapor is turned into a high pressure, high temp liquid

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27
Q

describe the expansion phase

A

a high pressure, high temp liquid is turned into a low temp, low pressure liquid

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28
Q

describe the evaporation phase

A

a low temp, low pressure liquid is turned into a low pressure, high temp vapor

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29
Q

how many cats are there and which are bow/waist

A

we have 4 cats. 1 and 2 are the bow, and 3 and 4 are the waist

30
Q

how many cat accumulators are there

A

four

31
Q

explain CSCC

A

it is a system to limit the amount of steam the accumulators can draw from main steam

32
Q

what is the minimum pressure for a cat shot

A

450psig

33
Q

what are the two fire suppresion systems for the cats

A

trough smothering and launch valve smothering

34
Q

what is the casualty response for a fire in the launch valve room

A

steam smothering

35
Q

how many o2n2 plants are on board

A

two

36
Q

where are the 02n2 plants located

A

HB1 port side and HB3 stbd side

37
Q

what is the purpose of LOX

A

aviation breathing oxygen

38
Q

what is the purpose of LIN

A

wart clinic, freeze seals, shrink fittings

39
Q

what is the required PPE for LOX/LIN

A

face shield, molders boots, cryogenic overalls, welders gloves

40
Q

what is the storage capacity for LOX/LIN

A

1500gal LOX, 1500 LIN for each plant

41
Q

where is LOX stored

A

LOX carts

42
Q

What does the yellow light above o2n2 signify

A

transfering LOX

43
Q

How many list control pumps are there

A

2

44
Q

where are the list control pumps located

A

4a shaft alley

45
Q

what is the capacity of each list control pump

A

1800 GPM

46
Q

how many list control tanks are there

A

10

47
Q

where is the list control system operated from

A

list control panel in DCC

48
Q

how many sewage collection tanks are on board

A

10

49
Q

how many CHT pumps are on board

A

four

50
Q

classify the CHT pumps

A

eddy pumps, rated for 400 GPM

51
Q

what are the three operating modes of the CHT system

A

inport, transit, at sea

52
Q

at what distance can CHT be pumped overboard

A

3 miles

53
Q

what dangerous gas is associated with the CHT system

A

Hydrogen Sulfide

54
Q

what are the three diseases you can get from CHT

A

cholera, hepatits, typhoid

55
Q

what does hydrogen sulfide smell like

A

rotten eggs

56
Q

what are comminutors

A

break down solids before going to the CHT tanks

57
Q

what is the purpose of the A coil

A

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
Q

what is the purpose of the M coil

A

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
Q

what is the purpose of the FP-QP coil

A

used primarily to counter the magnetic field produec by the ships longitudinal permanent magnetization, supplements the M coil

60
Q

what is the purpose of the FP-QI coil

A

counters the field produced by the ships longitudinal induced magnetization

61
Q

what is the purpose of the degaussing switchboard, and where is it located

A

contains operator controls, control circuits, and status indicators for all coils, it is functionally divided to facilitate operation and maintenenace

62
Q

what is the purpose of the degaussing remote panel

A

provides status indicators and a leading switch for emergency manual operation in a remote location

63
Q

what are the two types of fuel oil on board

A

JP5, MOGAS

64
Q

what is the purpose of the fuel oil service system

A

provides DFM from the fuel oil service tans to the boiler burners

65
Q

what is the purpose of the fuel oil transfer system

A

allows the transfer of fuel from different tanks to the fuel service tank

66
Q

what is the purpose of the JP5 service system

A

provides JP5 from the JP5 fuel tank to the flight deck for aircraft refueling and to the boilers for emergency use

67
Q

what is the purpose of the JP5 transfer system

A

allows transfer of JP5 from different storage tanks to the service tanks

68
Q

what is the purpose of the JP5 stripping system

A

allows the removal of sediment and water from the bottom of fuel tanks

69
Q

high pressure air psig

A

600-5000

70
Q

low pressure air psig

A

100-125

k (7 decks)

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