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Week 1 > Week 3 > Flashcards

Week 3 Flashcards

1
Q

What’s the function of HP bilge?

A
  • Discharge overboard
  • Pump water overboard from flooded compartments
  • Provide back up for HP ballast pump
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2
Q

What is the function of the MP ballast system?

A
  • Adjust subs buoyancy using M comp tanks
  • Use MP pump as trim pump
  • Supplies sea water for firefighting
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3
Q

Function of valves

A
  • Allow opening and shutting of fluid pathway

- Hydraulic accumulator facility

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4
Q

Uses of trim system

A

Adjust pitch and heel of submarine

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5
Q

Who is the Hover system operater from normally?

A

Ship Control Console Operator

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6
Q

What tanks are associated with the Hover system?

A
  • Pressurised Water Tank

- M compensating tanks

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7
Q

What pumps are used during Hover operation?

A

MP ballast pumps

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8
Q

When do we use the Hover system?

A
  • Chalfont

- Slow speed depth control

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9
Q

What is the normal operation of the Priming System?

A

Auto Remote

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10
Q

At Sea who operates the ballast system?

A

SCCO which is a suitably qualified senior rate

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11
Q

In harbour who operates the ballast system

A

Cn be a Junior Rate or duty FWD technical rating

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12
Q

Who operates the LP bilge system?

A
  • Electrical Panel Operator
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13
Q

Who operates the HP bilge system?

A

SCCO

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14
Q

Where can the submarines Ballast be operated from?

A
  • SCC (via PMS)
  • SCC (via reversionary panel)
  • Locally
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15
Q

At sea who is the Trim system operated by?

A

SCCO who will be SNR ME or WE rating

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16
Q

In harbour who operates the Trim system?

A
  • Duty senior rate or junior rating
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17
Q

Where can the trim system be operated from?

A

At the SCC VIA PMS

Or locally

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18
Q

Who is the bilge and ballast system operated by?

A

SCCO using PMS

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19
Q

What is the system code for the priming system?

A

PS

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20
Q

What makes up the Bilge/Ballast priming system?

A
  • Vacuum tank
  • Pump
  • Sealing water tank
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21
Q

What are the key components of the Ballast system?

A
  • Compensating tanks
  • HP Ballast pumps
  • MP Ballast pumps
  • Ballast Hull valves
  • Hydraulic control valves
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22
Q

What are the uses of trim?

A
  • Adjust pitch and heel
  • Alternative means of cooling
  • Sea water supply for domestic use
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23
Q

What is the system codes for HP and LP bilge systems?

A

BS

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24
Q

What is the system code for trim and ballast systems?

A

WS

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25
Q

What is the function of the astute LP Bilge system?

A
  • It collects water from the bilge areas maintaining clean and dry conditions, it also collects waste water from tanks serviced by systems
  • Remove oil from dirty bilge water ready to discharge overboard
  • Discharge ashore contents of the Clean Bilge Tank, Dirty bilge tank, Contaminated oil tank, Non active drain tank and the precipitator drain tank.
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26
Q

What are the methods of trim operation

A

Locally and remotley

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27
Q

What does priming prevent

A

Damage to the pumps

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28
Q

What tanks are associated with the trim system?

A
  • TOT (torpedo overflow tank)
  • FWD and AFT trim tanks
  • Water retention tanks
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29
Q

Function of the ballast system

A
  • Adjust bodily weight
  • Used for firefighting
  • Rapid deballasting
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30
Q

What are the 2 speeds of the MP ballast

A

Fast- Balssating

Slow- Trimming

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31
Q

Function of Hover

A

Slow speed depth keeping

Chalfont

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32
Q

What are the main international conventions on marpol

A

Marpol 73/28

33
Q

What tanks are in the bilge system?

A
  • Clean bilge
  • Dirty bilge
  • Oil
  • Non active drain
  • Precipitator drain
34
Q

What does the trim pump do and how is it operated?

A
  • Moves sea water from one tank to another dependant on required trim.
  • Operated both locally and remotely
35
Q

What are the hazards associated with these system?

A
  • Flooding
  • Contamination
  • Internal leaks
36
Q

What is the function of the HP ballast system?

A
  • Adjust subs buoyancy using O comp tanks
  • Back up HP bilge system
  • Pump water overboard from flooded compartments
37
Q

What’s the function of LP bilge?

A
  • Collect water from bilge to maintain clean and dry conditions
  • Remove oil from dirty water
  • Discharge ashore
38
Q

What can the HP ballast system do in case of emergency?

A

Rapid deballasting

39
Q

What are the major gases used on board submarines?

A

Air and Nitrogen

40
Q

Where is nitrogen gained from?

A

Shoreside facilities

41
Q

What is the function of nitrogen bottle groups?

A

To Provide a stored Reservoir of nitrogen for:

  • Vogs
  • Firefighting
  • Hydraulic accumulators
  • SG blanketing and sparing
42
Q

What is the function of nitrogen reducing stations?

A

Reduce the pressure of stored nitrogen for lower pressure ship services:

  • fire fighting
  • SG blanketing
43
Q

What is the function of HP air system?

A

Compress, store and distribute clean dry air at 276 bar

44
Q

Where does HP air supply?

A
  • AV&B
  • Diver quality air for chalfont
  • Air for reactor services
  • Charging EDBA
45
Q

How many main bottle groups make up the HP air system?

A

4 groups split 56 bottles

46
Q

What is the purpose of a group isolating valve?

A
  • Isolate 4 bottle groups from the ring main

- Operated local and remote

47
Q

What is the purpose of integrity valves?

A
  • Ensures even during loss of one side of the system HP air will still be supplied
  • Normally Open
48
Q

What is the purpose of bulkhead isolation valves?

A
  • Allow for isolation of certain sections of the HP air system whilst supplies continue elsewhere
  • Normally open
49
Q

What is the purpose of cross connection valves?

A
  • Allow both port and starboard ringmains to be connected

- Normally shut

50
Q

What is the purpose of captains valves?

A
  • These connect the emergency bottle group to HP air ringmain
  • Co must give permission to operate
51
Q

What is the function of the emergency blows system?

A
  • Assist HP blow for emergency at other depths than periscope
52
Q

What’s the function of the HP blow system?

A
  • Blow the main ballast wuth air at periscope depth
53
Q

Name some of the functions of the LP blow system

A
  • Achieving full buoyancy
  • Assist in surfacing from periscope depth
  • Ventilation and purging
  • Alter submarines atmosphere
  • Reduce submarines pressure prior to opening hatches
54
Q

What are the key operating parameters on board?

A
  • Bottle groups at 276 bar
  • Control air at 28 bar
  • 24V for remote operation and indication on SCC
55
Q

Who’s permission is needed to operate LP blow when alongside?

A

Manoeuvring room watchkeeper

56
Q

What is the system code of nitrogen?

A

N

57
Q

What are the functions of the nitrogen distribution system?

A
  • Water mist fire fighting system
  • SG blanketing and sparging
  • Hydraulic power plant accumulators
  • VOGS
58
Q

When is HPA used to charge VOGS

A

Only in emergency when nitrogen isn’t available

59
Q

If a gas burst occurs FWD of 64 Bulkhead what do we treat it as?

A

HP air burst

60
Q

If a gas burst occurs aft of 64 bulkhead what do we treat it as?

A

HP gas burst

61
Q

What is the system pressure of the AV&B

A

28 bar

62
Q

How is AV&B sourced?

A

HP air system via main composite reducing stations

63
Q

What is the system code of the AV&B system?

A

AV

64
Q

Where are the main 4 composite reducing stations relating the AV&B?

A
  • ships office
  • 1 deck stbd side
  • Manouvering room
  • Thrust block stbd
65
Q

Who operates AV&B

A

SQEP

66
Q

Why is hydraulics used on board?

A
  • Relatively quiet
  • Compact
  • Easy to extend through hull
  • Simple and reliable
67
Q

Hydel local control valves modes of control are what?

A
  • Single acting

- Double acting

68
Q

Name some of the uses of hydraulics on board

A
  • Move control surfaces
  • Operate tunnel doors
  • Operate masts and shutters
  • Hull valve operation
  • Toredo system ie bow caps and flap valves
69
Q

What is a proportional control valve?

A

Is used to control surface movement

70
Q

What is OX30

A
  • Red in colouring
  • incompressible
  • Prevents corrosion
  • Self lubricating
  • Emulsifiers upon water contamination
71
Q

What are the 3 main pipework sets in a hydraulic system?

A
  • Supply
  • Return
  • Replenishment
72
Q

What are the hazards of hydraulics?

A
  • Misting from the burst
  • Ignition due to flammable nature
  • Slippage
73
Q

What can hydraulic hazards cause?

A
  • Dermatitus
  • Hydopermic injection
  • Problems from inhilation
74
Q

Hydraulic systems have moving machinary attached list some which could cause injury

A
  • Valves
  • Masts
  • Hydraulic rams
  • Bulkhead doors
75
Q

Name the 4 hydraulic plants on board

A
  • Main hydraulic plant
  • Standby main hydraulic plant
  • External hydraulic plant
  • Steering and hydroplane hydraulic plant
76
Q

Where are all hydraulic plants originally operated from?

A
  • in the manoeuvring room at the Electronic Wing Panel (EWP)
77
Q

Name the 3 hydraulic systems on board

A
  • Main hydraulic system
  • External hydraulic system
  • Steering and hydroplane
78
Q

Where can hydraulic systems be operated from?

A
  • EWP
  • SCC viapms
  • Local control panels

Week 1 (14 decks)

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