Theory 4(Chapter 2)(RN)

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  • Created by: Moles12!
  • Created on: 09-06-21 08:21
List five uses of ventilation.
Cooling of electronic equipment
CBRN
Habitability
Main machinery space cooling
Galley ventilation
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List 4 configurations of ventilation.
Fan supply and Fan exhaust
Fan supply and natural exhaust
natural supply and fan exhaust
natural supply and natural exhaust
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Why do we use a fan supply with fan exhaust configuration and give 3 examples of where it is fitted.
It is used to remove large quantities of heat, moisture and Noxious fumes and provides fresh air to personnel in that compartment.
Fitted in the galley, machinery spaces, laundries, WC's and bathrooms.
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Why do we use a fan supply with natural exhaust configuration and give 2 examples of where it is fitted.
It is used where supplying fresh air to compartments is the primary objective.
Fitted in workshops and store rooms.
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Why do we use a natural supply with a fan exhaust configuration and give 3 examples of where it is fitted.
It is fitted where the removal of noxious gases and flammable vapours is the primary objective.
Fitted in inflam stores, paint stores and spirit rooms.
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Where would we use a natural supply with a natural exhaust configuration ?
It is used in minor unoccupied compartments and lobbies.
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List 6 examples of filters used within ventilation and what they are used on.
>Panel filter-Air conditioning
>Supply filters-ATU's
>Grease filters-Galleys
>Lint filters-Laundries
>Dust filters-Sonar/Sickbay
>Flameproof gauzes- Inflam stores/hangars/paint shops/magazines/vehicle decks
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Where would the ventilation system 3B12 be found ?
It would be found on the 3RD deck in Water tight section Bravo on the port side(Even number).
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What are the three section in an AFU, what are they made of and what do they remove ?
Pre-particulate filter-Paper- Removes large coarse particles.
Particulate filter-Glass fibres-Removes bacteria by entrapment.
Gas filter-Active charcoal filling-Removes all known chemical warfare agents.
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List the 5 occasions citadel tests are to be carried out.
1.Annually
2.Prior to DED(Docking Extended Duration)
3.During harbour acceptance trials(HATS)
4.During sea acceptance trials(SATS)
5.During FOST work-up
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What are the steps to a citadel test ?
1.Close all openings on the citadel boundary and set system to re-circ. 2.Open AFU inlets and start AFU's 3.Restrict access to and from citadel to essential personnel only(AIRLOCKS MUST BE USED) 4.Search for leaks and carry out temporary repairs(Pressure
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What pressure is the valve plate set to lift at ?
1/2 WG
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What is the crash stop facility used for ?
In a case of a fire or crash on deck the crash stop facility can be operated to turn of the fans, upon restarting the intakes should be checked clear of smoke and debris.
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Other cards in this set

Card 2

Front

List 4 configurations of ventilation.

Back

Fan supply and Fan exhaust
Fan supply and natural exhaust
natural supply and fan exhaust
natural supply and natural exhaust

Card 3

Front

Why do we use a fan supply with fan exhaust configuration and give 3 examples of where it is fitted.

Back

Preview of the front of card 3

Card 4

Front

Why do we use a fan supply with natural exhaust configuration and give 2 examples of where it is fitted.

Back

Preview of the front of card 4

Card 5

Front

Why do we use a natural supply with a fan exhaust configuration and give 3 examples of where it is fitted.

Back

Preview of the front of card 5
View more cards

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