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CAA Module 11 > Module 11.17 Water and waste > Flashcards

Module 11.17 Water and waste Flashcards

1
Q

Where is potable water supplied to?

A
  • Lavatory
  • Sinks
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2
Q

Where does waste water go once drained from lavatory and galley sinks?

A

Disposed overboard via drain mast

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3
Q

Where is toilet waste emptied into?

A

Toilet waste tank

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4
Q

Where is potable water stored?

A

Below the cabin floor in tanks

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5
Q

How is water transported from tanks to the lav/galley areas?

A

By pressurisation of the potable water tanks

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6
Q

What is used to pressurise potable water tanks?

A

Pneumatics

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7
Q

What is the purpose of the air filters?

A

To prevent water contamination

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8
Q

What do check valves prevent?

A

Backwards flow of air and water

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9
Q

When would the air compressor be used to pressurise the potable water tank?

A

When the pneumatic bleed air is unavailable

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10
Q

How is the air compressor activated?

A

Via pressure switch in between the pressure relief valve and the two check valves

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11
Q

Where is the pressure relief valve located?

A

Between the tank and the pressure switch

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12
Q

When refilling a potable water tank, what are they filled until?

A

Until water comes out of the overflow valve

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13
Q

What is the water filled from?

A

Water servicing panel

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14
Q

What valve allows filling of the potable water system?

A

Fill/overflow valve

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15
Q

What type of valve is the fill/overflow valve?

A

4-way rotary core valve

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16
Q

Where is the water tank quantity show?

A

On the water servicing panel and the cabin attendants panel

17
Q

Where is the water heater, mixer valve and header located?

A

Under the sink in the lavatory

18
Q

What are some safety features of the water heater?

A
  • On/Off switch
  • Indicating light
  • Pressure relief valve
  • Overheat switch
  • Possibly temp select switch
19
Q

Where is the toilet waste stored in a flushable toilet?

A

In a tank beneath the toilet

20
Q

What are the two types of toilets used on board an aircraft?

A
  • Flushable
  • Vacuum
21
Q

What is a flush motor toilet flushed with?

A

Flushing agent from the waste tank the is passed through filters before being pumped

22
Q

What prevents splash back and vision of the tank contents?

A

The separator

23
Q

What is a vacuum toilet flushed with?

A

Potable water

24
Q

Where do the vacuum toilets drain to?

A

Waste holding tanks

25
Q

What produces the vacuum at low differential pressure in order to be able to flush the toilet?

A

Vacuum generator, this is when the aircraft is at low alt or on ground

26
Q

What are the toilet waste tanks vented to?

A

The outside

CAA Module 11 (22 decks)

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