Water Shuttle And Water Relay Flashcards

1
Q

What are the types of water relay?

A

Closed circuit

Open circuit

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2
Q

What is closed circuit water relay?

A

When water is pumped from one pump to the inlet of the next pump.
This is used with light portable pumps

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3
Q

What is an open circuit water relay?

A

Where water is pumped through hose to portable dame, reservoirs or the appliance pump BEFORE entering the inlet of the next pump in a relay.

This is used with appliance pumps

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4
Q

What does the distance between pumps (water relay) depend on?

A

The flow required.

The size(diameter) of hose.

Contours of the relay route.

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5
Q

When relaying water in an open circuit, what are the maximum lengths of hose on flat ground and a 10% gradient?

A

10 lengths flat

8 lengths gradient

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6
Q

When relaying water using hose layer hose (90mm) what are the maximum lengths of hose on flat ground and a 10% gradient?

A

15 lengths flat ground

12 lengths 10% gradient

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7
Q

When charging water in an open circuit water relay, how many lights should the pump operators maintain on the water level indicator?

A

3 lights. This ensures that the autofill valve is open at all times.

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8
Q

How much water is a LPP capable of supplying a closed circuit water relay?

A

1000 litres per minute at 4 bar pressure.

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9
Q

No LPP should be run without water for more than…………

A

30 seconds.

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