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Pumps & pumping > Pumps & pumping > Flashcards

Pumps & pumping Flashcards

Any mistakes or suggestions on improvements please contact Phil Simpson

1
Q

Pumps & Pumping

How long will your tanks supply last using the Rosenbauer project II if the tank is not augmented?

A

2 mins

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2
Q

Pumps & Pumping

Why is it important that the air is dumped before using the pump?

A

It tilts the tank towards the pump improving pump effiency

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3
Q

Pumps & Pumping

When should the compound gauge be monitored?

A

During all pumping operations

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4
Q

Pumps & Pumping

How long will your tanks supply last using the Rosenbauer SelectFlow RB101 if the tank is not augmented?

A

3 minutes

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5
Q

Pumps & Pumping

When three lights are illuminated on a Series II Mercedes water tank contents indicator, the auto fill valve is….?

A

Fully open

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6
Q

Pumps & Pumping

What is the maximum distance between pumps when using 90mm hose on level ground?

A

90mm hose - 15 lengths

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7
Q

Pumps & Pumping

When working from a hydrant, what actions should be taken when the autofill valve is set to open, the flow meter has a zero reading & the hosereel tank is half full?

A

Open the emrgency bypass valve which is located in the o/s rear locker

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8
Q

Pumps & Pumping

What is the pressure loss rate for all hose due to gravity?

A

0.1 bar per metre

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9
Q

Pumps & Pumping

What would be the FIRST sign of an appliance autofill valve failing in the closed position?

A

The tank contents would fall below three quarters and the flow gauge would continue to register zero

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10
Q

Pumps & Pumping

Once the pump bypass lever has been engage how much water will be supplied direct to the tank?

A

1000 litres per minute

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11
Q

Pumps & Pumping

You are connected to an Aerial (ALP/TL) or dry riser, what is the maximum pressure you would charge them to?

A

10 bar

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12
Q

Pumps & Pumping

What is an appliance pump’s default pumping pressure setting?

A

High pressure

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13
Q

Pumps & Pumping

How many Litres/min will be delivered through the hosereel @ 35 bar?

A

100

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14
Q

Pumps & Pumping

Why should the pump operator switch to low pressure mode as soon as hose reel jets are not required?

A

The maximum available low pressure flow rate may be impaired if high pressure mode remains selected when it is not required

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15
Q

Pumps & Pumping

When four lights are illuminated on a Series II Mercedes water tank contents indicator, how many litres of water are in the appliance tank?

A

Approximately 1350 litres

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16
Q

Pumps & Pumping

What are the frictional loss rates for 70mm delivery hose?

A

0.2 Bar per length @ 500 l/min

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17
Q

Pumps & Pumping

A full tank of fuel will allow an appliance to pump for approximately how long?

A

4 hours

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18
Q

Pumps & Pumping

What size hose is used for water relaying by pumping appliances?

A

90mm hose and 70mm hose

19
Q

Pumps & Pumping

With one hose reel jet in use approximately how long will a full tank of water last?

A

Approx 15 minutes

20
Q

Pumps & Pumping

What should the pump operator do if the autofill valve fails in the fully closed position?

A

Pull the bypass lever in the offside rear locker to divert water directly to the tank

21
Q

Pumps & Pumping

How far from the hydrant should the initial pump be?

A

As close as possible to receive maximum flow from hydrant, and no more than 3 lengths and always twinned. Every additional length reduces flow to pump.

22
Q

Pumps & Pumping

What pressure range does the Rosenbauer SelectFlow RB101 operate?

A

3 to 6 bar

23
Q

Pumps & Pumping

What is the optimum pressure /flow rate for the Rosenbauer Project II branch set to solid core jet?

A

7 Bar & 630 l/min

24
Q

Pumps & Pumping

What does the high pressure gauge indicate?

A

Water pressure being delivered to the hose reel jets

25
Q

Pumps & Pumping

A sudden decrease in pressure at the low pressure gauge could indicate what?

A

A burst delivery hose length

26
Q

Pumps & Pumping

What is the maximum working pressure of delivery hose?

A

15 Bar

27
Q

Pumps & Pumping

When three lights are illuminated on a Series II Mercedes water tank contents indicator, how many litres of water are in the appliance tank?

A

Approximately 1000 litres

28
Q

Pumps & Pumping

How do we connect 90mm to a pumping appliances?

A

90mm Storz hose tail adaptors

29
Q

Pumps & Pumping

What is the maximum distance between pumps when using 70mm hose on level ground?

A

8 lengths

30
Q

Pumps & Pumping

A sudden increase in pressure on the low pressure gauge could indicate what?

A

A branch being closed

31
Q

Pumps & Pumping

When should the compound gauge be monitored?

A

During all pumping operations

32
Q

Pumps & Pumping

How can a hydrants flow rate be assessed?

A

Drop tank level until 2 lights are illuminated and turn on auto fill valve digital display

33
Q

Pumps & Pumping

What is the main fire brigade pump used on appliances and lightweight portable pumps?

A

A centrifugal pump

34
Q

Pumps & Pumping

What pressure range does the Rosenbauer Project II operate?

A

3.5 to 7 bar

35
Q

Pumps & Pumping

What should the pump operator do when the reversing alarm sounds?

A

Check the cab

36
Q

Pumps & Pumping

When lifting from open water what is the maximum theoretical and maximum practical lift possible?

A

Max theoretical: 10 metres

Max practical: 8 metres

37
Q

Pumps & Pumping

How many lengths of twinned 90 mm hose can pumps be apart in a water relay on an uphill gradient ground?

A

12

38
Q

Pumps & Pumping

What is the optimum pressure /flow rate for the Rosenbauer SelectFlow RB101 branch set to solid core jet?

A

6 Bar & 400 l/min

39
Q

Pumps & Pumping

You are the pump operator of an appliance connected to a hydrant by twin 70mm hose and supplying a single 45mm jet. Your appliance tank is full, how could you tell if the Autofill valve has failed in the closed position?

A

Flow meter reads zero, water tank contents lights start to flash and then go out, hydrant hose is rock hard.

40
Q

Pumps & Pumping

What are the frictional loss rates in 45mm delivery hose?

A

1 bar per length

41
Q

Pumps & Pumping

What will cause the pump bay switches to return to their default setting?

A

Appliance being placed in drive or the PTO being disengaged

42
Q

Pumps & Pumping

Why does delivery No1 have a lesser performance than the others?

A

There is a bend in the pipe making No1 less efficient

43
Q

Pumps & Pumping

What does the compound gauge indicate?

A

The pressure of the water supply coming into the pump, with a vacuum reading (negative pressure) when lifting from open water and a pressure reading (positive pressure) when the supply is augmented from a hydrant.

44
Q

Pumps & Pumping

What should the pump operator do when the thermal relief valve operates?

A

Open an outlet slightly

Pumps & pumping (5 decks)

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