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Fire Brigade training > HH Hoses And Hydrants > Flashcards

HH Hoses And Hydrants Flashcards

1
Q

Red hose diameter?

A

45 and 70mm

23 meters long

9kg and 15kg

Max pressure of 15 Bari

4 lengths of 45mm and 10 lengths of 70mm carried in appliance

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2
Q

Yellow hose usually supply’s water to pump.

Soft/hard suction hose

A

.

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3
Q

How often should an operational test of a hydrant take place?

A

Every 4 years.

Between April and September

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4
Q

Projet 2 flow rates and pressures?

A

7 bar

630 jet
300 spray

930 jet and spray

3.5 bar
440 as jet
640 as jet and spray
200 as spray

57m throw

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5
Q

Top number on hydrant sign?

A

Size of main it’s attached to in millimetres or inches.

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6
Q

Does the LFB pay for the water used when firefighting?

A

NO

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7
Q

Deciding breaching?

A

Supply’s two female outlets from one water supply.

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8
Q

Size of round thread in all British hydrants for stand pipe to be attached?

A

65mm

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9
Q

Ultimatic flow rate?

A

115-150 lpm

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10
Q

Minimum water flow rate and pressure from a hydrant?

A

2000 litres per min

1.7 bar

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11
Q

Requirements of a good hose?

A

Reliable in use

Redid it and to bursting or damage through use

Not stretch excessively

Light and easy to handle, and easy to make up

Durable

Smooth surfaced

Capable to changing pressure and shock

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12
Q

2 tests on a hose are?

A

Visual inspection

Pressure test

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13
Q

4 diameters of layflat hose?

A

45mm
70mm
90mm
150mm

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14
Q

Storz couplings?

A

Used on 90mm/150mm yellow hose

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15
Q

90mm hose?

A

Yellow in colour

30 meters long

23.5kg

Max 15bar

4km of hose carried on appliance

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16
Q

Adding new length of hose or changing busy hose during firefighting must?

A

Minimise interruption

Garentee safety of branch operator

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17
Q

When should dirty hose be cleaned?

A

ASAP on return to station.

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18
Q

British hydrant standards?

A

65mm round thread

Open anti clockwise.

Supply at least 2000lpm

At least 1.7bar

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19
Q

Procedure involving removing hydrant cover, connecting standpipe and flushing hydrant is called?

A

Setting into the hydrant.

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20
Q

Akron mercury ground monitor?

A

Can deliver water or foam

Flow rate 950 - 1900 lpm

Only used under instruction from incident commander

Supplied by 70mm hose

7 bars of pressure at branch

Hose laid straight behind where possible

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21
Q

Branch tally?

A

Tag on pump, then put on branch to ensure water is supplied to right branch

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22
Q

Rosenbauer projet 2?

A

Larger then RB101

Works between 3.5 and 7 bar

57m throw

Can produce jet and spray at same time

Always 2 firefighters when using

630lpm when using jet to 930lpm for jet and spray

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23
Q

2 types of female couplings?

A

Two pull release spring loaded plungers.

Single twist release spring loaded plunger.

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24
Q

Collecting breaching?

A

Combines two low pressure supplies, and converts to one.

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25
Q

Red hose usually delivers water to fire.

Delivery hose

A

.

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26
Q

Hose repair?

A

Rolled from male coupling

China graph pencil outlining defect

Tied on label, hose ID number, station number, details of defect

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27
Q

Rosenbauer RB101 branch?

A

Multiple flow rate

65mm male coupling

Working pressure at 6 bar, can still work at 3 bar

Multi pattern (jet and spray)

130 - 400 lpm

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28
Q

How often should hose be rotated between appliance and reserve store?

A

Every 3 months.

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29
Q

Where is 90mm yellow layflat hose carried?

A

Hose laying appliances

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30
Q

Hydrant kit consists of?

A

Stand pipe

Hydrant key

Hydrant bar

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31
Q

2 types of leak detection devices in hydrants?

A

Magnetic and screw on.

32
Q

Red dots must be inline on storz couplings before being pressurised.

A

.

33
Q

Delta branch flow rates?

A

130
230
300
400

34
Q

Hard suction hose?

A

Supply’s water to pump from open source. (Lake/river etc)

2.44 meter long

100mm diameter

2 on each appliance

35
Q

Hose reel branch flow rates?

A

50
100
150
230 lpm

36
Q

4 diameters of lay flat hose?

A

45mm

70mm

90mm

150mm

37
Q

90mm hose adaptor kit?

A

Used to connect storz coupling on 90mm hose layer hose (yellow) to instantaneous coupling on 45/70mm (red) hose I

2 meter long, yellow hose

Storz coupling one end, instantaneous other end

Carried in red NATO box

2 carried on pumping appliances

38
Q

Max pressure of 45mm/70mm/90mm hose?

A

15 bar

39
Q

What allows a hydrant to drain after use, and prevents freezing and cracking in winter?

A

The drain boss bolt.

40
Q

Bandit strap?

A

Colours strap around female coupling.

Identification.

Yellow-southern
Orange-east
Green-west
Black- training

41
Q

Hose coupling?

A

End of hose, used to connect two lengths together

42
Q

Cate of hose?

A

Ramped in roads

Not kinked under pressure

Not made up when frozen

Under run and cleaned before stowing

43
Q

Who is responsible for making sure there is an adequate supply of water?

A

LFEPA

LFB

44
Q

Bottom number on hydrant sign?

A

Distance to hydrant in feet or metres.

45
Q

Jet reaction?

A

Pushing back from branch when water is turned on.

Can be reduced by safe and stable position

Start with pressure and flow rate that can be controlled

2 firefighters

Open and close branch slowly

Hose in straight line behind branch

46
Q

When should hose be tested?

A

Upon acceptance

After use

Annually at workshops

47
Q

Full PPE must be worn when handling hose.

A

.

48
Q

Which way does a hydrant open?

A

Anti-clockwise

49
Q

Rosenbauer projet 2 flow rate?

A

630-930lpm

50
Q

45mm hose weight?

A

9kg

51
Q

Where does water in hydrants come from?

A

Mains water supply.

52
Q

Delta branch flow rates and pressures?

A

3-6 bar

130
230
300 2man
400 2 man litres per min

Also flush setting

53
Q

Size of internal bores on 45/70 mm red hose?

A

65mm regardless of hose diameter

54
Q

Main branch used by LFB?

A

Delta branch

55
Q

Hose reel length?

A

18 meteres

4 lengths each side

22mm inner diameter

56
Q

How to test hose?

A

4 man job.

Pressure to 15 bar, 1 min

Walk the hose, 300mm

57
Q

Ultimatic hose reel branch?

A

Used on high pressure hose reel on side of appliances.

Permanently attached to hose reels

Can be connected to 65mm hose coupling with adaptor

Different spray patterns

Flow rate 115 - 150 lpm

58
Q

Defective hose should be rolled up, (not Dutch rolled) from male coupling.

A

.

59
Q

150mm hose?

A

Yellow in colour

Carried on high volume pump

50meters 10 meters or 5 meters long

60
Q

Akron ground minutes pressures and flow rates?

A

3.5-7 bar

950/1400/1900 lpm

61
Q

70mm layflat hose weight?

A

15kg

62
Q

Ground monitor?

A

Type of Branch designed to operate at ground level unattended when:

Large amounts of water of foam.

Application for long time periods

Appliance from a distance

63
Q

150mm hose lengths?

A

5
10
50

Meters

64
Q

How is mains water pressurised?

A

By gravity initially, then by pumping station.

65
Q

Main layflat hoses carried on pumps and pump ladders?

A

45mm and 70mm

66
Q

Hose reel hose?

A

Used to deliver water at high pressure.

Stored on side of appliance

Internal diameter of 19mm

18.4 meter long

67
Q

Instantaneous hose couplings?

A

Used on 45mm/70mm red hose

68
Q

How often should a visual inspection of a hydrant take place?

A

Yearly

69
Q

Type of British standard hydrant? What’s it called?

A

Screw down hydrant

70
Q

Lip on male instantaneous coupling?

A

Annular lip

71
Q

Supplied from the appliance tank how much water can the pump deliver?

A

2700lpm

72
Q

What does the flow meter mesure?

A

Flow of water going into water tank

73
Q

What are the flow rates and optimal pressure for the akram ground monitor?

A

7 bar of pressure at branch.

950
1400
1900 lpm

74
Q

When would a akram ground monitor be used?

A

When a larger flow rate than a hand held branch is required.

When a greater throw is required to fight fire from a greater distance.

When extinguishing media needs to be applied for a longer period of time.

75
Q

Flow rate for akram ground monitor when using foam?

A

950 lpm

76
Q

What flow rate on the akram ground monitor when the deluge nozzle is used?

A

1750lpm

77
Q

What is the degree of movement a akram ground monitor has?

How many degrees?

A

30-60 degrees up and down.
(Can be moves an extra 29degrees if fire fighter pushed down, and stays, to prevent jet reaction.)

20 degrees either side from center.

Fire Brigade training (13 decks)

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