HH Hoses And Hydrants Flashcards
Red hose diameter?
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
Yellow hose usually supply’s water to pump.
Soft/hard suction hose
.
How often should an operational test of a hydrant take place?
Every 4 years.
Between April and September
Projet 2 flow rates and pressures?
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
Top number on hydrant sign?
Size of main it’s attached to in millimetres or inches.
Does the LFB pay for the water used when firefighting?
NO
Deciding breaching?
Supply’s two female outlets from one water supply.
Size of round thread in all British hydrants for stand pipe to be attached?
65mm
Ultimatic flow rate?
115-150 lpm
Minimum water flow rate and pressure from a hydrant?
2000 litres per min
1.7 bar
Requirements of a good hose?
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
2 tests on a hose are?
Visual inspection
Pressure test
4 diameters of layflat hose?
45mm
70mm
90mm
150mm
Storz couplings?
Used on 90mm/150mm yellow hose
90mm hose?
Yellow in colour
30 meters long
23.5kg
Max 15bar
4km of hose carried on appliance
Adding new length of hose or changing busy hose during firefighting must?
Minimise interruption
Garentee safety of branch operator
When should dirty hose be cleaned?
ASAP on return to station.
British hydrant standards?
65mm round thread
Open anti clockwise.
Supply at least 2000lpm
At least 1.7bar
Procedure involving removing hydrant cover, connecting standpipe and flushing hydrant is called?
Setting into the hydrant.
Akron mercury ground monitor?
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
Branch tally?
Tag on pump, then put on branch to ensure water is supplied to right branch
Rosenbauer projet 2?
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
2 types of female couplings?
Two pull release spring loaded plungers.
Single twist release spring loaded plunger.
Collecting breaching?
Combines two low pressure supplies, and converts to one.
Red hose usually delivers water to fire.
Delivery hose
.
Hose repair?
Rolled from male coupling
China graph pencil outlining defect
Tied on label, hose ID number, station number, details of defect
Rosenbauer RB101 branch?
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
How often should hose be rotated between appliance and reserve store?
Every 3 months.
Where is 90mm yellow layflat hose carried?
Hose laying appliances
Hydrant kit consists of?
Stand pipe
Hydrant key
Hydrant bar
2 types of leak detection devices in hydrants?
Magnetic and screw on.
Red dots must be inline on storz couplings before being pressurised.
.
Delta branch flow rates?
130
230
300
400
Hard suction hose?
Supply’s water to pump from open source. (Lake/river etc)
2.44 meter long
100mm diameter
2 on each appliance
Hose reel branch flow rates?
50
100
150
230 lpm
4 diameters of lay flat hose?
45mm
70mm
90mm
150mm
90mm hose adaptor kit?
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
Max pressure of 45mm/70mm/90mm hose?
15 bar
What allows a hydrant to drain after use, and prevents freezing and cracking in winter?
The drain boss bolt.
Bandit strap?
Colours strap around female coupling.
Identification.
Yellow-southern
Orange-east
Green-west
Black- training
Hose coupling?
End of hose, used to connect two lengths together
Cate of hose?
Ramped in roads
Not kinked under pressure
Not made up when frozen
Under run and cleaned before stowing
Who is responsible for making sure there is an adequate supply of water?
LFEPA
LFB
Bottom number on hydrant sign?
Distance to hydrant in feet or metres.
Jet reaction?
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
When should hose be tested?
Upon acceptance
After use
Annually at workshops
Full PPE must be worn when handling hose.
.
Which way does a hydrant open?
Anti-clockwise
Rosenbauer projet 2 flow rate?
630-930lpm
45mm hose weight?
9kg
Where does water in hydrants come from?
Mains water supply.
Delta branch flow rates and pressures?
3-6 bar
130
230
300 2man
400 2 man litres per min
Also flush setting
Size of internal bores on 45/70 mm red hose?
65mm regardless of hose diameter
Main branch used by LFB?
Delta branch
Hose reel length?
18 meteres
4 lengths each side
22mm inner diameter
How to test hose?
4 man job.
Pressure to 15 bar, 1 min
Walk the hose, 300mm
Ultimatic hose reel branch?
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
Defective hose should be rolled up, (not Dutch rolled) from male coupling.
.
150mm hose?
Yellow in colour
Carried on high volume pump
50meters 10 meters or 5 meters long
Akron ground minutes pressures and flow rates?
3.5-7 bar
950/1400/1900 lpm
70mm layflat hose weight?
15kg
Ground monitor?
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
150mm hose lengths?
5
10
50
Meters
How is mains water pressurised?
By gravity initially, then by pumping station.
Main layflat hoses carried on pumps and pump ladders?
45mm and 70mm
Hose reel hose?
Used to deliver water at high pressure.
Stored on side of appliance
Internal diameter of 19mm
18.4 meter long
Instantaneous hose couplings?
Used on 45mm/70mm red hose
How often should a visual inspection of a hydrant take place?
Yearly
Type of British standard hydrant? What’s it called?
Screw down hydrant
Lip on male instantaneous coupling?
Annular lip
Supplied from the appliance tank how much water can the pump deliver?
2700lpm
What does the flow meter mesure?
Flow of water going into water tank
What are the flow rates and optimal pressure for the akram ground monitor?
7 bar of pressure at branch.
950
1400
1900 lpm
When would a akram ground monitor be used?
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.
Flow rate for akram ground monitor when using foam?
950 lpm
What flow rate on the akram ground monitor when the deluge nozzle is used?
1750lpm
What is the degree of movement a akram ground monitor has?
How many degrees?
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.
