Hose, Hydrants and Branches Flashcards
When do you swap hose with station reserve?
Every 3 months
What types of hose are there?
Flat lay hose
hose reel hose
hard suction hose
What sizes of flat lay hose are there?
45mm
70mm
90mm
150mm
What are the lengths & weights of the 45mm & 70mm hose?
45mm - 23m/9kg
70mm - 23m/15kg
What is the length and weight of 90mm hose? And what max pressure?
30m/23.5kg & Max 15 bar
What is the size/length and number of lengths of the hose reel hose on the appliance?
22mm/18m x 1/ 4 lengths each side
What are the lengths of the 150mm hose?
5m, 10m and 50m
What are the features of the delta attack 400 S Pro branch?
Flow rate 130/230/300/400 LPM
Pressure 3/6 bar
What are the features of the project 2?
At 7 bar: solid core jet is 630 lpm
Combined 930 lpm jet and spray
The spray operating independently will provide 410 lpm
At 3.5 bar pressure at the branch the flow rate for the solid core is 440 LPM
The spray operating independently will provide
290 LPM
Both solid core and spray combined will provide 640 LPM
What are the features of the Akron ground monitor?
3.5-7 bar
950/1400/1900
Deluge (cone) - 1750
Foam - 950
What are the features of the hose reel branch?
50/100/150/230/ Flush LPM
What are the British standards for hydrants?
Must have 65mm thread
Minimum 2000lpm at 1.7 bar
Must turn anti clockwise
Where do we source water?
Rain, reservoir, treatment plants, pump plants, mains (trunk and service), hydrant
How do you test a hose?
Have branch open 15 bar for 1 minute, take it down to 7 bar and walk the hose and check every 300mm
What do you do to hydrant before connecting?
Setting/shipping the hydrant and flushing it to check it’s operational
What types of leak devices are there?
Screw on
Magnetic
What do the numbers on the hydrant plates show?
Top number - diameter of hydrant
Bottom number - distance from hydrant
What is the name of the hydrant used operationally?
Screw down hydrant
What is the purpose of the 90mm adapter kit?
To go from a storz coupling to an instantaneous coupling
Minimum pressure on delta branch?
3 bar
Why do we change to low pressure when the hose reel if turned off?
- Reduce emissions
- Reduce fuel consumption
- Reduce noise
- Prevent overheating
What is the purpose of the appliance inventories?
- Make sure all equipment is there and accounted for
- Check condition and operational readiness, clean and replenished
- Check everything is stowed away correctly
The steps to an operational risk assessment?
- Evaluate task situation
- Task the person
- Select safe systems of work
- Assess safe systems of work
- Introduce control measures
- Re-assess control measures and safe systems work
How do you control jet reaction?
- Adopt stance on stable and even ground
- Support - at least 2 firefighters
- Ensure hose runs straight out behind - 3m
- Open slowly and fully, starting on low pressure and building slowly
What are the key elements of the Akron Ground monitor?
- Optimal working pressure of 7 bar
- Deluge 1750 (jet)
- Variable flow 950, 1400, 1900 (jet&spray)
- can turn 20 degree either side
- can turn 30-60 degrees up and down, can also reach 20 degrees with hand and pressure on top
- used when needed for long periods
- used unattended
The Rosenbauer project2 has an effective throw at 3.5 bar of?
57Meters
The Rosenbauer Projet 2 has an effective working pressure range of?
3.5 - 7 bar
