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49 Cards in this Set
- Front
- Back
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What is the route of water delivery? |
Resevoirs Treatment plants Pumping stations Trunk mains Service mains |
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What is the British Standard for hydrants? |
65mm round threaded outlet Must be able to deliver 2000 Litres Per Minute at a minimum of 1.7 bar Anti-clockwise opening |
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What information do Hydrant Plates show? |
Single or double hydrant Size of the water main in inches or millimeters on the top Distance to the hydrant in feet or meters on the bottom Some plates show the direction of the hydrant |
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What're the 3 parts of Hydrant Gear? |
Double headed standpipe Hydrant key Hydrant bar |
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2 types of leak detection devices: |
Magnetic Screw on |
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When are hydrants inspected/tested? |
Visual inspection once a year Tested every 4 years between April and September |
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What're the requirements of a good hose? |
Reliable in use Resistant to bursting, leaking, chemical damage and kinking Should not stretch excessivley when pressurised (no more than 5% in length and 10% in diameter) Light and easy to handle. Able to be made up wet or dry Durable. High abrasion resistance and easy to repair Smooth internal surface to keep frictional losses to a minimum Capable of withstanding pressure changes and shock |
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45mm Hose description |
23 meters in length 9kg in weight 15 bar maximum working pressure Lay flat hose 4 lengths carried on each pumping appliance 50% reserve held at station High grade synthetic rubber extruded through a polyamide woven jacket |
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70mm Hose description |
23 meters in length 15kg in weight 15 bar maximum working pressure Lay flat hose 10 lengths carried on each pumping appliance 50% reserve carried at station High grade synthetic rubber extruded through a polyamide woven jacket |
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90mm Hose description |
30 meters in length 23.5kg in weight 15 bar maximum working pressure Lay flat hose Up to 4km carried on each Hose Layer Unit Inner lining enveloped by a fine meshed fabric sleeve, bonded to the outer textile reinforced cover |
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150mm Hose description |
5m/10m/50m lengths Lay flat hose Carried on a High Volume Pump |
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Hosereel description |
18.3m per length. 4 sections per drum. 1 drum on each side of pumping appliances 22mm internal length Delivers water at high pressure |
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Hard suction hose description |
2.44 meters in length 100mm internal diameter 2 lengths on each pumping appliance Used to lift from open water |
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What is a delivery hose? |
Used to deliver water from the pump to the fire Hosereel, 45mm and 70mm |
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What is a soft suction hose? |
Feeds the pump from a pressure fed supply (Hydrant) 70mm, 90mm and 150mm |
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What couplings are used on 45mm and 70mm hose? |
Quick release instantanious couplings 65mm diameter internal bore |
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What couplings are used on 90mm and 150mm hose? |
Storz couplings |
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Rules to help look after hose? |
Should be ramped when laid across a road Should not be kinked when under pressure Should not be made up when frozen Should be under run and cleaned before stowing |
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What should be done when a hose is damaged during an incident? |
Use a hose bandage as a temporary repair Replace with a new length as soon as possible Tie an overhand knot at each end of the damaged length Roll the length up from the male coupling |
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What're the 4 types of main branch used? |
Delta Attack 400-S-Pro (500-S-Pro) Rosenbauer Select Flow RB101 Rosenbauer Pro Jet II Delta Attack 100-S-Pro (Hosereel) |
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How can you help control Jet Reaction? |
Adopt a position on even and stable ground Start with low pressure and flow rate settings, then increase when needed Have at least 2 Firefighters on the branch Open and close the branch slowly Make sure the hose behind the branch is laid straight at least 3m |
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What're the flow rate settings for the Delta Attack 400-S-Pro? |
130lpm 230lpm 300lpm 400lpm |
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What're the flow rate settings for the Delta Attack 100-S-Pro? |
50lpm 100lpm 150lpm 230lpm |
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What're the operating pressures for the Delta Attack 100-S-Pro and 400-S-Pro? |
Optimal operating pressure - 6 Bar Normal operating pressure - 5-8 Bar Minimum operating pressure - 3 Bar |
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4 advantages of running the pump in low pressure? |
Less noise Less emissions Less fuel useage Less likely to overheat |
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What's the optimum and minimum working pressure for the Pro Jet II? |
7 Bar with a minimum of 3.5 Bar |
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What should be done when the pump starts to overrun the supply? |
Get a better water supply Shut down any unnesasry jets Reduce branch flow rates Reduce the revs (pressure) Withdraw crews |
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What is the term used when the pump is using more water than is coming into the tank? |
Overrunning the supply |
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What is the ratio between high and low pressure on the pump? |
5:1 |
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What is atmospheric pressure? |
1 Bar |
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What is the principal of lifting from open water? |
Atmospheric pressure exerts downwards force of 1 bar on the Earth's surface. We use this pressure to lift from open water |
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What is the maximum practical lift of a Brigade pump when lifting from open water? |
8m |
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What factors affect the maximum practical lift from open water? |
Overcoming inertia Frictional loss Pump entry loss Imperfect vacuum Temperature Atmospheric pressure |
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If the pump continues to prime, after how long should you check the hard suction hose for bubbles/leaks? |
30 seconds |
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How deep must the suction strainer be? |
Atleast 300mm from the surface of the water |
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What practical and safety considerations must be made when lifting from open water |
Staff must wear PFDs and must be aware of the dangers of working near water Make sure the appliance is on safe and stable ground Be aware of rising and falling tides In low light, setup lighting for the scene Be aware of contamination and water bourne disease |
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What could an increased vacuum reading on the compound gauge mean? (Gauge drops) |
Level of water supply dropped Suction strainer blocked Branches open Burst delivery hose |
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What could a decreased vacuum reading on the compound gauge show? (Gauge rises) |
Water level raised Branches shut down Slight air leak on the suction side of the pump |
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What equipment is needed when lifting from open water? |
Hard suction hose Suction strainers Suction basket Suction wrenches 140-100mm adaptor (permanently fitted to appliance pump) Short line Salvage sheet |
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What is a primer? |
A device that can pump air |
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How heavy is the Lightweight Portable Pump? |
84kg |
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What's the output and maximum output of the LPP? |
Normal: 800lpm at 5bar Maximum: 1000lpm at 4bar |
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What safe working practices must be used when using the LPP? |
Full firefighting kit should be worn when moving and using the LPP The LPP Should only be used in open air The LPP is a 4 person carry Clear the ground of sharp objects and debris before setting the LPP down When operating from a pressure fed supply, make sure the priming valve is closed Never maintain a vacuum without water for more than 3 minutes Do not run the LPP against a closed delivery Do not start the LPP without water or it'll size within 30 seconds The LPP should only be operated on level ground |
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What's the maximum pressure the LPP can output? |
8bar |
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When should the LPP be examined? |
On acceptance Weekly Quarterly After operational use Annually at workshops |
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What operational considerations must be taken into account when using the LPP? |
Chose where to place the LPP carefully depending on ground conditions Decide weather PFDs need to be used for crews The area around the pump should be well lit Be aware of rising and falling tides Do not use the LPP in confined spaces due to exhaust fumes Ear protection must be worn when operating the LPP
Good communication is important Staff must be aware of hot parts of the LPP, especially the exhaust Enough fuel must be available to continue to run the LPP The LPP can provide maximum flow for 2 branches using a dividing breech |
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What's the duration of one fuel tank for the LPP? |
1.5 hours at 5 bar |
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What're the two main reasons for pressure loss in hose? |
Frictional loss in the hose Gravity |
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What're the factors that affect pressure loss? |
Internal diameter of the hose Output of water Meters above or below the water line Total length of hose |
