Hoses, Hydrants & Water supplies, Branches & Adaptors

Question 1

Requirements of a good hose?

7

Answer 1

Be reliable in use

Be resistant to bursting, leaking, chemical damage or kinking when passed around bends/corners

Should not stretch excessively when pressurised(5% max in length) and not expand (10% max in diameter)

Should be light and easy to handle. Able to be made up wet or dry

Should be smooth surfaced internally to keep frictional loss to a minimum

Should be capable of withstanding pressure to changes and shock

Question 2

Hoses that lay flat until filled with water is called?

Answer 2

Lay flat hose

Question 3

What four diameters are the lay flat hoses available in?

Answer 3

45mm, 70mm, 90mm, 150mm

Question 4

How many lengths of 70mm hose are carried on the pump and pump ladder?

Answer 4

10

Question 5

How many lengths of 45mm hose are carried on the pump and pump ladder?

Answer 5

4

Question 6

How long are the 45mm and 70mm hose

Answer 6

23 meters

Question 7

45mm hose weigh how much?

70mm hose weigh how much?

Answer 7

45mm= 9kg

70mm= 15kg

Question 8

The maximum working pressure of a 45mm and 70mm hose is?

Answer 8

15 bar

Question 9

90mm hose is carried on what type of appliance?

Answer 9

Carried on hose laying unit with 4km of hose on each appliance

Usually yellow in colour

Question 10

90mm hose is how long?

90mm hose weigh how much?

Answer 10

30m

23.5kg

Question 11

Maximum working pressure for 90mm hose is?

Answer 11

15 bar

Question 12

150mm hose is carried on what appliance?

Answer 12

High volume pump

Yellow in colour

Question 13

150mm hose is available in three lengths which are?

Answer 13

5m, 10m, 50m

Question 14

Where are hosereel hose stored?

Answer 14

Coiled in drums in the side lockers of an appliance

Question 15

Internal diameter of a hosereel hose is?

Answer 15

19mm

Question 16

The hose reel is …. per length, four lengths per drum, one drum on each of a pumping appliance

(Fill in the blank)

Answer 16

18.3m

Question 17

What is the length of the hard suction hose?

What is the diameter of the hard section hose?

Answer 17

2.44m

100mm

Question 18

How many lengths of hard section hose is carried on each appliance?

Answer 18

Two

Question 19

5 types of hoses are?

Answer 19

45mm & 70mm

90mm

150mm

Hosereel hose

Hard suction hose

Question 20

Two types of hose couplings?

Answer 20

Instantaneous coupling

Storz couplings

Question 21

Hose identification - what are the four colour coded Bandit strap and what does it indicate?

Answer 21

Yellow - Southern

Orange - Eastern

Green - Western

Black - Training centres

Question 22

What does the unique ID number attached to the bandit strap consist of?

Answer 22

Three digit station call sign

Four digit ID number

Single digit relating to the diameter of the hose
(E.g 7 = 70mm & 4 = 45mm)

Question 23

Care and repair of hose - what rules should be observed?

Answer 23

Hose should be ramped when laid across a road

Hose should not be kinked when under pressure

Hose should not be made up when frozen

Hose should be under-run and cleaned before stowing

Question 24

When should hoses be tested?

Answer 24

On acceptance

After operational use

Annually

Question 25

All hydrants have to conform to a British standard and have the following features which are? (3)

Answer 25

65mm round thread outlet to enable the attachment of our standpipes Minimum water flow of 2000 litres per minute(lpm) at a pressure of 1.7 bar, with water flowing Anti clockwise opening

Question 26

Hydrant plates are coloured yellow with a large 'H' in black lettering.. What else will hydrant plates have on them? (4)

Answer 26

The plate will show wether the hydrant is a single or double The number between the arms of the 'H' is the size of the main in inches or millimetres The number between the legs of the 'H' is the distance to the hydrant from the plate in feet or metres Some plates give directions to the nearest hydrant

Question 27

Hydrant gear consists of?

Answer 27

Standpipe, key and bar

Question 28

Two basic designs of leak detection devices are?

Answer 28

Magnetic (Can be removed safely & replaced after the hydrant has been shut down) Screw on (Should not be refitted but left at bottom of the pit. The water office should be informed)

Question 29

When are hydrants tested?

Answer 29

A visual inspection should be undertaken yearly All hydrants should be tested every four years to make sure they are available for use. This is carried out between April and September

Question 30

What are the 3 types of branches?

Answer 30

Rosenbauer RB 101 Rosenbauer Project2 Ultimatic hosereel branch

Question 31

What are the flow rates of the rosenbauer RB 101 | 4

Answer 31

130lpm, 230lpm, 300lpm, 400lpm

Question 32

The specified bars for all flow settings on a rosenbauer RB 101 is?

Answer 32

6 bars - however can still operate effectively down to 3 bars if the optimum pressure cannot be achieved

Question 33

Which branch is designed to provide a combination of a solid core jet or spray at the same time?

Answer 33

Rosenbauer Project2

Question 34

Rosenbauer Project2 has an effective working pressure range between what? Has a throw of?

Answer 34

3.5 bar and 7 bars 57meters

Question 35

At 7 bar, the rosenbauer Project2 jet of .....lpm and a max flow rate of ..... lpm with the jet and spray combined

Answer 35

630lpm 930lpm

Question 36

Te ultimatic hosereel branch has a flow rate of

Answer 36

115-150lpm with either 19mm or 45mm hose attached

Question 37

What is used to extinguish chimney fires?

Answer 37

Chimney nozzle

Question 38

What are ground monitors?

Answer 38

A type of branch designed to operate unattended at ground level (Akron mercury ground monitor) is a type of ground monitor

Question 39

When are ground monitors used when?

Answer 39

A larger volume of water or foam is required than can be provided by hand controlled branches Operations require extinguishing media to be thrown a greater distance Operations require extinguishing media over long time periods in the same area of operations, for example foam attack, cooling of surfaces, large fires

Question 40

The Akron mercury ground monitor has a choice of three nozzles which are?

Answer 40

1) a variable flow rate variable jet/spray water deployment nozzle, which delivers water at flow rates of 950lpm, 1400lpm and 1900lpm 2) a single flow rate deluge nozzle, which delivers water at a flow rate of 1750lpm 3) a single flow rate foam nozzle, which delivers pre-mixed, aspirated foam at a flow rate of 950lpm

Question 41

Two types of hose adapters

Answer 41

Hosereel adaptor 90mm hose adaptor kit

Question 42

Hosereel adaptor enables...

Answer 42

A length of hose to be connected to a standard 65mm instantaneous outlet and then connecting 70/45mm hose

Question 43

90mm hose adaptor kit is used for...

Answer 43

Connecting Storz couplings to standard instantaneous couplings

Question 44

90mm hose adaptor kit consists of?

Answer 44

A 90mm hose tail. This is a 2m length of 90mm hose, with a Storz coupling at one end and a female instantaneous coupling at the other end An instantaneous coupling to storz coupling adaptor Carried in red NATO box (2 are carried on pumping appliances)