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WorksheetsDomestic Cold Water 6035-02 | Part 4
Total questions: 30
Worksheet time: 15mins
What is the average water usage in the UK in L per person, per day?
25L
50L
100L
150L
STATEMENT: The Water Regulations 1999 were introduced to encourage the; waste, undue consumption, misuse, contamination and erroneous measurement of water
True
False
Who has responsibility for repairing and maintaining the Service pipe?
Local authority
Government
Property owner
Water undertaker
At what temperature does temporary hard water begin to precipitate limescale?
40oC
85oC
65oC
75oC
Which method is used to treat very hard water.
Galvanic cell
Base exchange water softener
Chemical dosing
Electromagnetic waves
What colour is MDPE?
Black
Blue
Red
Yellow
According to the Water Regulations, where should a stop valve be placed
Inside the airing cupboard, as close as possible to the door
Under the floorboards near the front door
Inside the building, as close as possible to the entry point of the pipe.
Outside the building as close as possible to the front door
Where should drain off valves be placed?
At the high point of every run
Anywhere that it can't be seen
At the low point of every pipe run
None of these
What is the minimum size of distribution pipe coming from a CWSC?
15mm
22mm
28mm
35mm
What is the minimum distance that a water main should be buried underground?
650mm
750mm
850mm
950mm
What grade of copper is permitted for use on underground services?
R290
R250
R270
R220
What does the "D" in MDPE stand for?
Direction
Drop
Distance
Density
Identify this valve.
BS1212 part 1
BS1212 part 2
BS1212 part 3
BS1212 part 4
Identify the High Neck Pillar tap
Identify the BS1212 Part 2 Float Operated Valve
Which type of FOV is recommended when installing a brand new CWSC?
BS1212 Part 1
BS1212 Part 2
BS1212 Part 3
BS1212 Part 4
Identify the Bib tap
What is the minimum distance a cold distribution pipe connection should be made from the base of the cistern?
20mm
35mm
25mm
30mm
How many fluid categories are there?
3
4
5
6
When water is drawn back out of an appliance due to negative pressure. What does that phrase describe?
Back travel
Back flow
Back pressure
Back syphonage
What is a double check valve used for?
Protect category 1 water from category 3 water
Protect category 1 water from category 4 water
Protect category 1 water from category 1 water
Protect category 1 water from category 2 water
What is the minimum measurement for an AUK 1 air gap
100mm
200mm
300mm
400mm
What is the minimum distance for an AUK 2 air gap for a wash basin with 21 in BSPT taps
15mm
20mm
25mm
30mm
What is the pressure when testing rigid pipe
1.5 times working pressure
3 times working pressure
2 times working pressure
2.5 times working pressure
Wen using plastic pipe test A what is the length of time the system is at 1.5 times working pressure
0 mins
15 mins
30 mins
60 mins
The working pressure for a for a system was designed to be 5 bar. What should the test pressure be?
6.5 bar
7 bar
7.5 bar
8 bar
What is this item used to measure?
Flow rate
Outlet pressure
Identify number 2 on this picture.
Trunk main
Principle main
Local main
Water Undertakers main
What kind of fittings should be used to avoid contamination?
WRAS approved fittings
Corrosion resistant fittings
Contamination resistant fittings
Compression fittings
STATEMENT: The cold feed, feeds all of the outlets on an indirect system.
False
True
