NEW
Font size
WorksheetsCold water pt1
Total questions: 33
Worksheet time: 17mins
What is the maximum depth a water main service pipe should be laid at?
750mm
1,850mm
1,350mm
1,750mm
Fluid category 1 represents:
A serious health risk
A significant health risk
A slight health risk
No health risk
Which one of the following water pipes connects the local main to the water undertaker’s stop valve?
The distribution pipe
The feed pipe
The communication pipe
The service pipe
A cold water storage cistern base must be supported:
Over the whole of its base
Over at least three bearers
By using chipboard
Over the majority of its base
Which one of the following back flow
prevention devices must be
installed on a supply to a hose union bib tap, according to the Water Regulations?
AUK 2 air gap
Single check valve
Fullway gate vale
A double check valve
The plastic medium density supply pipe, which is blue, is manufactured from which of the following materials?
Black MDPE
Yellow MDPE
MDMA
Blue MDPE
The Water Regulations state that a mixer tap which allows the hot and cold water to mix in the body of the tap with unbalanced pressures must have:
Double check valve on both hot and cold supplies
Single check valve of both hot and cold supplies
AUK 3 air gap.
AUK 2 air gap
When installing pipework in a property, what must happen to all open-ended pipework if you leave the site?
Capped off with push fit.
Appliances must be fitted
Left alone
Labelled and taped
Which one of the following can
affect the pressure and flow rates to the incoming main to a property?
a. Peak demand periods
The size of the CWSC in the loft
The square metre floor area of the property
How close the water meter is to the property
The use of approved fittings,
WRAS approved, is because:
They are legal and avoid contamination
They are cheap and can be fitted easily
They come with a longer warrantee than other fittings
Their quality is not as good, but will work.
According to the Water Regulations, where must a drain-off valve be
placed?
At every low point in the system
At every high pressure point in the system
At every high point in the system
At every low pressure point in the system
Which one of the following
connections to the CWSC must be
screened?
Cold supply pipe
Cold feed pipe
Warning pipe
Cold distribution pipe.
A double check valve is used to protect category 1 water (wholesome water) from what other category of water
Category 5
Category 4
Category 2
Category 3
Give a definition of back flow
Water that gets sucked back up a hose pipe
Water is allowed to flow in the opposite direction to which it is designed to travel
Water is allowed to travel down the drain
Water that is drawn back up to the CWSC up the Hot water vent pipe
Give a definition of back syphonage
When a toilet cistern doesn't flush correctly
When hot and cold water are mixed inside a mixer tap
Water is drawn back out of an appliance due to negative pressure (sucking).
Water is drawn back out of an appliance due to positive pressure.
What needs to be connected to a Float valve to a Cold water cistern.
Gate valve
Non return valve
Service valve
Water meter
A cold water system were all the outlets are from the mains is know as?
Direct
Indirect
Basic
One pipe
A cold water system were most of the outlets are from a cold water cistern is know as?
Direct
Indirect
Basic
One pipe
The min size for a water main is?
15 mm
22 mm
28 mm
10 mm
Fluid category 1 represents:
A serious health risk
A significant health risk
A slight health risk
No health risk
Which of these is a man-made way of obtaining water
Natural springs
Artesian well
Boreholes
Upland spring
Water with a pH > 8.5 could indicate the water is:
Too hot
Too cold
Is hard water
Is soft water
What is the purpose of the Water Supply (Water Fittings) Regulations 1999 to protect against....
Waste, misuse, undue consumption, contamination of drinking water and erroneous measurement.
Unauthorised repairs being carried out.
The use of lead pipe.
The use of galvanised LCS pipe.
Stop tap
Gate valve
Pushfit drain off
Service valve
This gate Valve can be used on what pressure water pipework?
Low pressures
High pressures systems
Mains pressure systems
All of the above
What is shown in the picture?
Fluidmaster Push Button Cable Dual Flush Valve
Float Valve Part 2 1/2" High Pressure
Torbeck Float Fill Valve 1/2" Side Inlet
Plastic Ball Float 150mm
What is shown in the picture?
Fluidmaster Push Button Cable Dual Flush Valve
Float Valve Part 2 1/2" High Pressure
Torbeck Float Fill Valve 1/2" Side Inlet
Plastic Ball Float 150mm
One of the major problems when leaving a dead leg in a cold water pipe is:
Electrolytic corrosion
Pitting of pipework
Reduction in water flow
Possible bacterial growth
What is the minimum depth a water main service pipe should be laid at?
750mm
1,850mm
1,350mm
1,750mm
A modern cold water main should be made of?
Copper
LCS
PVC
MDPE
Which type of valve is commonly used to isolate a cold water storage cistern for maintenance?
Double check valve
Stopcock
Gate valve
Ball valve
What is the main reason for insulating cold water pipes in a property?
To prevent corrosion
To reduce heat loss
To increase water pressure
To prevent freezing
According to Water Regulations, which material is NOT permitted for use in potable water supply pipes?
MDPE
Copper
Lead
PVC
