NEW
Font size
WorksheetsSafety Measures Quiz
Total questions: 70
Worksheet time: 35mins
What is a requirement for an internal water meter for safety?
It needs to be cross bonded.
It needs to be placed outside.
It needs to be painted yellow.
It needs to be installed by a plumber.
What is shown in the image labeled "A boundary meter box"?
A boundary meter box
An internal water meter
A stop valve
A drain off valve
What color is the MDPE pipe used to identify wholesome water?
Red
Blue
Green
Yellow
What is the minimum size for a modern property pipe?
20mm
25mm
30mm
35mm
What type of copper can be used according to the requirements?
Hard copper
Soft copper (R220)
Medium copper
Flexible copper
Where is the meter commonly installed at the property boundary?
In a chamber
Inside the house
On the roof
In the basement
Where can water be isolated according to the requirements?
Only in the road
Only at the meter
Only at the point of entry to the property
In the road, at the meter, or at the point of entry to the property
Under which regulations is everything from the external stop valve at the meter regulated?
Water Regulations 1995
Water Regulations 1997
Water Regulations 1999
Water Regulations 2001
According to the Water Regulations, where should a stop valve be located?
Outside the building
Inside the building, above floor level, near the point of entry
Below floor level
Anywhere in the building
What is the purpose of installing a stop valve as per the Water Regulations?
To increase water pressure
To prevent water from going to any point in the building when closed
To filter the water
To reduce water temperature
What is the maximum recommended height for MDPE above floor level?
100mm
150mm
200mm
250mm
Why should MDPE not be placed above 150mm from the floor level?
It degrades in sunlight
It increases water pressure
It reduces water flow
It is difficult to install
Which types of stop valves can be used according to the Water Regulations?
Only a screwdown (BS1010) stop valve
Only a level arm (BS6675) stop valve
Either a screwdown (BS1010) or a level arm (BS6675) stop valve
Any type of stop valve
How does the stop valve create a watertight seal?
By turning the handle to push a washer against a seating
By using a spanner to tighten the valve
By replacing the head gear
By installing it above the incoming stop valve
What is a cost-effective method of repair if the stop valve jams?
Replace the entire valve
Replace the head gear only
Install a new washer
Use a spanner to fix it
What tool is used to operate the DOV?
A handle
A spanner or key
A screwdriver
A hammer
Where must a DOV be installed in the system?
At the highest point in the system
Above the incoming stop valve and at every low point
Only at the incoming stop valve
At the middle point of the system
Which of the following must a plumbing system comply with?
Building Regulations
Electrical Regulations
Water Regulations
Fire Safety Regulations
What must every plumber prevent?
Leakage of gas
Contamination of wholesome water
Electrical hazards
Structural damage
What must be given in advance for installations?
Payment
Notice
Approval
Inspection
What is one benefit of becoming an Approved Plumbing Contractor?
Higher salary
Access to exclusive tools
Passing the Water Regulations training course
Free advertising
Who has produced the guide to the Water Regulations?
EPA
WRAS
OSHA
WHO
What are the two key tests with cold water systems?
Temperature and Pressure
Pressure and Flow rate
Flow rate and Temperature
Temperature and Volume
Where is pressure normally first tested in a cold water system?
At each outlet
Near the point of entry
At the main valve
At the water meter
Where is flow rate tested in a cold water system?
Near the point of entry
At the main valve
At each outlet
At the water meter
What does pressure refer to in the context of water flow?
The temperature of the water
The force behind water flow
The color of the water
The taste of the water
When is a more accurate reading of water pressure needed?
When installing water softeners
When checking the water temperature
When measuring water color
When tasting the water
What are the two basic means to create pressure in plumbing systems?
Using a heater or a cooler
Using a pump or the weight of water
Using a filter or a purifier
Using a valve or a faucet
What is the flow rate a measure of?
The pressure of water discharging to an appliance
The temperature of water discharging to an appliance
The volume of water discharging to an appliance
The speed of water discharging to an appliance
How is the flow rate measured?
In litres per hour
In litres per minute
In gallons per minute
In cubic meters per second
What would happen if the flow rate was poor?
The bath would fill up faster
The bath would take longer to fill up
The water would be hotter
The water pressure would increase
In a domestic situation, what is usually sufficient to check the flow rate?
A pressure gauge
A thermometer
A visual check
A flow meter
What can be used to check the flow rate more accurately?
A thermometer
A flow cup or weir cup
A pressure gauge
A stopwatch
What is the flow rate equivalent of 60 litres per minute?
0.1 l/sec
1 l/sec
10 l/sec
0.01 l/sec
What is the flow rate equivalent of 6 litres per minute?
0.1 l/sec
1 l/sec
10 l/sec
0.01 l/sec
Which of the following factors can affect pressure and flow?
Daily demand (peak periods)
Color of the pipes
Type of flooring
Weather conditions
What is one of the factors that can affect pressure and flow in a property?
Age of property
Number of windows
Type of paint used
Height of the building
Which of the following is NOT a factor affecting pressure and flow?
Distribution main size
Incoming main size
Installation pipe size
Color of the walls
How can the number of elbows in a pipe system affect pressure and flow?
It can increase the pressure
It can decrease the pressure
It has no effect
It can change the color of the water
Which material-related factor can affect pressure and flow?
Materials used
Type of paint
Type of flooring
Type of insulation
What type of pressure is used in a direct cold water system?
Low pressure
Medium pressure
High pressure
Variable pressure
What is the usual size of the service pipe to the house in a direct system?
20mm MDPE
25mm MDPE
15mm copper
30mm MDPE
What material is the service pipe connected to inside the house in a direct system?
20mm MDPE
25mm MDPE
15mm copper
Lead mains
What precaution is important to take in a direct system?
Preventing leaks
Ensuring high pressure
Taking precautions against backflow
Using larger pipes
What size of MDPE copper or lead mains might old houses have?
15mm
25mm
20mm
30mm
What type of pressure is used in a direct cold water system?
Low pressure
Medium pressure
High pressure
Variable pressure
In a direct cold water system, how is the cold water supplied to each outlet?
Through a storage tank
Directly on top of each outlet
Through a series of pumps
Via a gravity-fed system
In a direct system, what is the only stored water used for?
Cold water system
Hot water system via the cylinder
Drinking water
Garden irrigation
How many DOVs are required to drain the system down in a direct system?
Two
Three
One
None
What is the diameter of the pipework in a high-pressure direct system?
10mm
20mm
15mm
25mm
What is a characteristic of a direct system using a combination boiler?
It stores hot water in a tank.
It uses a separate heater for hot water.
Both hot and cold water are directly off mains.
It requires a water pump for circulation.
In a direct system with a combination boiler, what is the status of stored water?
There is a large amount of stored water.
There is no stored water at all.
Water is stored in a separate tank.
Water is stored in the boiler itself.
Which type of hot water system is similar to a direct system with a combination boiler?
Vented hot water system
Indirect hot water system
Unvented or water jacket heater hot water system
Solar hot water system
What is one advantage of a direct system?
Potable water at every draw off point
Pressure varies during the day
Care when fitting showers/mixer taps
If the mains is turned off you are without water
Which of the following is a disadvantage of a direct system?
Good pressure at all draw off points
No concerns about storage cisterns in lofts
If the mains is turned off you are without water
Potable water at every draw off point
At what times can pressure be very low in a direct system?
6.30–8.30am and 5–7pm
8.00–10.00am and 4–6pm
7.00–9.00am and 6–8pm
5.30–7.30am and 4–6pm
Which of the following is NOT an advantage of a direct system?
Potable water at every draw off point
Good pressure at all draw off points
No concerns about storage cisterns in lofts
Pressure varies during the day
What is an indirect cold water system?
A system where cold water is taken directly from the mains to all outlets.
A system where cold water is taken via the rising main to a high-level storage cistern.
A system where hot water is taken via the rising main to a high-level storage cistern.
A system where cold water is taken directly from the storage cistern to all outlets.
Which outlet is an exception to the low pressure in an indirect cold water system?
Bathroom sink
Shower
Kitchen sink
Toilet
What are the possible sizes for the distribution pipe from the storage cistern in an indirect cold water system?
15mm or 20mm
22mm or 28mm
30mm or 35mm
40mm or 45mm
What type of system is described as a low pressure system feeding most outlets in the property?
Direct system
Indirect system
High pressure system
Closed system
What is the minimum capacity for the water cistern in the indirect system?
100 litres
150 litres
230 litres
300 litres
Which component in the diagram is responsible for storing cold water?
Service valve
Cold water distribution pipe
Cold water storage cistern
Vented hot water storage vessel
Which of the following is an advantage of an indirect system?
More pipework in roof space
Possible contamination of water at draw-off points
Stored supply of hot water, should mains be turned off
More expensive
What is a disadvantage of an indirect system?
The system pressure is unaffected by peak time demand
Stored supply of hot water, should mains be turned off
Only one draw-off point gives potable water
The system is less expensive
Why is the system pressure in an indirect system considered an advantage?
It is affected by peak time demand
It is unaffected by peak time demand
It increases during peak time demand
It decreases during peak time demand
Which of the following is NOT a disadvantage of an indirect system?
More pipework in roof space
Possible contamination of water at draw-off points
The system pressure is unaffected by peak time demand
More expensive
According to BS6700 and the Water Regulations, what is the required capacity for a cold water storage cistern if supplying both hot and cold water?
100-150 liters
150-200 liters
230-250 liters
200-230 liters
How can the cold water storage system be identified?
By inspecting the basement
By inspecting the loft to see the CWSC
By checking the kitchen sink
By measuring the water temperature
What is the required capacity for a cold water storage cistern if supplying either hot or cold water?
50-100 liters
100-150 liters
150-200 liters
200-250 liters
