Podcast
Questions and Answers
The initials BSI stand for?
The initials BSI stand for?
What is the minimum depth for an underground cold water service pipe?
What is the minimum depth for an underground cold water service pipe?
Before turning off the water supply to a dwelling, what is the first action a plumber should take?
Before turning off the water supply to a dwelling, what is the first action a plumber should take?
Type 'A' fittings are also known as?
Type 'A' fittings are also known as?
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Which type of cold water system should be specified for a domestic dwelling in an area where the water supply is poor during periods of peak demand?
Which type of cold water system should be specified for a domestic dwelling in an area where the water supply is poor during periods of peak demand?
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On a cistern supplying an indirect cold water system, where should the cold feed outlet to the domestic hot water cylinder be located?
On a cistern supplying an indirect cold water system, where should the cold feed outlet to the domestic hot water cylinder be located?
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What is the recommended clip spacing for a horizontal cold water service pipe in 15 mm copper?
What is the recommended clip spacing for a horizontal cold water service pipe in 15 mm copper?
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Refer to Figure 1. The system component indicated by the British Standard symbol shown, is a
Refer to Figure 1. The system component indicated by the British Standard symbol shown, is a
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What is the required distance between the water level and the invert level of the warning pipe, on a cold water storage cistern of less than 1000 litres capacity?
What is the required distance between the water level and the invert level of the warning pipe, on a cold water storage cistern of less than 1000 litres capacity?
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What is the main advantage of an indirect cold water system, compared to a direct cold water system?
What is the main advantage of an indirect cold water system, compared to a direct cold water system?
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Refer to Figure 2. The type of fitting shown is
Refer to Figure 2. The type of fitting shown is
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What is the purpose a cold water distributing pipe in an indirect system of cold water supply?
What is the purpose a cold water distributing pipe in an indirect system of cold water supply?
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Which of the following types of fittings would usually be installed on a supply pipe as it enters a domestic dwelling?
Which of the following types of fittings would usually be installed on a supply pipe as it enters a domestic dwelling?
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Which one of the following shut off devices would be an acceptable choice for a new WC cistern on a direct cold water system?
Which one of the following shut off devices would be an acceptable choice for a new WC cistern on a direct cold water system?
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The Water Regulations specify two categories of test, one for rigid pipe installations, and one for systems containing?
The Water Regulations specify two categories of test, one for rigid pipe installations, and one for systems containing?
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According to the Water Regulations, what percentage of the normal working pressure should the test pressure be, when testing rigid pipe installations?
According to the Water Regulations, what percentage of the normal working pressure should the test pressure be, when testing rigid pipe installations?
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Which one of the following can a plumber establish about a cold water system, by inspecting the cold water storage cistern and pipework arrangements?
Which one of the following can a plumber establish about a cold water system, by inspecting the cold water storage cistern and pipework arrangements?
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Before working on a shower pump, what should the plumber do?
Before working on a shower pump, what should the plumber do?
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Which one of the following should be turned off to isolate the float valve to the cold water storage cistern, on a new cold water system conforming to the Water Regulations?
Which one of the following should be turned off to isolate the float valve to the cold water storage cistern, on a new cold water system conforming to the Water Regulations?
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What is the main reason for placing a warning notice on the stop valve when temporarily decommissioning a system?
What is the main reason for placing a warning notice on the stop valve when temporarily decommissioning a system?
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Which one of the following is responsible for ensuring decommissioning records are provided to customers, when undertaking work on a multi-trade site?
Which one of the following is responsible for ensuring decommissioning records are provided to customers, when undertaking work on a multi-trade site?
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What is the most cost effective method of repairing a 'jammed' internal supply stop valve?
What is the most cost effective method of repairing a 'jammed' internal supply stop valve?
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Which one of the following is most likely to be included in a routine maintenance schedule for a cold water system in a dwelling?
Which one of the following is most likely to be included in a routine maintenance schedule for a cold water system in a dwelling?
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What is the most likely cause of noise in a cold water system?
What is the most likely cause of noise in a cold water system?
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Why is it important to notify the customer prior to the water supply being turned off during a lengthy maintenance operation?
Why is it important to notify the customer prior to the water supply being turned off during a lengthy maintenance operation?
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In which one of the following types of float valve, is it possible to replace the piston?
In which one of the following types of float valve, is it possible to replace the piston?
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During which one of the following maintenance operations would it be necessary to wear a dust mask?
During which one of the following maintenance operations would it be necessary to wear a dust mask?
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Guidance on the installation requirements for external water meters is covered by:
Guidance on the installation requirements for external water meters is covered by:
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Which one of the following areas of work is covered by the Water Regulations?
Which one of the following areas of work is covered by the Water Regulations?
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What is the main purpose of a ceramic disc in a pillar tap??
What is the main purpose of a ceramic disc in a pillar tap??
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If a cold water system in a dwelling is not thoroughly flushed out prior to hand over, what could happen?
If a cold water system in a dwelling is not thoroughly flushed out prior to hand over, what could happen?
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Which one of the following documents would be the most appropriate to a maintenance contract for domestic dwellings?
Which one of the following documents would be the most appropriate to a maintenance contract for domestic dwellings?
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Only when a cold water pillar tap is opened does water appear from beneath the hand wheel. This problem can be rectified by:
Only when a cold water pillar tap is opened does water appear from beneath the hand wheel. This problem can be rectified by:
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Whilst working on a maintenance job, a plumber suspects that a communication pipe has burst. The most appropriate course of action would be to:
Whilst working on a maintenance job, a plumber suspects that a communication pipe has burst. The most appropriate course of action would be to:
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What is the minimum height required for maintenance above a cistern of 1000 L or less?
What is the minimum height required for maintenance above a cistern of 1000 L or less?
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A common cause of pin-holing in copper cold water supply pipework, is because the water:
A common cause of pin-holing in copper cold water supply pipework, is because the water:
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What is the most probable cause of an intermittent supply to cold water taps fed from an indirect system?
What is the most probable cause of an intermittent supply to cold water taps fed from an indirect system?
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When carrying out fault finding in an occupied dwelling, what should be the first action?
When carrying out fault finding in an occupied dwelling, what should be the first action?
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One common cause of air locks in an indirect supply to cold tap outlets is that horizontal sections of the:
One common cause of air locks in an indirect supply to cold tap outlets is that horizontal sections of the:
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Rigid screw-in type silencer tubes to float valves are now prohibited because they could:
Rigid screw-in type silencer tubes to float valves are now prohibited because they could:
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Following the commissioning of a new cold water installation, the water flow from the float valve to the cold water storage cistern is very slow. What is the most likely reason?
Following the commissioning of a new cold water installation, the water flow from the float valve to the cold water storage cistern is very slow. What is the most likely reason?
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What is the greatest potential risk of water stagnation in a dwelling?
What is the greatest potential risk of water stagnation in a dwelling?
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Bonding wire should be secured to metal pipework using:
Bonding wire should be secured to metal pipework using:
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What is the purpose of applying temporary earth continuity bonding before removing a section of metallic cold water pipe?
What is the purpose of applying temporary earth continuity bonding before removing a section of metallic cold water pipe?
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Refer to Figure 3. The Type of fitting shown is a
Refer to Figure 3. The Type of fitting shown is a
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Flashcards
BSI
BSI
British Standards Institution.
Minimum depth for cold water service pipe
Minimum depth for cold water service pipe
The minimum depth is 750 mm.
First action before water supply is turned off
First action before water supply is turned off
A plumber should advise the householder.
Type 'A' fittings
Type 'A' fittings
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Cold water system for poor supply
Cold water system for poor supply
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Cold feed outlet position
Cold feed outlet position
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Clip spacing for 15 mm copper
Clip spacing for 15 mm copper
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Warning pipe distance
Warning pipe distance
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Indirect system advantage
Indirect system advantage
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Supply pipe system fittings
Supply pipe system fittings
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Float valve isolation
Float valve isolation
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Decommissioning notice purpose
Decommissioning notice purpose
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Common cause of plumbing noise
Common cause of plumbing noise
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Action when air lock suspected
Action when air lock suspected
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Temporary earth continuity bonding purpose
Temporary earth continuity bonding purpose
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Cause of pin-holing in copper pipes
Cause of pin-holing in copper pipes
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Float valve flow issue post-commissioning
Float valve flow issue post-commissioning
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Maintenance height above cistern
Maintenance height above cistern
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Water stagnation risk location
Water stagnation risk location
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Common maintenance check
Common maintenance check
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Troubleshooting first step
Troubleshooting first step
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Water Regulation coverage
Water Regulation coverage
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Maintenance document for dwellings
Maintenance document for dwellings
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Action on suspected burst communication pipe
Action on suspected burst communication pipe
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Cause of intermittent cold water supply
Cause of intermittent cold water supply
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Tool for checking metal pipe bonding
Tool for checking metal pipe bonding
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Float valve piston replacement options
Float valve piston replacement options
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Required distance for cistern maintenance
Required distance for cistern maintenance
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Ceramic disc function in taps
Ceramic disc function in taps
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Study Notes
Cold Water Mock 3 - Study Notes
- BSI: British Standards Institution
- Underground cold water service pipe minimum depth: 150mm
- Plumber's first action before turning off water supply: Advise the householder
- Type 'A' fittings: Also known as non-manipulative compression fittings
- Cold water system for peak demand: Specify an indirect system
- Indirect cold water system, cold feed outlet: Higher than the cold distribution outlet
- Horizontal cold water service pipe (15mm copper) clip spacing: 1.2m
- British Standard symbol (Figure 1): Supply stop valve
- Water level to invert level (warning pipe): 20mm (for cisterns under 1000L capacity)
- Advantage of indirect cold water systems: Less pipework and fittings, reduced installation costs
- Fitting (Figure 2): Type B manipulative compression fitting
- Purpose of cold water distributing pipe (indirect system): Supply water to cold water appliances
- Fittings for domestic dwelling: Supply stop valve and check valve
- WC cistern shut-off device: Equilibrium valve
- Water Regulations rigid pipe installations and other systems: The regulations specify two testing categories, one for rigid pipe installations and one for systems containing lead, LCS, plastics, or copper.
- Test pressure for rigid pipe installations: 10% below specified normal working pressure
- Plumber's cold water system inspection: Determine if the system is direct or indirect, assess the number of appliances, and gauge likely water pressure
- Shower pump maintenance: Isolate the shower pump from the electrical supply at the consumer unit and remove and retain the fuse.
- Important customer notification: Notify the customer prior to turning off the water supply during lengthy maintenance operations, as it is a statutory requirement of the Water Regulations.
- Cold water storage cistern float valve isolation: Supply stop valve.
- Reason for warning notice on stop valve: Prevent the possibility of backflow, prevent accidental reactivation
- Decommissioning record responsibility: Main contractor or local authority
- Repairing a jammed internal supply stop valve: Isolate the supply, disconnect, and replace.
- Maintenance schedule for cold water: Checking the operation of taps and valves.
- Cause of noise in cold water system: Air bubbles
- Cold water tap fitting type (Figure 3): Quarter turn tap
- Float valve piston replacement capability: Brass diaphragm type.
- Maintenance operation requiring a dust mask: Chemical disinfection of a cold water system
- Water meter installation guidance: BS 8301
- Water Regulations coverage: New cold water system installations, maintenance of cold water installations.
- Ceramic disc purpose (pillar tap): Water flow control, prevents water hammer
- Cold water system stagnation risk: Stagnant water in a cold water system that has not been disinfected.
- Repairing a cold water tap: Re-packing the gland
- Pipework pinhole cause: Acidic water
- Intermittent supply cause (indirect system): Air lock in distribution pipework
Cold Water Mock 3 - Additional Notes
- Figure references refer to diagrams in the provided text. The figures are not included in this summary.
- Multiple questions and answers are summarized, so this document may include similar concepts in slightly different formats.
- Information on recommended clip spacing and distances were included as well.
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Description
This quiz covers essential concepts related to cold water systems used in plumbing, including British Standards and types of fittings. Test your knowledge on the specifications and advantages of both direct and indirect cold water systems. Perfect for plumbing students and professionals seeking to deepen their understanding.
