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The legal requirements for the installation of cold water services are stated in the
The legal requirements for the installation of cold water services are stated in the
To establish whether a cold water supply to a dwelling is adequate to feed all the plumbing appliances, the best item of equipment to use is a
To establish whether a cold water supply to a dwelling is adequate to feed all the plumbing appliances, the best item of equipment to use is a
A plumbing operative identifies that a low pressure cold water system does not provide a suitable flow rate to an electric shower, supplied by the plumbing company, that is to be installed. Who should be the first point of contact?
A plumbing operative identifies that a low pressure cold water system does not provide a suitable flow rate to an electric shower, supplied by the plumbing company, that is to be installed. Who should be the first point of contact?
Which one of the following is approved for use on underground service pipes?
Which one of the following is approved for use on underground service pipes?
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The Water Regulations state that the minimum permissible distance from the external wall of a dwelling, to where an uninsulated service pipe enters the inside of the building, is
The Water Regulations state that the minimum permissible distance from the external wall of a dwelling, to where an uninsulated service pipe enters the inside of the building, is
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The last isolation valve on a supply pipe to a cold water storage cistern is the
The last isolation valve on a supply pipe to a cold water storage cistern is the
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The recommended clip spacing for a vertical cold water service pipe in 15 mm copper is
The recommended clip spacing for a vertical cold water service pipe in 15 mm copper is
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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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In addition to a warning pipe, an overflow pipe is required on cisterns of more than what capacity?
In addition to a warning pipe, an overflow pipe is required on cisterns of more than what capacity?
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The main advantage of a direct system of cold water, compared to an indirect system of cold water, is that
The main advantage of a direct system of cold water, compared to an indirect system of cold water, is that
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Which one of the following grades of copper pipework is permissible for use on underground service pipework?
Which one of the following grades of copper pipework is permissible for use on underground service pipework?
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A distributing pipe in a cold water system
A distributing pipe in a cold water system
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The underground pipe that connects the water undertaker's main to the boundary stop valve is called the
The underground pipe that connects the water undertaker's main to the boundary stop valve is called the
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The correct method for making a joint between a float operated valve and the wall of a plastic cold water storage cistern, is to use
The correct method for making a joint between a float operated valve and the wall of a plastic cold water storage cistern, is to use
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The hydraulic soundness test specification on cold water supply and distributing pipes can be found in
The hydraulic soundness test specification on cold water supply and distributing pipes can be found in
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When carrying out soundness testing, an interim test should
When carrying out soundness testing, an interim test should
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On an indirect cold water system, the best method of isolating the supply to the cold tap on the bath, would be to turn off the
On an indirect cold water system, the best method of isolating the supply to the cold tap on the bath, would be to turn off the
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Whilst removing pipework to a cold water storage cistern, a plumbing operative notices some damaged electrical cabling. The correct course of action is to
Whilst removing pipework to a cold water storage cistern, a plumbing operative notices some damaged electrical cabling. The correct course of action is to
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Before work commences on moving an instantaneous shower to a new position, the plumber should
Before work commences on moving an instantaneous shower to a new position, the plumber should
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A cold water system is to be permanently de-commissioned. The best method of ensuring that the water supply can not be re-used is to turn off the
A cold water system is to be permanently de-commissioned. The best method of ensuring that the water supply can not be re-used is to turn off the
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It is advisable to place a warning notice on the supply stop valve when carrying out temporary system decommissioning, in a domestic dwelling
It is advisable to place a warning notice on the supply stop valve when carrying out temporary system decommissioning, in a domestic dwelling
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Which one of the following would be the most appropriate to receive decommissioning records, for work carried out in a dwelling?
Which one of the following would be the most appropriate to receive decommissioning records, for work carried out in a dwelling?
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Information on the maintenance requirements of an instantaneous shower can be obtained from the
Information on the maintenance requirements of an instantaneous shower can be obtained from the
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Copper supply pipe is most at risk from corrosion when
Copper supply pipe is most at risk from corrosion when
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Before starting work on a lengthy maintenance job, a plumber's first action should be to
Before starting work on a lengthy maintenance job, a plumber's first action should be to
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Refer to Figure 2 which shows an equilibrium float valve. The metering pin is indicated by the number
Refer to Figure 2 which shows an equilibrium float valve. The metering pin is indicated by the number
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In which one of the following cold water components, can the valve seating be repaired?
In which one of the following cold water components, can the valve seating be repaired?
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Safe access equipment would usually need to be available when working on a
Safe access equipment would usually need to be available when working on a
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The performance specification for a shower pump can be found in the
The performance specification for a shower pump can be found in the
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British Standard 6700 provides specific guidance on the design, installation, testing and maintenance of
British Standard 6700 provides specific guidance on the design, installation, testing and maintenance of
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The purpose of a packing gland on a stop valve is to
The purpose of a packing gland on a stop valve is to
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Excessive water pressures in a cold water system can be controlled by fitting a pressure
Excessive water pressures in a cold water system can be controlled by fitting a pressure
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A plumbing company has a contract to maintain the systems on a housing estate. Which one of the following documents would state the type of work required to be undertaken?
A plumbing company has a contract to maintain the systems on a housing estate. Which one of the following documents would state the type of work required to be undertaken?
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The most likely cause of low water pressure on the cold water supply, to a kitchen sink tap in a direct system, is that
The most likely cause of low water pressure on the cold water supply, to a kitchen sink tap in a direct system, is that
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Whilst working on a maintenance job, a plumber suspects that an underground supply pipe has burst. The most appropriate course of action would be to
Whilst working on a maintenance job, a plumber suspects that an underground supply pipe has burst. The most appropriate course of action would be to
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There is no supply to a hot water tap on the bath when it is opened. The cold water system is indirect. The most likely cause of the problem is a fault on the
There is no supply to a hot water tap on the bath when it is opened. The cold water system is indirect. The most likely cause of the problem is a fault on the
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The water from the shower head of a low pressure thermostatic mixer valve is constantly cold. The most likely cause of the problem is that the
The water from the shower head of a low pressure thermostatic mixer valve is constantly cold. The most likely cause of the problem is that the
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Other than a leaking pipe or fitting, the most probable cause of excessive moisture on exposed cold water copper pipework within a dwelling is
Other than a leaking pipe or fitting, the most probable cause of excessive moisture on exposed cold water copper pipework within a dwelling is
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A metal plate is required at the point where the float valve tail penetrates the wall of a plastic cold water storage cistern in order to
A metal plate is required at the point where the float valve tail penetrates the wall of a plastic cold water storage cistern in order to
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Which one of the following describes best practice when fitting a replacement cold water storage cistern to an indirect system?
Which one of the following describes best practice when fitting a replacement cold water storage cistern to an indirect system?
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Certain types of approved float valve may be fitted with a flexible type of silencer tube, in order to
Certain types of approved float valve may be fitted with a flexible type of silencer tube, in order to
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Which one of the following types of fitting would usually be provided on the cold feed pipe to a hot water storage vessel in a domestic dwelling?
Which one of the following types of fitting would usually be provided on the cold feed pipe to a hot water storage vessel in a domestic dwelling?
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To help prevent the risk of water stagnation in a linked cold water storage cistern arrangement
To help prevent the risk of water stagnation in a linked cold water storage cistern arrangement
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Prior to carrying out any maintenance work on an electric instantaneous hot water heater, the plumber should
Prior to carrying out any maintenance work on an electric instantaneous hot water heater, the plumber should
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When working on an existing system, temporary earth continuity bonding should be used when removing
When working on an existing system, temporary earth continuity bonding should be used when removing
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Study Notes
Cold Water Mock 2 - Study Notes
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Legal Requirements: Cold water service installations are governed by British Standards, Building Regulations, and Water Regulations. Construction Regulations are not mentioned as a source.
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Water Supply Adequacy: A flow meter is the best tool to assess if a dwelling's cold water supply is sufficient for all plumbing appliances.
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Plumbing Operative Issues: If a plumbing operative encounters low water pressure issues for a new electric shower installation, the first point of contact should be the customer's plumbing company, not the water company or local authority.
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Underground Service Pipes: Solder fittings with lead/tin solder are an approved material for underground service pipes. Push fit plastic fittings, Type 'B' compression fittings, and Type 'A' compression fittings are not mentioned.
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External Pipe Distance: The minimum permissible distance from an external wall to where an uninsulated service pipe enters a building is 750 mm (not 150, 250, or 550 mm).
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Vertical Cold Water Pipe Spacing: The recommended clip spacing for a vertical 15 mm copper cold water service pipe is 1.5 meters.
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British Standard Symbol: Figure 1 (if available) depicts a check valve.
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Cistern Overflow: Overflow pipes are needed for cisterns with a capacity exceeding 1000 liters.
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Cold Water System Types: The main advantage of a direct cold water system over an indirect system is reduced noise potential. It does not relate to lower cost, improved hot water pressure, or reduced float valve pressure.
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Copper Pipe Grades: R220 Micro-bore copper pipework is allowed for underground services.
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Distributing Pipe: A distributing pipe in a cold water system connects to the appliances' inlets and outlets (not the cistern's outlet or inlet). It is not a pipe used in solely private supplies.
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Underground Connection: The underground pipe that links the water provider's main to the property boundary is called a service pipe. (not rising main, communication pipe, or cold feed pipe).
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Plastic Cistern Joint: The correct method for joining a float-operated valve to a plastic cold water storage cistern wall uses plastic jointing washers with a stiffener plate, not oil-based joint, fabricated lead, or non-toxic silicon compounds.
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Hydraulic Soundness Tests: Specifications for hydraulic soundness tests on cold water supply and distributing pipes are found in the Water Regulations (not BS 6281 or CP 312 Part 1).
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Interim Testing: An interim test during soundness testing includes a visual inspection of all components, and aims to prevent water damage from leaks during the test (not carried out by a Water Company representative, or in specific sections of pipelines).
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Cold Water System Isolation: For an indirect cold water system, the best method to isolate cold water tap supply to the bath tap is to turn off the cold distributing pipe service valve.
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Electrical Cabling Damage: If plumbing work causes damage to electrical cabling, the operative must isolate the affected circuit and report the fault to the supervisor.
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Shower Relocation: Before relocating an instantaneous shower the electrical supply must be isolated, tested, and the cables disconnected. Incorrect methods include advising just the customer that the power will be cut off.
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Decommissioning: A warning notice should be put on the supply stop valve when a system is being temporarily decommissioned (not just for re-washering of a float valve). The appropriate recipient for decommissioning records is the water undertaker, not the customer.
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Instantaneous Shower Maintenance: Information about instantaneous shower maintenance is obtained from the manufacturer's (not Water Regulations Guidelines) technical data or installation materials specifications.
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Copper Pipe Corrosion: Copper piping is most vulnerable to corrosion when improperly insulated in areas like roof spaces, and/or connected to polythene piping below ground, not jointed with zinc-containing brass fittings, or directly clipped to plasterboard.
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Maintenance Job Documents: Work details for a plumbing maintenance job on a housing estate are found in maintenance specification documents (not the materials schedule or Bill of Quantities).
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Cold Water System Pressure Control: Excessive water pressure in a cold water system is regulated by a reducing valve.
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Equilibrium Float Valve: The metering pin on the equilibrium float valve is indicated by the number 3. (Refer to Figure 2)
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Valve Seating Repair: Only a diaphragm float valve can allow for valve seating repair (not spherical service valve or sink pillar tap).
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Maintenance Equipment: Safe access equipment, like scaffolding, is needed when working on parts of a cold water storage system that are located externally.
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Shower Temperature Issues: A low-pressure shower valve that consistently produces cold water likely points to a blocked or incorrectly connected cold water supply (not a problem from the connections of the shower itself).
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Excessive Moisture on Pipes: Excessive moisture on cold water copper pipes, other than from a leaking pipe or fitting, can be indicative of condensation or capillary action.
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Cistern Float Valve Connection: A metal plate at the float valve penetration point in the plastic storage cistern (rather than increase stress on the arm) is needed for a water tight joint.
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Cold Water Storage Cistern Replacement: Optimal practice when installing a new cold water storage cistern involves making the outlet connections at the bottom, and avoiding contamination risk. (the minimum suggested tank capacity is not part of this recommendation)
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Temporary Disconnections: When maintenance is being performed, the correct procedure for a temporary system shutdown is to isolate the supply, cap the pipes, disconnect the power supply at the consumer unit, and keep the disconnection process safe.
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Temporary Earth Bonding: Temporary earth continuity bonding is required when removing sections of pipework or electrical appliances during building maintenance. Copper pipe removal does not necessarily require it.
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Description
Test your knowledge on the legal requirements and best practices for cold water service installations. This quiz covers essential topics such as water supply adequacy, plumbing operative issues, and approved materials for underground pipes. Perfect for plumbing professionals preparing for certification.
