Unit 315 (Cold water) Whole unit assessment

​Cold water whole unit assessment

​Use the link below to open the textbook, then answer the following questions:



The_City_and_Guilds_Textbook_Plumbing_Book_2_for_t..._----_(1_Cold_water_systems_planning_and_design).pdf

Multiple Choice

What is one of the main topics covered in the chapter on cold water systems?

• The legislation relating to the installation and maintenance of cold water systems

• The history of plumbing in ancient civilizations

• The chemical composition of water

• The impact of climate change on water supply

Multiple Choice

Which act regulates the water industry in England and Wales?

• The Water Industry Act 1991

• The Clean Water Act 1980

• The Safe Drinking Water Act 1974

• The Water Conservation Act 2005

Multiple Choice

What is one of the components of cold water systems discussed in the chapter?

• Backflow protection in plumbing systems

• Solar panel installation

• Electrical wiring

• Gas pipe maintenance

Multiple Choice

Which document is mentioned as having a role in the plumbing industry?

• The Private Water Supplies Regulations 2016

• The Environmental Protection Act 1990

• The Building Regulations 2010

• The Health and Safety at Work Act 1974

Multiple Choice

What is the purpose of the Water Act 2003?

• To introduce new water supply companies

• To regulate water supply installations in Scotland

• To amalgamate and amend previous water legislation

• To create new water by-laws for the UK

Multiple Choice

Which organization enforces the Water Industry Act 1991?

• The Consumer Council for Water

• The Environment Agency

• The Department of Health

• The Office of the Deputy Prime Minister

Multiple Choice

What is the Water Supply (Water Fittings) Regulations 1999 linked to?

• BS EN 806

• BS 6700

• BS EN 8588

• BS 2011

Multiple Choice

What does the term "water undertaker" refer to?

• A company that supplies clean water under Section 67 of the Water Act 1991

• A company that builds water pipelines

• A company that manages water pollution

• A company that sells bottled water

Multiple Choice

Diagram of Water Regulations Guide

• Water Quality Standards

• Water Usage Restrictions

• Water Conservation Tips

• Water Pollution Control

Multiple Choice

What is the main purpose of the Water Supply (Water Fittings) Regulations made under Section 74 of the Water Industry Act 1991?

• To increase water supply costs

• To ensure plumbing systems prevent contamination and wastage

• To enforce private water supply regulations

• To promote the use of private water supplies

Multiple Choice

Which of the following is NOT covered by the Water Supply (Water Fittings) Regulations?

• Contamination of water

• Wastage of water

• Private water supplies

• Misuse of water

Multiple Choice

What is a key responsibility of plumbers under the Water Supply (Water Fittings) Regulations 1999?

• To charge extra for private water supplies

• To ensure installations comply with regulations

• To provide free water fittings

• To ignore outdated systems

Multiple Choice

What does the term "erroneous" mean as used in the document?

• Correct

• Wrong or incorrect

• Expensive

• Efficient

Multiple Choice

What does Regulation 3 of the Water Supply (Water Fittings) Regulations 1999 emphasize?

• The need for regular maintenance of water fittings

• Compliance with regulations at the time of installation

• Installation of new water fittings every year

• Use of water fittings only by licensed plumbers

Multiple Choice

According to Regulation 3, what is NOT allowed regarding water fittings?

• Installation by a certified plumber

• Use in a manner that causes waste or misuse

• Regular inspection by authorities

• Installation in residential areas

Multiple Choice

What must users, owners, and occupiers ensure about the person undertaking plumbing work?

• They have a degree in engineering

• They are aware of and comply with regulations

• They have at least 10 years of experience

• They are members of a plumbing association

Multiple Choice

What is required to be obtained and retained for future reference according to the regulations?

• A receipt of payment

• A certificate of compliance

• A list of materials used

• A warranty card

Multiple Choice

What action is considered a criminal offence under the regulations?

• Installing water fittings without a permit

• Breaching the regulations

• Using water fittings for commercial purposes

• Selling water fittings without a license

Multiple Choice

What does Regulation 5 of the Water Supply (Water Fittings) Regulations require before work is commenced on most types of plumbing installations?

• Written consent from the water undertaker

• Verbal consent from the property owner

• Approval from a local plumber

• Notification to the local government

Multiple Choice

Which of the following is NOT a condition that requires notification and consent for water fittings?

• A bidet with an ascending spray

• A garden watering system designed to be hand-operated

• A reverse osmosis unit

• A standard kitchen sink installation

Multiple Choice

What must be included when notifying the water undertaker about proposed work?

• The plumber's favorite color

• The name and address of the person giving notice

• The time of day the work will start

• The number of workers involved

Multiple Choice

When was the updated version of Part G of the Building Regulations implemented?

• April 2010

• January 2005

• December 2015

• June 2008

Multiple Choice

What is the main focus of G1 in the new regulation Approved Document G?

• Supply of wholesome water for drinking, washing, or food preparation

• Requirements for sanitary conveniences and hand washing facilities

• Provisions for hot water supply and safety

• Requirements for bathrooms in residential buildings

Multiple Choice

What does G3 in the new regulation Approved Document G address?

• Water efficiency in dwellings

• Enhanced provisions on hot water supply and safety

• Requirements for kitchens and food preparation areas

• Requirements for bathrooms in residential buildings

Multiple Choice

What is the purpose of a Water Regulation Compliance Certificate?

• To confirm that plumbing work meets the strict requirements of the regulations

• To certify that a plumber has completed training

• To approve the design of a plumbing system

• To provide a warranty for plumbing installations

Multiple Choice

What is an approved plumber?

• A plumber who has undertaken specific Water Regulations training

• A plumber who has completed a general plumbing course

• A plumber who has worked for more than five years

• A plumber who specializes in residential plumbing

Multiple Choice

What is the main benefit of joining a competent persons scheme (CPS)?

• Self-certifying plumbing supply work without waiting for water company approval

• Receiving a discount on plumbing materials

• Gaining access to exclusive plumbing jobs

• Receiving a certification for international work

Multiple Choice

What is the definition of a multi-storey building in the context of plumbing systems?

• A building with more than two floors

• A building with more than three floors

• A building with exactly three floors

• A building with more than four floors

Multiple Choice

What is a common issue with boosting pumps in water systems?

• They improve water quality

• They cause excessive aeration of water

• They reduce water pressure

• They eliminate the need for cisterns

Multiple Choice

Which of the following is NOT a type of boosting system mentioned in the text?

• Direct boosting systems

• Indirect boosting with a pressure vessel

• Indirect boosting to a storage cistern

• Indirect boosting with a water heater

Multiple Choice

What is the typical pressure range for cold water supplies delivered from the mains?

• 10-20 bars

• 3-7 bars

• 1-2 bars

• 5-10 bars

Multiple Choice

Diagram of a direct boosting system with labeled components such as pump stop, pump start, incoming supply, stop valve, and duplicate pump.

• Diagram of a direct boosting system with labeled components such as pump stop, pump start, incoming supply, stop valve, and duplicate pump.

• Diagram of a direct boosting system with labeled components such as pressure gauge, flow meter, and temperature sensor.

• Diagram of a direct boosting system with labeled components such as electrical panel, control unit, and safety valve.

• Diagram of a direct boosting system with labeled components such as water tank, filtration unit, and chemical injector.

Multiple Choice

What is the purpose of a float switch in a high-level cistern?

• To control the water temperature

• To activate the pumps based on water level

• To filter the water

• To add chemicals to the water

Multiple Choice

What is the main use of the system for direct boosting to a drinking water header?

• For heating water

• For supplying non-drinking water only

• For supplying drinking water to sinks

• For irrigation purposes

Multiple Choice

What should be avoided to prevent wastage of water at sink taps?

• Low water pressure

• Excessive pressure

• Cold water

• Hot water

Multiple Choice

What is the function of a break cistern in indirect boosting?

• To heat the water

• To store water before pumping to a higher level

• To filter the water

• To add minerals to the water

Multiple Choice

What is the primary purpose of using a pneumatic pressure vessel in a building's water system?

• To increase water temperature

• To maintain pressure boost to higher levels

• To filter impurities from water

• To reduce water consumption

Multiple Choice

What does the pneumatic pressure vessel contain?

• A large reservoir of water

• A small water reservoir with compressed air

• A tank of pure oxygen

• A container of carbon dioxide

Multiple Choice

Why must the compressed air in the pneumatic pressure vessel be filtered?

• To increase air pressure

• To ensure dust and insects are eliminated

• To reduce noise levels

• To improve air quality for breathing

Multiple Choice

Diagram of an auto pneumatic pressure vessel with labeled components such as pressure switches, gauge, compressor, and water supply.

• Diagram of an auto pneumatic pressure vessel with labeled components such as pressure switches, gauge, compressor, and water supply.

• Diagram of a hydraulic system with labeled components such as valves, pistons, and oil reservoir.

• Diagram of an electrical circuit with labeled components such as resistors, capacitors, and transistors.

• Diagram of a mechanical gear system with labeled components such as gears, shafts, and bearings.

Multiple Choice

What is the purpose of Regulation 5 in the installation of large-scale cisterns?

• To ensure the cisterns are painted properly

• To notify the water undertaker before installation

• To increase the capacity of the cisterns

• To reduce the cost of installation

Multiple Choice

What material is used for one-piece cisterns according to BS EN 13280:2001?

• Polypropylene (PP)

• Glass-reinforced plastic (GRP)

• Polyethylene (PE)

• Polyvinyl chloride (PVC)

Multiple Choice

What is a characteristic of sectional cisterns?

• They are made from a single piece of material

• They are bolted together from 1 m² sections

• They cannot be tailored to fit any space

• They are only made from plastic

Multiple Choice

What is the primary purpose of overflow pipes in large-scale cisterns?

• To prevent water wastage and damage

• To increase water pressure

• To filter impurities from water

• To heat the water

Multiple Choice

Which feature must an overflow/warning pipe on large-scale cisterns include?

• A heating element

• A vermin screen

• A water filter

• A pressure gauge

Multiple Choice

What is the minimum distance the warning pipe invert needs to be above the maximum water level of the cistern?

• 10 mm

• 25 mm

• 50 mm

• 75 mm

Multiple Choice

What is the capacity range for cisterns with general features mentioned in the document?

• 500 to 1000 litres

• 1000 to 5000 litres

• 2000 to 6000 litres

• 3000 to 7000 litres

Multiple Choice

What is the minimum distance the overflow pipe invert must be located above the water level in the cistern?

• 10 mm

• 15 mm

• 25 mm

• 30 mm

Multiple Choice

For cisterns with an actual capacity greater than 5000 litres, how should the discharge level of the inlet device be positioned?

• At the same level as the overflow pipe

• Twice the diameter of the inlet pipe above the top of the overflow pipe

• Below the overflow pipe

• At the bottom of the cistern

Multiple Choice

What does the 'actual capacity' of a cistern refer to?

• The total volume it could hold when filled to the top

• The maximum volume it could hold when filled to its overflowing level

• The volume of water used daily

• The volume of water left after usage

Multiple Choice

If a type AG air gap is fitted, what should be the minimum diameter of the overflow pipe?

• Equal to the inlet diameter

• Twice the inlet diameter

• Three times the inlet diameter

• Four times the inlet diameter

Multiple Choice

What is the minimum invert level of the overflow for cisterns greater than 1000 litres?

• 25 mm above the working level

• 50 mm above the working level

• 75 mm above the working level

• 100 mm above the working level

Multiple Choice

Which type of valve is commonly used in domestic cistern installations up to 1000 litres?

• Solenoid valves

• Keraflo delayed action float valves

• BS 1212 float operated valves

• Pressure operated float valves

Multiple Choice

What is a key advantage of equilibrium float operated valves over BS 1212 valves?

• Higher pressure loss

• Greater flow rate and lower pressure loss

• More restrictive to water flow

• Requires a larger float

Multiple Choice

What is the main advantage of equilibrium valves?

• They are suitable for low-pressure systems.

• They are used in small cisterns.

• They reduce the effort required to stop water flow.

• They increase water hammer effects.

Multiple Choice

How do pressure operated valves work when the water level drops?

• The valve remains closed.

• The pilot valve opens, releasing diaphragm pressure.

• The diaphragm chamber pressure increases.

• The inlet valve closes permanently.

Multiple Choice

What is a key feature of pressure operated valves compared to equilibrium valves?

• They have a lower head loss.

• They are not suitable for high-pressure supply.

• They are used in small cisterns.

• They reduce variations in water tank levels.

Multiple Choice

What is the primary benefit of using a KeraFlo delayed action float valve in a cistern?

• It allows for continuous water flow.

• It prevents water stratification.

• It increases water pressure.

• It reduces water temperature.

Multiple Choice

How does a solenoid valve operate in a cistern system?

• By using a manual lever to open and close the valve.

• By using a spring to keep the valve open.

• By using an electromagnet to control a plunger.

• By using a float to activate the valve.

Multiple Choice

What is the effect of stratification in a cistern?

• It causes the water to freeze.

• It leads to uniform water temperature.

• It results in varying water quality.

• It increases water flow rate.

Multiple Choice

What is a key consideration when interlinking cisterns to supply drinking water?

• Ensuring the cisterns are of different sizes

• Keeping the cistern volumes to a maximum

• Connecting the cisterns in parallel wherever possible

• Using only one cistern to avoid complexity

Multiple Choice

How can stagnation in cisterns be prevented?

• By using smaller pipes

• By connecting inlets and outlets at the same end

• By using delayed action float operated valves

• By reducing the number of cisterns to a minimum

Multiple Choice

What should be done if it is not possible to connect cisterns in parallel?

• Connect them in series

• Use a single large cistern

• Increase the cistern volume

• Install additional service valves

Multiple Choice

What is the purpose of interconnecting cisterns in series?

• To increase water pressure

• To allow free movement of water between cisterns

• To reduce water temperature

• To prevent water overflow

Multiple Choice

Where should the primary outlet connection be made in a series of cisterns?

• On the same cistern as the FOV

• On the opposite cistern to the FOV

• At the top of the cistern

• At the bottom of the cistern

Multiple Choice

What must accompany an FOV wherever it is fitted?

• A pressure gauge

• An overflow/warning pipe

• A temperature sensor

• A water filter

Multiple Choice

What is the key term used to describe cisterns connected together to form one system?

• Integrated

• Interconnected

• Interlinked

• Interwoven

Multiple Choice

What is one advantage of using break cisterns in water supply systems?

• They increase the water pressure in the system.

• They ensure there is no surge on the mains supply.

• They reduce the need for maintenance.

• They eliminate the need for boosting pumps.

Multiple Choice

What is the purpose of float switches in cisterns?

• To increase water temperature.

• To detect water levels and activate remote equipment.

• To filter impurities from the water.

• To reduce water pressure.

Multiple Choice

What must be fitted to break cisterns to ensure zero backflow?

• A magnetic toggle switch.

• An appropriate air gap.

• A pressure valve.

• A temperature sensor.

Multiple Choice

What is a magnetic toggle float switch used for?

• To activate a micro-switch using opposing forces of magnets

• To measure temperature changes in water

• To convert electrical signals to mechanical movement

• To filter impurities from water

Multiple Choice

What is the function of a transducer in large-scale water systems?

• To convert a signal from one form to another

• To heat water to a specific temperature

• To filter water impurities

• To measure water pH levels

Multiple Choice

What is the maximum temperature for stored wholesome water according to the Water Supply (Water Fittings) Regulations?

• 15°C

• 20°C

• 25°C

• 30°C

Multiple Choice

What does the term "potable" mean?

• Suitable for irrigation

• Drinkable

• Contaminated

• Heated

Multiple Choice

What are the two common types of boosting pumps?

• Horizontal single-stage and vertical multi-stage

• Horizontal multi-stage and vertical single-stage

• Horizontal centrifugal and vertical centrifugal

• Horizontal axial and vertical axial

Multiple Choice

Which component is used to sense pressure and flow in a typical pump package?

• Accumulator

• Transducer

• Control box

• Float switch

Multiple Choice

What is the purpose of an accumulator in a pump package?

• To prevent pumps from running dry

• To monitor pressure differentials

• To assist in providing sufficient system pressure

• To sense pressure and flow