WorksheetsMTL2 Cold Water Learner Outcome 7
Total questions: 21
Worksheet time: 11mins
Why is the maintenance of cold water systems important?
To reduce water pressure
To ensure systems and components give good service throughout their working life
To increase water temperature
To avoid installing new systems
When is cold water system maintenance usually carried out if the supply cannot be interrupted?
During peak working hours
Out-of-normal working hours
Only on weekends
During system installation
Which of the following is NOT listed as a planned maintenance task?
Inspection and cleaning of cisterns
Maintenance of water softeners
Installation of new pipework
Checking flow rates at outlets
What should be consulted when servicing appliances in a cold water system?
Local building regulations
Manufacturer’s instructions
Plumbing trade magazines
Water supply company guidelines
Why should a record of all repairs and maintenance tasks be kept?
To calculate water bills
To provide a record of past problems
To comply with insurance requirements only
To avoid future inspections
What is a key indicator of a concealed pipe leak during visual inspection?
Rust on pipe clips
Damp patches on walls or ceilings
Blue/green stains on taps
Water level in cisterns
Which of the following checks helps identify a faulty Float Operated Valve (FOV)?
Inspecting for blue/green stains
Checking water level for signs above shut-off level
Turning isolation valves off
Looking for damp patches on ceilings
What should be inspected inside a plastic cold water storage cistern during maintenance?
Pipe clips and brackets
Debris on the bottom of the cistern
PTFE tape around the spindle
Gate valve corrosion
What is the first step when dealing with a leaking cistern?
Drain the cistern immediately
Isolate the cold water inlet supply and place a warning notice
Remove and replace the cistern
Check for rust on the cistern
What is a common cause of squealing or humming noises when a tap is opened?
Loose pipe clips
Faulty tap washers
Incorrect pipe size
Water hammer arrester failure
What is the best way to prevent banging noises caused by loose pipework?
Reduce water pressure
Replace all washers
Locate and secure the pipework
Install larger diameter pipes
What device can help reduce water hammer if securing pipework is not possible?
Pressure reducing valve
Water hammer arrester
Float operated valve
Isolation valve
What is the first action when dealing with leakage in internal cold water pipework?
Replace the pipe immediately
Isolate the water and drain down the pipework
Call the water authority
Fit a water hammer arrester
What is the first step when re-washering a BS1010 tap with a rising spindle?
Remove the tap head
Isolate the water supply and relieve pressure
Remove the jumper plate
Check the fibre sealing washer
Why should a plug be placed in the sink during tap repair?
To prevent water splashing
To keep the tap steady
To stop screws and nuts from falling down the waste
To avoid damaging the washer
What should be used to prevent the tap body from spinning when breaking the joint?
Adjustable spanner only
Water pump pliers with a cloth in the jaws
PTFE tape
Tap reseating tool
What type of grease should be used when re-greasing the spindle?
Petroleum grease
Silicon grease
Lithium grease
Graphite grease
What tool is used if the tap seat has grooves or pits?
Adjustable spanner
Tap reseating tool with correct grinding head
Water pump pliers
Packing gland nut
What is the most effective way to prevent problems with ceramic disc taps?
Regularly clean the discs
Replace the head workings with a like-for-like replacement
Use PTFE tape on the spindle
Install a water hammer arrester
What is the usual solution for a faulty service valve?
Replacing the washer
Replacing the entire valve
Tightening the gland nut
Applying PTFE tape
Why is it important to record the temperature of cold water in a maintenance log?
To prevent freezing
For legionella protection
To check insulation quality
To monitor tap wear
