Cold Water 3

The tool in figure 1 is most likely to be used for which one of the following?

• Jointing copper tube.
• Making fixings to masonry walls.
• Making connections to plastic cisterns.
• Jointing galvanised pipe.

Which British Standard makes recommendation on the minimum size of cold water storage cistern for a particular property?

• BS EN 12056.
• b) BS 8000.
• c) BS 6700.
• d) BS5452.

The water flow rate from a cold water tap is 8 litres per minute, what is the flow rate measured in litres per second?

• a) 0.10 l/s.
• b) 0.13 l/s.
• c) 0.45 l/s.
• d) 0.73 l/s.

The quantity of fittings delivered to site by a plumbers merchant will be shown in a

• job specification
• b) site plan
• c) delivery note
• d) building plan.

Which type of cold water system is normally used in a dwelling which has a high incoming water pressure?

• a) Condensing.
• b) Boosted.
• c) Direct.
• d) Indirect.

The Water Regulations require that the warning pipe in a small cold water storage cistern must be

• a) at least 28 mm diameter
• b) at least 22 mm diameter
• c) sized to be able to cope with the flow of water should the inlet valve fail
• d) fitted with a non-return valve to prevent contamination of the stored water.

What is the required soundness test pressure for a copper cold water supply pipe which has a maximum operating pressure of 4 bar?

• a) 2 bar.
• b) 4 bar.
• c) 6 bar.
• d) 8 bar.

What is the minimum recommended clip spacing distance for a 15 mm vertical copper pipe?

• a) 1000 mm.
• b) 1200 mm.
• c) 1500 mm.
• d) 1800 mm.

Which one of the following components must be sited immediately after the supply stop valve on entry to a dwelling?

• a) Service valve.
• b) Drain valve.
• c) Float operated valve.
• d) Non-return valve.

Which one of the following may be applied to cold water pipework installed in exposed conditions to minimise the risk of freezing?

• a) Trace heating.
• b) Latent heating.
• c) Sensible heating.
• d) Taper heating