An RPZ valve should be installed with:

• an isolating valve upstream of the RPZ valve

• an isolating valve downstream of the RPZ valve

• an isolating valve both upstream and downstream of the RPZ valve

• no isolating valves

In which one of the following fluid categories does the domestic water from a washbasin fall?

• Category 1

• Category 2

• Category 3

• Category 4

Under Regulation 5 of the Water Regulations, the water undertaker must be informed when which one of the following operations is carried out?

• Installation of a pump drawing more than 12 litres per minute

• Installation of a bidet without an ascending spray or flexible hose

• Installation of a bath with a capacity of fewer than 230 litres

• Installation of an RPZ valve to protect against a category 2 fluid

The type of non-mechanical backflow prevention used on a domestic washbasin is known as:

• AUK 1

• AUK 2

• AUK 3

• AUK 4

Which of the following items of legislation covers the requirements for the hydraulic testing of cold water pipe lines?

• Water Byelaws (England 2004)

• British Standards 5449

• Water Supply (Water Fittings) Regulations 1999

• Building Regulations Part G (P in Northern Ireland)

Which one of the following mechanical backflow prevention devices would be used when installing a replacement hose union bib tap?

• BA

• HUK1

• HA

• HC

Which one of the following types of air gap provides suitable backflow protection for the taps in a washbasin installed in a hospital?

• AB air gap

• AUK 1 air gap

• AUK 2 air gap

• AUK 3 air gap

Service valves should be installed in which one of the following locations?

• On the cold feed to the primary circuit

• On the cold feed pipe from the cold water storage cistern

• Immediately after the internal stop valve

• Immediately after the external stop valve

Metallic cold water systems should be capable of withstanding an internal pressure of:

• the maximum potential operating pressure

• 1.5 times the maximum potential operating pressure

• 2 times the maximum potential operating pressure

• 3 times the maximum potential operating pressure

When preparing to disinfect a cold water system within an occupied block of flats, what should be placed at each outlet?

• A contact number for the plumber

• Warning notices

• Neutralising agents

• Residual chlorine test kits