cold water 3 revision

1. What is the maximum depth a water main service pipe should be laid at?

• c. 1,350mm
• a. 500mm
• b. 900mm
• d. 2,000mm

1. Fluid category 1 represents:

a.    A serious health risk

b.    A significant health risk

c.     A slight health risk

d.    No health risk.

• b
• d
• a
• c

1. Which one of the following water pipes connects the local main to the water undertaker’s stop valve?

• c. The feed pipe
• b. The communication pipe
• d. The service pipe.
• a. The distribution pipe

1. A cold water storage cistern base must be supported:

• a. Over the whole of its base
• c. By using chipboard
• d. Over the majority of its base
• b. Over at least three bearers

1. Which one of the following back flow prevention devices must be installed on a supply to a hose union bib tap, according to the Water Regulations?

• a. AUK 2 air gap
• b. Single check valve
• d. Double check valve
• c. Fullway gate vale

1. The plastic medium density supply pipe, which is blue, is manufactured from which of the following materials?

• b. Polybutylene.

• c. PVC
• a. Polyethylene
• d. Polystyrene

1. The Water Regulations state that a mixer tap which allows the hot and cold water to mix in the body of the tap with unbalanced pressures must have:

• c. AUK 2 air gap
• b. Single check valve of both hot and cold supplies
• d. AUK 3 air gap
• a. Double check valve on both hot and cold supplies

1. What is the minimum depth a water main service should be laid?

 

• a. 1,350mm
• d. 750mm
• b. 1,150mm
• c. 950mm

1. If a hand basin has submerged taps, which one of the following back flow prevention devices does the Water Regulations say must be installed?

• a. Overflow
• b. Single check valve
• d. AUK 3 air gap
• c. Double check valve

1. Which one of the following connections to the CWSC must be screened?

• d. Cold distribution pipe
• c. Warning pipe
• b. Cold feed pipe
• a. Cold supply pipe