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Unit 205: Cold water systems - practice test

Description

A cold water practice exam
james crowley
Quiz by james crowley, updated more than 1 year ago
james crowley
Created by james crowley about 6 years ago
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Resource summary

Question 1

Question
When installing a new indirect cold water system, which of the following should happen, according to the Water Regulations?
Answer
  • a. One tap, normally the kitchen sink, should be drawn directly from the supply pipe
  • b. One tap, normally the kitchen sink, should have a dedicated distribution pipe from the storage cistern
  • c. Mixer taps will require double check valves
  • d. Mixer taps should never be installed due to the pressure differences

Question 2

Question
According to BS6700 and the Water Regulations, a drain off valve should be installed:
Answer
  • a. At every draw off point
  • b. At every high point in the system
  • c. At every low point in the system
  • d. Above the cold water storage cistern.

Question 3

Question
Pin holing in copper pipework is commonly caused by:
Answer
  • a. Hard water
  • b. Acidic water
  • c. Alkaline water
  • d. Pure water.

Question 4

Question
While installing pipework in a property, you are called off site to another job. What would be the correct course of action with any open-ended pipework?
Answer
  • a. Place a warning label on every open end
  • b. Cap off with a push fit fitting
  • c. Warn the customer not to interfere with any pipework
  • d. Be as quick as you can to return.

Question 5

Question
One of the major problems when leaving a dead leg in a cold water pipe is:
Answer
  • a. Electrolytic corrosion
  • b. Pitting of pipework
  • c. Reduction in water flow
  • d. Possible bacterial growth.

Question 6

Question
The use of WRAS approved fittings when installing cold water pipework is:
Answer
  • a. A legal requirement
  • b. To be corrosion resistant
  • c. To avoid contamination
  • d. All of the above.

Question 7

Question
On the completion of a new cold water installation, the system has been proven sound. What would the next course of action be?
Answer
  • a. Visual inspection with the customer
  • b. Flush the pipework out then hand over to the customer
  • c. Prepare the benchmark certificate
  • d. Hand over to the customer.

Question 8

Question
What is the most cost effective way to repair a stop valve that has the head gear jammed open?
Answer
  • a. Replace the head gear only
  • b. Replace the whole valve
  • c. Leave in position, and install a new stop valve upstream
  • d. Repack the glands around the spindle.

Question 9

Question
When decommissioning a system, the correct procedure is to:
Answer
  • a. Turn off the water quickly to save any wasted water
  • b. Drain the system down then inform the customer
  • c. Inform the customer first then drain the system
  • d. Use a pump to drain down quickly.

Question 10

Question
What is this item?
Image:
Drain Off Valve (binary/octet-stream)
Answer
  • a. Fullway gate valve
  • b. Drain off valve
  • c. Stop valve
  • d. Spherical ball valve.

Question 11

Question
What type of valve is shown in this diagram?
Image:
Fullway Gate Valve (binary/octet-stream)
Answer
  • a. Spherical ball valve
  • b. Fullway gate valve
  • c. Stop valve
  • d. Drain off valve.

Question 12

Question
When installing a new water service pipe to a property, it should normally be buried between what depths?
Answer
  • a. 135mm to 1,750mm
  • b. 350mm to 750mm
  • c. 1,350mm to 1,750mm
  • d. 750mm to 1,350mm.

Question 13

Question
Identify item C in the diagram.
Image:
Screened Vent (binary/octet-stream)
Answer
  • a. Warning pipe
  • b. Grommet for open vent
  • c. Screened vent
  • d. Inspection flap.

Question 14

Question
Which of the following materials is not allowed to be installed on new cold water systems?
Answer
  • a. Copper
  • b. Stainless steel
  • c. MDPE
  • d. Lead.

Question 15

Question
What type of valve is designed to shut off the supply of water in a cistern at a predetermined level?
Answer
  • a. Stop valve
  • b. Fullway gate valve
  • c. Float operated valve
  • d. Isolation valve.

Question 16

Question
The fluid category that offers a slight health risk to a customer is:
Answer
  • a. 1
  • b. 2
  • c. 3
  • d. 4.

Question 17

Question
The correct back flow protection device that would be installed prior to a shower mixer valve would be:
Answer
  • a. Single check valve
  • b. Double check valve
  • c. RPZ valve
  • d. Type AG air gap.

Question 18

Question
To protect category 1 water from category 3 water, what would need to be installed, according to the Water Regulations?
Answer
  • a. Single check valve
  • b. Double check valve
  • c. RPZ valve
  • d. Type AG air gap.

Question 19

Question
What would this item be used to test?
Image:
Flow Rate (binary/octet-stream)
Answer
  • a. Pressure
  • b. Category of water
  • c. Flow rate
  • d. pH valve.

Question 20

Question
If a customer’s tap is dripping, what tool can be used to correct the situation?
Answer
  • a. Club hammer
  • b. Stillsons
  • c. Bradawl
  • d. Re-seating tool.
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