WorksheetsCold Water Systems LO5
Total questions: 10
Worksheet time: 7mins
Reorder the following
Visual inspection
Soundness test
Flushing out
Disinfecting
Hand over to the customer
Soundness test(Rigid pipe): Slowly fill the system, walking around the system to check for (a) . Leave the system full for (b) before attaching the test bucket. Pump the system up to (c) the working pressure and leave for (d) , there should be (e) in pressure.
What is the total time for soundness testing on TEST A for plastic pipe?
45 minutes
60 minutes
90 minutes
105 minutes
After the soundness test is complete, how long is the system disinfected for?
30 minutes
45 minutes
60 minutes
90 minutes
Bacterial growth is due to (a) of water. Legionella is dormant and comes from natural sources of water, but will become active and start to grow in water temperatures between (b) and (c) . Water that is allowed to be still is perfect for the growth at room temperature. This is one of the main reasons to ensure the system has some type of (d) .
What is the total time for soundness testing on TEST B for plastic pipe?
30 minutes
90 minutes
120 minutes
150 minutes
Scenario: You are hired to remove the customers old bathroom and replace with an updated suite. You will need to decommission the system in order to complete your work. What type of decommission would this be?
Permanent desommissioning
Induced decommissioning
Temporary decommissioning
System commissioning
On an indirect cold water system, which drain off would need to be used to drain down the system to work on a wash hand basin in the bathroom?
Drain off on the incoming mains
Drain off below the boiler
Drain off next to the hot water cylinder
Drain off on the cold water pipe next to the bathroom WC
Where would you find the details for pipework testing procedures?
BS 6635
BS 8000
BS 5412
BS 6700
The working pressure for a rigid pipework system was designed to be 5 bar. What should the test pressure be?
6.5 bar
7 bar
7.5 bar
8 bar
