WorksheetsWeld polymer pipes using fusion method
Total questions: 12
Worksheet time: 11mins
When electrofusion (socket) welding using fittings without centre stops, how do you ensure the maximum insertion depth is obtained?
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By visual inspection
Measure and use a witness mark
By trial and error
It is good practice to quickly lay and cover HDPE pipes when working in sunlight because:
It prevents the pipes from expanding and contracting.
The pipe can get sunburns
It ensures the pipes are not stolen.
It makes the installation process faster.
How does the electrofusion method create a sealed joint between a fitting and pipe?
An electrical current from an electrofusion welding machine heats coils within the pipe, melting and fusing the joint with the pipe.
An electrical current from an electrofusion welding machine heats coils within the fitting, melting and fusing the joint with the pipe.
An electrical current from an electrofusion welding machine heats oils within the fitting, melting and fusing the joint with the pipe.
When electrofusion welding, what is the name of the layer that must be removed?
Oxide layer
Protective layer
Adhesive layer
Bricklayer
What fluid is recommended for cleaning grease or oily substances from pipes and fittings before electrofusion jointing?
Water
Cleaning sauce
Detergent
Solvent-based cleansing fluid
What is the name of a mark used on a pipe to confirm that the pipe is fully inserted into the joint?
Witness mark
Alignment mark
Position mark
What voltage is required for a standard electrofusion welding machine?
110V
220V
330V
440V
If there are deep cuts and recesses in the pipe, it can be used?
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Research and state the Australian Standard that applies to installation of polyethylene pipe systems.
AS/NZS 2033
AS/NZS 3500
AS/NZS 5601
AS/NZS 3100
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What two limitations prevent the use of PVC-U materials on installations with high-temperature discharges?
Max temp 60°C
High expansion rate
It cracks
It is pathetic
The two most common on-site tests for HDPE sanitary drainage are?
Hydrostatic
Air test
Smoke
Dye
