Weld polymer pipes using fusion method

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.

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• 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?

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• 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

Label this...

a

b

c

d

e

Ready-for-welding

Mains connection

Start and actuation

Welding complete

General malfunction