Plumbing Quiz

What is the recommended procedure for applying flux to copper joints before soldering?

• Apply the flux within the fitting.

• Apply the flux on the outside of the pipe.

• Apply the flux on both the outside of the pipe and inside of fitting.

• Apply the flux to the outside of the fitting.

Which of the following situations would not be acceptable for the use of a compression fitting on gas pipework?

• Installing a compression elbow under floorboards which are to be replaced and carpeted.

• Making final connections within 150mm of a wall mounted combination boiler.

• Fitting a compression tee to pipework from the meter which is under the stairs and accessible via a door.

• Jointing pipework within a garage at low level.

Which of the following situations require the use of a temporary continuity bond?

• Testing and installation for tightness.

• Purging installation pipework.

• Fitting a tee into an existing pipe.

• Removing a gas appliance from the supply.

If corrosion protective wrapping is used to cover metallic pipework, how far past the corrosive surface must the protection extend?

• 25mm.

• 50mm.

• 75mm.

• 100mm.

When gas pipework passes through a wall, what should it always be sleeved with?

• Copper pipe one size bigger than the gas pipe.

• Steel pipe one size bigger than the gas pipe.

• The same material as the pipe and one size bigger than the gas pipe.

• A non-metallic pipe one size bigger than the gas pipe.

What is the maximum spacing between clips of a 35mm copper gas pipe installed horizontally?

• 1.5m.

• 2.0m.

• 2.5m.

• 3.0m.

What is the maximum depth of a notch in a joist?

• ¼ the depth of the joist.

• 1/8 the depth of the joist.

• 1.5 x the diameter of the pipe to be installed.

• 2 x the diameter of the pipe to be installed.

What depth should pipework be buried if installed below open ground?

• 40mm minimum.

• 375mm minimum.

• 750mm minimum.

• 1000mm minimum.

What is the minimum clearance required for gas pipework installed near electricity meters?

• 25mm.

• 40mm.

• 75mm.

• 150mm.

Before carrying out soldering of existing pipework connected to a meter, what should be carried out?

• Meter removed and capped.

• ECV turned off and labelled.

• Temporary bonding attached either side of meter.

• Pipework purged with nitrogen.