Phase4Mod5Pipework

When protection against corrosion is used, the protection applied must:

• Extend at least 25mm beyond the corrosive surface.

• Extend at least 50mm beyond the corrosive surface.

• Extend at least 75mm beyond the corrosive surface.

• Extend at least 100mm beyond the corrosive surface.

A compression joint is acceptable for use on gas pipework. Which of the following situations should compression fittings be avoided?

• Within Garages.

• In Bedrooms.

• Beneath floorboards.

• Within a roof space.

Wrapping a gas pipe as it passes through a wall is acceptable as an alternative to pipe sleeving if a 55% overlap is used

• True.

• False.

No person shall install any gas installation pipework in a shaft, duct or void which is not adequately ventilated to?

• Ensure that minor gas escapes (within the permitted leakage rate) do not build up and create an unsafe situation.

• Prevent the pipework from overheating.

• Prevent the pipework from corroding.

• Allow for expansion and contraction of the pipework.

When pipework is buried beneath the ground used for pedestrian traffic, it should be buried at least:

• 275mm below the surface.

• 300mm below the surface.

• 375mm below the surface.

• 550mm below the surface.

Prior to the connection of any pipework to an existing gas installation , the gas operative must:

Excessive flux applied to pipe fittings prior to soldering may cause a partial blockage within the pipework. Which of the following is not a consequence of this fault?

• Increased pressure to appliances.

• Increased pressure loss through the fitting

• Corrosion of the pipe from inside in the future.

• Unsound joints being temporarily sealed with excess flux.

The maximum distance between 22mm light gauge copper pipe supports for internal horizontal runs is?

• 1.0m.

• 1.5m.

• 2.0m.

• 2.5m.

A temporary continuity bond should be used when:

• Testing an installation for tightness.

• Purging installation pipework.

• fitting a tee into an existing pipe section.

• Removing a gas appliance from the supply.

When pipework is to pass through the cavity of a structure, it must be:

• Constructed of medium gauge steel.

• Must Take the shortest route, be sleeved and the sleeve sealed at the inner end only.

• Be routed only in ventilated cavities.

• Pipes must never pass through Cavities.