WorksheetsPhase4Mod5Pipework
Total questions: 11
Worksheet time: 6mins
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:
(a)
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.
When using a blowlamp to solder a capillary fitting in situ on an existing installation that has previously contained gas, which of the following actions must be carried out?
Ventilate the property thoroughly.
Use only compression fittings.
Remove and cap the meter.
Install permanent equipotential bonding
