Gas testing

What does Regulation 22 specify regarding gas tightness testing?

• Requirements for gas tightness testing after work has been done on installation pipework.

• Requirements for gas tightness testing before work has been done on installation pipework.

• Requirements for gas tightness testing only in emergency situations.

• Requirements for gas tightness testing only for new installations.

According to ACOP 22(1), what should be done to all joints affected by the portion of work done?

• They should be visually inspected to ensure they have been correctly made.

• They should be painted immediately.

• They should be left uninspected.

• They should be replaced.

What could happen if paint or corrosion protection is applied to a joint before it has been tested, according to Guidance 22(1)?

• It could provide a temporary seal and falsify the test result.

• It could enhance the test result.

• It could have no effect on the test result.

• It could permanently seal the joint.

What must be done immediately after purging gas through installation pipework?

• The pipework must be sealed off at every outlet with the appropriate fitting.

• The gas supply must be turned off.

• The pipework must be painted.

• The gas must be tested for purity.

According to Regulation 22(2), what should be done if purging has been carried out through a loosened connection?

• The connection should be retested for gastightness after it has been retightened.

• The connection should be left as it is.

• The connection should be replaced immediately.

• The connection should be painted.

What is required when gas is not being supplied to any premises in which installation pipework is installed?

• No person shall permit gas to pass into the installation pipework unless purging, testing, and other specified work is carried out.

• The gas supply must be turned off.

• The pipework must be painted.

• The gas must be tested for purity.

What should be done to the supply or installation pipework if the gas supply is provided some time before installation work is done?

• It should be properly capped so that no third party can interfere with it.

• It should be painted.

• It should be left as it is.

• It should be tested for purity.

Between what pressures is a let by test completed

• 7-9mbar

• 8-10mbar

• 7-10mbar

• 10mbar

What is the maximum permissible drop on a property that has 22mm pipe with no meter and appliances connected?

• 0mbar

• 2mbar

• 4mbar

• 8mbar

If a tightness test fails, which of these should you not do?

• trace and repair the escape

• notify the owner and leave the premises

• make the installation safe

• disconnect appliances and cap any relevant open ends