The permissible leakage rate for a new gas installation is:

• 0mb.

• 1mb.

• 2mb.

• 4mb.

What is the time period that must be allowed for a domestic tightness test?

• 1 min.

• 2 mins.

• 3 mins.

• 4mins.

If during the initial stages of a tightness test the meter control should be found to be passing gas, what must the gas operative do?

What equipment must be used to pin point the source of a gas escape?

• A U Tube manometer.

• An electronic gas detector.

• Diluted washing up liquid.

• Leak detector solution.

When testing a new installation with air prior to the installation of a gas supply ,it is not necessary to allow 1 minute for stabilisation:

• True.

• False

Prior to the domestic tightness test, 1 minute is allowed to check for the meter control passing gas. If this test was not carried out, the consequences could be:

• Gas may be escaping through the inlet supply.

• The gas pressure could rise within the meter.

• Gas that is escaping could be replaced from the supply.

• Gas escaping from the service would be recorded.

If when carrying out a tightness test, the readings on each side of a U gauge are 16mb and 20mb, The pressure at which the test is carried out is:

• 16mb.

• 20mb.

• 18mb.

• 36mb.