Gas safety

Natural gas is a very safe fuel to use. It is not poisonous, and when burnt it produces water vapour and carbon dioxide, which is the same as humans exhale in breathing.

Because natural gas is completely odourless, a distinctive artificial odour is added as a safety measure, allowing even a small leak to be easily identified and quickly dealt with.

The gas pipes are also designed for safety. Network pipes are usually made of a heavy duty yellow plastic, polyethylene, and range in size from 10mm to 100mm, depending on the gas pressure. Gas service pipes to a residential home are most commonly 10mm. These pipes are flexible and are less likely to break during earthworks or in the event of an earthquake, and are not susceptible to corrosion.

High safety standards

New Zealand has very high safety standards with which gas appliance manufacturers must comply. Appliances complying with the regulations are listed on the Gas Appliance Suppliers Association (GASA) website at www.gasa.org.nz

Many gas appliances include the following safety features:

Flame failure device

Appliances fitted with these will automatically stop the flow of gas if the flame extinguishes.

Oxygen depletion device

Most commonly fitted to home heating appliances, this device monitors the level of oxygen in the room and shuts off the heater should oxygen levels drop below a set level.

Automatic re-ignition

Mainly applicable OnGas cooking appliances, this device ensures the gas flame will relight itself if it is accidentally extinguished.

Tilt switches

Should the appliance be accidentally knocked over it will automatically shut itself off.

To ensure gas appliances work efficiently and safely, and to prolong their effective lifespan, they should be serviced every 12 months.