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Gas installation categories

There are three types of gas installations in Tasmania:

  1. Standard gas installation
  2. Prescribed gas installation
  3. Complex gas installation

What is a Standard gas installation?

A Gas Fitting Notice (Certificate of Compliance) must be completed for a Standard Gas Installation

A Standard Gas Installation is an installation:

  • within a *class 1a residential premises containing type A gas appliances only; or
  • within a *class 2 or 4 residential premises not exceeding 3 storeys containing type A gas appliances only; or
  • with a *class 5 or 6 premises not exceeding 3 storeys containing type A gas appliances only; and
    • in which the total gas consumption of the appliance does not exceed 750 mega joules an hour and/or
    • which the length of pipe from the gas supply point to the furthest appliance does not exceed 50 metres; or
  • within a caravan, mobile home or boat containing type A gas appliances only; and
    • in which the total gas consumption of the appliance does not exceed 750 mega joules an hour and/or
    • which the length of pipe from the gas supply point to the furthest appliance does not exceed 50 metres

Note: * within the meaning of the Building Code of Australia

Class 1a: residential premises (class 1 buildings are not to be located above or below another dwelling or class of building other than a private garage)

Class 2: a building that includes more than one dwelling, each of which is generally solely occupied by one or more people to the exclusion of others

Class 4: applied to some types of accommodation with a *class 5-9 building. For example a caretakers flat with a building or accommodation over or otherwise connected to a shop

Class 5: professional chambers or suites, lawyer's offices, government offices, accountant’s offices

Class 6: a building where goods or services are directly sold to the public. For example a service station, restaurant or shop

Note: The gas-fitter must complete a Certificate of Compliance (Gas Fitting Notice (GFN)). This certifies that the standard gas installation has been carried out in accordance with any relevant standard. You must provide the signed white copy of the Certificate of Compliance to the Director of Gas Safety within 48 hours of undertaking the work, and subsequent copies to the relevant persons.

What is a Prescribed installation?

A Gas Fitting Notice (Statement of Compliance) must be completed for a Prescribed Standard Gas Installation which requires an Application for Acceptance - form TBA003

A Prescribed standard gas installation is an installation:

  • within a *class 2 or *class 4 building exceeding 3 storeys; or
  • excluding class *1a, buildings with more than one meter where the meters are located in a common area

Note: * within the meaning of the Building Code of Australia

Class 1a: residential premises (class 1 buildings are not to be located above or below another dwelling or class of building other than a private garage)

Class 2: a building that includes more than one dwelling, each of which is generally solely occupied by one or more people to the exclusion of others

Class 4: applies to some types of accommodation within a *class 5-9 building. For example a caretakers flat within a building or accommodation over or otherwise connected to a shop

The Gas-fitter must complete the following:

  • An Application for Acceptance before commissioning
  • Installations marked with an asterisk (*) require an Application to the Director of Gas Safety for Acceptance before commissioning. Follow all instructions. Attach the yellow (unsigned) copy of the Gas Fitting Notice to the application and submit to Gas Standards and Safety a minimum of fourteen (14) days prior to commissioning.
  • The Statement of Compliance declares that work on the accepted installation has been carried out in accordance with any relevant standard or condition specified in the Acceptance. You must submit the signed white copy of the Statement of Compliance to the Director of Gas Safety within 48 hours of undertaking the work, and subsequent copies to the relevant persons.

What is a Complex gas installation?

A Gas Fitting Notice (Statement of Compliance) must be completed for a Complex Gas Installation which requires an Application for Acceptance - form TBA006

A Complex Gas Installation is an installation:

  • within a *class 5 & 6 premises
    • in which the total gas consumption of the appliances exceed 750 megajoules an hour; and/or
    • in which the length of pipe from the gas supply point to the furthest appliance exceeds 50 metres; and/or
    • if the *class 5 & 6 building exceeds 3 storeys; and
  • within a caravan, mobile home or boat
    • in which the total gas consumption of the appliances exceed 750 megajoules an hour; and/or
    • in which the length of pipe from the gas supply point to the furthest appliance exceeds 50 metres; and
  • within any *class 1b, 7, 8, 9 or 10 building; and
  • any installation containing a Type B appliance

Note: * within the meaning of the Building Code of Australia

Class 1b: a small guesthouse, boarding house or similar

Class 3: a building providing accommodation for unrelated people

Class 5: professional chambers or suites, lawyer's offices, government offices, accountant offices

Class 6: a building where goods or services are directly sold to the public for example a service station, restaurant, shop

Class 7: car park, warehouse or building used for the display of goods or produce for sale by wholesale

Class 8: factories, laboratories, buildings used for altering or repairing, potteries, food manufacture (except restaurants, which are class 6) or buildings used for the packing of produce

Class 9: healthcare buildings, assembly buildings for example theatres, halls, schools, child care centres, sports complex or bus/railway stations, day surgeries

Class 10: non-habitable building

What is a Certificate of Compliance?

Certificate of Compliance for gas-fitting work is known as a Gas Fitting Notice (GFN); which is a form approved by the Director and must be signed by the gas-fitter who carried out the work on a Standard gas installation. You must submit the signed white copy of the Certificate of Compliance (GFN) to the Director of Gas Safety within 48 hours of installation commissioning, and subsequent copies to the relevant persons.

What is a Statement of Compliance?

Statement of Compliance for gas-fitting work is known as a Gas Fitting Notice (GFN); which is a form approved by the Director and must be signed by the gas-fitter who carried out the work on a Prescribed Standard or Complex gas installation. You must submit the signed white copy of the Statement of Compliance (GFN) to the Director of Gas Safety upon inspection or within 48 hours of installation commissioning, and subsequent copies to the relevant persons.

Updated: 10 Jun 2021

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