AS/NZS5601.1 was last revised in 2013 with the publication of 4 amendments to the standard since that time. The standard is now due for a full revision, and a draft for public comment has been published by Standards Australia. The draft can be accessed at via Standards Connect. Public comments on the draft will be accepted up to Thursday, 10 June 2021. The current project to revise the standard includes a gap analysis of all performance-based requirements against the means of compliance. Additionally, a number of significant changes are proposed, including:
- Clarification that the standard does not apply to the repair of existing gas installations (including the repair of gas appliances) but does apply to modifications of existing installations.
- New definition for an “ignition source”, “open flued appliance”, “fire safety system”, “semi-rigid connector”, “under-pressure shut-off device”. Prohibition on the use of flexible flue liners for applications other than within chimneys.
- Brazing prohibited within 1 m of a joint with non-metallic components.
- Prohibition on the installation of multilayer pipe above-ground external to buildings.
- Provision of emergency isolation for buildings with multilayer pipe for fire protection.
- Clarification on required ventilation where more than one gas meter is installed in an enclosure.
- Increased clearance requirement between domestic cooking appliances and range hoods to align with the international rangehood standard IEC 60335 2 31.
- Prohibition on the use of semi-rigid connectors in the installation of commercial catering equipment.
- New requirements for the protection of combustible surfaces adjacent to commercial catering equipment.
- New pipe sizing graphs and tables based upon the Churchill friction factor equation which will allow for greater flow capacities for complex gas installations where large pipe diameters and longer pipe runs exist.
- Information on the effect of altitude on gas supply pressure for high-rise building installations.
- New requirements and drawings for the location of flue terminals under a covered area, in a recess, or on a balcony.
- New requirement for the isolation of installations in educational institutions.
- New requirements for freestanding commercial catering equipment with under-equipment connection.
- New requirements for the connection of freestanding commercial catering equipment using a hose assembly.
Reviewed 14 December 2022