A further technical bulletin with detailed information about the Type 27 cylinder valve introduction will be published in due course. These appear in AS/NZS 5601.2:2020 as references to cylinder quick-connect devices. The basic concept of the vapour barriers are shown in these diagrams.Īnother significant new addition to this standard are changes to allow the introduction of Type 27 valves to LPG cylinders. In recognition that openable compartments typically in use in current industry products are likely to be significantly affected by the new controlled area application, Caravan Industry Association of Australia in collaboration with its member State Associations commissioned a gas flow modelling project to identify vapour barriers that could be used to shield openable compartments that would otherwise sit within the controlled area. This is a recommended solution for current model vehicles with openable compartments in close proximity to gas cylinders. Vapour barriers can be used to shield vulnerable areas from exposure to leaking gas, acting to separate gas concentrations from possible ignition sources. These are key to correctly understanding and applying the controlled area restrictionsĪ new inclusion in the standard allows the use of a vapour barrier as an acceptable technical solution to limit (reduce) the size of the controlled area. The standard introduces new definitions to support and clarify the controlled area requirements. This may affect compartments such as front boots, equipment boxes or similar that contain electrical equipment or appliances, or make provision for their later addition by consumers.
The controlled area will apply to compartments that can be opened to expose ignition sources within the envelope of the controlled area.There are clauses in the standard detailing the requirements for adequate encapsulation. Electrical equipment that is fully encapsulated can be located within the zone providing it meets strict conditions to ensure there is no potential for ignition.trailer plugs, ESC equipment, break-away brake controllers) In particular, this allows essential functional and road safety equipment within the controlled area (e.g. Some equipment is deemed NOT to be an ignition source.Reduced size & shape at the base of the cone.This is a similar concept to the cone-shaped hazardous zone in the previous version of this standard, but with some significant modifications such as: The most significant change in this revised standard is the introduction of a “controlled area” around gas cylinders and cylinder compartments on domestic caravans (and similar Recreational Vehicles), which is an exclusion area for any ignition sources that could present a risk of explosion in the event of a gas leak.Licenced Gasfitters, Vehicle Designers etc.) within your business are up-to-date with these changes. It is also important to ensure that the relevant personnel (e.g. It is strongly recommended that industry businesses make their own investigations and explore the changes to AS/NZS 56 with regard to the Recreational Vehicles they are producing. It is important to note that this overview does not provide an exhaustive list of changes and is provided as general guidance and information based on our understanding of the gas standard requirements.
Below is the KEY CHANGES SUMMARY released 1st October 2020 The dates when the new Standard will be implemented vary depending on each individual State, and the national body and each state association will look to jointly provide further information relating to the changes and what you need to know leading into the implementation date in each state. Failure to do this may lead to your gas installer not being able to certify the gas installation. This is a key installation standard for Caravans and Recreational Vehicles and covers LP gas Installations in caravans and boats for non-propulsive purposes.įor DIY customers who intend to have ANY LP Gas appliances installed, the law requires this work to be carried out and certified by a licensed LP Gas Installer.Īs the vehicle designer, customers would be well advised to make sure they themselves and their gas installer are up to date with these changes.
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