EnergySafe Magazine Summer 2019, issue 56 - Page 15

esv.vic.gov.au New cylinder valve to launch in 2020 By Jason Treseder, Senior Gas Engineer A new, safer LPG cylinder connection will be available in Australia in 2020. The existing Type 21 POL design of LPG cylinder valve connections will be modified to the CGA 791 Quick Connect Coupling (QCC) on leisure LPG cylinders. These smaller cylinders range from 3kg to 9kg and are commonly used with portable gas appliances like barbecues and patio heaters. Larger cylinders will not be affected by the upcoming change. The current Type 21 cylinder valve outlet connection has been the default LPG cylinder connection for many years. However, a number of incidents involving the cylinder valve connection, including the tragic death of a man in Footscray where leaking cylinders exploded during transport, convinced regulators the Type 21 connection was no longer suitable for leisure use. The QCC connection has a number of safety advantages over the current Type 21 connection, listed below. » The cylinder valve incorporates a check valve that will only enable gas to flow when a gas- tight connection is made. This will reduce the risk of high- pressure gas escaping if the cylinder valve is opened during transportation or disconnected during use. » The connection is a large diameter right-handed thread and able to be operated without the use of tools. » Perishable rubber seals are located within the body of the gas valve. This means they can be assessed by a competent assessor as part of the refilling process, and replaced with the cylinder valve every 10 years, as part of the cylinder test process. » The connection incorporates a thermal fuse that will cause the internal check valve to close and shut off gas flow in the event the connection is exposed to a fire. » The new connection is readily available and used internationally, in the USA and New Zealand. » The QCC valve is compatible with existing appliances that use the Type 21 connection, which will assist in the transition process. The next stage will involve the supply of all new appliances with a QCC hose connection, requiring a cylinder with a QCC cylinder valve. In time, all leisure cylinders and associated gas appliances will be operating with a QCC connection. Leisure LPG cylinders have a 10-year test cycle and it is expected a full transition to QCC cylinders will be achieved within a 10-year time-frame. Further details will be provided by ESV once transition timing is finalised. The additional safety features of the QCC cylinder connection are expected to significantly reduce the number of incidents and injuries involving leisure LPG cylinders. The cylinder connection is mandated through Australian Standards, which means introducing a new connection design. This will involve changing the standards in a coordinated sequence to ensure the transition minimises the impact on current cylinder owners. The transition will start with the progressive introduction of cylinders with a QCC cylinder valve. The QCC valve is compatible with both QCC hose connections and the Type 21 hose connections. This means owners of existing appliances will not need to do anything when the new cylinder valves arrive. 15