Project: Sulphur Hexafluoride (SF6) Recycling Project
GAS, chemicals and equipment provider BOC, a member of the Linde Group, supplies Sulphur Hexafluoride (SF6) in cylinder format throughout Australia and the South Pacific.
SF6 is used for electrical insulation of transmission and distribution equipment. SF6 is a potent greenhouse gas (one kilogram of SF6 is the equivalent of 23,900kg of CO2) and it persists in the atmosphere for up to 50,000 years. Therefore every kilogram that is not released into the environment makes a huge saving.
Through the installation of a SF6 recycling plant at its Sydney Operations Centre in Wetherill Park, BOC now provides a highly specialised new recycling service for users of SF6 cylinders.
Customers can return their SF66 cylinders to BOC for recovery and recycling rather than releasing their old gas into the atmosphere. The recovered material is of such a high quality that it can be returned to market, thus avoiding further production environmental impacts.
By allowing customers to safely return their used SF6 cylinders for recycling, BOC has been able to reduce the amount of SF6 imported and manufactured by 15,000kg — which is a saving of the equivalent of 385,500 tonnes of greenhouse gases being released into the atmosphere.
BOC estimates that the programme generated direct savings approaching $1,800,000 in its first part year of operations. This saving is a result a number of factors, but particularly through reduced purchases of virgin material and the ability to release more than 800 cylinders back into active traffic.