Worksafe NZ have issued a Ban on Filling SCUBA and SCBA cylinders manufactured from aluminium alloy 6351. Check Below to see if your tanks are unsafe.
Summary: WorkSafe New Zealand considers that there are health and safety risks arising from SCUBA and SCBA cylinders manufactured from aluminium alloy 6351, and has withdrawn approval for cylinder designs which used this alloy. Testing and filling stations should not test or fill any SCUBA or SCBA cylinder made from aluminium alloy 6351 listed in the table overleaf from 31 October 2017.
Background: In 2016, there were two serious harm incidents (Sulawesi, Indonesia and Cronulla, Australia) following the catastrophic failure of SCUBA cylinders manufactured from the aluminium alloy 6351. For further information, view the WorkSafe hazard alert which was released after these incidents.
Withdrawal of cylinder design approvals: WorkSafe has, under regulation 79 of the Hazardous Substances (Compressed Gases) Regulations 2004, withdrawn approval for SCUBA and SCBA cylinder designs which used aluminium alloy 6351. This is effective from 31 October 2017 and is recorded on the Registers of Gas Cylinders. In addition, there are cylinders made from aluminium alloy 6351 which have been issued with special LAB numbers – LABxxxxSP. Any aluminium cylinder with a LABxxxxSP stamp should be checked against the table overleaf. The withdrawal of these cylinder design approvals is supported by the Cylinder Testing Laboratory Association (CTLA) and the New Zealand Underwater Association (NZUA).
Duties of testing and filling stations As a person conducting a business or undertaking (PCBU), you must ensure the health and safety of workers, and that others are not put at risk from your work. You must eliminate risks that arise from your work so far as is reasonably practicable. Testing and filling stations should not test or fill any SCUBA or SCBA cylinder made from aluminium alloy 6351 listed in the table overleaf from 31 October 2017.