have a look at this
http://www.alexhughes.bravehost.com/...safetycode.pdf
1.2 Elevated Work Platforms (EWPs)
“Elevated work platforms” include self-elevating work platforms (SEWPs) such as Cougars, Genie Lifts, Maxi-lifts,
Scissor Lifts, as well as Tallescopes, lighting and sound bridges, balconies,
etc.
· Equipment must be appropriate to the job and used in accordance with specifications and Australian Standards,
in particular:
o use the most appropriate EWP for the job;
o only operators competent in the use of the particular equipment may use it;
o use equipment in accordance with the manufacturer’s specifications;
o if equipment is modified, appropriate risk assessment must be undertaken and an engineer’s certificate
obtained.
· Safe working practices must be used with all EWPs, including:
o never exceed the safe working load for the EWP;
o maintain each EWP in good working order and inspect it daily;