The Australian Standards provide information on machinery and equipment safety systems and reflect the current state of knowledge and best practice. The AS4024 Safety of Machinery series of publications provides specific information for commonly used machine types in industry, such as woodworking or metalworking machinery.
High integrity/fail-safe control. All safety control systems should be designed and built to prevent failure or, in the event of failure, de-activate the operation of the machinery and equipment. The extent to which a safety control system should tolerate faults is a function of risk (likelihood and consequence), and is described fully in AS4024.1501 Safety Related Parts of Control Systems, which explains the categories of control required as a function of increasing risk.
People performing tasks, such as maintenance, repair, installation, service and cleaning, are highly vulnerable, and have a higher risk of being killed or maimed through inadvertent operation of machinery and equipment they are working in, on or around.
Simultaneous two-handed operation. Where a machine has only one operator, the use of simultaneous two-handed operation buttons can serve as a risk control. This ensures that operation of the hazardous mechanism cannot occur until both hands are clear of the danger area.