This International Standard specifies the requirements and/or measures to eliminate the hazards or reduce the risks on the following groups of turning machines and turning centres which are defined in 3.1 and designed primarily to shape cold metal by cutting: Group 1: Manually controlled turning machines without numerical control; Group 2: Manually controlled turning machines with limited numerically controlled capability; Group 3: Numerically controlled turning machines and turning centres; Group 4: Single- or multi-spindle automatic turning machines. This International Standard covers the significant hazards listed in clause 4 and applies to ancillary devices (e.g. for workpieces, tools and work clamping devices, handling devices and chip handling equipment, etc.) which are integral to the machine. This International Standard also applies to machines which are integrated into an automatic production line or turning cell in as much as the hazards and risks arising are comparable to those of machines working separately.