This part of IEC 61069 (formerly IEC 1069) deals with the method which should be used to assess the system property safety of industrial-process measurement and control systems. The treatment of safety in this standard is confined to hazards that can be present within the industrial-process measurement and control system itself. If the system mission includes activities which could affect the safety of the process or equipment under control, the requirements of these activities are the subject of IEC 61508.