EN ISO 14118:2018

European foreword
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 General measures to prevent unexpected start-up
5 Isolation and energy dissipation
6 Other measures to prevent unexpected start-up
7 Design requirements for verification
Annex A (informative) - Examples of tasks which can
        require the presence of persons in danger zones
Bibliography
Annex ZA (informative) - Relationship between this International
         Standard and the essential requirements of
         Directive 2006/42/EC aimed to be covered

ISO 14118:2017 specifies requirements for designed-in means aimed at preventing unexpected machine start-up (see 3.2) to allow safe human interventions in danger zones (see Annex A).ISO 14118:2017 applies to unexpected start-up from all types of energy source, i.e.:- power supply, e.g. electrical, hydraulic, pneumatic;- stored energy due to, e.g. gravity, compressed springs;- external influences, e.g. from wind.ISO 14118:2017 does not specify performance levels or safety integrity levels for safety-related parts of control systems. While available means to prevent unexpected start-up are identified, this document does not specify the means for the prevention of unexpected machine start-up for specific machines.NOTE A type-C standard can define the required means for the prevention of harm arising from unexpected start-up. Otherwise, the requirements for a specific machine need to be determined by risk assessment outside the scope of this document.