EN ISO 14119:2013

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Operating principles and typical forms of
  interlocking devices associated with guards
5 Requirements for the design and the installation of
  interlocking devices with and without guard locking
6 Selection of an interlocking device
7 Design to minimize defeat possibilities of interlocking
  devices
8 Control requirements
9 Information for use
Annex A (informative) - Type 1 interlocking device - Examples
Annex B (informative) - Type 2 interlocking device - Examples
Annex C (informative) - Type 3 interlocking device - Example
Annex D (informative) - Type 4 interlocking devices - Examples
Annex E (informative) - Examples of other interlocking devices
Annex F (informative) - Example of guard locking devices
Annex G (informative) - Application examples of interlocking
        devices used within a safety function
Annex H (informative) - Motivation to defeat interlocking device
Annex I (informative) - Examples for maximum
        static action forces
Bibliography
Annex ZA (informative) - Relationship between
         this European Standard and the Essential
         Requirements of EU Directive 2006/42/EC

ISO 14119:2013 specifies principles for the design and selection ? independent of the nature of the energy source ? of interlocking devices associated with guards.It covers the parts of guards which actuate interlocking devices. It does not necessarily provide all the specific requirements for trapped key systems.ISO 14119:2013 provides measures to minimize defeat of interlocking devices in a reasonably foreseeable manner.