11/30203207 DC : 0

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) - Example of Type 1 interlocking
                        devices
Annex B (informative) - Example of Type 2 interlocking
                        devices
Annex C (informative) - Example of Type 3 interlocking
                        devices
Annex D (informative) - Example of Type 4 interlocking
                        devices
Annex E (informative) - Example 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) - Maximum static action forces
Annex J (informative) - Evaluation of fault masking
                        serial connection of guard
                        interlocking devices with
                        potential free contacts
Annex ZA (informative) - Relationship between this
                         European Standard and the
                         Essential Requirements of
                         EU Directive 2006/42/EC
Bibliography

BS EN ISO 14119