EN 1037:1995+A1:2008

Foreword
Introduction
1 Scope
2 Normative references
3 Definitions
4 General
  4.1 Isolation and energy dissipation
  4.2 Other means to prevent unexpected [unintended] start-up
5 Devices for isolation and energy dissipation
  5.1 Devices for isolation from power supplies
  5.2 Locking [securing] devices
  5.3 Devices for stored energy dissipation or restraint
      [containment]
  5.4 Verification
6 Measures - other than isolation and energy dissipation -
  intended to prevent unexpected start-up
  6.1 Design strategy
  6.2 Measures intended to prevent accidental generation of
      start commands
  6.3 Measures intended to prevent accidental start commands
      resulting in an unexpected start-up
  6.4 Automatic monitoring of the category 2 stopped condition
Annex A (informative) Examples of tasks which can require the
        presence of persons in danger zones
Annex B (informative) Signalling, warning
Annex ZA (informative) Relationship between this European
         Standard and the Essential Requirements of EU Directive
         98/37/EC
Annex ZB (informative) Relationship between this European
         Standard and the Essential Requirements of EU Directive
         2006/42/EC
Bibliography

This standard specifies built-in safety measures aimed at preventing unexpected machine start-up (see 3.2) toallow safe human interventions in danger zones (see Annex A).This standard 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;