NBN EN 21992-1 : 1992

Foreword
0. Introduction
1. Scope
2. Normative references
3. Basic concepts
3.1 Machinery (machine)
3.2 Reliability of a machine
3.3 Maintainability of a machine
3.4 Safety of a machine
3.5 Hazard
3.6 Hazardous situation
3.7 Risk
3.8 Risk assessment
3.9 Hazardous machine function
3.10 Danger zone
3.11 Design of a machine
3.12 Intended use of machine
3.13 Safety functions
3.14 Automatic monitoring
3.15 Unexpected (or unintended) start-up
3.16 Failure to danger
3.17 Fail-safe condition (minimized failure to danger)
3.18 Risk reduction by design
3.19 Safeguarding
3.20 Information for use
3.21 Operator
3.22 Guard
3.23 Safety device
3.24 Deterring/impeding device
4. Description of hazards generated by machinery
4.1 General
4.2 Mechanical hazard
4.3 Electrical hazard
4.4 Thermal hazard
4.5 Hazards generated by noise
4.6 Hazards generated by vibration
4.7 Hazards generated by radiation
4.8 Hazards generated by materials and substances
4.9 Hazards generated by neglecting ergonomic principles
      in machine design
4.10 Hazard combinations
5. Strategy for selecting safety measures
5.1 Specification of the limits of the machine
5.2 Systematic assessment of hazardous situations
5.3 Removal of the hazards or limitation of the risk
5.4 Safeguarding against hazards which could not be
      avoided or sufficiently limited according to 5.3
5.5 Informing and warning users about residual hazards
5.6 Additional precautions
5.7 Remarks
6. Risk assessment
6.1 Introduction
6.2 Factors to be taken into account when assessing
      a risk
Annex A (informative) General schematic representation
        of a machine
Annex B (informative) Trilingual alphabetical index

Lays down basic terminology and specifies general design methods, to help designers and manufacturers in achieving safety in the design of machinery for professional and non-professional purposes. May also be used for other technical products having similar hazards. It is recommended that this standard is incorporated in training courses and manuals to convey basic terminology and general design methods to designers.