NEN EN 953 : 1998 + A1 2009

Foreword
0 Introduction
1 Scope
2 Normative references
3 Definitions
4 Risk assessment
5 Principle requirements for the design and
    construction of guards
    5.1 Machine aspects
    5.2 Human aspects
    5.3 Guard design aspects
    5.4 Guard construction aspects
    5.5 Selection of materials
    5.6 Containment
    5.7 Resistance to corrosion
    5.8 Resistance to micro-organisms
    5.9 Non-toxicity
    5.10 Machine viewing
    5.11 Transparency
    5.12 Stroboscopic effects
    5.13 Electrostatic properties
    5.14 Thermal stability
    5.15 Flammability
    5.16 Noise and vibration reduction
    5.17 Radiation protection
6 Selection of types of guards
    6.1 General
    6.2 Combination of different guards or of guards
          with other devices
    6.3 Selection of guards according to the number and
          location of the hazards
    6.4 Selection of guards according to the nature and
          frequency of access required
7 Additional design and construction considerations
    7.1 Climbing
    7.2 Retained fastenings
    7.3 Vibration resistance
    7.4 Warning signs
    7.5 Colour
    7.6 Aesthetics
8 Verification of the safety requirements
    8.1 General
    8.2 Impact strength
    8.3 Safety distances
    8.4 Containment
    8.5 Noise
    8.6 Guard operating forces
    8.7 Visibility
9 Information for use
    9.1 General
    9.2 Guard hazards
    9.3 Installation
    9.4 Operation
    9.5 Removal of guards
    9.6 Inspection and maintenance
Annexes
A (normative) Guidelines to assist in the selection of
    guards against hazards generated by moving parts
B (normative) Guidelines for the selection of guards
    according to the number and location of hazards
C (informative) Bibliography
ZA (informative) Clauses of this European Standard
    addressing essential requirements or other provisions
    of EU Directives

Defines general requirements for the design and construction of guards provided primarily to protect persons from mechanical hazards.