scope:

This document covers the positioning of protective equipment with respect to the approach speeds of parts of the human body. This standard specifies parameters based on values for approach speeds of parts of the human body and provides a methodology to determine the minimum distances from detection zones or actuating devices of protective equipment to a hazard zone. This standard assumes that the approach of persons towards the hazard zone will be at walking speed, i.e. 1 600 mm/s and that of upper arms at 2 000 mm/s. Other types of approach, for example running or jumping, are not considered in this standard. Protective equipment considered in this standard include: . electro-sensitive protective equipment (see IEC 61496, all parts); including: . light curtains and light grids (AOPDs); . laser scanners (AOPDDRs) and two dimensional vision systems; . pressure sensitive protective equipment (see ISO 13856 series), especially pressure sensitive mats; . two-hand control devices (see ISO 13851); . interlocking guards without guard locking (see ISO 14119). This standard specifies distances from the detection zone, plane, line or point to the hazard zone for hazards caused by the moving parts of the machine (e.g. crushing, shearing, drawing-in). Protection against the risks from hazards arising from the ejection of solid or fluid materials, emissions, radiation and electricity are not covered by this standard. NOTE 1 Anthropometric data from the 5th to the 95th percentile of persons of 14 years and older are used in the determination of the value "C" in the equations. NOTE 2 If this standard is to be used for non-industrial purposes, then the designer should take into account that this data is based on industrial experience. NOTE 3 Until specific data is available for approach speeds for children, this standard uses adult speeds and lower detection factors, where relevant, to calculate the distances that could be within the reach of children. The standard does not apply to protective equipment (e.g. pendant two-hand control devices) that can be moved, without using tools, nearer to the hazard zone than the calculated minimum distance. The minimum distances derived from this standard do not apply to protective equipment used to detect the presence of persons within an area already protected by a guard or electro-sensitive protective equipment.