EN ISO 13857:2008 Safety of machinery - Safety distances to prevent hazard zones being reached by upper and lower limbs [Superseded: CEN EN 294, CEN EN 811]
This International Standard establishes values for safety distances in both industrial and non-industrial
environments to prevent machinery hazard zones being reached. The safety distances are appropriate for
protective structures. It also gives information about distances to impede free access by the lower limbs
(see 4.3).
This International Standard covers people of 14 years and older (the 5th percentile stature of 14 year olds is
approximately 1 400 mm). In addition, for upper limbs only, it provides information for children older than
3 years (5th percentile stature of 3 year olds is approximately 900 mm) where reaching through openings
needs to be addressed.
NOTE 1 Data for preventing lower limb access for children is not considered.
The distances apply when adequate safety can be achieved by distance alone. Because safety distances
depend on size, there will be some people of extreme dimensions who will be able to reach hazard zones
even when the requirements of this International Standard are complied with.
NOTE 2 These safety distances will not provide sufficient protection against certain hazards, for example, radiation
and emission of substances. For such hazards, additional or other measures need to be taken.
The clauses of the International Standard covering lower limbs apply when access by the upper limbs is not
foreseeable according to the risk assessment.
The safety distances are intended to protect those persons trying to reach hazard zones under the conditions
specified (see 4.1.1).
NOTE 3 This International Standard is not intended to provide measures against reaching a hazard zone by climbing
over.
EN ISO 13857:2008 Referenced Document
ISO 12100-1 Safety of machinery — Basic concepts, general principles for design — Part 1: Basic terminology, methodology — Amendment 1*， 2009-05-13 Update
EN ISO 13857:2008 history
2019EN ISO 13857:2019 Safety of machinery - Safety distances to prevent hazard zones being reached by upper and lower limbs (ISO 13857:2019)
2008EN ISO 13857:2008 Safety of machinery - Safety distances to prevent hazard zones being reached by upper and lower limbs [Superseded: CEN EN 294, CEN EN 811]
EN ISO 13857:2008 Safety of machinery - Safety distances to prevent hazard zones being reached by upper and lower limbs [Superseded: CEN EN 294, CEN EN 811] has been changed from EN 811:1996 Safety of Machinery - Safety Distances to Prevent Danger Zones Being Reached by the Lower Limbs.
EN ISO 13857:2008 Safety of machinery - Safety distances to prevent hazard zones being reached by upper and lower limbs [Superseded: CEN EN 294, CEN EN 811] has been changed from EN 294:1992 Safety of machinery; safety distances to prevent danger zones being reached by the upper limbs.