Canada Adopts ISO 13857 – Safety Distances

Safety Distances

ISO 13857 2008, Figure 2 - Safety Distance for reaching over a protective structure
ISO 13857 2008, Figure 2 – Reaching Over Protective Structure

As part of the work on the 3rd Edition of CSA Z432, Canada has decided to adopt ISO 13857 as CSA Z13857. The stand­ard is to be adop­ted without tech­nic­al devi­ations.

Why ISO 13857?

CSA Z432 has long had por­tions of the inform­a­tion in ISO 13857 in its annexes – Annex C has tables for reach­ing through open­ings and reach­ing over struc­tures, much like the one above, that users have found use­ful over the years. Unfortunately, these tables have also proved a bit con­fus­ing, as they are some­what dif­fer­ent than CSA Z432 Table 3. While neither set of safe-​distance val­ues is less safe, the val­ues in Table 3 are very sim­il­ar to those used in the USA, which was the ori­gin­al source for that inform­a­tion.

When Z432 was first being developed in the late 1980’s, most machinery was com­ing in from the US, so har­mon­isa­tion with US OSHA guidelines was more import­ant than har­mon­ising inter­na­tion­ally. Today, import of machinery from the EU is com­mon, and Canadian export of machinery around the world is part of doing busi­ness. CSA’s Safety of Machinery Technical Committee decided to help man­u­fac­tur­ers and import­ers by har­mon­ising Canada’s stand­ards with the International Standards by adopt­ing ISO 13857 as a Canadian Standard.

Public Review

If you are inter­ested in review­ing and  com­ment­ing on this adop­tion, please vis­it the CSA Public Review Page for the stand­ard. Comments close 13/​07/​2015.


Identifier: Z13857

Title: Safety of machinery — Safety dis­tances to pre­vent haz­ard zones being reached by upper and lower limbs (Adoption without devi­ations) (New Standard) Expiry date: 13/​07/​2015

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).