Iso 13857 ((link)) -

By understanding and applying the guidelines and requirements of ISO 13857, manufacturers can create safer machines and work environments, reducing the risk of accidents and injuries.

The standard covers several key aspects, including:

Here's a useful piece of information related to ISO 13857: iso 13857

You're referring to ISO 13857!

The scope of ISO 13857 includes:

: A fan with blades rotating at 1500 rpm. Guard opening is a 25 mm square mesh. Question : What is the minimum distance from the mesh to the blades?

The safety distance ( S ) is determined by: [ S = K \times T + C ] Where: Guard opening is a 25 mm square mesh

[Your Name/Department] Date: [Current Date] Reference: ISO 13857:2019(E) (latest version)

ISO 13857 specifies values for safety distances to prevent access to machinery hazard zones by the upper and lower limbs of persons aged 3 years and above. It applies where safety distances can be achieved by limiting access distances alone (i.e., without additional protective devices like light curtains). The standard ensures that a person cannot reach a moving part or other danger zone before it is safe. It applies where safety distances can be achieved

anthropometric data (human body measurements). It addresses three primary reaching scenarios: Reaching Over: How high a fence needs to be based on its distance from the hazard. Reaching Through: How far a hazard must be from a guard based on the size of the opening (slots, squares, or round holes). Reaching Under: Distances to prevent lower limb access. Key Takeaways for Engineers and Safety Managers Opening Size Matters: A slot wide enough for a finger requires a much smaller standoff distance than an opening that admits a whole arm. For example, slot openings larger than 180mm or round openings over 240mm are considered to permit full body access. The 95th Percentile: The values in the standard are selected to cover 95% of the population. However, it's worth noting that individuals with "extreme dimensions" might still be able to reach hazard zones, which is why a thorough risk assessment remains critical. Integrated Design: ISO 13857 is intended to be used with protective structures like guards or impeding devices. It is now more closely aligned with