What is a “safety rail” in the context of machine guarding?

A safety rail serves as a critical component in machine guarding by acting as a barrier to prevent personnel from accessing hazardous areas around a machine. Its primary function is to safeguard workers from potential injuries that could result from coming too close to moving parts, sharp edges, or other dangerous areas associated with machinery. By clearly delineating safe zones and restricting access to these hazardous regions, safety rails play a vital role in maintaining a safe working environment.

The other options refer to tools, personal protective equipment, or instructional materials that, while important in their own right, do not fulfill the specific protective function that a safety rail does in relation to machine guarding. Understanding this context emphasizes the importance of physical barriers in enhancing workplace safety.