Safety Trained Supervisor (STS) 2025 – 400 Free Practice Questions to Pass the Exam

The category that includes components such as shaft ends and meshing gears is related to rotating motions. This category encompasses hazards that arise from the movement of mechanical parts, which can pose a serious risk of injury if not properly safeguarded.

Rotating motions can lead to entanglement or crushing injuries if workers come into contact with moving components like gears or shafts that are in operation. Understanding this hazard category is critical for implementing appropriate safety measures, such as guards or safety devices, to protect workers from these potential dangers. By recognizing and addressing the risks associated with rotating motions, supervisors can create a safer work environment, preventing accidents and ensuring compliance with safety regulations.

In this context, electrical hazards would pertain to risks involving electrical shock or equipment, biological hazards focus on exposure to harmful biological agents, and chemical hazards are related to toxic substances. None of these categories directly address the risks associated with mechanical components that rotate, making rotating motions the most relevant choice.