Guards must be used on which parts?

• A. Gears, sprockets, chains drive, head-tail, and take-up pulleys, flywheels, shafts, saw blades, fan inlets, and any moving part which may cause injury to persons
• B. Only on conveyor belts
• C. Only on electrical components
• D. Never required

Answer: (A)

Guarding moving parts is essential because any rotating or translating component can injure a worker if contact occurs. The broad list—gears, sprockets, chains, drive components, head-tail and take-up pulleys, flywheels, shafts, saw blades, and fan inlets—illustrates that guarding is required on a wide range of mechanical parts, not just a single type. The idea is to prevent direct contact, pinch points, and accidental entanglement with moving parts, and to keep workers safe during operation and maintenance.

This isn’t limited to conveyor belts, and it isn’t restricted to electrical components. Guarding is about any moving part that could cause injury, so saying never required would be incorrect.