What is the minimum requirement for the distance people must be kept away from an excavator when it is digging?

The minimum requirement for the distance people must be kept away from an excavator when it is digging is based on the operating radius of the machine. This is crucial for safety reasons, as the operating radius encompasses the area where the excavator’s boom, arm, and bucket can reach during operation. Keeping people at a distance that is equal to or greater than this radius ensures that they are outside of the reach of any potential hazards such as swinging loads, falling materials, or any machinery movements.

Understanding the operating radius is essential for preventing accidents and ensuring the safety of workers and bystanders around an excavation site. The other options do not accurately represent the most effective distance for safety in relation to the potential hazards presented by the machine's operation. By adhering to the standard that emphasizes the operating radius, employers and operators can better protect individuals in the vicinity of excavation activities.