What initial action must be taken before commencing machinery operations?

Before commencing machinery operations, ensuring that all personnel are clear is crucial for safety. This action helps to prevent accidents and injuries that could arise from machinery movement or operation. It is vital that no workers are in the vicinity of the machinery, as they could be at risk of being struck, caught, or otherwise harmed during operation. This initial step establishes a safe working environment and adheres to safety regulations that prioritize worker safety.

While other options like performing a physical inspection, resetting controls, or checking weather conditions are also important aspects of preparing for operation, they do not address the immediate risk to personnel. Prioritizing the safety of individuals on the job site is fundamental, making it the first and most critical action before any machinery operation begins.