Personnel can be classified into which two categories when working around machines?

When classifying personnel who work around machines, the correct categorization is between "Authorized" and "Affected." Authorized personnel are those who have received specific training and are given permission to operate or work on specific machinery or equipment. They are knowledgeable about the equipment and its operation, safety protocols, and emergency procedures. This level of training ensures that they can perform their tasks safely and efficiently while minimizing risks to themselves and others.

On the other hand, affected personnel are those who have tasks or roles that may be impacted by the operation of machinery but do not operate or maintain it themselves. They may not require the same level of specific training as authorized personnel, but they need to be aware of the machine's presence and the potential hazards associated with it. This distinction is crucial for safety and operational efficiency in workplaces involving machinery, as each group has defined responsibilities and levels of access to potentially hazardous environments.

The other classifications, such as "Qualified" and "Unqualified," or variations thereof, do not capture the relationship between personnel and the machines they interact with in the way that "Authorized" and "Affected" do, which is essential for safety protocols and operational clarity.