Which of the following actions should be taken before working on controls that may disrupt plant operations?

Performing a safety briefing is essential before working on controls that could disrupt plant operations because it ensures that everyone involved is aware of the potential hazards and operational impacts of the work being conducted. This process brings together all relevant staff to discuss the scope of the work, identify risks, and outline emergency procedures. A safety briefing fosters communication, enhances safety awareness, and ensures that all team members understand their roles and responsibilities. This is particularly crucial in environments where operational continuity is vital, as disruptions can lead to safety incidents, equipment damage, or financial losses.

Having an operator present, ensuring tools are organized, and notifying the maintenance manager are all important actions, but they do not directly address the need for specific safety communication and consensus building that is achieved through a safety briefing. While these actions contribute to effective and safe work practices, they do not encompass the comprehensive risk management and planning that a safety briefing facilitates, which is particularly important in high-stakes operational environments.