Who places hold cards during line maintenance?

The correct choice for who places hold cards during line maintenance is the DCC, which stands for the Dispatch Control Center. The DCC plays a critical role in coordinating line maintenance activities to ensure safety and proper communication among all personnel involved. They manage the safety protocols and ensure that appropriate measures, such as placing hold cards, are executed to prevent unauthorized access or operation of equipment while maintenance work is being carried out. Hold cards serve as a clear indication that certain lines or equipment are under maintenance and should not be engaged by other team members until the maintenance is complete, ensuring safety for all personnel on site.

In contrast, other roles such as the lineman on duty, the site manager, and the emergency response team all have specific responsibilities that do not primarily include the placement of hold cards. The lineman on duty may be focused on the physical maintenance tasks, the site manager oversees the overall operations and logistics, and the emergency response team is typically activated in crisis situations or emergencies, rather than routine maintenance operations.