What type of maintenance involves preventive measures at scheduled intervals?

Scheduled maintenance involves the implementation of preventive measures at regular and predetermined intervals to ensure that equipment or systems function properly and remain in good working condition. This type of maintenance is designed to identify and address potential issues before they lead to significant problems or failures, thus enhancing reliability and safety.

By adhering to a schedule, technicians can systematically check and service components such as fire alarm systems, ensuring that they meet regulatory standards and operational requirements. This proactive approach helps in prolonging the lifespan of the system and minimizing unexpected disruptions in service.

In contrast, other types of maintenance like corrective maintenance are focused on repairing issues after they have occurred, emergency maintenance addresses urgent problems that demand immediate attention, and reactive maintenance occurs in response to a failure or breakdown. These approaches do not emphasize the preventive aspect that is characteristic of scheduled maintenance.