Ensuring a high availability of objects in the long term is one of the most important tasks of Plant Maintenance. Preventive maintenance is a suitable instrument for avoiding system breakdowns or the breakdown of other objects, which in addition to the repair costs, often create much higher costs through the resultant breakdown in production.

This scenario describes the planning and processing of periodic maintenance tasks at technical objects. Preventive maintenance is the generic term used for inspections, maintenance and planned repair tasks, in other words, maintenance tasks that are repeated regularly.

Further reasons for preventive maintenance can include:

• Legal regulations
• Environmental requirements
• De facto regulations from customers
• Quality assurance of products manufactured at a technical system

You can use preventive maintenance to describe dates and the scope of maintenance and inspection tasks that can be planned on objects, to define the cycles for scheduling tasks based on time or performance, and to synchronize dates for several maintenance tasks on different objects.

In the Preventive Maintenance scenario, you use business functions integrated from the following R/3 application components:

The following types of maintenance plan are available:

• Maintenance plan with maintenance strategy
  In the individual maintenance packages that are maintained within the strategy, you define the concrete time or performance cycles, within which the maintenance activities should be performed.

• Single cycle plan
  No maintenance strategy is defined for single cycle plans. Here, you define exactly one time-based or performance-based maintenance cycle, in which you specify the interval at which the maintenance plan should be performed.

• Multiple counter plan
  Multiple counter plans do not have their own maintenance strategy either, but they have cycle sets. They contain a combination of time-based and performance-based cycles.

2. Scheduling

The system uses maintenance plan scheduling to generate the corresponding maintenance orders for all maintenance items affected at the due date, and suitable maintenance notifications, if required.

From maintenance planning, you can combine several notifications, which have been generated from maintenance plans, for an order, and thereby generate a worklist for planned maintenance.

You create separate maintenance plans with the maintenance call object Notification for all the planned activities within your plant. Enter a task list for the maintenance item in the maintenance plan, in which the activities to be performed are described.
The system uses maintenance plan scheduling to generate a notification for each maintenance item in a maintenance plan at the due date for the maintenance calls.
When you call up the list editing function for notifications, you can display the notifications generated and select those that should be grouped together for an order ("worklist").
You can then print this order with all its operations, process it and confirm the completed activities for the order.