Creating Work Load

Maintenance orders can be created in the following ways:

• Manually, f.ex. as a breakdown or planned order
• By a maintenance plan within preventive maintenance

Both manually created orders and orders which are called from a maintenance plan as well as the planned dates can be considered in Resource Scheduling (see also lesson Checking Work Center Utilization).

Resource Scheduling supports both standard orders (see scope Item Corrective Maintenance (BH1) as well as phase-based orders (see scope items 4HI, 4HH, 4VT and 4WM).

If you use phase-based orders you can display fields such as phase or subphase in the apps of Resource Scheduling.

Usually the work to be carried out is planned in the form of operations. Operations have a number, an executing work center, a control key - as well a work and a duration.

The amount of work assigned to an operation is used to calculate the work load of a work center. This work load can be visualized in Resource Scheduling.

The duration assigned to an operation is used in order scheduling to determine when the operation has to start and when it ends.

The Work expected, the Duration and the Required Capacities within an operation are linked via the Calculation Key. In many cases the standard value is 1 - which means that duration is calculated automatically based on the work and the required capacities (i.e. number of persons). However, there are other values available, f.ex. you can specify the duration manually independently of the work and the required capacities.

Make sure you set meaningful values for work and duration by using the adequate calculation key. These values will be used by Resource Scheduling to calculate work center utilization and to schedule your orders.

This screen shows the earliest and latest start and end dates and times as well as the confirmed actual work.

During order scheduling the start and end dates for operations are usually calculated automatically based on the basic start date of the order, the operation number, any implicit or explicit relationships (see concept relationships) and the duration of the operation.

In addition, you can use constraints to exactly define the start or end of an operation, f.ex. that an operation Must Start on a certain day at a certain time.

Constraints are also handled by Resource Scheduling.

This view contains the assigned employees as capacity splits of the operation. It will be used by the Assign People function in the Maintenance Scheduling Board. It can also be used for manual entries in SAP GUI to split the operation among several employees from a capacity point of view.

This view is different from the Person Responsible of the operation.

An operation can consist of various suboperations, that is, a task can be split up in various sub-tasks, which then can be assigned to different Work Centers. Suboperations can be defined for the same operation number (for example, operation 0010 0010, operation 0010 0020, operation 0010 0030).

Suboperations have a limited functionality in comparison to (main) operations.

• … its own Work Center
• … its own field Work- to split work of main operation
• … its own view Requirements - to enter people for split work of main operation
• … no independent Duration and start/end dates
• … no Material Assignment
• … no Actual Costs (OLC orders)