Maintenance Strategies govern how your Task Lists organise your Operations, and how the Operations will perform in the series. A Maintenance Strategy will contain Packages which will be allocated against an Operation.
Important
Maintenance Strategies must be configured before you can allocate/assign them to a Task List. Refer to the article on Configuring Maintenance Strategies for more information.
Assigning a Maintenance Strategy
Assigning maintenance strategies in Orien involves several steps. Let's review these in some more detail.
- Choose the appropriate item in your hierarchy, select the Packaging module and then the Task List Builder tab. You can now see all Maintenance Plans and Stand Alone Task Lists for this asset.
- Select the Task List you want to assign a Maintenance Strategy to, and then select the Edit button.
- Select the strategy type you want to use from the Maintenance Strategy drop-down, and then Save.
- The Maintenance Strategy has now been assigned to your Task List.
Packaging Maintenance Strategies
You can also assign groups of maintenance tasks (Operations) to allow optimization of the required resources. This allows you to allocate packages of Operations that will run at varying intervals, based upon your chosen Maintenance Strategy.
Note
Packages are the series of intervals within the Maintenance Strategy. Each package will define the cycle frequency to operate at. A package that has been allocated against an Operation will cause that Operation to run at that frequency.
Prior to assigning a packaged maintenance strategy, it is important to understand the difference between the most common types - suppressive packaging and sequential packaging.
Suppressive Packaging
Also known as series or suppression maintenance strategies, these are used when:
- Tasks are performed at different frequencies; AND
- The frequencies are all divisible by the higher frequency task.
This is demonstrated in the image below.
Sequential Packaging
The primary difference between suppressive and sequential maintenance strategies is in the work packages, where:
- The Tasks are performed at different frequencies; BUT
- The frequencies are NOT divisible by the higher frequency task.
As an example, the higher frequency work package tasks may be included in the lower frequency ones, but not all the lower frequency work packages align. Therefore, a suppressive maintenance strategy is not appropriate.
The figure below is an example of sequential packaging (1 week, 4 week, 6 week work packages), where the 4 week and 6 week work packages may include the 1 week package; however the 4 week and 6 week cannot be combined.
Assigning Lower Interval Operations to Higher Interval Services
Occasionally there may be Maintenance Plans that have series operations, however one discipline may not require individual operation for all frequencies.
For example, a truck has a mechanical 250HR, 500HR, 1000HR and 2000HR service. In the same Maintenance Plan there is only one 250HR hose inspection done by contractors. The solution is to add the one 250HR hose inspection to all of the 250HR, 500HR, 1000HR and 2000HR services.
This is demonstrated in the video tutorial below:
