Recommended strategy

• Scheduled restoration/discard: Scheduled restoration entails restoring the initial capability of an existing asset at or before a specified age limit, regardless of its apparent condition at the time. Scheduled discard or replacement tasks entail discarding an asset at or before a specified age limit, regardless of its condition at the time. • Condition-based maintenance entails checking for potential failures so that action can be taken to prevent the functional failure or to avoid the consequences of the functional failure. On-condition tasks are so called because the items that are inspected are left in service on the condition that they continue to meet specified performance standards. • Failure-finding maintenance involves checking a hidden function at regular intervals to find out whether it has failed. The intervals are calculated based on the required availability of the asset and the reliability of the protected function. • Modification/redesign is any one-time change to the equipment, training, maintenance or operating procedures, etc. • No scheduled maintenance means assets are left in service until a functional failure occurs, at which point they are repaired or replaced. • Review existing maintenance is available for secondary action plans only. This strategy alerts the analysis team to review an asset’s existing maintenance program to identify items that are no longer required. • Not specified is the default task, and it means that an action type has not been determined.

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