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|Run to Failure (RTF)
is a maintenance
strategy or replacement
policy, which is sometimes also called “Fit and Forget”.
An intentional strategy whereby no maintenance tasks are
performed on an asset.
The only "planned
maintenance" on the asset is corrective maintenance
after the asset has suffered a failure.
This is a very common approach to the maintenance of components which have the following attributes:
Listed below are some of the variations on RTF:
Some assets may be valid candidates for an RTF strategy, particularly if the asset is:
The following assets may sometimes fall into this category:
Evaluation and Management Principles
This approach is best suited to an owner group with the following attributes:
Fig. Asset replacement policies must align to asset risk profiles in order to achieve optimization and satisfy ISO 55001 requirements.
Fig. A balanced asset replacement mix helps the organization to achieve optimization in conformity with ISO 55001 principles.
Fig. Run to Failure (RTF) amongst the network of alternative asset replacement policies.
Fig. Run to Failure (RTF) is one of the four principal maintenance philosophies.
Fig. The P-F interval illustrated with asphalt paving along the curve.
Fig. Illustration of a deterioration model for a roof system with distress metrics at different life stages.
Fig. Map of various asset replacement strategies.
Fig. I. Care is attempting to slow down or reserve the sands of time so that he can undo the deferred maintenance. A futile but valiant attempt.
Fig. Recirculating pumps are sometimes a suitable candidate for a run to failure approach.
Fig. Blistering in a polyurethane roof assembly.
Fig. I. Care spins the wheel of misfortune to determine the consequences of deferred maintenance.
Fig. Decision tree on RTF.
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