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|Maintenance-to-Repair Ratio (MRR)
|The aggregated amount spent on preserving
an asset, through major maintenance
maintenance tasks, over the useful service life of the asset, compared to cost to repair..
Listed below are some conceptual examples of the MRR applied to different assets:
Listed below are some of the key applications of the MRR to the field of asset management:
Listed below are some of the key steps in calculating the MRR for an sample asset:
High, Medium and Low Ratios
Listed below are the attributes and examples of assets with different MRR:
A. High MRR
C. Low MRR
MtR at different life stages
The MRR is a useful tool for the following asset management applications:
To assist with comparison of the following loads:
Fig. Comparing the Maintenance-Repair-Renewal (MRR) trade-offs at different organizations. As maintenance quality and effort increases so too does the frequency and scope of repairs decrease - however, there is a point of diminishing returns. Do you know where your balance is?
Fig. Alignment between Maintenance, Repairs and Renewals will help the organization find the optimal MRR ratio.
Fig. Making inevitable trade-offs and finding consensus with different stakeholder groups.
Fig. Activity correlation of maintenance, repairs and renewals.
Fig. Cost correlations of maintenance, repairs and renewals.
Fig. Curve indicating the impact of maintenance on the service life of assets.
Fig. Maintenance significance represented on a calendar timeline.
Fig. Correlation of maintenance costs to repair costs for three types of maintenance strategies.
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