|Home About News Library Contact|
|Mid-Life Metrics (Stage)
|Attributes of assets, systems or buildings
during the mid stages of their respective asset life cycle.
This is, generally speaking, the mid-point in the life of the asset when some wear and tear deterioration has occurred. This phase is therefore focused on a combination of maintenance and some periodic repairs to address emerging problems with the aging of the asset.The challenge for the owner is to ensure consistency in the maintenance program.
Mid-life period is a relative concepts. For example, a short-life asset (of say 10 years) will have a mid life stage of perhaps the years 3-6, whereas a long life asset (say 35 years) may have a mid life period of perhaps years 15-25.
Listed below are some of the key attributes of this life stage of assets:
Determining the Arrival of the Mid Life Stage
How do we know that we have arrived at the mid- life of an asset. Listed below are some of the techniques for making this determination:
The mid life is essentially established by statistical averages rather than empirical data.
Mid life metrics are necessary for the following asset management principles, policies and strategies:
Fig. The risk spectrum extending along the P-F interval to illustrate the varying strategies in the Pre-P and Pre-F periods. For example, a shift from Time-Based Maintenance (TbM) to Condition-Based Maintenance (CbM).
Fig. Decisions should consider the whole life of assets, including the I-P interval and the P-F interval.
Fig. Early life, late-life and mid-life stages of an asset reflected on the PF Curve.
Fig. Illustration of a deterioration model for a roof system with distress metrics at different life stages.
Fig. Different types of maintenance activities at various life stages of an asset.
|(c) Copyright Asset Insights, 2010-2013, All Rights Reserved. - "Insight, foresight and oversight of assets".|