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Deterioration

A symptom of reduced quality or strength of an asset, reflecting the loss in value and/or performance brought about by wear-and-tear, use-in-service, weathering and the action of the elements.  

Deterioration impairs the ability of the asset to perform to a specified level.  Furthermore, an asset with an existing deficiency may deteriorate at a faster rate than an asset that is in good condition. 

example of the progression of deterioration from "P" to "F" along the P-F curve
Fig. An example of the progression of deterioration from potential failure ("P") to functional failure ("F") along the P-F interval.


P-F interval illustrated with asphalt paving
Fig. The P-F interval illustrated with asphalt paving along the curve.

See also:
Types of Deterioration