Type Examples of degradation types are age-related, non-age-related, and strategy-based. See Also Technology Technologies are the means used to examine or test equipment for signs of wear. See Also Material type The material type identifies the substance from which the equipment is made and which is subject to deterioration. See Also Theoretical yearly rate Theoretical rate is the estimated rate of deterioration based on expert opinion, equipment specifications, or historical data. It can differ from the asset design rate based on the analysts’ experience and expectations. See Also