1. An apparatus comprising: at least one input interface configured to receive at least one input signal associated with an asset, the asset comprising a piece of equipment; at least one processing unit operable to be pre-configured to identify a specified fault in the asset using the at least one input signal and an asset-specific model that comprises a combination of standard subsystem models, wherein the fault represents damage to the asset; and at least one output interface configured to provide an indicator identifying the fault.