October 2012

Special Report: Process Control and Information Systems

Consider automated fault detection systems to improve facility reliability

Automated fault detection and diagnosis systems (AFDDSs) are well established in many consumer and industrial sectors.1 The conventional limit-value based (high/low alarms) fault detection and diagnos..

Szladow, A. J., REDUCT & Lobbe Technologies Inc.

Automated fault detection and diagnosis systems (AFDDSs) are well established in many consumer and industrial sectors.1 The conventional limit-value based (high/low alarms) fault detection and diagnosis systems have the advantage of simplicity and reliability. Yet, they also have a major weakness. These systems can only react to the deterioration of system conditions, and they do not provide sufficient time and information to detect and diagnose anomalous conditions proactively. Table 1 summarizes the relative advantages of AFDDS vs. standard FDDS control. This article addresses how to implement an AFDDS in a refinery, and discusses the advantages and key issues with AFDDS. AFDDS

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