TIGER With model based diagnosis: initial deployment

The TIGER system is in continuous use on over 20 gas turbines across four c ontinents, performing fault diagnosis of industrial gas turbines used for p ower generation TIGER receives several hundred data inputs at a once per se cond interval and performs several layers of fault detection and diagnosis using expert system techniques in a temporal reasoning rulebase. Development of the system has now extended for more than six years and more than 80 man-years. The diagnostics are supported by an extensive user inte rface, data archive, trending and display system. Across the 20 + current l ocations, TIGER has helped to identify and diagnose over 700 incidents repr esenting 200 different fault categories. Because of the high value of gas t urbines and the high expenses in operating them, TIGER's benefit is conside rable and has been documented at $150,000 or more for most of the locations . This paper gives a summary as TIGER is today, the benefits to many of the s ites and an overview of the recently added model based diagnosis module, Ca -En. (C) 2001 Elsevier Science B.V. All rights reserved.