This paper presents the development of an expert system to help engineers assess the condition of turbine generators. The expert system is designed to minimize the search and input of data in order to address the issue of the limited time available to engineers compared to the large amount of information to be investigated. To imitate the imprecise reasoning process as well as the vague information and qualitative variables inherent in this type of evaluation, fuzzy logic is used. An example of application to one failure mode, i.e., loose stator bar, is also presented.

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