Turbine Vibration Diagnosis Turbine Vibration Diagnosis Verein Deutscher Ingenieure of Germany evaluated diagnosis and maintenance support for large steam turbines, one of the main elements in power plants. GmbH in Germany has developed a diagnostic expert system for turbine vibra- tions. When all necessary values such as rotation speed are entered, the system starts inference during plant operation and shows possible steps toward trouble correction. The system, for example, determines whether a turbine blade is missing, or whether a bearing is defective.
Permanent monitoring allows the direct detection of problem sources.
Another advantage of early error identification is the prevention of significant secondary damage. The inference mechanism employs a constraint propagation sytem, which is suitable for diagnosis.