Abstract:Escort is a real time expert system which relieves the cognitive load on users of information systems generating large volumes of dynamic data. Escort is currently configured to help process plant operators in centralised control rooms. The system provides advice to the operators to help them handle and avoid crises. A demonstration system advising on a simulated oil production process has been implemented. Its key features are that it operates in real time, contains four domain knowledge bases, is controlled by a knowledge based scheduler and provides dynamic advice to the operator.