Microcomputers for problem diagnosis and decision support

A computerized operator 'AIDE'(Abnormal Incident Diagnosis and Evaluation Program) has been developed which can improve plant safety and reduce costly errors. Using a stand-alone micro-computer, the operator can on demand access any plant operating instruction (emergency procedure, maintenance procedure, start-up, test procedure, etc.) previously entered into computer files. Procedural sequences are displayed on a colour video screen at a workstation, and can be followed stepwise by keyboard interaction. Instructions are presented in a standard format, and can be enhanced with both explanatory and training notation. Hard copy printout of the operators' actions is provided, both as an 'AIDE' to post event analysis as well as to provide a record of the status of important pre-selected plant parameters. This system also offers advantages in both self study and simulator based training, and can simplify the administrative and logistic difficulties in controlling and using a large number of hard copy procedures. The paper describes the evolution of the program, the advantages which it offers, and the experience gained during its integration into operating generating stations