The paper discusses main ideas of design principles and results of practical implementation of ICT for assessment and prediction of power plant operator fitness-for-duty. They are discussed reasons of discrepancy of operator psychophysiological opportunities to occupational requirements that can reduce his/her reliability and general fitness-for-duty. Principles of functioning of the system for a pre-shift assessment of operator fitness-for-work are settled in definite terms. The structure of the computer system is described. Results of industrial check of the system work in real-settings (fossil and hydro power plants) are discussed. The main results are: (1) very high relationship between indices of operators task performance when working with the system and indices of their professional work that were registered by the technological automatic system of the plant, (2) substantially higher accuracy of the prognosis built by the system (85-90%) in comparison with other means of an operator check known from published data (70% as the best).
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