Everyday monitoring of the operators' psychophysiological safety

Protection of operator work is a task not only of human direct protection during work activity, but also a task of reduction of a dangerous effect of a human, who can damage not only himself, but also other people. It is necessary to mark out the geodynamic factor among a group of factors of an environment. The geodynamic factor, which does not influence the operator's state in "ordinary" days, effects in "critical" days the probability of staff errors which acts a catalyst of many processes, including causing negative reaction in organisms, increasing numbers of errors. This factor and a prediction of its affect on socio-technical systems are extremely visible in the aviation industry when an operator's error can lead to the death of many people and to great economic demands. A task performance during 2-3 minutes to predict an operator's fitness for work for the workday is an acceptable "cost" to prevent accidents.