Models, knowledge and experience for control of technogenic safety

General principles, approaches, methods of investigation have been formulated and control actions directed to provision of technogenic safety have been determined. Considered are accidents and technogenic extreme situations, which are conditioned by destruction or depressurization of unique mechanical systems inside technological complexes exploited for the processes running under extreme values of technological parameters of hazardous agents. Some issues related to investigation and control of the states of technological complexes and unique mechanical systems inside them are discussed.