Environmental assessment of emergency on hydro-technical utilities and within natural-production complexes

The factors determining environmental protection activity in single natural-production complex taking into account technological specificity are identified. The most important criteria for environmental assessment applied in construction and reconstruction of hydro-technical utilities are proposed. To evaluate the impact of hydro-technical utilities in design mode and emergency conditions, the economically estimated possible changes of environmental elements and environmental risks are described. The proposed hydro-ecological assessment methodology of compound technological systems allows to make effective coordinating decisions in management of complex technical objects impact to aquatic ecosystems.