OREANDA-NEWS. September 15, 2011. JSC "IDGC North-West," analyzed the causes of technological failures for the first half of 2011. A significant number of violations occurred as a result of natural phenomena. In the structure of violations the mechanical damages amounted to 47%, the aging of insulation - 17%, atmospheric overloading - 5% above the calculated wind speed - 2%, and other atmospheric effects - 13%.
Most of the technological failures were caused by the damaging of power lines.

Among the factors contributing to the growth of technological breakdowns, experts of IDGC North-West underline the bad condition of the overhead lines 0.4 / 6/10/35/110 kV on wooden poles, taken to the balance from the consumers in poor condition and a considerable amount of equipment in operation for over 25-40 years. Among the risk factors – providing electric power by the single-circuit overhead lines.
Technological defects lead to lost energy. The reduction of lost energy is achieved by promptness of action of the company's personnel and prevention activities.