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THE ENVIRONMENTAL HYGIENIC ASSESSMENT OF THE ELECTROMAGNETIC SITUATION NEAR SANITARY PROTECTION ZONE OF POWER LINES


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Abstract

The article gives the review of criteria for the assessment of an electromagnetic situation near power lines. Settlement modeling has been executed and the actual data is characterizing a condition of the electric and magnetic field in the territory near power lines of 500 kV and 220 kV. The research of the impact of the power-frequency magnetic field from power lines in the apartments on the example of the building under construction located at distance of 60 m from the power line of 500 kV is reported. Values of the magnetic flux density at the borders of sanitary-protective zones of power lines were shown to meet Russian sanitary standards. At the same time outside this zone to the adjacent residential areas, there was fixed the excess in the performance of the magnetic flux density according to the standards recommended by the World Health Organization (WHO). The measurement of the magnetic flux density on different floors of the building under construction has shown that the maxima, recognized at floors 4 and 5 (0.3 mT) are on the border of the range recommended by the WHO; in case of the recalculation of these values on a maximum load of the line an obvious excess of the indices recommended by the WHO is observed. Thus, the area of the residential development in modern conditions may actually be located in the strip residential areas with uncertain criteria of the safety assessment, respectively, the population living in such conditions, is a potential contingent for epidemiological surveys on the program of the international electromagnetic WHO project.


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