Physiological and Hygienic Scientific Methodological Basis of the Thermal Load Assessment for Power Frequency Electric Field Personal Protective Equipment at the High-Voltage


Due to the new technologies and power networks development, the number of extremely high-voltage power frequency sources increases. These sources may affect the human nervous, cardio-vascular systems as well as vision. Maintenance, repair, and adjustment of high-voltage equipment is carried out by the electricotechnical staff. Electrotechnical staff is exposed to power frequency electric field from the switchyards and overhead transmission lines where permissible limit values are exceeded. Human health protection from the harmful power frequency electromagnetic field effects is an actual issue of the occupational safety. Staff safety work must be provided by use of the personal protective equipment from unfavorable and hazard occupational factors.

Usual personal protective equipment is the conductive suit, which includes conductive clothes, facescreen, gloves and footwear. Screening property of the personal protective equipment are based on the principle of Faraday cage, which is realized by the conductive materials. These materials and personal protective equipment need to have optimal air permeability and water vapor transmission properties. In accordance with the possible work outdoors, in the warm season especially, electrotechnical staff is exposed not only to the main harmful occupational factor, and climatic environments too, such as air temperature, its movement speed, humidity. Personal protective equipment development requires complex multifactorial assessment with special attention to the human body physical load value, his functional state, metabolic parameters, as well as suit thermal insulation.

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DOI: 10.24000/0409-2961-2022-4-53-58
Year: 2022
Issue num: April
Keywords : personal protective equipment electrical personnel power frequency electric field human thermal state human functional state hot environment
  • Perov S.Yu.
    Dr. Sci. (Biol.), Laboratory Head The Federal State Budgetary Scientific Institution «Izmerov Research Institute of Occupational Health», Moscow, Russia
  • Geregey A.M.
    Cand. Sci. (Med.), Laboratory Head, The Federal State Budgetary Scientific Institution «Izmerov Research Institute of Occupational Health», Moscow, Russia
  • Gusarova M.V.
    Junior Researcher The Federal State Budgetary Scientific Institution «Izmerov Research Institute of Occupational Health», Moscow, Russia