Life safety. Electromagnetic fields and their effects on humans (the most important)

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Life safety. Electromagnetic fields and their effects on humans (the most important)

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17. ELECTROMAGNETIC FIELDS AND THEIR IMPACT ON HUMANS

The spectrum of electromagnetic oscillations in frequency reaches 10²¹ Hz. Depending on the energy of photons, it is divided into the area of non-ionizing and ionizing radiation. In hygienic practice, non-ionizing radiation also include electric and magnetic fields.

Electromagnetic fields (EMF) of industrial frequency (50 Hz) include power lines, open distribution devices, including switching devices, protection and automation devices, measuring instruments. long the action of such fields leads to disorders that are expressed by complaints of headache in the temporal region, lethargy, sleep disturbance, memory loss, irritability, apathy, pain in the heart. And chronic exposure to such EMF is characterized by rhythm disturbance and slowing of the heart rate, while there are functional disorders in the central nervous and cardiovascular systems, in the composition of the blood.

The impact of an electrostatic field on a person is associated with the flow of a weak current through it. At the same time, electrical injuries are never observed, but it is worth paying attention to the fact that with a reflex reaction to current (sharp removal from a charged body), mechanical injury is possible when hitting adjacent structural elements, falling from a height, etc. The most sensitive to electrostatic field of the central nervous system, cardiovascular system, analyzers (irritability, headache, sleep disturbance, etc. are noted). In addition, there are phobias caused by fear of the expected discharge, a tendency to psychosomatic disorders with increased emotional excitability and rapid exhaustion, instability of pulse and blood pressure indicators.

EMF can be constant, pulsed, infra-low-frequency (with a frequency of up to 50 Hz), variable.

When constantly working under conditions of chronic exposure to magnetic fieldsexceeding the maximum permissible levels, dysfunctions of the nervous system, cardiovascular and respiratory systems, digestive tract, and changes in the blood picture develop. With local exposure, vegetative and trophic disorders usually develop in areas of the body that are directly exposed to magnetic fields, manifested by a feeling of itching, pallor or cyanosis of the skin, swelling and thickening of the skin, and in some cases, keratinization develops.

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