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Hazards to persons from electromagnetic fields. Gefaehrdung von Personen durch elektromagnetische Felder

Abstract

The concept deals with the biophysical bases that led to the limit values given in VDE regulation 0848/2 (draft 2 with supplement A1) for the protection of persons against damage from electromagnetic fields for frequencies between 10 kHz and 3000 GHz. Two different concepts for the determination of the limits are applied and substantiated: - protection from direct excitation of nerve cells by electromagnetic fields, - protection from dangers arising from the thermal effects of electromagnetic fields. For frequencies below 30 kHz, the measure of the biologic effect is the electric current density produced in the body. The threshold values for the current density capable of stimulating nerve cells are known. The limits which are laid down for the electric and magnetic field strengths outside the body remain at least 20 times below the stimulation threshold values for the body electric current density. The concept described here can be used for frequencies below 10 kHz as well. For frequencies above 2 MHz the measure of the tolerable heat quantity, produced in this case by the effect of electromagnetic fields in the human body, is determined by comparison with the basal metabolism of the body. The limit values, which are laid  More>>
Publication Date:
Jan 01, 1983
Product Type:
Book
Reference Number:
EDB-84-077562
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; ELECTROMAGNETIC FIELDS; HEALTH HAZARDS; BIOPHYSICS; BODY; ELECTRIC CURRENTS; ELECTRIC FIELDS; GHZ RANGE; KHZ RANGE; MAGNETIC FIELDS; MAN; NERVE CELLS; SAFETY STANDARDS; STIMULATION; TEMPERATURE EFFECTS; ANIMAL CELLS; ANIMALS; CURRENTS; FREQUENCY RANGE; HAZARDS; MAMMALS; PRIMATES; SOMATIC CELLS; STANDARDS; VERTEBRATES; 560400* - Other Environmental Pollutant Effects
OSTI ID:
5009466
Country of Origin:
Germany
Language:
German
Submitting Site:
HEDB
Size:
Pages: 38
Announcement Date:
Mar 01, 1984

Citation Formats

Bernhardt, J H, Dahme, M, and Rothe, F K. Hazards to persons from electromagnetic fields. Gefaehrdung von Personen durch elektromagnetische Felder. Germany: N. p., 1983. Web.
Bernhardt, J H, Dahme, M, & Rothe, F K. Hazards to persons from electromagnetic fields. Gefaehrdung von Personen durch elektromagnetische Felder. Germany.
Bernhardt, J H, Dahme, M, and Rothe, F K. 1983. "Hazards to persons from electromagnetic fields. Gefaehrdung von Personen durch elektromagnetische Felder." Germany.
@misc{etde_5009466,
title = {Hazards to persons from electromagnetic fields. Gefaehrdung von Personen durch elektromagnetische Felder}
author = {Bernhardt, J H, Dahme, M, and Rothe, F K}
abstractNote = {The concept deals with the biophysical bases that led to the limit values given in VDE regulation 0848/2 (draft 2 with supplement A1) for the protection of persons against damage from electromagnetic fields for frequencies between 10 kHz and 3000 GHz. Two different concepts for the determination of the limits are applied and substantiated: - protection from direct excitation of nerve cells by electromagnetic fields, - protection from dangers arising from the thermal effects of electromagnetic fields. For frequencies below 30 kHz, the measure of the biologic effect is the electric current density produced in the body. The threshold values for the current density capable of stimulating nerve cells are known. The limits which are laid down for the electric and magnetic field strengths outside the body remain at least 20 times below the stimulation threshold values for the body electric current density. The concept described here can be used for frequencies below 10 kHz as well. For frequencies above 2 MHz the measure of the tolerable heat quantity, produced in this case by the effect of electromagnetic fields in the human body, is determined by comparison with the basal metabolism of the body. The limit values, which are laid down as a function of frequency, safeguard that the field strength acting on the body remains below the value corresponding to the basal metabolism even at unfavourable conditions of exposure. For the intermediate range the limit values remain below those threshold values that are obtained when applying either the thermal effect concept or the nerve excitation concept alone.}
place = {Germany}
year = {1983}
month = {Jan}
}