High Voltage Lines: Hazard at a Distance

Abstract

Energy transported by overhead high-voltage (OH-HV) power lines moves not along the wires, but in the direction of the wires, through the space surrounding them. The energy flux is composed of both an electric and a magnetic field. Development in the 1960s was the increasing concern of the USSR for the health of individuals exposed to the fields of OH-HV lines. The Soviet literature contains many studies of the biological consequences of OH-HV type fields. Among them are at least five epidemiological studies involving a total of 727 individuals exposed to the fields of OH-HV type fields. The Soviet reports and on-going research based on them are of importance in judging the safety and health implications of US OH-HV lines. Tests on man and animals have been performed and many results are summarized indicating health hazards. There are, however, health-related aspects of such lines that are potentially more troublesome than the problem of direct exposure to the extremely low frequency fields, although they cannot presently be adequately assessed. The most important of these are synergism, induced current, and global weather modifications. The Public Service Commission of New York has held hearings on the health and safety of OH-HV lines, andmore » this health risk was recognized. It widened the right-of-way for new lines to a minimum of 350 feet and a maximum of 1,200 feet. Proceedings at the hearings are discussed; the authors conclude that the need to protect the American public from involuntary exposure to power frequency fields is now clear. 34 references.« less