A health examination of railway high-voltage substation workers exposed to ELF electromagnetic fields.

This is a cross-sectional survey on the health conditions of railways workers active in 258 interconnection and conversion substations all over Italy. Measurements performed in both kinds of substations operating at 220 kV have shown that maximum levels of the electric field strength and of the magnetic flux density at 50 Hz are of the order of 5 kV/m and 15 microT, respectively. Three subject groups, differently exposed (1, 10, 20 h/week), and an unexposed control group, for a total number of 627 workers, constitute the population at study. All subjects underwent a general medical examination, laboratory investigations, and a series of selected examinations relative to three systems (nervous, cardiovascular, and haematopoietic) considered at higher risk. No differences have been found between the exposed and the control groups. It is concluded that workers exposed to ELF electromagnetic fields of moderate strength do not show the presence of clear effects on their state of health.

[1]  S. Milham,et al.  Mortality from leukemia in workers exposed to electrical and magnetic fields. , 1982, The New England journal of medicine.

[2]  N. Wertheimer,et al.  Electrical wiring configurations and childhood cancer. , 1979, American journal of epidemiology.

[3]  Protection,et al.  Biological effects and dosimetry of nonionizing radiation : radiofrequency and microwave energies , 1983 .

[4]  S. Freni,et al.  Letter: Angiosarcoma of the liver. , 1976, Lancet.

[5]  S. Nordström,et al.  Reproductive hazards among workers at high voltage substations. , 1983, Bioelectromagnetics.

[6]  M. Grandolfo,et al.  Biological Effects and Dosimetry of Nonionizing Radiation , 1983, NATO Advanced Study Institutes Series.

[7]  N. Wertheimer,et al.  Adult cancer related to electrical wires near the home. , 1982, International journal of epidemiology.

[8]  A. Checcucci,et al.  An Epidemiological Investigation of HV Substation Workers: Study Design and Preliminary Results , 1985 .

[9]  J P Fulton,et al.  Electrical wiring configurations and childhood leukemia in Rhode Island. , 1980, American journal of epidemiology.

[10]  A Wennberg,et al.  Long-term exposure to electric fields. A cross-sectional epidemiologic investigation of occupationally exposed workers in high-voltage substations. , 1979, Scandinavian journal of work, environment & health.

[11]  R Hauf,et al.  Analysis of structural chromosome changes and SCE after occupational long-term exposure to electric and magnetic fields from 380 kV-systems , 1981, Radiation and environmental biophysics.