Occupational exposure to magnetic fields from transformer stations and electric enclosures in Turkey

Electromagn Biol Med. 2011 Jun;30(2):74-9. doi: 10.3109/15368378.2011.566772.


We aimed to provide a systematic evaluation of magnetic field (MF) exposure of staff working in the offices located above or close to transformer stations (TS) and electric enclosures (EE). Occupational short-term "spot" measurements with Narda EFA-300 and isotropic magnetic field probe were carried out in two National Banks and one Industrial Company having more than 500 employees. Extremely low-frequency (ELF) MFs up to several tens of μT were measured in the mentioned working environments. 25% of the measured MFs were found less than 0.3 μT, the background exposure level that staff receive at home, 75% were above 0.3 μT with the highest value of 6.8 μT. The mean and median personal exposures were calculated to be 1.19 μT and 0.56 μT, respectively. Most of the staff (83%) is under risk based on epidemiological studies that reported a statistically significant association between risk of leukemia and averaged magnetic fields of 0.2 μT or over. Results showed that risk evaluation should be considered to minimize the possibility of the workers being harmed due to exposure to work-related electromagnetic sources.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Electric Power Supplies / adverse effects
  • Electric Power Supplies / statistics & numerical data*
  • Humans
  • Magnetic Fields* / adverse effects
  • Occupational Exposure / adverse effects
  • Occupational Exposure / analysis*
  • Radiation Monitoring / methods*
  • Turkey