Title

Evaluation of extremely low-frequency magnetic field (ELF) at Tehran City in 2012.

Authors

Ali Zazouli, Mohammad; Mohammad Reza Monazzam; Yazdani Charati, Jamshid; Hosseinzadeh, Fatemeh

Abstract

Introduction: The power transmission lines are the emission source of extremely low frequency (ELF) electromagnetic fields that are considered to have an adverse impact on human health. Therefore, the aim of this study was to evaluate the amount of magnetic flux with extremely low frequencies (ELF) around high voltage power transmission lines in the western areas of Tehran in 2012. Materials and Methods: In this study, the magnetic flux density was measured around three lines of high voltage electricity transmission (63, 230 and 400 kV). The employed device for magnetic flux measurement was Triple axis TES 1394 tester. The measurements were taken according to IEEE standard procedures (Std 644-1994) in four distances (0, 5, 10 and 20 m). Results: The results showed that the amount of the minimum, mean and maximum of magnetic flux density were 0.14, 1.43 ±1.25 and 11.51μT, respectively. The flux density was lower than the standard international commission on ionizing radiation protection in all cases. Conclusion: The average level of magnetic flux density was about 1.25% of the exposure limit ICNIRP standard (100 μT) around the three lines. Also the magnetic flux density rate decreased with increasing distance from the line and decreasing flow.

Subjects

TEHRAN (Iran); ELF electromagnetic fields; POWER transmission; ELECTROMAGNETIC fields; ADVERSE health care events; MAGNETIC flux density; MEDICAL sciences

Publication

Journal of Mazandaran University of Medical Sciences (JMUMS), 2013, Vol 23, p145

ISSN

1735-9260

Publication type

Academic Journal