Assessment of Ambient Magnetic Field Exposure Emitted from Underground Transmission Lines in Some Areas of Riyadh

Abstract

The purpose of this work is to measure the magnetic field emitted from underground transmission lines and camper with international limit. The measurements of magnetic field were performed with the aid of TRIAXIAL ELF Magnetic Field Meter. The level of magnetic field were found in the range 1 to 197 with mean value of 51.6 ± 44.2 mG.The survey of magnetic field measurements revealed that the level of radiation dose found to be far below than the international standard dose limit for the public exposure set by the International Commission on Non-Ionizing Radiation Protection ICNIRP 830 mG.

A radiation survey in an area suspected to be contaminated with a magnetic field from underground transmission cables

“…The streets of Riyadh our study area was divided into five groups where ; a number of magnetic field measurements were taken along as shown in Figures [1][2][3][4][5]. In street number one, we find that the magnetic-field levels are at a range of 85 to 197 mG, with an average value of 121.4±33.7 mG, as shown in the Table.…”

“…Owing to the vicinity of distribution facilities to housing zones, magnetic field exposures from distribution systems can be higher than those related with transmission lines. Moreover, measurements of magnetic fields at the earth's surface from inhumed distribution cables may be greater than those from overhead lines carrying the same currents because buried cables are closer to the measurement point than overhead lines [3,4] . The environmental effects of electric fields have been studied since the early 1970s, but the effects of magnetic fields have only attracted attention during the last few years because of several epidemiological studies performed around the world.…”