Abstract
According to surveyed literature, there may be a health hazard associated with extremely low frequency magnetic fields. This study aims at presenting a recent survey of this literature. It also aims at measuring magnetic field levels close to power transmission lines at inhabited areas in Kuwait to see if current levels are safe and to establish a database of 50 Hz magnetic field levels at inhabited areas. Measurements were made, according to the international standard procedures in winter, spring, summer and fall, and three times of a day. Four inhabited areas were surveyed. Results provide us with an independent view of the levels in the vicinity of power lines and houses. Results show that the highest level is measured in the summer, reaching 115 mG while the minimum level is measured in the fall. We found that some houses were at less than 50 meters distance from the edge of the transmission lines. Some houses were, as close as 22 meters to the line. We found that levels at the entrance of houses and at outdoor parking areas were mostly higher than 4 mG.
Highlights
High frequency electromagnetic radiation and low frequency magnetic fields are associated with health disorders by a growing number of scientists
Our main aim is to monitor the field levels around transmission lines close to inhabited areas in the state of Kuwait and to confirm that houses parallel to the lines are at a safe distance
A professional meter and probe was used for the survey. This provided us with an independent knowledge of field levels and locations that require further attention and investigation. These locations are either closer than 50 meters from the transmission lines or are yielding high levels at houses or facilities used outside the houses
Summary
High frequency electromagnetic radiation and low frequency magnetic fields are associated with health disorders by a growing number of scientists. The investigations are progressing towards further proof of the health hazards associated with high frequency radiation and low frequency fields. (2015) Investigating Levels of Low Frequency Magnetic Field in the Inhabited Vicinity of Power Transmission Lines of Kuwait. The electric field strength E at apoint in space can be represented as a rotating vector which traces an ellipse in a plane perpendicular to the conductors. The field ellipse degenerates to a nearly vertical line. The magnetic field at a point near a three-phase transmission line can be represented by a rotating vector in space but in contrast to the electric field, the vector B is a rotating vector even at ground level. The principle of operation of a coil-type B -field probe takes advantage of Faraday’s law (in differential form)
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