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Over the past decade, the magnetic field issue has become an area of increasing public concern. Utilities have been carrying out extensive projects to characterize and manage the magnetic fields around their substations and other power facilities in an effort to answer public concerns over the possible health hazard associated with these magnetic fields. Research studies in epidemiology, biology, physics and engineering have been conducted extensively, in order to identify the correlation, physical mechanism and technology of magnetic field reduction. The objective of this work is to carry out on-site field measurements and computer simulations to study the magnetic field sources and its management around substations using electrical or/and non-electrical techniques including shielding. Two typical substations are selected; one indoor and another outdoor type. Simulations are done using special software …